/* $OpenBSD: rkclock.c,v 1.41 2019/01/01 17:12:58 kettenis Exp $ */ /* * Copyright (c) 2017, 2018 Mark Kettenis * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #include #include #include #include #include /* RK3288 registers */ #define RK3288_CRU_APLL_CON(i) (0x0000 + (i) * 4) #define RK3288_CRU_CPLL_CON(i) (0x0020 + (i) * 4) #define RK3288_CRU_GPLL_CON(i) (0x0030 + (i) * 4) #define RK3288_CRU_PLL_CLKR_MASK (0x3f << 8) #define RK3288_CRU_PLL_CLKR_SHIFT 8 #define RK3288_CRU_PLL_CLKOD_MASK (0xf << 0) #define RK3288_CRU_PLL_CLKOD_SHIFT 0 #define RK3288_CRU_PLL_CLKF_MASK (0x1fff << 0) #define RK3288_CRU_PLL_CLKF_SHIFT 0 #define RK3288_CRU_PLL_RESET (1 << 5) #define RK3288_CRU_MODE_CON 0x0050 #define RK3288_CRU_MODE_PLL_WORK_MODE_MASK 0x3 #define RK3288_CRU_MODE_PLL_WORK_MODE_SLOW 0x0 #define RK3288_CRU_MODE_PLL_WORK_MODE_NORMAL 0x1 #define RK3288_CRU_CLKSEL_CON(i) (0x0060 + (i) * 4) #define RK3288_CRU_SOFTRST_CON(i) (0x01b8 + (i) * 4) /* RK3328 registers */ #define RK3328_CRU_APLL_CON(i) (0x0000 + (i) * 4) #define RK3328_CRU_DPLL_CON(i) (0x0020 + (i) * 4) #define RK3328_CRU_CPLL_CON(i) (0x0040 + (i) * 4) #define RK3328_CRU_GPLL_CON(i) (0x0060 + (i) * 4) #define RK3328_CRU_NPLL_CON(i) (0x00a0 + (i) * 4) #define RK3328_CRU_PLL_POSTDIV1_MASK (0x7 << 12) #define RK3328_CRU_PLL_POSTDIV1_SHIFT 12 #define RK3328_CRU_PLL_FBDIV_MASK (0xfff << 0) #define RK3328_CRU_PLL_FBDIV_SHIFT 0 #define RK3328_CRU_PLL_DSMPD (1 << 12) #define RK3328_CRU_PLL_PLL_LOCK (1 << 10) #define RK3328_CRU_PLL_POSTDIV2_MASK (0x7 << 6) #define RK3328_CRU_PLL_POSTDIV2_SHIFT 6 #define RK3328_CRU_PLL_REFDIV_MASK (0x3f << 0) #define RK3328_CRU_PLL_REFDIV_SHIFT 0 #define RK3328_CRU_PLL_FRACDIV_MASK (0xffffff << 0) #define RK3328_CRU_PLL_FRACDIV_SHIFT 0 #define RK3328_CRU_CRU_MODE 0x0080 #define RK3328_CRU_CRU_MODE_MASK 0x1 #define RK3328_CRU_CRU_MODE_SLOW 0x0 #define RK3328_CRU_CRU_MODE_NORMAL 0x1 #define RK3328_CRU_CLKSEL_CON(i) (0x0100 + (i) * 4) #define RK3328_CRU_CORE_CLK_PLL_SEL_MASK (0x3 << 6) #define RK3328_CRU_CORE_CLK_PLL_SEL_SHIFT 6 #define RK3328_CRU_CLK_CORE_DIV_CON_MASK (0x1f << 0) #define RK3328_CRU_CLK_CORE_DIV_CON_SHIFT 0 #define RK3328_CRU_ACLK_CORE_DIV_CON_MASK (0x7 << 4) #define RK3328_CRU_ACLK_CORE_DIV_CON_SHIFT 4 #define RK3328_CRU_CLK_CORE_DBG_DIV_CON_MASK (0xf << 0) #define RK3328_CRU_CLK_CORE_DBG_DIV_CON_SHIFT 0 #define RK3328_CRU_VOP_DCLK_SRC_SEL_MASK (0x1 << 1) #define RK3328_CRU_VOP_DCLK_SRC_SEL_SHIFT 1 #define RK3328_CRU_CLKGATE_CON(i) (0x0200 + (i) * 4) #define RK3328_CRU_SOFTRST_CON(i) (0x0300 + (i) * 4) /* RK3399 registers */ #define RK3399_CRU_LPLL_CON(i) (0x0000 + (i) * 4) #define RK3399_CRU_BPLL_CON(i) (0x0020 + (i) * 4) #define RK3399_CRU_DPLL_CON(i) (0x0020 + (i) * 4) #define RK3399_CRU_CPLL_CON(i) (0x0060 + (i) * 4) #define RK3399_CRU_GPLL_CON(i) (0x0080 + (i) * 4) #define RK3399_CRU_NPLL_CON(i) (0x00a0 + (i) * 4) #define RK3399_CRU_VPLL_CON(i) (0x00c0 + (i) * 4) #define RK3399_CRU_PLL_FBDIV_MASK (0xfff << 0) #define RK3399_CRU_PLL_FBDIV_SHIFT 0 #define RK3399_CRU_PLL_POSTDIV2_MASK (0x7 << 12) #define RK3399_CRU_PLL_POSTDIV2_SHIFT 12 #define RK3399_CRU_PLL_POSTDIV1_MASK (0x7 << 8) #define RK3399_CRU_PLL_POSTDIV1_SHIFT 8 #define RK3399_CRU_PLL_REFDIV_MASK (0x3f << 0) #define RK3399_CRU_PLL_REFDIV_SHIFT 0 #define RK3399_CRU_PLL_PLL_WORK_MODE_MASK (0x3 << 8) #define RK3399_CRU_PLL_PLL_WORK_MODE_SLOW (0x0 << 8) #define RK3399_CRU_PLL_PLL_WORK_MODE_NORMAL (0x1 << 8) #define RK3399_CRU_PLL_PLL_WORK_MODE_DEEP_SLOW (0x2 << 8) #define RK3399_CRU_PLL_PLL_LOCK (1U << 31) #define RK3399_CRU_CLKSEL_CON(i) (0x0100 + (i) * 4) #define RK3399_CRU_ACLKM_CORE_DIV_CON_MASK (0x1f << 8) #define RK3399_CRU_ACLKM_CORE_DIV_CON_SHIFT 8 #define RK3399_CRU_CORE_PLL_SEL_MASK (0x3 << 6) #define RK3399_CRU_CORE_PLL_SEL_APLL (0x0 << 6) #define RK3399_CRU_CORE_PLL_SEL_BPLL (0x1 << 6) #define RK3399_CRU_CORE_PLL_SEL_DPLL (0x2 << 6) #define RK3399_CRU_CORE_PLL_SEL_GPLL (0x3 << 6) #define RK3399_CRU_CORE_PLL_SEL_SHIFT 6 #define RK3399_CRU_CLK_CORE_DIV_CON_MASK (0x1f << 0) #define RK3399_CRU_CLK_CORE_DIV_CON_SHIFT 0 #define RK3399_CRU_PCLK_DBG_DIV_CON_MASK (0x1f << 8) #define RK3399_CRU_PCLK_DBG_DIV_CON_SHIFT 8 #define RK3399_CRU_ATCLK_CORE_DIV_CON_MASK (0x1f << 0) #define RK3399_CRU_ATCLK_CORE_DIV_CON_SHIFT 0 #define RK3399_CRU_CLK_SD_PLL_SEL_MASK (0x7 << 8) #define RK3399_CRU_CLK_SD_PLL_SEL_SHIFT 8 #define RK3399_CRU_CLK_SD_DIV_CON_MASK (0x7f << 0) #define RK3399_CRU_CLK_SD_DIV_CON_SHIFT 0 #define RK3399_CRU_CLKGATE_CON(i) (0x0300 + (i) * 4) #define RK3399_CRU_SOFTRST_CON(i) (0x0400 + (i) * 4) #define RK3399_CRU_SDMMC_CON(i) (0x0580 + (i) * 4) #define RK3399_PMUCRU_PPLL_CON(i) (0x0000 + (i) * 4) #define RK3399_PMUCRU_CLKSEL_CON(i) (0x0080 + (i) * 4) #include "rkclock_clocks.h" struct rkclock { uint16_t idx; uint16_t reg; uint16_t sel_mask; uint16_t div_mask; uint16_t parents[8]; uint32_t flags; }; #define SEL(l, f) (((1 << (l - f + 1)) - 1) << f) #define DIV(l, f) SEL(l, f) #define FIXED_PARENT (1 << 0) #define SET_PARENT (1 << 1) #define HREAD4(sc, reg) \ (bus_space_read_4((sc)->sc_iot, (sc)->sc_ioh, (reg))) #define HWRITE4(sc, reg, val) \ bus_space_write_4((sc)->sc_iot, (sc)->sc_ioh, (reg), (val)) #define HSET4(sc, reg, bits) \ HWRITE4((sc), (reg), HREAD4((sc), (reg)) | (bits)) #define HCLR4(sc, reg, bits) \ HWRITE4((sc), (reg), HREAD4((sc), (reg)) & ~(bits)) struct rkclock_softc { struct device sc_dev; bus_space_tag_t sc_iot; bus_space_handle_t sc_ioh; uint32_t sc_phandle; struct rkclock *sc_clocks; struct clock_device sc_cd; struct reset_device sc_rd; }; int rkclock_match(struct device *, void *, void *); void rkclock_attach(struct device *, struct device *, void *); struct cfattach rkclock_ca = { sizeof (struct rkclock_softc), rkclock_match, rkclock_attach }; struct cfdriver rkclock_cd = { NULL, "rkclock", DV_DULL }; void rk3288_init(struct rkclock_softc *); uint32_t rk3288_get_frequency(void *, uint32_t *); int rk3288_set_frequency(void *, uint32_t *, uint32_t); void rk3288_enable(void *, uint32_t *, int); void rk3288_reset(void *, uint32_t *, int); void rk3328_init(struct rkclock_softc *); uint32_t rk3328_get_frequency(void *, uint32_t *); int rk3328_set_frequency(void *, uint32_t *, uint32_t); int rk3328_set_parent(void *, uint32_t *, uint32_t *); void rk3328_enable(void *, uint32_t *, int); void rk3328_reset(void *, uint32_t *, int); void rk3399_init(struct rkclock_softc *); uint32_t rk3399_get_frequency(void *, uint32_t *); int rk3399_set_frequency(void *, uint32_t *, uint32_t); void rk3399_enable(void *, uint32_t *, int); void rk3399_reset(void *, uint32_t *, int); void rk3399_pmu_init(struct rkclock_softc *); uint32_t rk3399_pmu_get_frequency(void *, uint32_t *); int rk3399_pmu_set_frequency(void *, uint32_t *, uint32_t); void rk3399_pmu_enable(void *, uint32_t *, int); void rk3399_pmu_reset(void *, uint32_t *, int); struct rkclock_compat { const char *compat; int assign; void (*init)(struct rkclock_softc *); void (*enable)(void *, uint32_t *, int); uint32_t (*get_frequency)(void *, uint32_t *); int (*set_frequency)(void *, uint32_t *, uint32_t); int (*set_parent)(void *, uint32_t *, uint32_t *); void (*reset)(void *, uint32_t *, int); }; struct rkclock_compat rkclock_compat[] = { { "rockchip,rk3288-cru", 0, rk3288_init, rk3288_enable, rk3288_get_frequency, rk3288_set_frequency, NULL, rk3288_reset }, { "rockchip,rk3328-cru", 1, rk3328_init, rk3328_enable, rk3328_get_frequency, rk3328_set_frequency, rk3328_set_parent, rk3328_reset }, { "rockchip,rk3399-cru", 1, rk3399_init, rk3399_enable, rk3399_get_frequency, rk3399_set_frequency, NULL, rk3399_reset }, { "rockchip,rk3399-pmucru", 1, rk3399_pmu_init, rk3399_pmu_enable, rk3399_pmu_get_frequency, rk3399_pmu_set_frequency, NULL, rk3399_pmu_reset } }; int rkclock_match(struct device *parent, void *match, void *aux) { struct fdt_attach_args *faa = aux; int i; for (i = 0; i < nitems(rkclock_compat); i++) { if (OF_is_compatible(faa->fa_node, rkclock_compat[i].compat)) return 10; } return 0; } void rkclock_attach(struct device *parent, struct device *self, void *aux) { struct rkclock_softc *sc = (struct rkclock_softc *)self; struct fdt_attach_args *faa = aux; int i; if (faa->fa_nreg < 1) { printf(": no registers\n"); return; } sc->sc_iot = faa->fa_iot; if (bus_space_map(sc->sc_iot, faa->fa_reg[0].addr, faa->fa_reg[0].size, 0, &sc->sc_ioh)) { printf(": can't map registers\n"); return; } printf("\n"); sc->sc_phandle = OF_getpropint(faa->fa_node, "phandle", 0); for (i = 0; i < nitems(rkclock_compat); i++) { if (OF_is_compatible(faa->fa_node, rkclock_compat[i].compat)) { break; } } KASSERT(i < nitems(rkclock_compat)); if (rkclock_compat[i].init) rkclock_compat[i].init(sc); sc->sc_cd.cd_node = faa->fa_node; sc->sc_cd.cd_cookie = sc; sc->sc_cd.cd_enable = rkclock_compat[i].enable; sc->sc_cd.cd_get_frequency = rkclock_compat[i].get_frequency; sc->sc_cd.cd_set_frequency = rkclock_compat[i].set_frequency; sc->sc_cd.cd_set_parent = rkclock_compat[i].set_parent; clock_register(&sc->sc_cd); sc->sc_rd.rd_node = faa->fa_node; sc->sc_rd.rd_cookie = sc; sc->sc_rd.rd_reset = rkclock_compat[i].reset; reset_register(&sc->sc_rd); if (rkclock_compat[i].assign) clock_set_assigned(faa->fa_node); } struct rkclock * rkclock_lookup(struct rkclock_softc *sc, uint32_t idx) { struct rkclock *clk; for (clk = sc->sc_clocks; clk->idx; clk++) { if (clk->idx == idx) return clk; } return NULL; } uint32_t rkclock_div_con(struct rkclock_softc *sc, struct rkclock *clk, uint32_t mux, uint32_t freq) { uint32_t parent_freq, div, div_con, max_div_con; uint32_t idx = clk->parents[mux]; /* Derive maximum value from mask. */ max_div_con = clk->div_mask >> (ffs(clk->div_mask) - 1); parent_freq = sc->sc_cd.cd_get_frequency(sc, &idx); div = (parent_freq + freq - 1) / freq; div_con = (div > 0 ? div - 1 : 0); return (div_con < max_div_con) ? div_con : max_div_con; } uint32_t rkclock_freq(struct rkclock_softc *sc, struct rkclock *clk, uint32_t mux, uint32_t freq) { uint32_t parent_freq, div_con; uint32_t idx = clk->parents[mux]; parent_freq = sc->sc_cd.cd_get_frequency(sc, &idx); div_con = rkclock_div_con(sc, clk, mux, freq); return parent_freq / (div_con + 1); } uint32_t rkclock_get_frequency(struct rkclock_softc *sc, uint32_t idx) { struct rkclock *clk; uint32_t reg, mux, div_con; int shift; clk = rkclock_lookup(sc, idx); if (clk == NULL) { printf("%s: 0x%08x\n", __func__, idx); return 0; } reg = HREAD4(sc, clk->reg); shift = ffs(clk->sel_mask) - 1; if (shift == -1) mux = 0; else mux = (reg & clk->sel_mask) >> shift; shift = ffs(clk->div_mask) - 1; if (shift == -1) div_con = 0; else div_con = (reg & clk->div_mask) >> shift; if (clk->parents[mux] == 0) { printf("%s: parent 0x%08x\n", __func__, idx); return 0; } idx = clk->parents[mux]; return sc->sc_cd.cd_get_frequency(sc, &idx) / (div_con + 1); } int rkclock_set_frequency(struct rkclock_softc *sc, uint32_t idx, uint32_t freq) { struct rkclock *clk; uint32_t reg, mux, div_con; uint32_t best_freq, best_mux, f; int sel_shift, div_shift, i; clk = rkclock_lookup(sc, idx); if (clk == NULL || clk->div_mask == 0) { printf("%s: 0x%08x\n", __func__, idx); return -1; } reg = HREAD4(sc, clk->reg); sel_shift = ffs(clk->sel_mask) - 1; if (sel_shift == -1) mux = sel_shift = 0; else mux = (reg & clk->sel_mask) >> sel_shift; if (clk->parents[mux] == 0) { printf("%s: parent 0x%08x\n", __func__, idx); return 0; } if (clk->flags & SET_PARENT) { idx = clk->parents[mux]; sc->sc_cd.cd_set_frequency(sc, &idx, freq); } /* * Start out with the current parent. This prevents * unecessary switching to a different parent. */ best_freq = rkclock_freq(sc, clk, mux, freq); best_mux = mux; /* * Find the parent that allows configuration of a frequency * closest to the target frequency. */ if ((clk->flags & FIXED_PARENT) == 0) { for (i = 0; i < nitems(clk->parents); i++) { if (clk->parents[i] == 0) continue; f = rkclock_freq(sc, clk, i, freq); if ((f > best_freq && f <= freq) || (f < best_freq && f >= freq)) { best_freq = f; best_mux = i; } } } div_con = rkclock_div_con(sc, clk, best_mux, freq); div_shift = ffs(clk->div_mask) - 1; HWRITE4(sc, clk->reg, clk->sel_mask << 16 | best_mux << sel_shift | clk->div_mask << 16 | div_con << div_shift); return 0; } int rkclock_set_parent(struct rkclock_softc *sc, uint32_t idx, uint32_t parent) { struct rkclock *clk; uint32_t mux; int shift; clk = rkclock_lookup(sc, idx); if (clk == NULL || clk->sel_mask == 0) { printf("%s: 0x%08x\n", __func__, idx); return -1; } for (mux = 0; mux < nitems(clk->parents); mux++) { if (clk->parents[mux] == parent) break; } if (mux == nitems(clk->parents) || parent == 0) { printf("%s: 0x%08x parent 0x%08x\n", __func__, idx, parent); return -1; } shift = ffs(clk->sel_mask) - 1; HWRITE4(sc, clk->reg, clk->sel_mask << 16 | mux << shift); return 0; } /* * Rockchip RK3288 */ void rk3288_init(struct rkclock_softc *sc) { int node; /* * Since the hardware comes up with a really conservative CPU * clock frequency, and U-Boot doesn't set it to a more * reasonable default, try to do so here. These defaults were * chosen assuming that the CPU voltage is at least 1.1 V. * Only do this on the Tinker-RK3288 for now where this is * likely to be true given the default voltages for the * regulators on that board. */ node = OF_finddevice("/"); if (OF_is_compatible(node, "rockchip,rk3288-tinker")) { uint32_t idx; /* Run at 1.2 GHz. */ idx = RK3288_ARMCLK; rk3288_set_frequency(sc, &idx, 1200000000); } } uint32_t rk3288_get_pll(struct rkclock_softc *sc, bus_size_t base) { uint32_t clkod, clkr, clkf; uint32_t reg; reg = HREAD4(sc, base); clkod = (reg & RK3288_CRU_PLL_CLKOD_MASK) >> RK3288_CRU_PLL_CLKOD_SHIFT; clkr = (reg & RK3288_CRU_PLL_CLKR_MASK) >> RK3288_CRU_PLL_CLKR_SHIFT; reg = HREAD4(sc, base + 4); clkf = (reg & RK3288_CRU_PLL_CLKF_MASK) >> RK3288_CRU_PLL_CLKF_SHIFT; return 24000000ULL * (clkf + 1) / (clkr + 1) / (clkod + 1); } int rk3288_set_pll(struct rkclock_softc *sc, bus_size_t base, uint32_t freq) { int shift = 4 * (base / RK3288_CRU_CPLL_CON(0)); uint32_t no, nr, nf; /* * It is not clear whether all combinations of the clock * dividers result in a stable clock. Therefore this function * only supports a limited set of PLL clock rates. For now * this set covers all the CPU frequencies supported by the * Linux kernel. */ switch (freq) { case 1800000000: case 1704000000: case 1608000000: case 1512000000: case 1488000000: case 1416000000: case 1200000000: nr = no = 1; break; case 1008000000: case 816000000: case 696000000: case 600000000: nr = 1; no = 2; break; case 408000000: case 312000000: nr = 1; no = 4; break; case 216000000: case 126000000: nr = 1; no = 8; break; default: printf("%s: %u Hz\n", __func__, freq); return -1; } /* Calculate feedback divider. */ nf = freq * nr * no / 24000000; /* * Select slow mode to guarantee a stable clock while we're * adjusting the PLL. */ HWRITE4(sc, RK3288_CRU_MODE_CON, (RK3288_CRU_MODE_PLL_WORK_MODE_MASK << 16 | RK3288_CRU_MODE_PLL_WORK_MODE_SLOW) << shift); /* Assert reset. */ HWRITE4(sc, base + 0x000c, RK3288_CRU_PLL_RESET << 16 | RK3288_CRU_PLL_RESET); /* Set PLL rate. */ HWRITE4(sc, base + 0x0000, RK3288_CRU_PLL_CLKR_MASK << 16 | (nr - 1) << RK3288_CRU_PLL_CLKR_SHIFT | RK3288_CRU_PLL_CLKOD_MASK << 16 | (no - 1) << RK3288_CRU_PLL_CLKOD_SHIFT); HWRITE4(sc, base + 0x0004, RK3288_CRU_PLL_CLKF_MASK << 16 | (nf - 1) << RK3288_CRU_PLL_CLKF_SHIFT); /* Deassert reset and wait. */ HWRITE4(sc, base + 0x000c, RK3288_CRU_PLL_RESET << 16); delay((nr * 500 / 24) + 1); /* Switch back to normal mode. */ HWRITE4(sc, RK3288_CRU_MODE_CON, (RK3288_CRU_MODE_PLL_WORK_MODE_MASK << 16 | RK3288_CRU_MODE_PLL_WORK_MODE_NORMAL) << shift); return 0; } uint32_t rk3288_get_frequency(void *cookie, uint32_t *cells) { struct rkclock_softc *sc = cookie; uint32_t idx = cells[0]; uint32_t reg, mux, div_con, aclk_div_con; switch (idx) { case RK3288_PLL_APLL: return rk3288_get_pll(sc, RK3288_CRU_APLL_CON(0)); case RK3288_PLL_CPLL: return rk3288_get_pll(sc, RK3288_CRU_CPLL_CON(0)); case RK3288_PLL_GPLL: return rk3288_get_pll(sc, RK3288_CRU_GPLL_CON(0)); case RK3288_ARMCLK: reg = HREAD4(sc, RK3288_CRU_CLKSEL_CON(0)); mux = (reg >> 15) & 0x1; div_con = (reg >> 8) & 0x1f; idx = (mux == 0) ? RK3288_PLL_APLL : RK3288_PLL_GPLL; return rk3288_get_frequency(sc, &idx) / (div_con + 1); case RK3288_CLK_SDMMC: reg = HREAD4(sc, RK3288_CRU_CLKSEL_CON(11)); mux = (reg >> 6) & 0x3; div_con = reg & 0x3f; switch (mux) { case 0: idx = RK3288_PLL_CPLL; break; case 1: idx = RK3288_PLL_GPLL; break; case 2: return 24000000 / (div_con + 1); default: return 0; } return rk3288_get_frequency(sc, &idx) / (div_con + 1); break; case RK3288_CLK_UART0: reg = HREAD4(sc, RK3288_CRU_CLKSEL_CON(13)); mux = (reg >> 8) & 0x3; div_con = reg & 0x7f; if (mux == 2) return 24000000 / (div_con + 1); break; case RK3288_CLK_UART1: reg = HREAD4(sc, RK3288_CRU_CLKSEL_CON(14)); mux = (reg >> 8) & 0x3; div_con = reg & 0x7f; if (mux == 2) return 24000000 / (div_con + 1); break; case RK3288_CLK_UART2: reg = HREAD4(sc, RK3288_CRU_CLKSEL_CON(15)); mux = (reg >> 8) & 0x3; div_con = reg & 0x7f; if (mux == 2) return 24000000 / (div_con + 1); break; case RK3288_CLK_UART3: reg = HREAD4(sc, RK3288_CRU_CLKSEL_CON(16)); mux = (reg >> 8) & 0x3; div_con = reg & 0x7f; if (mux == 2) return 24000000 / (div_con + 1); break; case RK3288_CLK_UART4: reg = HREAD4(sc, RK3288_CRU_CLKSEL_CON(3)); mux = (reg >> 8) & 0x3; div_con = reg & 0x7f; if (mux == 2) return 24000000 / (div_con + 1); break; case RK3288_PCLK_I2C0: case RK3288_PCLK_I2C2: reg = HREAD4(sc, RK3288_CRU_CLKSEL_CON(1)); mux = (reg >> 15) & 0x1; /* pd_bus_pclk_div_con */ div_con = (reg >> 12) & 0x7; if (mux == 1) idx = RK3288_PLL_GPLL; else idx = RK3288_PLL_CPLL; return rk3288_get_frequency(sc, &idx) / (div_con + 1); case RK3288_PCLK_I2C1: case RK3288_PCLK_I2C3: case RK3288_PCLK_I2C4: case RK3288_PCLK_I2C5: reg = HREAD4(sc, RK3288_CRU_CLKSEL_CON(10)); mux = (reg >> 15) & 0x1; /* peri_pclk_div_con */ div_con = (reg >> 12) & 0x3; /* peri_aclk_div_con */ aclk_div_con = reg & 0xf; if (mux == 1) idx = RK3288_PLL_GPLL; else idx = RK3288_PLL_CPLL; return (rk3288_get_frequency(sc, &idx) / (aclk_div_con + 1)) >> div_con; default: break; } printf("%s: 0x%08x\n", __func__, idx); return 0; } int rk3288_set_frequency(void *cookie, uint32_t *cells, uint32_t freq) { struct rkclock_softc *sc = cookie; uint32_t idx = cells[0]; int error; switch (idx) { case RK3288_PLL_APLL: return rk3288_set_pll(sc, RK3288_CRU_APLL_CON(0), freq); case RK3288_ARMCLK: idx = RK3288_PLL_APLL; error = rk3288_set_frequency(sc, &idx, freq); if (error == 0) { HWRITE4(sc, RK3288_CRU_CLKSEL_CON(0), ((1 << 15) | (0x1f << 8)) << 16); } return error; } printf("%s: 0x%08x\n", __func__, idx); return -1; } void rk3288_enable(void *cookie, uint32_t *cells, int on) { uint32_t idx = cells[0]; switch (idx) { case RK3288_CLK_SDMMC: case RK3288_CLK_TSADC: case RK3288_CLK_UART0: case RK3288_CLK_UART1: case RK3288_CLK_UART2: case RK3288_CLK_UART3: case RK3288_CLK_UART4: case RK3288_CLK_MAC_RX: case RK3288_CLK_MAC_TX: case RK3288_CLK_SDMMC_DRV: case RK3288_CLK_SDMMC_SAMPLE: case RK3288_CLK_MAC: case RK3288_ACLK_GMAC: case RK3288_PCLK_GMAC: case RK3288_PCLK_I2C0: case RK3288_PCLK_I2C1: case RK3288_PCLK_I2C2: case RK3288_PCLK_I2C3: case RK3288_PCLK_I2C4: case RK3288_PCLK_I2C5: case RK3288_PCLK_TSADC: case RK3288_HCLK_HOST0: case RK3288_HCLK_SDMMC: /* Enabled by default. */ break; default: printf("%s: 0x%08x\n", __func__, idx); break; } } void rk3288_reset(void *cookie, uint32_t *cells, int on) { struct rkclock_softc *sc = cookie; uint32_t idx = cells[0]; uint32_t mask = (1 << (idx % 16)); HWRITE4(sc, RK3288_CRU_SOFTRST_CON(idx / 16), mask << 16 | (on ? mask : 0)); } /* * Rockchip RK3328 */ struct rkclock rk3328_clocks[] = { { RK3328_CLK_RTC32K, RK3328_CRU_CLKSEL_CON(38), SEL(15, 14), DIV(13, 0), { RK3328_PLL_CPLL, RK3328_PLL_GPLL, RK3328_XIN24M } }, { RK3328_CLK_SDMMC, RK3328_CRU_CLKSEL_CON(30), SEL(9, 8), DIV(7, 0), { RK3328_PLL_CPLL, RK3328_PLL_GPLL, RK3328_XIN24M, RK3328_USB480M } }, { RK3328_CLK_SDIO, RK3328_CRU_CLKSEL_CON(31), SEL(9, 8), DIV(7, 0), { RK3328_PLL_CPLL, RK3328_PLL_GPLL, RK3328_XIN24M, RK3328_USB480M } }, { RK3328_CLK_EMMC, RK3328_CRU_CLKSEL_CON(32), SEL(9, 8), DIV(7, 0), { RK3328_PLL_CPLL, RK3328_PLL_GPLL, RK3328_XIN24M, RK3328_USB480M } }, { RK3328_CLK_TSADC, RK3328_CRU_CLKSEL_CON(22), 0, DIV(9, 0), { RK3328_CLK_24M } }, { RK3328_CLK_UART0, RK3328_CRU_CLKSEL_CON(14), SEL(9, 8), 0, { 0, 0, RK3328_XIN24M, RK3328_XIN24M } }, { RK3328_CLK_UART1, RK3328_CRU_CLKSEL_CON(16), SEL(9, 8), 0, { 0, 0, RK3328_XIN24M, RK3328_XIN24M } }, { RK3328_CLK_UART2, RK3328_CRU_CLKSEL_CON(18), SEL(9, 8), 0, { 0, 0, RK3328_XIN24M, RK3328_XIN24M } }, { RK3328_CLK_WIFI, RK3328_CRU_CLKSEL_CON(52), SEL(7, 6), DIV(5, 0), { RK3328_PLL_CPLL, RK3328_PLL_GPLL, RK3328_USB480M } }, { RK3328_CLK_I2C0, RK3328_CRU_CLKSEL_CON(34), SEL(7, 7), DIV(6, 0), { RK3328_PLL_CPLL, RK3328_PLL_GPLL } }, { RK3328_CLK_I2C1, RK3328_CRU_CLKSEL_CON(34), SEL(15, 15), DIV(14, 8), { RK3328_PLL_CPLL, RK3328_PLL_GPLL } }, { RK3328_CLK_I2C2, RK3328_CRU_CLKSEL_CON(35), SEL(7, 7), DIV(6, 0), { RK3328_PLL_CPLL, RK3328_PLL_GPLL } }, { RK3328_CLK_I2C3, RK3328_CRU_CLKSEL_CON(35), SEL(15, 15), DIV(14, 8), { RK3328_PLL_CPLL, RK3328_PLL_GPLL } }, { RK3328_CLK_PDM, RK3328_CRU_CLKSEL_CON(20), SEL(15, 14), DIV(12, 8), { RK3328_PLL_CPLL, RK3328_PLL_GPLL, RK3328_PLL_APLL }, FIXED_PARENT | SET_PARENT }, { RK3328_CLK_VDEC_CABAC, RK3328_CRU_CLKSEL_CON(48), SEL(15, 14), DIV(12, 8), { RK3328_PLL_CPLL, RK3328_PLL_GPLL, RK3328_HDMIPHY, RK3328_USB480M } }, { RK3328_CLK_VDEC_CORE, RK3328_CRU_CLKSEL_CON(49), SEL(7, 6), DIV(4, 0), { RK3328_PLL_CPLL, RK3328_PLL_GPLL, RK3328_HDMIPHY, RK3328_USB480M } }, { RK3328_CLK_VENC_DSP, RK3328_CRU_CLKSEL_CON(52), SEL(15, 14), DIV(12, 8), { RK3328_PLL_CPLL, RK3328_PLL_GPLL, RK3328_HDMIPHY, RK3328_USB480M } }, { RK3328_CLK_VENC_CORE, RK3328_CRU_CLKSEL_CON(51), SEL(15, 14), DIV(12, 8), { RK3328_PLL_CPLL, RK3328_PLL_GPLL, RK3328_HDMIPHY, RK3328_USB480M } }, { RK3328_CLK_TSP, RK3328_CRU_CLKSEL_CON(21), SEL(15, 15), DIV(12, 8), { RK3328_PLL_CPLL, RK3328_PLL_GPLL } }, { RK3328_DCLK_LCDC, RK3328_CRU_CLKSEL_CON(40), SEL(1, 1), 0, { RK3328_HDMIPHY, RK3328_DCLK_LCDC_SRC } }, { RK3328_ACLK_VOP_PRE, RK3328_CRU_CLKSEL_CON(39), SEL(7, 6), DIV(4, 0), { RK3328_PLL_CPLL, RK3328_PLL_GPLL, RK3328_HDMIPHY, RK3328_USB480M } }, { RK3328_ACLK_RGA_PRE, RK3328_CRU_CLKSEL_CON(36), SEL(15, 14), DIV(12, 8), { RK3328_PLL_CPLL, RK3328_PLL_GPLL, RK3328_HDMIPHY, RK3328_USB480M } }, { RK3328_ACLK_BUS_PRE, RK3328_CRU_CLKSEL_CON(0), SEL(14, 13), DIV(12, 8), { RK3328_PLL_CPLL, RK3328_PLL_GPLL, RK3328_HDMIPHY } }, { RK3328_ACLK_PERI_PRE, RK3328_CRU_CLKSEL_CON(28), SEL(7, 6), DIV(4, 0), { RK3328_PLL_CPLL, RK3328_PLL_GPLL, RK3328_HDMIPHY } }, { RK3328_ACLK_RKVDEC_PRE, RK3328_CRU_CLKSEL_CON(48), SEL(7, 6), DIV(4, 0), { RK3328_PLL_CPLL, RK3328_PLL_GPLL, RK3328_HDMIPHY, RK3328_USB480M } }, { RK3328_ACLK_RKVENC, RK3328_CRU_CLKSEL_CON(51), SEL(7, 6), DIV(4, 0), { RK3328_PLL_CPLL, RK3328_PLL_GPLL, RK3328_HDMIPHY, RK3328_USB480M } }, { RK3328_ACLK_VPU_PRE, RK3328_CRU_CLKSEL_CON(50), SEL(7, 6), DIV(4, 0), { RK3328_PLL_CPLL, RK3328_PLL_GPLL, RK3328_HDMIPHY, RK3328_USB480M } }, { RK3328_ACLK_VIO_PRE, RK3328_CRU_CLKSEL_CON(37), SEL(7, 6), DIV(4, 0), { RK3328_PLL_CPLL, RK3328_PLL_GPLL, RK3328_HDMIPHY, RK3328_USB480M } }, { RK3328_PCLK_BUS_PRE, RK3328_CRU_CLKSEL_CON(1), 0, DIV(14, 12), { RK3328_ACLK_BUS_PRE } }, { RK3328_HCLK_BUS_PRE, RK3328_CRU_CLKSEL_CON(1), 0, DIV(9, 8), { RK3328_ACLK_BUS_PRE } }, { RK3328_PCLK_PERI, RK3328_CRU_CLKSEL_CON(29), 0, DIV(6, 4), { RK3328_ACLK_PERI_PRE } }, { RK3328_HCLK_PERI, RK3328_CRU_CLKSEL_CON(29), 0, DIV(1, 0), { RK3328_ACLK_PERI_PRE } }, { RK3328_CLK_24M, RK3328_CRU_CLKSEL_CON(2), 0, DIV(12, 8), { RK3328_XIN24M } }, { /* Sentinel */ } }; void rk3328_init(struct rkclock_softc *sc) { int i; /* The code below assumes all clocks are enabled. Check this!. */ for (i = 0; i <= 28; i++) { if (HREAD4(sc, RK3328_CRU_CLKGATE_CON(i)) != 0x00000000) { printf("CRU_CLKGATE_CON%d: 0x%08x\n", i, HREAD4(sc, RK3328_CRU_CLKGATE_CON(i))); } } sc->sc_clocks = rk3328_clocks; } uint32_t rk3328_armclk_parent(uint32_t mux) { switch (mux) { case 0: return RK3328_PLL_APLL; case 1: return RK3328_PLL_GPLL; case 2: return RK3328_PLL_DPLL; case 3: return RK3328_PLL_NPLL; } return 0; } uint32_t rk3328_get_armclk(struct rkclock_softc *sc) { uint32_t reg, mux, div_con; uint32_t idx; reg = HREAD4(sc, RK3328_CRU_CLKSEL_CON(0)); mux = (reg & RK3328_CRU_CORE_CLK_PLL_SEL_MASK) >> RK3328_CRU_CORE_CLK_PLL_SEL_SHIFT; div_con = (reg & RK3328_CRU_CLK_CORE_DIV_CON_MASK) >> RK3328_CRU_CLK_CORE_DIV_CON_SHIFT; idx = rk3328_armclk_parent(mux); return rk3328_get_frequency(sc, &idx) / (div_con + 1); } int rk3328_set_armclk(struct rkclock_softc *sc, uint32_t freq) { uint32_t reg, mux; uint32_t old_freq, div; uint32_t idx; old_freq = rk3328_get_armclk(sc); if (freq == old_freq) return 0; reg = HREAD4(sc, RK3328_CRU_CLKSEL_CON(0)); mux = (reg & RK3328_CRU_CORE_CLK_PLL_SEL_MASK) >> RK3328_CRU_CORE_CLK_PLL_SEL_SHIFT; /* Keep the pclk_dbg clock at or below 300 MHz. */ div = 1; while (freq / (div + 1) > 300000000) div++; /* and make sure we use an odd divider. */ if ((div % 2) == 0) div++; /* When ramping up, set clock dividers first. */ if (freq > old_freq) { HWRITE4(sc, RK3328_CRU_CLKSEL_CON(0), RK3328_CRU_CLK_CORE_DIV_CON_MASK << 16 | 0 << RK3328_CRU_CLK_CORE_DIV_CON_SHIFT); HWRITE4(sc, RK3328_CRU_CLKSEL_CON(1), RK3328_CRU_ACLK_CORE_DIV_CON_MASK << 16 | 1 << RK3328_CRU_ACLK_CORE_DIV_CON_SHIFT | RK3328_CRU_CLK_CORE_DBG_DIV_CON_MASK << 16 | div << RK3328_CRU_CLK_CORE_DBG_DIV_CON_SHIFT); } /* We always use NPLL and force the switch below if needed. */ idx = RK3328_PLL_NPLL; rk3328_set_frequency(sc, &idx, freq); /* When ramping down, set clock dividers last. */ if (freq < old_freq || mux != 3) { HWRITE4(sc, RK3328_CRU_CLKSEL_CON(0), RK3328_CRU_CORE_CLK_PLL_SEL_MASK << 16 | 3 << RK3328_CRU_CORE_CLK_PLL_SEL_SHIFT | RK3328_CRU_CLK_CORE_DIV_CON_MASK << 16 | 0 << RK3328_CRU_CLK_CORE_DIV_CON_SHIFT); HWRITE4(sc, RK3328_CRU_CLKSEL_CON(1), RK3328_CRU_ACLK_CORE_DIV_CON_MASK << 16 | 1 << RK3328_CRU_ACLK_CORE_DIV_CON_SHIFT | RK3328_CRU_CLK_CORE_DBG_DIV_CON_MASK << 16 | div << RK3328_CRU_CLK_CORE_DBG_DIV_CON_SHIFT); } return 0; } uint32_t rk3328_get_pll(struct rkclock_softc *sc, bus_size_t base) { uint32_t fbdiv, postdiv1, postdiv2, refdiv; uint32_t dsmpd, fracdiv; uint64_t frac = 0; uint32_t reg; reg = HREAD4(sc, base + 0x0000); postdiv1 = (reg & RK3328_CRU_PLL_POSTDIV1_MASK) >> RK3328_CRU_PLL_POSTDIV1_SHIFT; fbdiv = (reg & RK3328_CRU_PLL_FBDIV_MASK) >> RK3328_CRU_PLL_FBDIV_SHIFT; reg = HREAD4(sc, base + 0x0004); dsmpd = (reg & RK3328_CRU_PLL_DSMPD); postdiv2 = (reg & RK3328_CRU_PLL_POSTDIV2_MASK) >> RK3328_CRU_PLL_POSTDIV2_SHIFT; refdiv = (reg & RK3328_CRU_PLL_REFDIV_MASK) >> RK3328_CRU_PLL_REFDIV_SHIFT; reg = HREAD4(sc, base + 0x0008); fracdiv = (reg & RK3328_CRU_PLL_FRACDIV_MASK) >> RK3328_CRU_PLL_FRACDIV_SHIFT; if (dsmpd == 0) frac = (24000000ULL * fracdiv / refdiv) >> 24; return ((24000000ULL * fbdiv / refdiv) + frac) / postdiv1 / postdiv2; } int rk3328_set_pll(struct rkclock_softc *sc, bus_size_t base, uint32_t freq) { uint32_t fbdiv, postdiv1, postdiv2, refdiv; int mode_shift = -1; switch (base) { case RK3328_CRU_APLL_CON(0): mode_shift = 0; break; case RK3328_CRU_DPLL_CON(0): mode_shift = 4; break; case RK3328_CRU_CPLL_CON(0): mode_shift = 8; break; case RK3328_CRU_GPLL_CON(0): mode_shift = 12; break; case RK3328_CRU_NPLL_CON(0): mode_shift = 1; break; } KASSERT(mode_shift != -1); /* * It is not clear whether all combinations of the clock * dividers result in a stable clock. Therefore this function * only supports a limited set of PLL clock rates. For now * this set covers all the CPU frequencies supported by the * Linux kernel. */ switch (freq) { case 1800000000U: case 1704000000U: case 1608000000U: case 1512000000U: case 1488000000U: case 1416000000U: case 1392000000U: case 1296000000U: case 1200000000U: case 1104000000U: postdiv1 = postdiv2 = refdiv = 1; break; case 1008000000U: case 912000000U: case 816000000U: case 696000000U: postdiv1 = 2; postdiv2 = refdiv = 1; break; case 600000000U: postdiv1 = 3; postdiv2 = refdiv = 1; break; case 408000000U: case 312000000U: postdiv1 = postdiv2 = 2; refdiv = 1; break; case 216000000U: postdiv1 = 4; postdiv2 = 2; refdiv = 1; break; case 96000000U: postdiv1 = postdiv2 = 4; refdiv = 1; break; default: printf("%s: %u Hz\n", __func__, freq); return -1; } /* Calculate feedback divider. */ fbdiv = freq * postdiv1 * postdiv2 * refdiv / 24000000; /* * Select slow mode to guarantee a stable clock while we're * adjusting the PLL. */ HWRITE4(sc, RK3328_CRU_CRU_MODE, (RK3328_CRU_CRU_MODE_MASK << 16 | RK3328_CRU_CRU_MODE_SLOW) << mode_shift); /* Set PLL rate. */ HWRITE4(sc, base + 0x0000, RK3328_CRU_PLL_POSTDIV1_MASK << 16 | postdiv1 << RK3328_CRU_PLL_POSTDIV1_SHIFT | RK3328_CRU_PLL_FBDIV_MASK << 16 | fbdiv << RK3328_CRU_PLL_FBDIV_SHIFT); HWRITE4(sc, base + 0x0004, RK3328_CRU_PLL_DSMPD << 16 | RK3328_CRU_PLL_DSMPD | RK3328_CRU_PLL_POSTDIV2_MASK << 16 | postdiv2 << RK3328_CRU_PLL_POSTDIV2_SHIFT | RK3328_CRU_PLL_REFDIV_MASK << 16 | refdiv << RK3328_CRU_PLL_REFDIV_SHIFT); /* Wait for PLL to stabilize. */ while ((HREAD4(sc, base + 0x0004) & RK3328_CRU_PLL_PLL_LOCK) == 0) delay(10); /* Switch back to normal mode. */ HWRITE4(sc, RK3328_CRU_CRU_MODE, (RK3328_CRU_CRU_MODE_MASK << 16 | RK3328_CRU_CRU_MODE_NORMAL) << mode_shift); return 0; } int rk3328_set_frac_pll(struct rkclock_softc *sc, bus_size_t base, uint32_t freq) { uint32_t fbdiv, postdiv1, postdiv2, refdiv, fracdiv; int mode_shift = -1; uint32_t reg; switch (base) { case RK3328_CRU_APLL_CON(0): mode_shift = 0; break; case RK3328_CRU_DPLL_CON(0): mode_shift = 4; break; case RK3328_CRU_CPLL_CON(0): mode_shift = 8; break; case RK3328_CRU_GPLL_CON(0): mode_shift = 12; break; case RK3328_CRU_NPLL_CON(0): mode_shift = 1; break; } KASSERT(mode_shift != -1); /* * It is not clear whether all combinations of the clock * dividers result in a stable clock. Therefore this function * only supports a limited set of PLL clock rates. This set * set covers all the fractional PLL frequencies supported by * the Linux kernel. */ switch (freq) { case 1016064000U: postdiv1 = postdiv2 = 1; refdiv = 3; fracdiv = 134217; break; case 983040000U: postdiv1 = postdiv2 = 1; refdiv = 24; fracdiv = 671088; break; case 491520000U: postdiv1 = 2; postdiv2 = 1; refdiv = 24; fracdiv = 671088; break; case 61440000U: postdiv1 = 7; postdiv2 = 2; refdiv = 6; fracdiv = 671088; break; case 56448000U: postdiv1 = postdiv2 = 4; refdiv = 12; fracdiv = 9797894; break; case 40960000U: postdiv1 = 4; postdiv2 = 5; refdiv = 12; fracdiv = 10066239; break; default: printf("%s: %u Hz\n", __func__, freq); return -1; } /* Calculate feedback divider. */ fbdiv = (uint64_t)freq * postdiv1 * postdiv2 * refdiv / 24000000; /* * Select slow mode to guarantee a stable clock while we're * adjusting the PLL. */ HWRITE4(sc, RK3328_CRU_CRU_MODE, (RK3328_CRU_CRU_MODE_MASK << 16 | RK3328_CRU_CRU_MODE_SLOW) << mode_shift); /* Set PLL rate. */ HWRITE4(sc, base + 0x0000, RK3328_CRU_PLL_POSTDIV1_MASK << 16 | postdiv1 << RK3328_CRU_PLL_POSTDIV1_SHIFT | RK3328_CRU_PLL_FBDIV_MASK << 16 | fbdiv << RK3328_CRU_PLL_FBDIV_SHIFT); HWRITE4(sc, base + 0x0004, RK3328_CRU_PLL_DSMPD << 16 | RK3328_CRU_PLL_POSTDIV2_MASK << 16 | postdiv2 << RK3328_CRU_PLL_POSTDIV2_SHIFT | RK3328_CRU_PLL_REFDIV_MASK << 16 | refdiv << RK3328_CRU_PLL_REFDIV_SHIFT); reg = HREAD4(sc, base + 0x0008); reg &= ~RK3328_CRU_PLL_FRACDIV_MASK; reg |= fracdiv << RK3328_CRU_PLL_FRACDIV_SHIFT; HWRITE4(sc, base + 0x0008, reg); /* Wait for PLL to stabilize. */ while ((HREAD4(sc, base + 0x0004) & RK3328_CRU_PLL_PLL_LOCK) == 0) delay(10); /* Switch back to normal mode. */ HWRITE4(sc, RK3328_CRU_CRU_MODE, (RK3328_CRU_CRU_MODE_MASK << 16 | RK3328_CRU_CRU_MODE_NORMAL) << mode_shift); return 0; } uint32_t rk3328_get_frequency(void *cookie, uint32_t *cells) { struct rkclock_softc *sc = cookie; uint32_t idx = cells[0]; switch (idx) { case RK3328_PLL_APLL: return rk3328_get_pll(sc, RK3328_CRU_APLL_CON(0)); break; case RK3328_PLL_DPLL: return rk3328_get_pll(sc, RK3328_CRU_DPLL_CON(0)); break; case RK3328_PLL_CPLL: return rk3328_get_pll(sc, RK3328_CRU_CPLL_CON(0)); break; case RK3328_PLL_GPLL: return rk3328_get_pll(sc, RK3328_CRU_GPLL_CON(0)); break; case RK3328_PLL_NPLL: return rk3328_get_pll(sc, RK3328_CRU_NPLL_CON(0)); break; case RK3328_ARMCLK: return rk3328_get_armclk(sc); case RK3328_XIN24M: return 24000000; /* * XXX The HDMIPHY and USB480M clocks are external. Returning * zero here will cause them to be ignored for reparenting * purposes. */ case RK3328_HDMIPHY: return 0; case RK3328_USB480M: return 0; default: break; } return rkclock_get_frequency(sc, idx); } int rk3328_set_frequency(void *cookie, uint32_t *cells, uint32_t freq) { struct rkclock_softc *sc = cookie; uint32_t idx = cells[0]; uint32_t reg, mux; switch (idx) { case RK3328_PLL_APLL: return rk3328_set_frac_pll(sc, RK3328_CRU_APLL_CON(0), freq); case RK3328_PLL_DPLL: return rk3328_set_pll(sc, RK3328_CRU_DPLL_CON(0), freq); case RK3328_PLL_CPLL: return rk3328_set_pll(sc, RK3328_CRU_CPLL_CON(0), freq); case RK3328_PLL_GPLL: return rk3328_set_frac_pll(sc, RK3328_CRU_GPLL_CON(0), freq); case RK3328_PLL_NPLL: return rk3328_set_pll(sc, RK3328_CRU_NPLL_CON(0), freq); case RK3328_ARMCLK: return rk3328_set_armclk(sc, freq); case RK3328_CLK_UART0: case RK3328_CLK_UART1: case RK3328_CLK_UART2: if (freq == rk3328_get_frequency(sc, &idx)) return 0; break; case RK3328_DCLK_LCDC: reg = HREAD4(sc, RK3328_CRU_CLKSEL_CON(40)); mux = (reg & RK3328_CRU_VOP_DCLK_SRC_SEL_MASK) >> RK3328_CRU_VOP_DCLK_SRC_SEL_SHIFT; idx = (mux == 0) ? RK3328_HDMIPHY : RK3328_DCLK_LCDC_SRC; return rk3328_set_frequency(sc, &idx, freq); default: break; } return rkclock_set_frequency(sc, idx, freq); } int rk3328_set_parent(void *cookie, uint32_t *cells, uint32_t *pcells) { struct rkclock_softc *sc = cookie; uint32_t idx = cells[0]; uint32_t parent; if (pcells[0] == sc->sc_phandle) parent = pcells[1]; else { char name[32]; int node; node = OF_getnodebyphandle(pcells[0]); if (node == 0) return -1; name[0] = 0; OF_getprop(node, "clock-output-names", name, sizeof(name)); name[sizeof(name) - 1] = 0; if (strcmp(name, "xin24m") != 0) return -1; parent = RK3328_XIN24M; } return rkclock_set_parent(sc, idx, parent); } void rk3328_enable(void *cookie, uint32_t *cells, int on) { uint32_t idx = cells[0]; /* * All clocks are enabled by default, so there is nothing for * us to do until we start disabling clocks. */ if (!on) printf("%s: 0x%08x\n", __func__, idx); } void rk3328_reset(void *cookie, uint32_t *cells, int on) { struct rkclock_softc *sc = cookie; uint32_t idx = cells[0]; uint32_t mask = (1 << (idx % 16)); HWRITE4(sc, RK3328_CRU_SOFTRST_CON(idx / 16), mask << 16 | (on ? mask : 0)); } /* * Rockchip RK3399 */ struct rkclock rk3399_clocks[] = { { RK3399_CLK_I2C1, RK3399_CRU_CLKSEL_CON(61), SEL(7, 7), DIV(6, 0), { RK3399_PLL_CPLL, RK3399_PLL_GPLL } }, { RK3399_CLK_I2C2, RK3399_CRU_CLKSEL_CON(62), SEL(7, 7), DIV(6, 0), { RK3399_PLL_CPLL, RK3399_PLL_GPLL } }, { RK3399_CLK_I2C3, RK3399_CRU_CLKSEL_CON(63), SEL(7, 7), DIV(6, 0), { RK3399_PLL_CPLL, RK3399_PLL_GPLL } }, { RK3399_CLK_I2C5, RK3399_CRU_CLKSEL_CON(61), SEL(15, 15), DIV(14, 8), { RK3399_PLL_CPLL, RK3399_PLL_GPLL } }, { RK3399_CLK_I2C6, RK3399_CRU_CLKSEL_CON(62), SEL(15, 15), DIV(14, 8), { RK3399_PLL_CPLL, RK3399_PLL_GPLL } }, { RK3399_CLK_I2C7, RK3399_CRU_CLKSEL_CON(63), SEL(15, 15), DIV(14, 8), { RK3399_PLL_CPLL, RK3399_PLL_GPLL } }, { RK3399_CLK_SDMMC, RK3399_CRU_CLKSEL_CON(16), SEL(10, 8), DIV(6, 0), { RK3399_PLL_CPLL, RK3399_PLL_GPLL, RK3399_PLL_NPLL, /* RK3399_PLL_PPLL */ 0, /* RK3399_USB_480M */ 0, RK3399_XIN24M } }, { RK3399_CLK_SDIO, RK3399_CRU_CLKSEL_CON(15), SEL(10, 8), DIV(6, 0), { RK3399_PLL_CPLL, RK3399_PLL_GPLL, RK3399_PLL_NPLL, /* RK3399_PLL_PPLL */ 0, /* RK3399_USB_480M */ 0, RK3399_XIN24M } }, { RK3399_CLK_TSADC, RK3399_CRU_CLKSEL_CON(27), SEL(15, 15), DIV(9, 0), { RK3399_XIN24M, RK3399_CLK_32K } }, { RK3399_CLK_UART0, RK3399_CRU_CLKSEL_CON(33), SEL(9, 8), 0, { 0, 0, RK3399_XIN24M } }, { RK3399_CLK_UART1, RK3399_CRU_CLKSEL_CON(34), SEL(9, 8), 0, { 0, 0, RK3399_XIN24M } }, { RK3399_CLK_UART2, RK3399_CRU_CLKSEL_CON(35), SEL(9, 8), 0, { 0, 0, RK3399_XIN24M } }, { RK3399_CLK_UART3, RK3399_CRU_CLKSEL_CON(36), SEL(9, 8), 0, { 0, 0, RK3399_XIN24M } }, { RK3399_ACLK_PERIPH, RK3399_CRU_CLKSEL_CON(14), SEL(7, 7), DIV(4, 0), { RK3399_PLL_CPLL, RK3399_PLL_GPLL } }, { RK3399_ACLK_PERILP0, RK3399_CRU_CLKSEL_CON(23), SEL(7, 7), DIV(4, 0), { RK3399_PLL_CPLL, RK3399_PLL_GPLL } }, { RK3399_ACLK_VIO, RK3399_CRU_CLKSEL_CON(42), SEL(7, 6), DIV(4, 0), { RK3399_PLL_CPLL, RK3399_PLL_GPLL, /* RK3399_PLL_PPLL */ } }, { RK3399_ACLK_CCI, RK3399_CRU_CLKSEL_CON(5), SEL(7, 6), DIV(4, 0), { RK3399_PLL_CPLL, RK3399_PLL_GPLL, RK3399_PLL_NPLL, RK3399_PLL_VPLL } }, { RK3399_ACLK_HDCP, RK3399_CRU_CLKSEL_CON(42), SEL(15, 14), DIV(12, 8), { RK3399_PLL_CPLL, RK3399_PLL_GPLL, /* RK3399_PLL_PPLL */ } }, { RK3399_ACLK_GIC_PRE, RK3399_CRU_CLKSEL_CON(56), SEL(15, 15), DIV(12, 8), { RK3399_PLL_CPLL, RK3399_PLL_GPLL } }, { RK3399_PCLK_PERIPH, RK3399_CRU_CLKSEL_CON(14), 0, DIV(14, 12), { RK3399_ACLK_PERIPH } }, { RK3399_PCLK_PERILP0, RK3399_CRU_CLKSEL_CON(23), 0, DIV(14, 12), { RK3399_ACLK_PERILP0 } }, { RK3399_PCLK_PERILP1, RK3399_CRU_CLKSEL_CON(25), 0, DIV(10, 8), { RK3399_HCLK_PERILP1 } }, { RK3399_PCLK_DDR, RK3399_CRU_CLKSEL_CON(6), SEL(15, 15), DIV(12, 8), { RK3399_PLL_CPLL, RK3399_PLL_GPLL } }, { RK3399_HCLK_PERIPH, RK3399_CRU_CLKSEL_CON(14), 0, DIV(9, 8), { RK3399_ACLK_PERIPH } }, { RK3399_HCLK_PERILP0, RK3399_CRU_CLKSEL_CON(23), 0, DIV(9, 8), { RK3399_ACLK_PERILP0 } }, { RK3399_HCLK_PERILP1, RK3399_CRU_CLKSEL_CON(25), SEL(7, 7), DIV(4, 0), { RK3399_PLL_CPLL, RK3399_PLL_GPLL } }, { RK3399_HCLK_SDMMC, RK3399_CRU_CLKSEL_CON(13), SEL(15, 15), DIV(12, 8), { RK3399_PLL_CPLL, RK3399_PLL_GPLL } }, { /* Sentinel */ } }; /* Some of our parent clocks live in the PMUCRU. */ struct rkclock_softc *rk3399_pmucru_sc; void rk3399_init(struct rkclock_softc *sc) { int i; /* PMUCRU instance should attach before us. */ KASSERT(rk3399_pmucru_sc != NULL); /* * The U-Boot shipped on the Theobroma Systems RK3399-Q7 * module is buggy and sets the parent of the clock for the * "big" cluster to LPLL. Undo that mistake here such that * the clocks of both clusters are independent. */ HWRITE4(sc, RK3399_CRU_CLKSEL_CON(2), RK3399_CRU_CORE_PLL_SEL_MASK << 16 | RK3399_CRU_CORE_PLL_SEL_BPLL); /* The code below assumes all clocks are enabled. Check this!. */ for (i = 0; i <= 34; i++) { if (HREAD4(sc, RK3399_CRU_CLKGATE_CON(i)) != 0x00000000) { printf("CRU_CLKGATE_CON%d: 0x%08x\n", i, HREAD4(sc, RK3399_CRU_CLKGATE_CON(i))); } } sc->sc_clocks = rk3399_clocks; } uint32_t rk3399_get_pll(struct rkclock_softc *sc, bus_size_t base) { uint32_t fbdiv, postdiv1, postdiv2, refdiv; uint32_t pll_work_mode; uint32_t reg; reg = HREAD4(sc, base + 0x000c); pll_work_mode = reg & RK3399_CRU_PLL_PLL_WORK_MODE_MASK; if (pll_work_mode == RK3399_CRU_PLL_PLL_WORK_MODE_SLOW) return 24000000; if (pll_work_mode == RK3399_CRU_PLL_PLL_WORK_MODE_DEEP_SLOW) return 32768; reg = HREAD4(sc, base + 0x0000); fbdiv = (reg & RK3399_CRU_PLL_FBDIV_MASK) >> RK3399_CRU_PLL_FBDIV_SHIFT; reg = HREAD4(sc, base + 0x0004); postdiv2 = (reg & RK3399_CRU_PLL_POSTDIV2_MASK) >> RK3399_CRU_PLL_POSTDIV2_SHIFT; postdiv1 = (reg & RK3399_CRU_PLL_POSTDIV1_MASK) >> RK3399_CRU_PLL_POSTDIV1_SHIFT; refdiv = (reg & RK3399_CRU_PLL_REFDIV_MASK) >> RK3399_CRU_PLL_REFDIV_SHIFT; return 24000000ULL * fbdiv / refdiv / postdiv1 / postdiv2; } int rk3399_set_pll(struct rkclock_softc *sc, bus_size_t base, uint32_t freq) { uint32_t fbdiv, postdiv1, postdiv2, refdiv; /* * It is not clear whether all combinations of the clock * dividers result in a stable clock. Therefore this function * only supports a limited set of PLL clock rates. For now * this set covers all the CPU frequencies supported by the * Linux kernel. */ switch (freq) { case 2208000000U: case 2184000000U: case 2088000000U: case 2040000000U: case 2016000000U: case 1992000000U: case 1896000000U: case 1800000000U: case 1704000000U: case 1608000000U: case 1512000000U: case 1488000000U: case 1416000000U: case 1200000000U: postdiv1 = postdiv2 = refdiv = 1; break; case 1008000000U: case 816000000U: case 696000000U: postdiv1 = 2; postdiv2 = refdiv = 1; break; case 676000000U: postdiv1 = 2; postdiv2 = 1; refdiv = 3; break; case 1000000000U: case 800000000U: case 600000000U: postdiv1 = 3; postdiv2 = refdiv = 1; break; case 594000000U: postdiv1 = 4; postdiv2 = refdiv = 1; break; case 408000000U: postdiv1 = postdiv2 = 2; refdiv = 1; break; case 216000000U: postdiv1 = 4; postdiv2 = 2; refdiv = 1; break; case 96000000U: postdiv1 = postdiv2 = 4; refdiv = 1; break; default: printf("%s: %d Hz\n", __func__, freq); return -1; } /* Calculate feedback divider. */ fbdiv = freq * postdiv1 * postdiv2 * refdiv / 24000000; /* * Select slow mode to guarantee a stable clock while we're * adjusting the PLL. */ HWRITE4(sc, base + 0x000c, RK3399_CRU_PLL_PLL_WORK_MODE_MASK << 16 | RK3399_CRU_PLL_PLL_WORK_MODE_SLOW); /* Set PLL rate. */ HWRITE4(sc, base + 0x0000, RK3399_CRU_PLL_FBDIV_MASK << 16 | fbdiv << RK3399_CRU_PLL_FBDIV_SHIFT); HWRITE4(sc, base + 0x0004, RK3399_CRU_PLL_POSTDIV2_MASK << 16 | postdiv2 << RK3399_CRU_PLL_POSTDIV2_SHIFT | RK3399_CRU_PLL_POSTDIV1_MASK << 16 | postdiv1 << RK3399_CRU_PLL_POSTDIV1_SHIFT | RK3399_CRU_PLL_REFDIV_MASK << 16 | refdiv << RK3399_CRU_PLL_REFDIV_SHIFT); /* Wait for PLL to stabilize. */ while ((HREAD4(sc, base + 0x0008) & RK3399_CRU_PLL_PLL_LOCK) == 0) delay(10); /* Switch back to normal mode. */ HWRITE4(sc, base + 0x000c, RK3399_CRU_PLL_PLL_WORK_MODE_MASK << 16 | RK3399_CRU_PLL_PLL_WORK_MODE_NORMAL); return 0; } uint32_t rk3399_armclk_parent(uint32_t mux) { switch (mux) { case 0: return RK3399_PLL_ALPLL; case 1: return RK3399_PLL_ABPLL; case 2: return RK3399_PLL_DPLL; case 3: return RK3399_PLL_GPLL; } return 0; } uint32_t rk3399_get_armclk(struct rkclock_softc *sc, bus_size_t clksel) { uint32_t reg, mux, div_con; uint32_t idx; reg = HREAD4(sc, clksel); mux = (reg & RK3399_CRU_CORE_PLL_SEL_MASK) >> RK3399_CRU_CORE_PLL_SEL_SHIFT; div_con = (reg & RK3399_CRU_CLK_CORE_DIV_CON_MASK) >> RK3399_CRU_CLK_CORE_DIV_CON_SHIFT; idx = rk3399_armclk_parent(mux); return rk3399_get_frequency(sc, &idx) / (div_con + 1); } int rk3399_set_armclk(struct rkclock_softc *sc, bus_size_t clksel, uint32_t freq) { uint32_t reg, mux; uint32_t old_freq, div; uint32_t idx; old_freq = rk3399_get_armclk(sc, clksel); if (freq == old_freq) return 0; reg = HREAD4(sc, clksel); mux = (reg & RK3399_CRU_CORE_PLL_SEL_MASK) >> RK3399_CRU_CORE_PLL_SEL_SHIFT; idx = rk3399_armclk_parent(mux); /* Keep the atclk_core and pclk_dbg clocks at or below 200 MHz. */ div = 1; while (freq / (div + 1) > 200000000) div++; /* When ramping up, set clock dividers first. */ if (freq > old_freq) { HWRITE4(sc, clksel, RK3399_CRU_CLK_CORE_DIV_CON_MASK << 16 | 0 << RK3399_CRU_CLK_CORE_DIV_CON_SHIFT | RK3399_CRU_ACLKM_CORE_DIV_CON_MASK << 16 | 1 << RK3399_CRU_ACLKM_CORE_DIV_CON_SHIFT); HWRITE4(sc, clksel + 0x0004, RK3399_CRU_PCLK_DBG_DIV_CON_MASK << 16 | div << RK3399_CRU_PCLK_DBG_DIV_CON_SHIFT | RK3399_CRU_ATCLK_CORE_DIV_CON_MASK << 16 | div << RK3399_CRU_ATCLK_CORE_DIV_CON_SHIFT); } rk3399_set_frequency(sc, &idx, freq); /* When ramping down, set clock dividers last. */ if (freq < old_freq) { HWRITE4(sc, clksel, RK3399_CRU_CLK_CORE_DIV_CON_MASK << 16 | 0 << RK3399_CRU_CLK_CORE_DIV_CON_SHIFT | RK3399_CRU_ACLKM_CORE_DIV_CON_MASK << 16 | 1 << RK3399_CRU_ACLKM_CORE_DIV_CON_SHIFT); HWRITE4(sc, clksel + 0x0004, RK3399_CRU_PCLK_DBG_DIV_CON_MASK << 16 | div << RK3399_CRU_PCLK_DBG_DIV_CON_SHIFT | RK3399_CRU_ATCLK_CORE_DIV_CON_MASK << 16 | div << RK3399_CRU_ATCLK_CORE_DIV_CON_SHIFT); } return 0; } uint32_t rk3399_get_frequency(void *cookie, uint32_t *cells) { struct rkclock_softc *sc = cookie; uint32_t idx = cells[0]; switch (idx) { case RK3399_PLL_ALPLL: return rk3399_get_pll(sc, RK3399_CRU_LPLL_CON(0)); case RK3399_PLL_ABPLL: return rk3399_get_pll(sc, RK3399_CRU_BPLL_CON(0)); case RK3399_PLL_DPLL: return rk3399_get_pll(sc, RK3399_CRU_DPLL_CON(0)); case RK3399_PLL_CPLL: return rk3399_get_pll(sc, RK3399_CRU_CPLL_CON(0)); case RK3399_PLL_GPLL: return rk3399_get_pll(sc, RK3399_CRU_GPLL_CON(0)); case RK3399_PLL_NPLL: return rk3399_get_pll(sc, RK3399_CRU_NPLL_CON(0)); case RK3399_PLL_VPLL: return rk3399_get_pll(sc, RK3399_CRU_VPLL_CON(0)); case RK3399_ARMCLKL: return rk3399_get_armclk(sc, RK3399_CRU_CLKSEL_CON(0)); case RK3399_ARMCLKB: return rk3399_get_armclk(sc, RK3399_CRU_CLKSEL_CON(2)); case RK3399_XIN24M: return 24000000; case RK3399_CLK_32K: return 32768; default: break; } return rkclock_get_frequency(sc, idx); } int rk3399_set_frequency(void *cookie, uint32_t *cells, uint32_t freq) { struct rkclock_softc *sc = cookie; uint32_t idx = cells[0]; switch (idx) { case RK3399_PLL_ALPLL: return rk3399_set_pll(sc, RK3399_CRU_LPLL_CON(0), freq); case RK3399_PLL_ABPLL: return rk3399_set_pll(sc, RK3399_CRU_BPLL_CON(0), freq); case RK3399_PLL_CPLL: return rk3399_set_pll(sc, RK3399_CRU_CPLL_CON(0), freq); case RK3399_PLL_GPLL: return rk3399_set_pll(sc, RK3399_CRU_GPLL_CON(0), freq); case RK3399_PLL_NPLL: return rk3399_set_pll(sc, RK3399_CRU_NPLL_CON(0), freq); case RK3399_ARMCLKL: return rk3399_set_armclk(sc, RK3399_CRU_CLKSEL_CON(0), freq); case RK3399_ARMCLKB: return rk3399_set_armclk(sc, RK3399_CRU_CLKSEL_CON(2), freq); default: break; } return rkclock_set_frequency(sc, idx, freq); } void rk3399_enable(void *cookie, uint32_t *cells, int on) { uint32_t idx = cells[0]; /* * All clocks are enabled by default, so there is nothing for * us to do until we start disabling clocks. */ if (!on) printf("%s: 0x%08x\n", __func__, idx); } void rk3399_reset(void *cookie, uint32_t *cells, int on) { struct rkclock_softc *sc = cookie; uint32_t idx = cells[0]; uint32_t mask = (1 << (idx % 16)); HWRITE4(sc, RK3399_CRU_SOFTRST_CON(idx / 16), mask << 16 | (on ? mask : 0)); } /* PMUCRU */ struct rkclock rk3399_pmu_clocks[] = { { RK3399_CLK_I2C0, RK3399_PMUCRU_CLKSEL_CON(2), 0, DIV(6, 0), { RK3399_PLL_PPLL } }, { RK3399_CLK_I2C4, RK3399_PMUCRU_CLKSEL_CON(3), 0, DIV(6, 0), { RK3399_PLL_PPLL } }, { RK3399_CLK_I2C8, RK3399_PMUCRU_CLKSEL_CON(2), 0, DIV(14, 8), { RK3399_PLL_PPLL } }, { /* Sentinel */ } }; void rk3399_pmu_init(struct rkclock_softc *sc) { sc->sc_clocks = rk3399_pmu_clocks; rk3399_pmucru_sc = sc; } uint32_t rk3399_pmu_get_frequency(void *cookie, uint32_t *cells) { struct rkclock_softc *sc = cookie; uint32_t idx = cells[0]; switch (idx) { case RK3399_PLL_PPLL: return rk3399_get_pll(sc, RK3399_PMUCRU_PPLL_CON(0)); default: break; } return rkclock_get_frequency(sc, idx); } int rk3399_pmu_set_frequency(void *cookie, uint32_t *cells, uint32_t freq) { struct rkclock_softc *sc = cookie; uint32_t idx = cells[0]; switch (idx) { case RK3399_PLL_PPLL: return rk3399_set_pll(sc, RK3399_PMUCRU_PPLL_CON(0), freq); break; default: break; } return rkclock_set_frequency(sc, idx, freq); } void rk3399_pmu_enable(void *cookie, uint32_t *cells, int on) { uint32_t idx = cells[0]; switch (idx) { case RK3399_CLK_I2C0: case RK3399_CLK_I2C4: case RK3399_CLK_I2C8: case RK3399_PCLK_I2C0: case RK3399_PCLK_I2C4: case RK3399_PCLK_I2C8: /* Enabled by default. */ break; default: printf("%s: 0x%08x\n", __func__, idx); break; } } void rk3399_pmu_reset(void *cookie, uint32_t *cells, int on) { uint32_t idx = cells[0]; printf("%s: 0x%08x\n", __func__, idx); }