diff options
| author | Mark Kettenis <kettenis@cvs.openbsd.org> | 2023-03-10 10:54:30 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@cvs.openbsd.org> | 2023-03-10 10:54:30 +0000 |
| commit | 3b7773cc409f86403f78ec6cbe99209b1c36ae78 (patch) | |
| tree | bb5d2e54f90ac0f986a308c2bf911e7217c8b9e1 /sys/dev | |
| parent | be10c5757471ccee4110273ada5f8c25d8b1743f (diff) | |
Implement setting the parent clock for RK356x. This includes code for
setting external parent clocks, which is needed to switch to the clock
provided by the Ethernet PHY.
ok patrick@
Diffstat (limited to 'sys/dev')
| -rw-r--r-- | sys/dev/fdt/rkclock.c | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/sys/dev/fdt/rkclock.c b/sys/dev/fdt/rkclock.c index 9e6458acb19..28cbddf7a3a 100644 --- a/sys/dev/fdt/rkclock.c +++ b/sys/dev/fdt/rkclock.c @@ -1,4 +1,4 @@ -/* $OpenBSD: rkclock.c,v 1.66 2023/02/26 12:39:07 kettenis Exp $ */ +/* $OpenBSD: rkclock.c,v 1.67 2023/03/10 10:54:29 kettenis Exp $ */ /* * Copyright (c) 2017, 2018 Mark Kettenis <kettenis@openbsd.org> * @@ -299,6 +299,7 @@ void rk3399_pmu_reset(void *, uint32_t *, int); void rk3568_init(struct rkclock_softc *); uint32_t rk3568_get_frequency(void *, uint32_t *); int rk3568_set_frequency(void *, uint32_t *, uint32_t); +int rk3568_set_parent(void *, uint32_t *, uint32_t *); void rk3568_enable(void *, uint32_t *, int); void rk3568_reset(void *, uint32_t *, int); @@ -359,7 +360,7 @@ const struct rkclock_compat rkclock_compat[] = { { "rockchip,rk3568-cru", 1, rk3568_init, rk3568_enable, rk3568_get_frequency, - rk3568_set_frequency, NULL, + rk3568_set_frequency, rk3568_set_parent, rk3568_reset }, { @@ -3494,6 +3495,38 @@ rk3568_set_frequency(void *cookie, uint32_t *cells, uint32_t freq) return rkclock_set_frequency(sc, idx, freq); } +int +rk3568_set_parent(void *cookie, uint32_t *cells, uint32_t *pcells) +{ + struct rkclock_softc *sc = cookie; + char buf[64] = {}; + int len, node; + + if (pcells[0] != sc->sc_phandle) { + node = OF_getnodebyphandle(pcells[0]); + if (node == 0) + return -1; + len = OF_getproplen(node, "clock-output-names"); + if (len <= 0 || len > sizeof(buf)) + return -1; + OF_getprop(node, "clock-output-names", buf, sizeof(buf)); + + if (strcmp(buf, "gmac0_clkin") == 0) { + return rkclock_set_parent(sc, cells[0], + RK3568_GMAC0_CLKIN); + } + if (strcmp(buf, "gmac1_clkin") == 0) { + return rkclock_set_parent(sc, cells[0], + RK3568_GMAC1_CLKIN); + } + + printf("%s: 0x%08x 0x%08x\n", __func__, cells[0], pcells[0]); + return -1; + } + + return rkclock_set_parent(sc, cells[0], pcells[1]); +} + void rk3568_enable(void *cookie, uint32_t *cells, int on) { |