diff options
| author | Mark Kettenis <kettenis@cvs.openbsd.org> | 2016-05-06 20:24:36 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@cvs.openbsd.org> | 2016-05-06 20:24:36 +0000 |
| commit | 7e0b61f65cf01c596230b1bb3374a41352008ef7 (patch) | |
| tree | 4597aa9b9234be41091e8d57f981eb944c223140 | |
| parent | 583eff0d81572772b900e407c162ad0248ed25b2 (diff) | |
Reset the bus width back to 1-bit when resetting the host. Makes imxesdhc(4)
work on the cubox-i, whereu-boot leaves the controller in 4-bit mode.
| -rw-r--r-- | sys/arch/armv7/imx/imxesdhc.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/arch/armv7/imx/imxesdhc.c b/sys/arch/armv7/imx/imxesdhc.c index 43119ef05e0..605946a6776 100644 --- a/sys/arch/armv7/imx/imxesdhc.c +++ b/sys/arch/armv7/imx/imxesdhc.c @@ -1,4 +1,4 @@ -/* $OpenBSD: imxesdhc.c,v 1.15 2016/05/05 11:01:08 kettenis Exp $ */ +/* $OpenBSD: imxesdhc.c,v 1.16 2016/05/06 20:24:35 kettenis Exp $ */ /* * Copyright (c) 2009 Dale Rahn <drahn@openbsd.org> * Copyright (c) 2006 Uwe Stuehler <uwe@openbsd.org> @@ -124,6 +124,9 @@ #define SDHC_MIX_CTRL_AC12EN (1 << 2) #define SDHC_MIX_CTRL_DTDSEL (1 << 4) #define SDHC_MIX_CTRL_MSBSEL (1 << 5) +#define SDHC_PROT_CTRL_DTW_MASK (0x3 << 1) +#define SDHC_PROT_CTRL_DTW_4BIT (1 << 1) +#define SDHC_PROT_CTRL_DTW_8BIT (1 << 2) #define SDHC_PROT_CTRL_DMASEL_SDMA_MASK (0x3 << 8) #define SDHC_HOST_CTRL_CAP_MBL_SHIFT 16 #define SDHC_HOST_CTRL_CAP_MBL_MASK 0x7 @@ -410,6 +413,9 @@ imxesdhc_host_reset(sdmmc_chipset_handle_t sch) HWRITE4(sc, SDHC_PROT_CTRL, HREAD4(sc, SDHC_PROT_CTRL) & ~SDHC_PROT_CTRL_DMASEL_SDMA_MASK); + /* Switch back to 1-bit bus. */ + HCLR4(sc, SDHC_PROT_CTRL, SDHC_PROT_CTRL_DTW_MASK); + splx(s); return 0; } |