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| author | Haijun.Zhang <Haijun.Zhang@freescale.com> | 2014-01-10 13:52:18 +0800 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2014-01-22 08:56:34 -0800 |
| commit | d47e3d27078dd7419c41e1f8f56dcc221511dd5d (patch) | |
| tree | 4c20938c8d78343fd3c97af3959800e1cbdc1c59 /drivers | |
| parent | f7e27cc5ee13aebce4e81fcf908d22d2d55d61e0 (diff) | |
| download | blackbird-obmc-uboot-d47e3d27078dd7419c41e1f8f56dcc221511dd5d.tar.gz blackbird-obmc-uboot-d47e3d27078dd7419c41e1f8f56dcc221511dd5d.zip | |
esdhc: Detecting 8 bit width before mmc initialization
The upper 4 data signals of esdhc are shared with spi flash.
So detect if the upper 4 pins are assigned to esdhc before
enable sdhc 8 bit width.
Signed-off-by: Haijun Zhang <haijun.zhang@freescale.com>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
Reviewed-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/fsl_esdhc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c index f79f167a7d..7b146a3604 100644 --- a/drivers/mmc/fsl_esdhc.c +++ b/drivers/mmc/fsl_esdhc.c @@ -596,6 +596,11 @@ int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg) if (caps & ESDHC_HOSTCAPBLT_HSS) mmc->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS; +#ifdef CONFIG_ESDHC_DETECT_8_BIT_QUIRK + if (CONFIG_ESDHC_DETECT_8_BIT_QUIRK) + mmc->host_caps &= ~MMC_MODE_8BIT; +#endif + mmc->f_min = 400000; mmc->f_max = MIN(gd->arch.sdhc_clk, 52000000); |
