From d47e3d27078dd7419c41e1f8f56dcc221511dd5d Mon Sep 17 00:00:00 2001 From: "Haijun.Zhang" Date: Fri, 10 Jan 2014 13:52:18 +0800 Subject: 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 Acked-by: Pantelis Antoniou Reviewed-by: York Sun --- drivers/mmc/fsl_esdhc.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/mmc/fsl_esdhc.c') diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c index f79f167..7b146a3 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); -- cgit v1.1