From 4692708d452b054fe5996405ee5cfff1f3b23070 Mon Sep 17 00:00:00 2001 From: Jason Liu Date: Fri, 25 Nov 2011 00:18:04 +0000 Subject: [PATCH] i.mx: fsl_esdhc: add the i.mx6q support The mmc host controller on the i.mx6q is called usdhc which is redesigned based on the freescale esdhc controller. The usdhc controller is almost compatible with esdhc except it adds one mix register to support debug/SD3.0 and move the low bit 0-6 of XFERTYP register to the mix control reg low bit 0-6. Thus on i.mx6q, we have the following compared with the previous soc: (can refer to RM of chapter 56.3.3) i.mx6q: mix control: bit 31 - bit 7: Added for debug/SD3.0 support bit 6 - bit 0: move in the XFERTYP register bit 6-0 on previous soc XFERTYP register: bit 31 - bit 7: the same as before, bit 6 - bit 0: no-use previous soc mix control: no XFERTYP register: bit 31 - bit 0: xfertype information Signed-off-by: Jason Liu Cc: Andy Fleming Cc: Stefano Babic Acked-by: Stefano Babic --- drivers/mmc/fsl_esdhc.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c index ec953f07d7..ddd1b4c6f3 100644 --- a/drivers/mmc/fsl_esdhc.c +++ b/drivers/mmc/fsl_esdhc.c @@ -58,7 +58,8 @@ struct fsl_esdhc { uint autoc12err; uint hostcapblt; uint wml; - char reserved1[8]; + uint mixctrl; + char reserved1[4]; uint fevt; char reserved2[168]; uint hostver; @@ -298,8 +299,13 @@ esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) /* Send the command */ esdhc_write32(®s->cmdarg, cmd->cmdarg); +#if defined(CONFIG_FSL_USDHC) + esdhc_write32(®s->mixctrl, + (esdhc_read32(®s->mixctrl) & 0xFFFFFF80) | (xfertyp & 0x7F)); + esdhc_write32(®s->xfertyp, xfertyp & 0xFFFF0000); +#else esdhc_write32(®s->xfertyp, xfertyp); - +#endif /* Wait for the command to complete */ while (!(esdhc_read32(®s->irqstat) & IRQSTAT_CC)) ; @@ -482,7 +488,7 @@ int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg) mmc = malloc(sizeof(struct mmc)); - sprintf(mmc->name, "FSL_ESDHC"); + sprintf(mmc->name, "FSL_SDHC"); regs = (struct fsl_esdhc *)cfg->esdhc_base; /* First reset the eSDHC controller */