[U-Boot] [PATCH 3/6] mxs: mmc: Fix MMC reset on iMX23
Marek Vasut
marex at denx.de
Wed Jan 23 02:01:02 CET 2013
From: Otavio Salvador <otavio at ossystems.com.br>
This does the same reset mask as done in v3.7 Linux kernel code.
The block is properly configured for MMC operation that way.
Signed-off-by: Otavio Salvador <otavio at ossystems.com.br>
Cc: Marek Vasut <marex at denx.de>
Cc: Fabio Estevam <fabio.estevam at freescale.com>
Cc: Stefano Babic <sbabic at denx.de>
---
drivers/mmc/mxsmmc.c | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)
diff --git a/drivers/mmc/mxsmmc.c b/drivers/mmc/mxsmmc.c
index 0c4cd54..9d71202 100644
--- a/drivers/mmc/mxsmmc.c
+++ b/drivers/mmc/mxsmmc.c
@@ -334,11 +334,17 @@ static int mxsmmc_init(struct mmc *mmc)
/* Reset SSP */
mxs_reset_block(&ssp_regs->hw_ssp_ctrl0_reg);
- /* 8 bits word length in MMC mode */
- clrsetbits_le32(&ssp_regs->hw_ssp_ctrl1,
- SSP_CTRL1_SSP_MODE_MASK | SSP_CTRL1_WORD_LENGTH_MASK |
- SSP_CTRL1_DMA_ENABLE,
- SSP_CTRL1_SSP_MODE_SD_MMC | SSP_CTRL1_WORD_LENGTH_EIGHT_BITS);
+ /* Reconfigure the SSP block for MMC operation */
+ writel(SSP_CTRL1_SSP_MODE_SD_MMC |
+ SSP_CTRL1_WORD_LENGTH_EIGHT_BITS |
+ SSP_CTRL1_DMA_ENABLE |
+ SSP_CTRL1_POLARITY |
+ SSP_CTRL1_RECV_TIMEOUT_IRQ_EN |
+ SSP_CTRL1_DATA_CRC_IRQ_EN |
+ SSP_CTRL1_DATA_TIMEOUT_IRQ_EN |
+ SSP_CTRL1_RESP_TIMEOUT_IRQ_EN |
+ SSP_CTRL1_RESP_ERR_IRQ_EN,
+ &ssp_regs->hw_ssp_ctrl1_set);
/* Set initial bit clock 400 KHz */
mxs_set_ssp_busclock(priv->id, 400);
--
1.7.10.4
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