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ramips: mmc: Fix init for MT7628AN

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There is another thing about crc to do when initialize SD card on
MT7628.
This commit is to fix this init issue.

Signed-off-by: LoveSy <shana@zju.edu.cn>
This commit is contained in:
LoveSy 2018-05-28 09:46:28 +08:00 committed by John Crispin
parent b4d4e4ceb5
commit 3a8efaef00
2 changed files with 16 additions and 1 deletions
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1
target/linux/ramips/files-4.14/drivers/mmc/host/mtk-mmc/mt6575_sd.h
View file

@ -234,6 +234,7 @@ enum {
#define MSDC_IOCON_SDR104CKS (0x1 << 0) /* RW */ #define MSDC_IOCON_SDR104CKS (0x1 << 0) /* RW */
#define MSDC_IOCON_RSPL (0x1 << 1) /* RW */ #define MSDC_IOCON_RSPL (0x1 << 1) /* RW */
#define MSDC_IOCON_DSPL (0x1 << 2) /* RW */ #define MSDC_IOCON_DSPL (0x1 << 2) /* RW */
#define MSDC_IOCON_WDSPL (0x1 << 8) /* RW */
#define MSDC_IOCON_DDLSEL (0x1 << 3) /* RW */ #define MSDC_IOCON_DDLSEL (0x1 << 3) /* RW */
#define MSDC_IOCON_DDR50CKD (0x1 << 4) /* RW */ #define MSDC_IOCON_DDR50CKD (0x1 << 4) /* RW */
#define MSDC_IOCON_DSPLSEL (0x1 << 5) /* RW */ #define MSDC_IOCON_DSPLSEL (0x1 << 5) /* RW */

16
target/linux/ramips/files-4.14/drivers/mmc/host/mtk-mmc/sd.c
View file

@ -1796,6 +1796,9 @@ static void msdc_ops_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
MSDC_SMPL_FALLING); MSDC_SMPL_FALLING);
sdr_set_field(MSDC_IOCON, MSDC_IOCON_DSPL, sdr_set_field(MSDC_IOCON, MSDC_IOCON_DSPL,
MSDC_SMPL_FALLING); MSDC_SMPL_FALLING);
/* sdxc: set sample crc by clock falling edge. Added by zhangzf */
if (ralink_soc == MT762X_SOC_MT7628AN)
sdr_set_field(MSDC_IOCON, MSDC_IOCON_WDSPL, MSDC_SMPL_FALLING);
//} /* for tuning debug */ //} /* for tuning debug */
} else { /* default value */ } else { /* default value */
sdr_write32(MSDC_IOCON, 0x00000000); sdr_write32(MSDC_IOCON, 0x00000000);
@ -2205,7 +2208,7 @@ static int msdc_drv_probe(struct platform_device *pdev)
struct msdc_host *host; struct msdc_host *host;
struct msdc_hw *hw; struct msdc_hw *hw;
int ret; int ret;
u32 reg; u32 reg, reg1;
// Set the pins for sdxc to sdxc mode // Set the pins for sdxc to sdxc mode
//FIXME: this should be done by pinctl and not by the sd driver //FIXME: this should be done by pinctl and not by the sd driver
@ -2215,6 +2218,17 @@ static int msdc_drv_probe(struct platform_device *pdev)
0x60)) & ~(0x3 << 18); 0x60)) & ~(0x3 << 18);
if (ralink_soc == MT762X_SOC_MT7620A) if (ralink_soc == MT762X_SOC_MT7620A)
reg |= 0x1 << 18; reg |= 0x1 << 18;
}
else if (ralink_soc == MT762X_SOC_MT7628AN) {
/* Fixed MT7628 SDXC init by zhangzf */
reg &= ~((0x3 << 0)|(0x3 << 6)|(0x3 << 10)|(0x1 << 15)|(0x3 << 20)|(0x3 << 24));
reg |= ((0x1 << 0)|(0x1 << 6)|(0x1 << 10)|(0x1 << 15)|(0x1 << 20)|(0x1 << 24));
#if defined (CONFIG_MTK_MMC_EMMC_8BIT)
reg |= 0x3 << 26 | 0x3 << 28 | 0x3 << 30;
#endif
reg1 = sdr_read32((void __iomem *)(RALINK_SYSCTL_BASE + 0x1340));
reg1 |= (0x1 << 11); //Normal mode(AP mode), SDXC CLK=PAD_GPIO0=GPIO11, driving = 8mA
sdr_write32((void __iomem *)(RALINK_SYSCTL_BASE + 0x1340), reg1);
} else { } else {
reg = sdr_read32((void __iomem *)(RALINK_SYSCTL_BASE + 0x3c)); reg = sdr_read32((void __iomem *)(RALINK_SYSCTL_BASE + 0x3c));
reg |= 0x1e << 16; reg |= 0x1e << 16;