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ramips: mtk-mmc: mt76x8: check ESD_MODE before applying AGPIO_CFG 

Since mt76x8an ver1 eco2, SDXC pins can be switched to the
following pinmap:
sd_d1  -> PAD_I2S_SDI
sd_d0  -> PAD_I2S_WS
sd_cmd -> PAD_I2S_CLK
sd_d3  -> PAD_I2C_SCLK
sd_d2  -> PAD_I2C_SD
sd_clk -> PAD_GPIO0
sd_wp  -> PAD_TXD1
sd_cd  -> PAD_RXD1

To use this pinmap, one would need to set ESD_MODE bit (bit 15)
to 1 in GPIO1_MODE and switch other used pads into GPIO mode.
In this mode, we don't need to switch ethernet pins to digital
pad.

Check ESD_MODE bit before applying AGPIO_CFG and use rt_sysc_m32
to set it.

Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
master
Chuanhong Guo 2019-07-13 17:59:03 +08:00
parent 4a06d62f0e
commit fae125781e
1 changed files with 4 additions and 8 deletions
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12
target/linux/ramips/files-4.14/drivers/mmc/host/mtk-mmc/sd.c
View File

@ -2205,16 +2205,12 @@ static int msdc_drv_probe(struct platform_device *pdev)
struct msdc_host *host;
struct msdc_hw *hw;
int ret;
u32 reg;
//FIXME: this should be done by pinconf and not by the sd driver
if (ralink_soc == MT762X_SOC_MT7688 ||
ralink_soc == MT762X_SOC_MT7628AN) {
/* set EPHY pads to digital mode */
reg = sdr_read32((void __iomem *)(RALINK_SYSCTL_BASE + 0x3c));
reg |= 0x1e << 16;
sdr_write32((void __iomem *)(RALINK_SYSCTL_BASE + 0x3c), reg);
}
if ((ralink_soc == MT762X_SOC_MT7688 ||
ralink_soc == MT762X_SOC_MT7628AN) &&
(!(rt_sysc_r32(0x60) & BIT(15))))
rt_sysc_m32(0xf << 17, 0xf << 17, 0x3c);
hw = &msdc0_hw;