T210: P2571: Enable SD-card power via PMIC LDO2

[karo-tx-uboot.git] / board / nvidia / p2571 / p2571.c

diff --git a/board/nvidia/p2571/p2571.c b/board/nvidia/p2571/p2571.c
index fc710c17505dbe8b5ef7033a3406442abaae2250..842242cf5cddbeed9b16da1514e674a8d27779f3 100644 (file)
--- a/board/nvidia/p2571/p2571.c
+++ b/board/nvidia/p2571/p2571.c
@@ -6,10 +6,32 @@
  */
 
 #include <common.h>
+#include <i2c.h>
 #include <asm/arch/gpio.h>
 #include <asm/arch/pinmux.h>
+#include "max77620_init.h"
 #include "pinmux-config-p2571.h"
 
+void pin_mux_mmc(void)
+{
+       struct udevice *dev;
+       uchar val;
+       int ret;
+
+       /* Turn on MAX77620 LDO2 to 3.3V for SD card power */
+       debug("%s: Set LDO2 for VDDIO_SDMMC_AP power to 3.3V\n", __func__);
+       ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev);
+       if (ret) {
+               printf("%s: Cannot find MAX77620 I2C chip\n", __func__);
+               return;
+       }
+       /* 0xF2 for 3.3v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
+       val = 0xF2;
+       ret = dm_i2c_write(dev, MAX77620_CNFG1_L2_REG, &val, 1);
+       if (ret)
+               printf("i2c_write 0 0x3c 0x27 failed: %d\n", ret);
+}
+
 /*
  * Routine: pinmux_init
  * Description: Do individual peripheral pinmux configs