e2220-1170.c 810 B

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * (C) Copyright 2013-2019
  4. * NVIDIA Corporation <www.nvidia.com>
  5. */
  6. #include <common.h>
  7. #include <i2c.h>
  8. #include <log.h>
  9. #include <asm/arch/gpio.h>
  10. #include <asm/arch/pinmux.h>
  11. #include "../p2571/max77620_init.h"
  12. void pin_mux_mmc(void)
  13. {
  14. struct udevice *dev;
  15. uchar val;
  16. int ret;
  17. /* Turn on MAX77620 LDO2 to 3.3V for SD card power */
  18. debug("%s: Set LDO2 for VDDIO_SDMMC_AP power to 3.3V\n", __func__);
  19. ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev);
  20. if (ret) {
  21. printf("%s: Cannot find MAX77620 I2C chip\n", __func__);
  22. return;
  23. }
  24. /* 0xF2 for 3.3v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
  25. val = 0xF2;
  26. ret = dm_i2c_write(dev, MAX77620_CNFG1_L2_REG, &val, 1);
  27. if (ret)
  28. printf("i2c_write 0 0x3c 0x27 failed: %d\n", ret);
  29. }