p2571.c 1.0 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344
  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 <asm/gpio.h>
  12. #include "max77620_init.h"
  13. void pin_mux_mmc(void)
  14. {
  15. struct udevice *dev;
  16. uchar val;
  17. int ret;
  18. /* Turn on MAX77620 LDO2 to 3.3V for SD card power */
  19. debug("%s: Set LDO2 for VDDIO_SDMMC_AP power to 3.3V\n", __func__);
  20. ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev);
  21. if (ret) {
  22. printf("%s: Cannot find MAX77620 I2C chip\n", __func__);
  23. return;
  24. }
  25. /* 0xF2 for 3.3v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
  26. val = 0xF2;
  27. ret = dm_i2c_write(dev, MAX77620_CNFG1_L2_REG, &val, 1);
  28. if (ret)
  29. printf("i2c_write 0 0x3c 0x27 failed: %d\n", ret);
  30. }
  31. /*
  32. * Routine: start_cpu_fan
  33. * Description: Enable/start PWM CPU fan on P2571
  34. */
  35. void start_cpu_fan(void)
  36. {
  37. /* GPIO_PE4 is PS_VDD_FAN_ENABLE */
  38. gpio_request(TEGRA_GPIO(E, 4), "FAN_VDD");
  39. gpio_direction_output(TEGRA_GPIO(E, 4), 1);
  40. }