[U-Boot] [PATCH] T210: P2571: Enable SD-card power via PMIC LDO2

[Tom Warren <twarren@nvidia.com>]

This was done in the 32-bit AVP loader (SPL) but is
board-specific so should be moved to the CPU portion.

Signed-off-by: Tom Warren <twarren@nvidia.com>
---
 board/nvidia/p2571/Makefile        |  1 -
 board/nvidia/p2571/max77620_init.c | 85 --------------------------------------
 board/nvidia/p2571/max77620_init.h |  3 +-
 board/nvidia/p2571/p2571.c         | 22 ++++++++++
 4 files changed, 24 insertions(+), 87 deletions(-)
 delete mode 100644 board/nvidia/p2571/max77620_init.c

diff --git a/board/nvidia/p2571/Makefile b/board/nvidia/p2571/Makefile
index 223062e..627b7ef 100644
--- a/board/nvidia/p2571/Makefile
+++ b/board/nvidia/p2571/Makefile
@@ -5,5 +5,4 @@
 # SPDX-License-Identifier:     GPL-2.0+
 #
 
-obj-y	+= max77620_init.o
 obj-y	+= p2571.o
diff --git a/board/nvidia/p2571/max77620_init.c b/board/nvidia/p2571/max77620_init.c
deleted file mode 100644
index ed8d4dc..0000000
--- a/board/nvidia/p2571/max77620_init.c
+++ /dev/null
@@ -1,85 +0,0 @@
-/*
- * (C) Copyright 2013-2015
- * NVIDIA Corporation <www.nvidia.com>
- *
- * SPDX-License-Identifier:     GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/arch-tegra/tegra_i2c.h>
-#include "max77620_init.h"
-
-/* MAX77620-PMIC-specific early init code - get CPU rails up, etc */
-
-void tegra_i2c_ll_write_addr(uint addr, uint config)
-{
-	struct i2c_ctlr *reg = (struct i2c_ctlr *)TEGRA_DVC_BASE;
-
-	writel(addr, &reg->cmd_addr0);
-	writel(config, &reg->cnfg);
-}
-
-void tegra_i2c_ll_write_data(uint data, uint config)
-{
-	struct i2c_ctlr *reg = (struct i2c_ctlr *)TEGRA_DVC_BASE;
-
-	writel(data, &reg->cmd_data1);
-	writel(config, &reg->cnfg);
-}
-
-void pmic_enable_cpu_vdd(void)
-{
-	uint reg;
-	debug("%s entry\n", __func__);
-
-	/* Setup/Enable GPIO5 - VDD_CPU_REG_EN */
-	debug("%s: Setting GPIO5 to enable CPU regulator\n", __func__);
-	/* B3=1=logic high,B2=dontcare,B1=0=output,B0=1=push-pull */
-	reg = 0x0900 | MAX77620_GPIO5_REG;
-	tegra_i2c_ll_write_addr(MAX77620_I2C_ADDR, 2);
-	tegra_i2c_ll_write_data(reg, I2C_SEND_2_BYTES);
-	udelay(10 * 1000);
-
-	/* Setup/Enable GPIO1 - VDD_HDMI_5V0_BST_EN */
-	debug("%s: Setting GPIO1 to enable HDMI\n", __func__);
-	reg = 0x0900 | MAX77620_GPIO1_REG;
-	tegra_i2c_ll_write_addr(MAX77620_I2C_ADDR, 2);
-	tegra_i2c_ll_write_data(reg, I2C_SEND_2_BYTES);
-	udelay(10 * 1000);
-
-	/* GPIO 0,1,5,6,7 = GPIO, 2,3,4 = alt mode */
-	reg = 0x1C00 | MAX77620_AME_GPIO;
-	tegra_i2c_ll_write_addr(MAX77620_I2C_ADDR, 2);
-	tegra_i2c_ll_write_data(reg, I2C_SEND_2_BYTES);
-	udelay(10 * 1000);
-
-	/* Disable SD1 Remote Sense, Set SD1 for LPDDR4 to 1.125v */
-	debug("%s: Set SD1 for LPDDR4, disable SD1RS, voltage to 1.125v\n",
-	      __func__);
-	/* bit1=0, SD1 remote sense disabled */
-	reg = 0x0400 | MAX77620_CNFG2SD_REG;
-	tegra_i2c_ll_write_addr(MAX77620_I2C_ADDR, 2);
-	tegra_i2c_ll_write_data(reg, I2C_SEND_2_BYTES);
-	udelay(10 * 1000);
-
-	/* SD1 output = 1.125V */
-	reg = 0x2A00 | MAX77620_SD1_REG;
-	tegra_i2c_ll_write_addr(MAX77620_I2C_ADDR, 2);
-	tegra_i2c_ll_write_data(reg, I2C_SEND_2_BYTES);
-	udelay(10 * 1000);
-
-	debug("%s: Set LDO2 for VDDIO_SDMMC_AP power to 3.3V\n", __func__);
-	/* 0xF2 for 3.3v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
-	reg = 0xF200 | MAX77620_CNFG1_L2_REG;
-	tegra_i2c_ll_write_addr(MAX77620_I2C_ADDR, 2);
-	tegra_i2c_ll_write_data(reg, I2C_SEND_2_BYTES);
-	udelay(10 * 1000);
-
-	debug("%s: Set LDO1 for USB3 phy power to 1.05V??\n", __func__);
-	/* 0xCA for 105v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
-	reg = 0xCA00 | MAX77620_CNFG1_L1_REG;
-	tegra_i2c_ll_write_addr(MAX77620_I2C_ADDR, 2);
-	tegra_i2c_ll_write_data(reg, I2C_SEND_2_BYTES);
-	udelay(10 * 1000);
-}
diff --git a/board/nvidia/p2571/max77620_init.h b/board/nvidia/p2571/max77620_init.h
index 9d5cce7..92c3719 100644
--- a/board/nvidia/p2571/max77620_init.h
+++ b/board/nvidia/p2571/max77620_init.h
@@ -10,7 +10,8 @@
 
 /* MAX77620-PMIC-specific early init regs */
 
-#define MAX77620_I2C_ADDR		0x78		/* or 0x3C 7-bit */
+#define MAX77620_I2C_ADDR		0x78
+#define MAX77620_I2C_ADDR_7BIT		0x3C
 
 #define MAX77620_SD0_REG		0x16
 #define MAX77620_SD1_REG		0x17
diff --git a/board/nvidia/p2571/p2571.c b/board/nvidia/p2571/p2571.c
index fc710c1..842242c 100644
--- 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
-- 
1.8.2.1.610.g562af5b