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authorTom Warren <twarren@nvidia.com>2015-07-28 15:13:17 -0700
committerTom Warren <twarren@nvidia.com>2015-08-05 15:22:51 -0700
commit4132bc90e63428702ae9adf41756087d670fc4f1 (patch)
treeaf534fb7a3337ababca8590482ad12c2cba1b1e1 /board/nvidia
parenta5325cd5e91f77a2214e80198ae31c1d8b7e7c3c (diff)
T210: P2571: Enable SD-card power via PMIC LDO2
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> Acked-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'board/nvidia')
-rw-r--r--board/nvidia/p2571/Makefile1
-rw-r--r--board/nvidia/p2571/max77620_init.c85
-rw-r--r--board/nvidia/p2571/max77620_init.h3
-rw-r--r--board/nvidia/p2571/p2571.c22
4 files changed, 24 insertions, 87 deletions
diff --git a/board/nvidia/p2571/Makefile b/board/nvidia/p2571/Makefile
index 223062e9a3..627b7efa2a 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 ed8d4dc5d7..0000000000
--- 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 9d5cce7c6e..92c3719112 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 fc710c1750..842242cf5c 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