diff options
Diffstat (limited to 'board/nvidia/p2571/max77620_init.c')
| -rw-r--r-- | board/nvidia/p2571/max77620_init.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/board/nvidia/p2571/max77620_init.c b/board/nvidia/p2571/max77620_init.c new file mode 100644 index 0000000..ed8d4dc --- /dev/null +++ b/board/nvidia/p2571/max77620_init.c @@ -0,0 +1,85 @@ +/* + * (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, ®->cmd_addr0); + writel(config, ®->cnfg); +} + +void tegra_i2c_ll_write_data(uint data, uint config) +{ + struct i2c_ctlr *reg = (struct i2c_ctlr *)TEGRA_DVC_BASE; + + writel(data, ®->cmd_data1); + writel(config, ®->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); +} |