diff options
Diffstat (limited to 'board/nvidia/venice2/as3722_init.c')
| -rw-r--r-- | board/nvidia/venice2/as3722_init.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/board/nvidia/venice2/as3722_init.c b/board/nvidia/venice2/as3722_init.c new file mode 100644 index 0000000000..960fea7ee7 --- /dev/null +++ b/board/nvidia/venice2/as3722_init.c @@ -0,0 +1,91 @@ +/* + * (C) Copyright 2013 + * 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 "as3722_init.h" + +/* AS3722-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) +{ + debug("%s entry\n", __func__); + + /* Don't need to set up VDD_CORE - already done - by OTP */ + + debug("%s: Setting VDD_CPU to 1.0V via AS3722 reg 0/4D\n", __func__); + /* + * Bring up VDD_CPU via the AS3722 PMIC on the PWR I2C bus. + * First set VDD to 1.0V, then enable the VDD regulator. + */ + tegra_i2c_ll_write_addr(AS3722_I2C_ADDR, 2); + tegra_i2c_ll_write_data(AS3722_SD0VOLTAGE_DATA, I2C_SEND_2_BYTES); + /* + * Don't write SDCONTROL - it's already 0x7F, i.e. all SDs enabled. + * tegra_i2c_ll_write_data(AS3722_SD0CONTROL_DATA, I2C_SEND_2_BYTES); + */ + udelay(10 * 1000); + + debug("%s: Setting VDD_GPU to 1.0V via AS3722 reg 6/4D\n", __func__); + /* + * Bring up VDD_GPU via the AS3722 PMIC on the PWR I2C bus. + * First set VDD to 1.0V, then enable the VDD regulator. + */ + tegra_i2c_ll_write_addr(AS3722_I2C_ADDR, 2); + tegra_i2c_ll_write_data(AS3722_SD6VOLTAGE_DATA, I2C_SEND_2_BYTES); + /* + * Don't write SDCONTROL - it's already 0x7F, i.e. all SDs enabled. + * tegra_i2c_ll_write_data(AS3722_SD6CONTROL_DATA, I2C_SEND_2_BYTES); + */ + udelay(10 * 1000); + + debug("%s: Set VPP_FUSE to 1.2V via AS3722 reg 0x12/4E\n", __func__); + /* + * Bring up VPP_FUSE via the AS3722 PMIC on the PWR I2C bus. + * First set VDD to 1.2V, then enable the VDD regulator. + */ + tegra_i2c_ll_write_addr(AS3722_I2C_ADDR, 2); + tegra_i2c_ll_write_data(AS3722_LDO2VOLTAGE_DATA, I2C_SEND_2_BYTES); + /* + * Don't write LDCONTROL - it's already 0xFF, i.e. all LDOs enabled. + * tegra_i2c_ll_write_data(AS3722_LDO2CONTROL_DATA, I2C_SEND_2_BYTES); + */ + udelay(10 * 1000); + + debug("%s: Set VDD_SDMMC to 3.3V via AS3722 reg 0x16/4E\n", __func__); + /* + * Bring up VDD_SDMMC via the AS3722 PMIC on the PWR I2C bus. + * First set it to bypass 3.3V straight thru, then enable the regulator + * + * NOTE: We do this early because doing it later seems to hose the CPU + * power rail/partition startup. Need to debug. + */ + tegra_i2c_ll_write_addr(AS3722_I2C_ADDR, 2); + tegra_i2c_ll_write_data(AS3722_LDO6VOLTAGE_DATA, I2C_SEND_2_BYTES); + /* + * Don't write LDCONTROL - it's already 0xFF, i.e. all LDOs enabled. + * tegra_i2c_ll_write_data(AS3722_LDO6CONTROL_DATA, I2C_SEND_2_BYTES); + */ + udelay(10 * 1000); +} |
