diff options
Diffstat (limited to 'board/ti/am43xx/board.c')
| -rw-r--r-- | board/ti/am43xx/board.c | 48 |
1 files changed, 41 insertions, 7 deletions
diff --git a/board/ti/am43xx/board.c b/board/ti/am43xx/board.c index b635d691bfb..71af1ae7c89 100644 --- a/board/ti/am43xx/board.c +++ b/board/ti/am43xx/board.c @@ -19,6 +19,7 @@ #include <asm/arch/gpio.h> #include <asm/emif.h> #include "board.h" +#include <power/tps65218.h> #include <miiphy.h> #include <cpsw.h> @@ -254,13 +255,6 @@ void emif_get_ext_phy_ctrl_const_regs(const u32 **regs, u32 *size) const struct dpll_params *get_dpll_ddr_params(void) { - struct am43xx_board_id header; - - enable_i2c0_pin_mux(); - i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE); - if (read_eeprom(&header) < 0) - puts("Could not get board ID.\n"); - if (board_is_eposevm()) return &epos_evm_dpll_ddr; else if (board_is_gpevm()) @@ -338,6 +332,46 @@ const struct dpll_params *get_dpll_per_params(void) return &dpll_per[ind]; } +void scale_vcores(void) +{ + const struct dpll_params *mpu_params; + int mpu_vdd; + struct am43xx_board_id header; + + enable_i2c0_pin_mux(); + i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE); + if (read_eeprom(&header) < 0) + puts("Could not get board ID.\n"); + + /* Get the frequency */ + mpu_params = get_dpll_mpu_params(); + + if (i2c_probe(TPS65218_CHIP_PM)) + return; + + if (mpu_params->m == 1000) { + mpu_vdd = TPS65218_DCDC_VOLT_SEL_1330MV; + } else if (mpu_params->m == 600) { + mpu_vdd = TPS65218_DCDC_VOLT_SEL_1100MV; + } else { + puts("Unknown MPU clock, not scaling\n"); + return; + } + + /* Set DCDC1 (CORE) voltage to 1.1V */ + if (tps65218_voltage_update(TPS65218_DCDC1, + TPS65218_DCDC_VOLT_SEL_1100MV)) { + puts("tps65218_voltage_update failure\n"); + return; + } + + /* Set DCDC2 (MPU) voltage */ + if (tps65218_voltage_update(TPS65218_DCDC2, mpu_vdd)) { + puts("tps65218_voltage_update failure\n"); + return; + } +} + void set_uart_mux_conf(void) { enable_uart0_pin_mux(); |