Update voltages before programming plls.
Reviewed-by: Tom Rini trini@konsulko.com Signed-off-by: Lokesh Vutla lokeshvutla@ti.com --- board/ti/am335x/board.c | 267 +++++++++++++++++++++++++++--------------------- 1 file changed, 148 insertions(+), 119 deletions(-)
diff --git a/board/ti/am335x/board.c b/board/ti/am335x/board.c index 6786229680..45c96cecaa 100644 --- a/board/ti/am335x/board.c +++ b/board/ti/am335x/board.c @@ -264,155 +264,184 @@ const struct dpll_params dpll_ddr_evm_sk = { const struct dpll_params dpll_ddr_bone_black = { 400, OSC-1, 1, -1, -1, -1, -1};
-void am33xx_spl_board_init(void) +const struct dpll_params *get_dpll_ddr_params(void) { - int mpu_vdd; + if (board_is_evm_sk()) + return &dpll_ddr_evm_sk; + else if (board_is_bone_lt() || board_is_icev2()) + return &dpll_ddr_bone_black; + else if (board_is_evm_15_or_later()) + return &dpll_ddr_evm_sk; + else + return &dpll_ddr; +}
- /* Get the frequency */ - dpll_mpu_opp100.m = am335x_get_efuse_mpu_max_freq(cdev); +static void scale_vcores_bone(int freq) +{ + int usb_cur_lim, mpu_vdd;
- if (board_is_bone() || board_is_bone_lt()) { - /* BeagleBone PMIC Code */ - int usb_cur_lim; + /* + * Only perform PMIC configurations if board rev > A1 + * on Beaglebone White + */ + if (board_is_bone() && !strncmp(board_ti_get_rev(), "00A1", 4)) + return;
- /* - * Only perform PMIC configurations if board rev > A1 - * on Beaglebone White - */ - if (board_is_bone() && !strncmp(board_ti_get_rev(), "00A1", 4)) - return; + if (i2c_probe(TPS65217_CHIP_PM)) + return;
- if (i2c_probe(TPS65217_CHIP_PM)) + /* + * On Beaglebone White we need to ensure we have AC power + * before increasing the frequency. + */ + if (board_is_bone()) { + uchar pmic_status_reg; + if (tps65217_reg_read(TPS65217_STATUS, + &pmic_status_reg)) return; - - /* - * On Beaglebone White we need to ensure we have AC power - * before increasing the frequency. - */ - if (board_is_bone()) { - uchar pmic_status_reg; - if (tps65217_reg_read(TPS65217_STATUS, - &pmic_status_reg)) - return; - if (!(pmic_status_reg & TPS65217_PWR_SRC_AC_BITMASK)) { - puts("No AC power, disabling frequency switch\n"); - return; - } + if (!(pmic_status_reg & TPS65217_PWR_SRC_AC_BITMASK)) { + puts("No AC power, switching to default OPP\n"); + freq = MPUPLL_M_600; } + }
- /* - * Override what we have detected since we know if we have - * a Beaglebone Black it supports 1GHz. - */ - if (board_is_bone_lt()) - dpll_mpu_opp100.m = MPUPLL_M_1000; - - /* - * Increase USB current limit to 1300mA or 1800mA and set - * the MPU voltage controller as needed. - */ - if (dpll_mpu_opp100.m == MPUPLL_M_1000) { - usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1800MA; - mpu_vdd = TPS65217_DCDC_VOLT_SEL_1325MV; - } else { - usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1300MA; - mpu_vdd = TPS65217_DCDC_VOLT_SEL_1275MV; - } + /* + * Override what we have detected since we know if we have + * a Beaglebone Black it supports 1GHz. + */ + if (board_is_bone_lt()) + freq = MPUPLL_M_1000;
- if (tps65217_reg_write(TPS65217_PROT_LEVEL_NONE, - TPS65217_POWER_PATH, - usb_cur_lim, - TPS65217_USB_INPUT_CUR_LIMIT_MASK)) - puts("tps65217_reg_write failure\n"); + if (freq == MPUPLL_M_1000) { + usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1800MA; + mpu_vdd = TPS65217_DCDC_VOLT_SEL_1325MV; + } else { + usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1300MA; + mpu_vdd = TPS65217_DCDC_VOLT_SEL_1275MV; + }
- /* Set DCDC3 (CORE) voltage to 1.125V */ - if (tps65217_voltage_update(TPS65217_DEFDCDC3, - TPS65217_DCDC_VOLT_SEL_1125MV)) { - puts("tps65217_voltage_update failure\n"); - return; - } + switch (freq) { + case MPUPLL_M_1000: + mpu_vdd = TPS65217_DCDC_VOLT_SEL_1325MV; + usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1800MA; + break; + case MPUPLL_M_800: + mpu_vdd = TPS65217_DCDC_VOLT_SEL_1275MV; + usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1800MA; + break; + case MPUPLL_M_720: + mpu_vdd = TPS65217_DCDC_VOLT_SEL_1200MV; + usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1800MA; + break; + case MPUPLL_M_600: + case MPUPLL_M_500: + case MPUPLL_M_300: + mpu_vdd = TPS65217_DCDC_VOLT_SEL_1100MV; + usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1300MA; + break; + }
- /* Set CORE Frequencies to OPP100 */ - do_setup_dpll(&dpll_core_regs, &dpll_core_opp100); + if (tps65217_reg_write(TPS65217_PROT_LEVEL_NONE, + TPS65217_POWER_PATH, + usb_cur_lim, + TPS65217_USB_INPUT_CUR_LIMIT_MASK)) + puts("tps65217_reg_write failure\n");
- /* Set DCDC2 (MPU) voltage */ - if (tps65217_voltage_update(TPS65217_DEFDCDC2, mpu_vdd)) { - puts("tps65217_voltage_update failure\n"); - return; - } + /* Set DCDC3 (CORE) voltage to 1.10V */ + if (tps65217_voltage_update(TPS65217_DEFDCDC3, + TPS65217_DCDC_VOLT_SEL_1100MV)) { + puts("tps65217_voltage_update failure\n"); + return; + }
- /* - * Set LDO3, LDO4 output voltage to 3.3V for Beaglebone. - * Set LDO3 to 1.8V and LDO4 to 3.3V for Beaglebone Black. - */ - if (board_is_bone()) { - if (tps65217_reg_write(TPS65217_PROT_LEVEL_2, - TPS65217_DEFLS1, - TPS65217_LDO_VOLTAGE_OUT_3_3, - TPS65217_LDO_MASK)) - puts("tps65217_reg_write failure\n"); - } else { - if (tps65217_reg_write(TPS65217_PROT_LEVEL_2, - TPS65217_DEFLS1, - TPS65217_LDO_VOLTAGE_OUT_1_8, - TPS65217_LDO_MASK)) - puts("tps65217_reg_write failure\n"); - } + /* Set DCDC2 (MPU) voltage */ + if (tps65217_voltage_update(TPS65217_DEFDCDC2, mpu_vdd)) { + puts("tps65217_voltage_update failure\n"); + return; + }
+ /* + * Set LDO3, LDO4 output voltage to 3.3V for Beaglebone. + * Set LDO3 to 1.8V and LDO4 to 3.3V for Beaglebone Black. + */ + if (board_is_bone()) { if (tps65217_reg_write(TPS65217_PROT_LEVEL_2, - TPS65217_DEFLS2, + TPS65217_DEFLS1, TPS65217_LDO_VOLTAGE_OUT_3_3, TPS65217_LDO_MASK)) puts("tps65217_reg_write failure\n"); } else { - int sil_rev; + if (tps65217_reg_write(TPS65217_PROT_LEVEL_2, + TPS65217_DEFLS1, + TPS65217_LDO_VOLTAGE_OUT_1_8, + TPS65217_LDO_MASK)) + puts("tps65217_reg_write failure\n"); + }
- /* - * The GP EVM, IDK and EVM SK use a TPS65910 PMIC. For all - * MPU frequencies we support we use a CORE voltage of - * 1.1375V. For MPU voltage we need to switch based on - * the frequency we are running at. - */ - if (i2c_probe(TPS65910_CTRL_I2C_ADDR)) - return; + if (tps65217_reg_write(TPS65217_PROT_LEVEL_2, + TPS65217_DEFLS2, + TPS65217_LDO_VOLTAGE_OUT_3_3, + TPS65217_LDO_MASK)) + puts("tps65217_reg_write failure\n"); +}
- /* - * Depending on MPU clock and PG we will need a different - * VDD to drive at that speed. - */ - sil_rev = readl(&cdev->deviceid) >> 28; - mpu_vdd = am335x_get_tps65910_mpu_vdd(sil_rev, - dpll_mpu_opp100.m); +void scale_vcores_generic(int freq) +{ + int sil_rev, mpu_vdd;
- /* Tell the TPS65910 to use i2c */ - tps65910_set_i2c_control(); + /* + * The GP EVM, IDK and EVM SK use a TPS65910 PMIC. For all + * MPU frequencies we support we use a CORE voltage of + * 1.10V. For MPU voltage we need to switch based on + * the frequency we are running at. + */ + if (i2c_probe(TPS65910_CTRL_I2C_ADDR)) + return;
- /* First update MPU voltage. */ - if (tps65910_voltage_update(MPU, mpu_vdd)) - return; + /* + * Depending on MPU clock and PG we will need a different + * VDD to drive at that speed. + */ + sil_rev = readl(&cdev->deviceid) >> 28; + mpu_vdd = am335x_get_tps65910_mpu_vdd(sil_rev, freq);
- /* Second, update the CORE voltage. */ - if (tps65910_voltage_update(CORE, TPS65910_OP_REG_SEL_1_1_3)) - return; + /* Tell the TPS65910 to use i2c */ + tps65910_set_i2c_control();
- /* Set CORE Frequencies to OPP100 */ - do_setup_dpll(&dpll_core_regs, &dpll_core_opp100); - } + /* First update MPU voltage. */ + if (tps65910_voltage_update(MPU, mpu_vdd)) + return; + + /* Second, update the CORE voltage. */ + if (tps65910_voltage_update(CORE, TPS65910_OP_REG_SEL_1_1_0)) + return;
- /* Set MPU Frequency to what we detected now that voltages are set */ - do_setup_dpll(&dpll_mpu_regs, &dpll_mpu_opp100); }
-const struct dpll_params *get_dpll_ddr_params(void) +void gpi2c_init(void) { - if (board_is_evm_sk()) - return &dpll_ddr_evm_sk; - else if (board_is_bone_lt() || board_is_icev2()) - return &dpll_ddr_bone_black; - else if (board_is_evm_15_or_later()) - return &dpll_ddr_evm_sk; + /* When needed to be invoked prior to BSS initialization */ + static bool first_time = true; + + if (first_time) { + enable_i2c0_pin_mux(); + i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, + CONFIG_SYS_OMAP24_I2C_SLAVE); + first_time = false; + } +} + +void scale_vcores(void) +{ + int freq; + + gpi2c_init(); + freq = am335x_get_efuse_mpu_max_freq(cdev); + + if (board_is_bone()) + scale_vcores_bone(freq); else - return &dpll_ddr; + scale_vcores_generic(freq); }
void set_uart_mux_conf(void)