From 9ee02095fa1b5c532f758e287401423138687b56 Mon Sep 17 00:00:00 2001 From: Yidi Lin Date: Tue, 22 Sep 2020 19:56:20 +0800 Subject: mb/google/asurada: Implement board-specific regulator controls Currently, five regulator controls are implemented for DRAM calibration and DVFS feature. The regulators for VCORE and VM18 are controlled by MT6359. The reguatlors for VDD1, VDD2 and VMDDR are controlled by MT6360 via EC. BUG=b:147789962 BRANCH=none TEST=verified with DRAM driver Signed-off-by: Yidi Lin Change-Id: Id06a8196ca4badc51b06759afb07b5664278d13b Reviewed-on: https://review.coreboot.org/c/coreboot/+/46406 Tested-by: build bot (Jenkins) Reviewed-by: Yu-Ping Wu --- src/mainboard/google/asurada/Makefile.inc | 1 + src/mainboard/google/asurada/regulator.c | 92 +++++++++++++++++++++++++ src/soc/mediatek/common/include/soc/regulator.h | 1 + src/soc/mediatek/mt8192/include/soc/mt6360.h | 16 +++++ 4 files changed, 110 insertions(+) create mode 100644 src/mainboard/google/asurada/regulator.c create mode 100644 src/soc/mediatek/mt8192/include/soc/mt6360.h (limited to 'src') diff --git a/src/mainboard/google/asurada/Makefile.inc b/src/mainboard/google/asurada/Makefile.inc index 02fb8300e0..87582b7fbd 100644 --- a/src/mainboard/google/asurada/Makefile.inc +++ b/src/mainboard/google/asurada/Makefile.inc @@ -11,6 +11,7 @@ verstage-y += reset.c romstage-y += memlayout.ld romstage-y += boardid.c romstage-y += chromeos.c +romstage-y += regulator.c romstage-y += romstage.c romstage-y += sdram_configs.c diff --git a/src/mainboard/google/asurada/regulator.c b/src/mainboard/google/asurada/regulator.c new file mode 100644 index 0000000000..b06388dc66 --- /dev/null +++ b/src/mainboard/google/asurada/regulator.c @@ -0,0 +1,92 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include +#include +#include +#include +#include + +static int get_mt6360_regulator_id(enum mtk_regulator regulator) +{ + switch (regulator) { + case MTK_REGULATOR_VDD2: + return MT6360_BUCK1; + case MTK_REGULATOR_VDDQ: + return MT6360_LDO7; + case MTK_REGULATOR_VMDDR: + return MT6360_LDO6; + default: + break; + } + + return -1; +} + +static int get_mt6359p_regulator_id(enum mtk_regulator regulator) +{ + switch (regulator) { + case MTK_REGULATOR_VCORE: + return MT6359P_GPU11; + default: + break; + } + + return -1; +} + +void mainboard_set_regulator_vol(enum mtk_regulator regulator, + uint32_t voltage_uv) +{ + /* + * Handle the regulator that does not have a regulator ID + * in its underlying implementation. + */ + if (regulator == MTK_REGULATOR_VDD1) { + mt6359p_set_vm18_voltage(voltage_uv); + return; + } + + int id; + + id = get_mt6360_regulator_id(regulator); + if (id >= 0) { + uint32_t voltage_mv = voltage_uv / 1000; + google_chromeec_regulator_set_voltage(id, voltage_mv, voltage_mv); + return; + } + + id = get_mt6359p_regulator_id(regulator); + if (id >= 0) { + mt6359p_buck_set_voltage(id, voltage_uv); + return; + } + + printk(BIOS_WARNING, "Invalid regulator ID: %d\n", regulator); +} + +uint32_t mainboard_get_regulator_vol(enum mtk_regulator regulator) +{ + /* + * Handle the regulator that does not have a regulator ID + * in its underlying implementation. + */ + if (regulator == MTK_REGULATOR_VDD1) + return mt6359p_get_vm18_voltage(); + + int id; + + id = get_mt6360_regulator_id(regulator); + if (id >= 0) { + uint32_t voltage_mv = 0; + google_chromeec_regulator_get_voltage(id, &voltage_mv); + return voltage_mv * 1000; + } + + id = get_mt6359p_regulator_id(regulator); + if (id >= 0) + return mt6359p_buck_get_voltage(id); + + printk(BIOS_WARNING, "Invalid regulator ID: %d\n", regulator); + + return 0; +} diff --git a/src/soc/mediatek/common/include/soc/regulator.h b/src/soc/mediatek/common/include/soc/regulator.h index 258d5503f1..6d9ff4e301 100644 --- a/src/soc/mediatek/common/include/soc/regulator.h +++ b/src/soc/mediatek/common/include/soc/regulator.h @@ -10,6 +10,7 @@ enum mtk_regulator { MTK_REGULATOR_VDD2, MTK_REGULATOR_VDDQ, MTK_REGULATOR_VMDDR, + MTK_REGULATOR_VCORE, }; void mainboard_set_regulator_vol(enum mtk_regulator regulator, diff --git a/src/soc/mediatek/mt8192/include/soc/mt6360.h b/src/soc/mediatek/mt8192/include/soc/mt6360.h new file mode 100644 index 0000000000..a6ee76c08b --- /dev/null +++ b/src/soc/mediatek/mt8192/include/soc/mt6360.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef __SOC_MEDIATEK_MT6360_H__ +#define __SOC_MEDIATEK_MT6360_H__ + +enum mt6360_regulator_id { + MT6360_LDO3 = 0, + MT6360_LDO5, + MT6360_LDO6, + MT6360_LDO7, + MT6360_BUCK1, + MT6360_BUCK2, + MT6360_REGULATOR_COUNT, +}; + +#endif /* __SOC_MEDIATEK_MT6360_H__ */ -- cgit v1.2.3