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Change in coreboot[master]: soc/mediatek/mt8186: Add support for regulator VRF12/VCN33
by Hung-Te Lin (Code Review) Dec. 31, 2021

Dec. 31, 2021

Hung-Te Lin has submitted this change. ( https://review.coreboot.org/c/coreboot/+/60446 ) Change subject: soc/mediatek/mt8186: Add support for regulator VRF12/VCN33 ...................................................................... soc/mediatek/mt8186: Add support for regulator VRF12/VCN33 To provide power to PS8640, the eDP bridge IC on krabby, add control of VRF12 and VCN33 to set voltage from MT6366. TEST=measure 1.2V from VRF12 and 3.3V from VCN33. BUG=b:210806060 Signed-off-by: Rex-BC Chen <rex-bc.chen(a)mediatek.com> Change-Id: I55a9ca16e1e335e9355d0a1b30c278a9969db197 Reviewed-on: https://review.coreboot.org/c/coreboot/+/60446 Tested-by: build bot (Jenkins) <no-reply(a)coreboot.org> Reviewed-by: Yu-Ping Wu <yupingso(a)google.com> --- M src/mainboard/google/corsola/regulator.c M src/soc/mediatek/common/include/soc/regulator.h M src/soc/mediatek/mt8186/include/soc/mt6366.h M src/soc/mediatek/mt8186/mt6366.c 4 files changed, 83 insertions(+), 0 deletions(-) Approvals: build bot (Jenkins): Verified Yu-Ping Wu: Looks good to me, approved Rex-BC Chen: Looks good to me, but someone else must approve diff --git a/src/mainboard/google/corsola/regulator.c b/src/mainboard/google/corsola/regulator.c index 1dd26d3..d607497 100644 --- a/src/mainboard/google/corsola/regulator.c +++ b/src/mainboard/google/corsola/regulator.c @@ -20,6 +20,8 @@ [MTK_REGULATOR_VMC] = MT6366_VMC, [MTK_REGULATOR_VPROC12] = MT6366_VPROC12, [MTK_REGULATOR_VSRAM_PROC12] = MT6366_VSRAM_PROC12, + [MTK_REGULATOR_VRF12] = MT6366_VRF12, + [MTK_REGULATOR_VCN33] = MT6366_VCN33, }; _Static_assert(ARRAY_SIZE(regulator_id) == MTK_REGULATOR_NUM, "regulator_id size error"); diff --git a/src/soc/mediatek/common/include/soc/regulator.h b/src/soc/mediatek/common/include/soc/regulator.h index 5068f50..84bb364 100644 --- a/src/soc/mediatek/common/include/soc/regulator.h +++ b/src/soc/mediatek/common/include/soc/regulator.h @@ -18,6 +18,8 @@ MTK_REGULATOR_VMC, MTK_REGULATOR_VPROC12, MTK_REGULATOR_VSRAM_PROC12, + MTK_REGULATOR_VRF12, + MTK_REGULATOR_VCN33, MTK_REGULATOR_NUM, }; diff --git a/src/soc/mediatek/mt8186/include/soc/mt6366.h b/src/soc/mediatek/mt8186/include/soc/mt6366.h index af77da2..2315a24 100644 --- a/src/soc/mediatek/mt8186/include/soc/mt6366.h +++ b/src/soc/mediatek/mt8186/include/soc/mt6366.h @@ -43,10 +43,14 @@ PMIC_VSRAM_PROC12_OP_EN = 0x1b90, PMIC_VSRAM_PROC12_DBG0 = 0x1ba2, PMIC_VSRAM_PROC12_VOSEL = 0x1bf0, + PMIC_LDO_VRF12_CON0 = 0x1c30, + PMIC_LDO_VRF12_OP_EN = 0x1c32, PMIC_LDO_VMC_CON0 = 0x1cc4, PMIC_LDO_VMC_OP_EN = 0x1cc6, PMIC_LDO_VMCH_CON0 = 0x1cd8, PMIC_LDO_VMCH_OP_EN = 0x1cda, + PMIC_LDO_VCN33_CON0_0 = 0x1d1c, + PMIC_VCN33_ANA_CON0 = 0x1e28, PMIC_VSIM2_ANA_CON0 = 0x1e30, PMIC_VMCH_ANA_CON0 = 0x1e48, PMIC_VMC_ANA_CON0 = 0x1e4c, @@ -61,6 +65,8 @@ MT6366_VMC, MT6366_VPROC12, MT6366_VSRAM_PROC12, + MT6366_VRF12, + MT6366_VCN33, MT6366_REGULATOR_NUM, }; diff --git a/src/soc/mediatek/mt8186/mt6366.c b/src/soc/mediatek/mt8186/mt6366.c index 5cec47a..9ca7c05 100644 --- a/src/soc/mediatek/mt8186/mt6366.c +++ b/src/soc/mediatek/mt8186/mt6366.c @@ -705,6 +705,68 @@ pwrap_write_field(PMIC_LDO_VMC_CON0, 1, 0xFF, 0); } +static u32 pmic_get_vrf12_vol(void) +{ + return (pwrap_read_field(PMIC_LDO_VRF12_CON0, 0x3, 0) & + pwrap_read_field(PMIC_LDO_VRF12_OP_EN, 0x3, 0)) ? 1200000 : 0; +} + +static void pmic_enable_vrf12(void) +{ + pwrap_write_field(PMIC_LDO_VRF12_CON0, 1, 0x3, 0); + pwrap_write_field(PMIC_LDO_VRF12_OP_EN, 1, 0x3, 0); +} + +static u32 pmic_get_vcn33_vol(void) +{ + u32 ret; + u16 vol_reg; + + vol_reg = pwrap_read_field(PMIC_VCN33_ANA_CON0, 0x3, 8); + + switch (vol_reg) { + case 0x1: + ret = 3300000; + break; + case 0x2: + ret = 3400000; + break; + case 0x3: + ret = 3500000; + break; + default: + printk(BIOS_ERR, "ERROR[%s] VCN33 read fail: %d\n", __func__, vol_reg); + ret = 0; + break; + } + return ret; +} + +static void pmic_set_vcn33_vol(u32 vcn33_uv) +{ + u16 val = 0; + + switch (vcn33_uv) { + case 3300000: + val = 0x1; + break; + case 3400000: + val = 0x2; + break; + case 3500000: + val = 0x3; + break; + default: + die("ERROR[%s]: VCN33 voltage %u is not support.\n", __func__, vcn33_uv); + return; + } + + pwrap_write_field(PMIC_VCN33_ANA_CON0, val, 0x3, 8); + + /* Force SW to turn on */ + pwrap_write_field(PMIC_LDO_VCN33_CON0_0, 1, 0x1, 0); +} + static void pmic_wdt_set(void) { /* [5]=1, RG_WDTRSTB_DEB */ @@ -824,6 +886,13 @@ case MT6366_VSRAM_PROC12: pmic_set_vsram_proc12_vol(voltage_uv); break; + case MT6366_VRF12: + /* VRF12 only provides 1.2V, so we just need to enable it */ + pmic_enable_vrf12(); + break; + case MT6366_VCN33: + pmic_set_vcn33_vol(voltage_uv); + break; default: printk(BIOS_ERR, "%s: PMIC %d is not supported\n", __func__, id); break; @@ -847,6 +916,10 @@ return pmic_get_vproc12_vol(); case MT6366_VSRAM_PROC12: return pmic_get_vsram_proc12_vol(); + case MT6366_VRF12: + return pmic_get_vrf12_vol(); + case MT6366_VCN33: + return pmic_get_vcn33_vol(); default: printk(BIOS_ERR, "%s: PMIC %d is not supported\n", __func__, id); break; 1 is the latest approved patch-set. No files were changed between the latest approved patch-set and the submitted one. -- To view, visit https://review.coreboot.org/c/coreboot/+/60446 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: I55a9ca16e1e335e9355d0a1b30c278a9969db197 Gerrit-Change-Number: 60446 Gerrit-PatchSet: 3 Gerrit-Owner: Rex-BC Chen <rex-bc.chen(a)mediatek.com> Gerrit-Reviewer: Hung-Te Lin <hungte(a)chromium.org> Gerrit-Reviewer: Rex-BC Chen <rex-bc.chen(a)mediatek.com> Gerrit-Reviewer: Yu-Ping Wu <yupingso(a)google.com> Gerrit-Reviewer: build bot (Jenkins) <no-reply(a)coreboot.org> Gerrit-MessageType: merged

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