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authorRex-BC Chen <rex-bc.chen@mediatek.corp-partner.google.com>2021-10-28 17:17:14 +0800
committerHung-Te Lin <hungte@chromium.org>2021-11-15 03:07:48 +0000
commitdc4c2b95f405a27bf996af816501db1ed4db300e (patch)
tree3e602c639f87d5d0ff9aa674a589e024f10c1d35 /src/soc
parenta10bc29dd25dd57f7532e7a1826be43fb024159a (diff)
soc/mediatek/mt8186: Add support for regulator VMCH and VMC
Add support for VMCH and VMC of MT6366. TEST=measure voltage 3.3V for VMCH and VMC BUG=b:202871018 Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com> Change-Id: Id8d98b6d827abd4713ee5c216941a9621422c7eb Reviewed-on: https://review.coreboot.org/c/coreboot/+/59254 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Diffstat (limited to 'src/soc')
-rw-r--r--src/soc/mediatek/mt8186/include/soc/mt6366.h8
-rw-r--r--src/soc/mediatek/mt8186/mt6366.c116
2 files changed, 124 insertions, 0 deletions
diff --git a/src/soc/mediatek/mt8186/include/soc/mt6366.h b/src/soc/mediatek/mt8186/include/soc/mt6366.h
index fc6e09f419..76fcf5426f 100644
--- a/src/soc/mediatek/mt8186/include/soc/mt6366.h
+++ b/src/soc/mediatek/mt8186/include/soc/mt6366.h
@@ -37,7 +37,13 @@ enum {
PMIC_VDRAM1_VOSEL = 0x1626,
PMIC_SMPS_ANA_CON0 = 0x1808,
PMIC_VDDQ_OP_EN = 0x1b16,
+ PMIC_LDO_VMC_CON0 = 0x1cc4,
+ PMIC_LDO_VMC_OP_EN = 0x1cc6,
+ PMIC_LDO_VMCH_CON0 = 0x1cd8,
+ PMIC_LDO_VMCH_OP_EN = 0x1cda,
PMIC_VSIM2_ANA_CON0 = 0x1e30,
+ PMIC_VMCH_ANA_CON0 = 0x1e48,
+ PMIC_VMC_ANA_CON0 = 0x1e4c,
PMIC_VDDQ_ELR_0 = 0x1ec4,
};
@@ -45,6 +51,8 @@ enum mt6366_regulator_id {
MT6366_VCORE = 0,
MT6366_VDRAM1,
MT6366_VDDQ,
+ MT6366_VMCH,
+ MT6366_VMC,
MT6366_REGULATOR_NUM,
};
diff --git a/src/soc/mediatek/mt8186/mt6366.c b/src/soc/mediatek/mt8186/mt6366.c
index f9488bd4a9..e63a264884 100644
--- a/src/soc/mediatek/mt8186/mt6366.c
+++ b/src/soc/mediatek/mt8186/mt6366.c
@@ -560,6 +560,112 @@ static void pmic_set_vddq_vol(u32 vddq_uv)
udelay(1);
}
+static u32 pmic_get_vmch_vol(void)
+{
+ u32 vol_reg, ret;
+
+ vol_reg = pwrap_read_field(PMIC_VMCH_ANA_CON0, 0x7, 8);
+
+ switch (vol_reg) {
+ case 2:
+ ret = 2900000;
+ break;
+ case 3:
+ ret = 3000000;
+ break;
+ case 5:
+ ret = 3300000;
+ break;
+ default:
+ printk(BIOS_ERR, "ERROR[%s] VMCH read fail: %d\n", __func__, vol_reg);
+ ret = 0;
+ break;
+ }
+ return ret;
+}
+
+static void pmic_set_vmch_vol(u32 vmch_uv)
+{
+ u32 val = 0;
+
+ switch (vmch_uv) {
+ case 2900000:
+ val = 2;
+ break;
+ case 3000000:
+ val = 3;
+ break;
+ case 3300000:
+ val = 5;
+ break;
+ default:
+ die("ERROR[%s]: VMCH voltage %u is not support.\n", __func__, vmch_uv);
+ return;
+ }
+
+ pwrap_write_field(PMIC_VMCH_ANA_CON0, val, 0x7, 8);
+
+ /* Force SW to turn on */
+ pwrap_write_field(PMIC_LDO_VMCH_OP_EN, 1, 0xFF, 0);
+ pwrap_write_field(PMIC_LDO_VMCH_CON0, 1, 0xFF, 0);
+}
+
+static u32 pmic_get_vmc_vol(void)
+{
+ u32 vol_reg, ret;
+
+ vol_reg = pwrap_read_field(PMIC_VMC_ANA_CON0, 0xF, 8);
+
+ switch (vol_reg) {
+ case 0x4:
+ ret = 1800000;
+ break;
+ case 0xA:
+ ret = 2900000;
+ break;
+ case 0xB:
+ ret = 3000000;
+ break;
+ case 0xD:
+ ret = 3300000;
+ break;
+ default:
+ printk(BIOS_ERR, "ERROR[%s] VMC read fail: %d\n", __func__, vol_reg);
+ ret = 0;
+ break;
+ }
+ return ret;
+}
+
+static void pmic_set_vmc_vol(u32 vmc_uv)
+{
+ u32 val = 0;
+
+ switch (vmc_uv) {
+ case 1800000:
+ val = 0x4;
+ break;
+ case 2900000:
+ val = 0xA;
+ break;
+ case 3000000:
+ val = 0xB;
+ break;
+ case 3300000:
+ val = 0xD;
+ break;
+ default:
+ die("ERROR[%s]: VMC voltage %u is not support.\n", __func__, vmc_uv);
+ return;
+ }
+
+ pwrap_write_field(PMIC_VMC_ANA_CON0, val, 0xF, 8);
+
+ /* Force SW to turn on */
+ pwrap_write_field(PMIC_LDO_VMC_OP_EN, 1, 0xFF, 0);
+ pwrap_write_field(PMIC_LDO_VMC_CON0, 1, 0xFF, 0);
+}
+
static void pmic_wdt_set(void)
{
/* [5]=1, RG_WDTRSTB_DEB */
@@ -667,6 +773,12 @@ void mt6366_set_voltage(enum mt6366_regulator_id id, u32 voltage_uv)
case MT6366_VDDQ:
pmic_set_vddq_vol(voltage_uv);
break;
+ case MT6366_VMCH:
+ pmic_set_vmch_vol(voltage_uv);
+ break;
+ case MT6366_VMC:
+ pmic_set_vmc_vol(voltage_uv);
+ break;
default:
printk(BIOS_ERR, "%s: PMIC %d is not supported\n", __func__, id);
break;
@@ -682,6 +794,10 @@ u32 mt6366_get_voltage(enum mt6366_regulator_id id)
return pmic_get_vdram1_vol();
case MT6366_VDDQ:
return pmic_get_vddq_vol();
+ case MT6366_VMCH:
+ return pmic_get_vmch_vol();
+ case MT6366_VMC:
+ return pmic_get_vmc_vol();
default:
printk(BIOS_ERR, "%s: PMIC %d is not supported\n", __func__, id);
break;