[PATCH v2 2/3] soc: mediatek: svs: Add support for MT8186 SoC

From: Mark Tseng
Date: Thu Nov 16 2023 - 06:05:18 EST

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MT8186 svs has a number of banks which used as optimization of opp
voltage table for corresponding dvfs drivers.
MT8186 svs big core uses 2-line high bank and low bank to optimize the
voltage of opp table for higher and lower frequency respectively.

Signed-off-by: Mark Tseng <chun-jen.tseng@xxxxxxxxxxxx>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
---
drivers/soc/mediatek/mtk-svs.c | 282 +++++++++++++++++++++++++++++++++
1 file changed, 282 insertions(+)

diff --git a/drivers/soc/mediatek/mtk-svs.c b/drivers/soc/mediatek/mtk-svs.c
index 317c402e673a..0f7cfbe5630b 100644
--- a/drivers/soc/mediatek/mtk-svs.c
+++ b/drivers/soc/mediatek/mtk-svs.c
@@ -1986,6 +1986,89 @@ static bool svs_mt8188_efuse_parsing(struct svs_platform *svsp)
return true;
}

+static bool svs_mt8186_efuse_parsing(struct svs_platform *svsp)
+{
+ struct svs_bank *svsb;
+ u32 idx, i, golden_temp;
+ int ret;
+
+ for (i = 0; i < svsp->efuse_max; i++)
+ if (svsp->efuse[i])
+ dev_info(svsp->dev, "M_HW_RES%d: 0x%08x\n",
+ i, svsp->efuse[i]);
+
+ if (!svsp->efuse[0]) {
+ dev_notice(svsp->dev, "svs_efuse[0] = 0x0?\n");
+ return false;
+ }
+
+ /* Svs efuse parsing */
+ for (idx = 0; idx < svsp->bank_max; idx++) {
+ svsb = &svsp->banks[idx];
+
+ switch (svsb->sw_id) {
+ case SVSB_CPU_BIG:
+ if (svsb->type == SVSB_HIGH) {
+ svsb->mdes = (svsp->efuse[2] >> 24) & GENMASK(7, 0);
+ svsb->bdes = (svsp->efuse[2] >> 16) & GENMASK(7, 0);
+ svsb->mtdes = svsp->efuse[2] & GENMASK(7, 0);
+ svsb->dcmdet = (svsp->efuse[13] >> 8) & GENMASK(7, 0);
+ svsb->dcbdet = svsp->efuse[13] & GENMASK(7, 0);
+ } else if (svsb->type == SVSB_LOW) {
+ svsb->mdes = (svsp->efuse[3] >> 24) & GENMASK(7, 0);
+ svsb->bdes = (svsp->efuse[3] >> 16) & GENMASK(7, 0);
+ svsb->mtdes = svsp->efuse[3] & GENMASK(7, 0);
+ svsb->dcmdet = (svsp->efuse[14] >> 24) & GENMASK(7, 0);
+ svsb->dcbdet = (svsp->efuse[14] >> 16) & GENMASK(7, 0);
+ }
+ break;
+ case SVSB_CPU_LITTLE:
+ svsb->mdes = (svsp->efuse[4] >> 24) & GENMASK(7, 0);
+ svsb->bdes = (svsp->efuse[4] >> 16) & GENMASK(7, 0);
+ svsb->mtdes = svsp->efuse[4] & GENMASK(7, 0);
+ svsb->dcmdet = (svsp->efuse[14] >> 8) & GENMASK(7, 0);
+ svsb->dcbdet = svsp->efuse[14] & GENMASK(7, 0);
+ break;
+ case SVSB_CCI:
+ svsb->mdes = (svsp->efuse[5] >> 24) & GENMASK(7, 0);
+ svsb->bdes = (svsp->efuse[5] >> 16) & GENMASK(7, 0);
+ svsb->mtdes = svsp->efuse[5] & GENMASK(7, 0);
+ svsb->dcmdet = (svsp->efuse[15] >> 24) & GENMASK(7, 0);
+ svsb->dcbdet = (svsp->efuse[15] >> 16) & GENMASK(7, 0);
+ break;
+ case SVSB_GPU:
+ svsb->mdes = (svsp->efuse[6] >> 24) & GENMASK(7, 0);
+ svsb->bdes = (svsp->efuse[6] >> 16) & GENMASK(7, 0);
+ svsb->mtdes = svsp->efuse[6] & GENMASK(7, 0);
+ svsb->dcmdet = (svsp->efuse[15] >> 8) & GENMASK(7, 0);
+ svsb->dcbdet = svsp->efuse[15] & GENMASK(7, 0);
+ break;
+ default:
+ dev_err(svsb->dev, "unknown sw_id: %u\n", svsb->sw_id);
+ return false;
+ }
+
+ svsb->vmax += svsb->dvt_fixed;
+ }
+
+ ret = svs_get_efuse_data(svsp, "t-calibration-data",
+ &svsp->tefuse, &svsp->tefuse_max);
+ if (ret)
+ return false;
+
+ golden_temp = (svsp->tefuse[0] >> 24) & GENMASK(7, 0);
+ if (!golden_temp)
+ golden_temp = 50;
+
+ for (idx = 0; idx < svsp->bank_max; idx++) {
+ svsb = &svsp->banks[idx];
+ svsb->mts = 409;
+ svsb->bts = (((500 * golden_temp + 204650) / 1000) - 25) * 4;
+ }
+
+ return true;
+}
+
static bool svs_mt8183_efuse_parsing(struct svs_platform *svsp)
{
struct svs_bank *svsb;
@@ -2252,6 +2335,50 @@ static int svs_mt8192_platform_probe(struct svs_platform *svsp)
return 0;
}

+static int svs_mt8186_platform_probe(struct svs_platform *svsp)
+{
+ struct device *dev;
+ struct svs_bank *svsb;
+ u32 idx;
+
+ svsp->rst = devm_reset_control_get_optional(svsp->dev, "svs_rst");
+ if (IS_ERR(svsp->rst))
+ return dev_err_probe(svsp->dev, PTR_ERR(svsp->rst),
+ "cannot get svs reset control\n");
+
+ dev = svs_add_device_link(svsp, "lvts");
+ if (IS_ERR(dev))
+ return dev_err_probe(svsp->dev, PTR_ERR(dev),
+ "failed to get lvts device\n");
+
+ for (idx = 0; idx < svsp->bank_max; idx++) {
+ svsb = &svsp->banks[idx];
+
+ switch (svsb->sw_id) {
+ case SVSB_CPU_LITTLE:
+ case SVSB_CPU_BIG:
+ svsb->opp_dev = get_cpu_device(svsb->cpu_id);
+ break;
+ case SVSB_CCI:
+ svsb->opp_dev = svs_add_device_link(svsp, "cci");
+ break;
+ case SVSB_GPU:
+ svsb->opp_dev = svs_add_device_link(svsp, "gpu");
+ break;
+ default:
+ dev_err(svsb->dev, "unknown sw_id: %u\n", svsb->sw_id);
+ return -EINVAL;
+ }
+
+ if (IS_ERR(svsb->opp_dev))
+ return dev_err_probe(svsp->dev, PTR_ERR(svsb->opp_dev),
+ "failed to get OPP device for bank %d\n",
+ idx);
+ }
+
+ return 0;
+}
+
static int svs_mt8183_platform_probe(struct svs_platform *svsp)
{
struct device *dev;
@@ -2461,6 +2588,149 @@ static struct svs_bank svs_mt8188_banks[] = {
},
};

+static struct svs_bank svs_mt8186_banks[] = {
+ {
+ .sw_id = SVSB_CPU_BIG,
+ .type = SVSB_LOW,
+ .set_freq_pct = svs_set_bank_freq_pct_v3,
+ .get_volts = svs_get_bank_volts_v3,
+ .cpu_id = 6,
+ .volt_flags = SVSB_REMOVE_DVTFIXED_VOLT,
+ .mode_support = SVSB_MODE_INIT02,
+ .opp_count = MAX_OPP_ENTRIES,
+ .freq_base = 1670000000,
+ .turn_freq_base = 1670000000,
+ .volt_step = 6250,
+ .volt_base = 400000,
+ .volt_od = 4,
+ .vmax = 0x59,
+ .vmin = 0x20,
+ .age_config = 0x1,
+ .dc_config = 0x1,
+ .dvt_fixed = 0x3,
+ .vco = 0x10,
+ .chk_shift = 0x87,
+ .core_sel = 0x0fff0100,
+ .int_st = BIT(0),
+ .ctl0 = 0x00540003,
+ },
+ {
+ .sw_id = SVSB_CPU_BIG,
+ .type = SVSB_HIGH,
+ .set_freq_pct = svs_set_bank_freq_pct_v3,
+ .get_volts = svs_get_bank_volts_v3,
+ .cpu_id = 6,
+ .tzone_name = "cpu_big0",
+ .volt_flags = SVSB_REMOVE_DVTFIXED_VOLT |
+ SVSB_MON_VOLT_IGNORE,
+ .mode_support = SVSB_MODE_INIT02 | SVSB_MODE_MON,
+ .opp_count = MAX_OPP_ENTRIES,
+ .freq_base = 2050000000,
+ .turn_freq_base = 1670000000,
+ .volt_step = 6250,
+ .volt_base = 400000,
+ .volt_od = 4,
+ .vmax = 0x73,
+ .vmin = 0x20,
+ .age_config = 0x1,
+ .dc_config = 0x1,
+ .dvt_fixed = 0x6,
+ .vco = 0x10,
+ .chk_shift = 0x87,
+ .core_sel = 0x0fff0101,
+ .int_st = BIT(1),
+ .ctl0 = 0x00540003,
+ .tzone_htemp = 85000,
+ .tzone_htemp_voffset = 8,
+ .tzone_ltemp = 25000,
+ .tzone_ltemp_voffset = 8,
+ },
+ {
+ .sw_id = SVSB_CPU_LITTLE,
+ .set_freq_pct = svs_set_bank_freq_pct_v2,
+ .get_volts = svs_get_bank_volts_v2,
+ .cpu_id = 0,
+ .tzone_name = "cpu_zone0",
+ .volt_flags = SVSB_REMOVE_DVTFIXED_VOLT |
+ SVSB_MON_VOLT_IGNORE,
+ .mode_support = SVSB_MODE_INIT02 | SVSB_MODE_MON,
+ .opp_count = MAX_OPP_ENTRIES,
+ .freq_base = 2000000000,
+ .volt_step = 6250,
+ .volt_base = 400000,
+ .volt_od = 3,
+ .vmax = 0x65,
+ .vmin = 0x20,
+ .age_config = 0x1,
+ .dc_config = 0x1,
+ .dvt_fixed = 0x6,
+ .vco = 0x10,
+ .chk_shift = 0x87,
+ .core_sel = 0x0fff0102,
+ .int_st = BIT(2),
+ .ctl0 = 0x3210000f,
+ .tzone_htemp = 85000,
+ .tzone_htemp_voffset = 8,
+ .tzone_ltemp = 25000,
+ .tzone_ltemp_voffset = 8,
+ },
+ {
+ .sw_id = SVSB_CCI,
+ .set_freq_pct = svs_set_bank_freq_pct_v2,
+ .get_volts = svs_get_bank_volts_v2,
+ .tzone_name = "cpu_zone0",
+ .volt_flags = SVSB_REMOVE_DVTFIXED_VOLT |
+ SVSB_MON_VOLT_IGNORE,
+ .mode_support = SVSB_MODE_INIT02 | SVSB_MODE_MON,
+ .opp_count = MAX_OPP_ENTRIES,
+ .freq_base = 1400000000,
+ .volt_step = 6250,
+ .volt_base = 400000,
+ .volt_od = 3,
+ .vmax = 0x65,
+ .vmin = 0x20,
+ .age_config = 0x1,
+ .dc_config = 0x1,
+ .dvt_fixed = 0x6,
+ .vco = 0x10,
+ .chk_shift = 0x87,
+ .core_sel = 0x0fff0103,
+ .int_st = BIT(3),
+ .ctl0 = 0x3210000f,
+ .tzone_htemp = 85000,
+ .tzone_htemp_voffset = 8,
+ .tzone_ltemp = 25000,
+ .tzone_ltemp_voffset = 8,
+ },
+ {
+ .sw_id = SVSB_GPU,
+ .set_freq_pct = svs_set_bank_freq_pct_v2,
+ .get_volts = svs_get_bank_volts_v2,
+ .tzone_name = "mfg",
+ .volt_flags = SVSB_REMOVE_DVTFIXED_VOLT |
+ SVSB_MON_VOLT_IGNORE,
+ .mode_support = SVSB_MODE_INIT02 | SVSB_MODE_MON,
+ .opp_count = MAX_OPP_ENTRIES,
+ .freq_base = 850000000,
+ .volt_step = 6250,
+ .volt_base = 400000,
+ .vmax = 0x58,
+ .vmin = 0x20,
+ .age_config = 0x555555,
+ .dc_config = 0x1,
+ .dvt_fixed = 0x4,
+ .vco = 0x10,
+ .chk_shift = 0x87,
+ .core_sel = 0x0fff0104,
+ .int_st = BIT(4),
+ .ctl0 = 0x00100003,
+ .tzone_htemp = 85000,
+ .tzone_htemp_voffset = 8,
+ .tzone_ltemp = 25000,
+ .tzone_ltemp_voffset = 7,
+ },
+};
+
static struct svs_bank svs_mt8183_banks[] = {
{
.sw_id = SVSB_CPU_LITTLE,
@@ -2592,6 +2862,15 @@ static const struct svs_platform_data svs_mt8188_platform_data = {
.bank_max = ARRAY_SIZE(svs_mt8188_banks),
};

+static const struct svs_platform_data svs_mt8186_platform_data = {
+ .name = "mt8186-svs",
+ .banks = svs_mt8186_banks,
+ .efuse_parsing = svs_mt8186_efuse_parsing,
+ .probe = svs_mt8186_platform_probe,
+ .regs = svs_regs_v2,
+ .bank_max = ARRAY_SIZE(svs_mt8186_banks),
+};
+
static const struct svs_platform_data svs_mt8183_platform_data = {
.name = "mt8183-svs",
.banks = svs_mt8183_banks,
@@ -2611,6 +2890,9 @@ static const struct of_device_id svs_of_match[] = {
}, {
.compatible = "mediatek,mt8188-svs",
.data = &svs_mt8188_platform_data,
+ }, {
+ .compatible = "mediatek,mt8186-svs",
+ .data = &svs_mt8186_platform_data,
}, {
.compatible = "mediatek,mt8183-svs",
.data = &svs_mt8183_platform_data,
--
2.18.0

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