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Message-ID: <20220523084034.26802-3-jia-wei.chang@mediatek.com>
Date: Mon, 23 May 2022 16:40:32 +0800
From: Tim Chang <jia-wei.chang@...iatek.com>
To: Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Matthias Brugger <matthias.bgg@...il.com>,
Philipp Zabel <p.zabel@...gutronix.de>,
Roger Lu <roger.lu@...iatek.com>,
Kevin Hilman <khilman@...nel.org>,
Jia-Wei Chang <jia-wei.chang@...iatek.com>
CC: <devicetree@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-mediatek@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>,
<Project_Global_Chrome_Upstream_Group@...iatek.com>,
<hsinyi@...gle.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>
Subject: [PATCH v3 2/4] soc: mediatek: svs: add support for mt8186
From: Jia-Wei Chang <jia-wei.chang@...iatek.com>
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: Jia-Wei Chang <jia-wei.chang@...iatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
---
drivers/soc/mediatek/mtk-svs.c | 351 ++++++++++++++++++++++++++++++++-
1 file changed, 344 insertions(+), 7 deletions(-)
diff --git a/drivers/soc/mediatek/mtk-svs.c b/drivers/soc/mediatek/mtk-svs.c
index 606a00a2e57d..656d0361ff7d 100644
--- a/drivers/soc/mediatek/mtk-svs.c
+++ b/drivers/soc/mediatek/mtk-svs.c
@@ -355,6 +355,7 @@ struct svs_platform_data {
* @dcbdet: svs efuse data
* @dcmdet: svs efuse data
* @turn_pt: 2-line turn point tells which opp_volt calculated by high/low bank
+ * @vbin_turn_pt: voltage bin turn point helps know which svsb_volt should be overridden
* @type: bank type to represent it is 2-line (high/low) bank or 1-line bank
*
* Svs bank will generate suitalbe voltages by below general math equation
@@ -417,6 +418,7 @@ struct svs_bank {
u32 dcbdet;
u32 dcmdet;
u32 turn_pt;
+ u32 vbin_turn_pt;
u32 type;
};
@@ -692,11 +694,12 @@ static int svs_status_debug_show(struct seq_file *m, void *v)
ret = thermal_zone_get_temp(svsb->tzd, &tzone_temp);
if (ret)
- seq_printf(m, "%s: temperature ignore, turn_pt = %u\n",
- svsb->name, svsb->turn_pt);
+ seq_printf(m, "%s: temperature ignore, vbin_turn_pt = %u, turn_pt = %u\n",
+ svsb->name, svsb->vbin_turn_pt, svsb->turn_pt);
else
- seq_printf(m, "%s: temperature = %d, turn_pt = %u\n",
- svsb->name, tzone_temp, svsb->turn_pt);
+ seq_printf(m, "%s: temperature = %d, vbin_turn_pt = %u, turn_pt = %u\n",
+ svsb->name, tzone_temp, svsb->vbin_turn_pt,
+ svsb->turn_pt);
for (i = 0; i < svsb->opp_count; i++) {
opp = dev_pm_opp_find_freq_exact(svsb->opp_dev,
@@ -889,9 +892,11 @@ static void svs_get_bank_volts_v3(struct svs_platform *svsp)
opp_stop = svsb->opp_count;
}
- for (i = opp_start; i < opp_stop; i++)
+ for (i = opp_start; i < opp_stop; i++) {
if (svsb->volt_flags & SVSB_REMOVE_DVTFIXED_VOLT)
svsb->volt[i] -= svsb->dvt_fixed;
+ svsb->volt[i] += svsb->volt_od;
+ }
}
static void svs_set_bank_freq_pct_v3(struct svs_platform *svsp)
@@ -982,6 +987,10 @@ static void svs_get_bank_volts_v2(struct svs_platform *svsp)
struct svs_bank *svsb = svsp->pbank;
u32 temp, i;
+ if (svsb->phase == SVSB_PHASE_MON &&
+ svsb->volt_flags & SVSB_MON_VOLT_IGNORE)
+ return;
+
temp = svs_readl_relaxed(svsp, VOP74);
svsb->volt[14] = (temp >> 24) & GENMASK(7, 0);
svsb->volt[12] = (temp >> 16) & GENMASK(7, 0);
@@ -1007,8 +1016,34 @@ static void svs_get_bank_volts_v2(struct svs_platform *svsp)
svsb->volt[14],
svsb->freq_pct[15]);
- for (i = 0; i < svsb->opp_count; i++)
+ for (i = 0; i < svsb->opp_count; i++) {
+ if (svsb->volt_flags & SVSB_REMOVE_DVTFIXED_VOLT)
+ svsb->volt[i] -= svsb->dvt_fixed;
svsb->volt[i] += svsb->volt_od;
+ }
+
+ /* For voltage bin support */
+ if (svsb->opp_dfreq[0] > svsb->freq_base) {
+ svsb->volt[0] = svs_opp_volt_to_bank_volt(svsb->opp_dvolt[0],
+ svsb->volt_step,
+ svsb->volt_base);
+
+ /* Find voltage bin turn point */
+ for (i = 0; i < svsb->opp_count; i++) {
+ if (svsb->opp_dfreq[i] <= svsb->freq_base) {
+ svsb->vbin_turn_pt = i;
+ break;
+ }
+ }
+
+ /* Override svs bank voltages */
+ for (i = 1; i < svsb->vbin_turn_pt; i++)
+ svsb->volt[i] = interpolate(svsb->freq_pct[0],
+ svsb->freq_pct[svsb->vbin_turn_pt],
+ svsb->volt[0],
+ svsb->volt[svsb->vbin_turn_pt],
+ svsb->freq_pct[i]);
+ }
}
static void svs_set_bank_freq_pct_v2(struct svs_platform *svsp)
@@ -1556,7 +1591,12 @@ static int svs_bank_resource_setup(struct svs_platform *svsp)
svsb->name = "SVSB_CPU_LITTLE";
break;
case SVSB_CPU_BIG:
- svsb->name = "SVSB_CPU_BIG";
+ if (svsb->type == SVSB_HIGH)
+ svsb->name = "SVSB_CPU_BIG_HIGH";
+ else if (svsb->type == SVSB_LOW)
+ svsb->name = "SVSB_CPU_BIG_LOW";
+ else
+ svsb->name = "SVSB_CPU_BIG";
break;
case SVSB_CCI:
svsb->name = "SVSB_CCI";
@@ -1719,6 +1759,103 @@ static bool svs_mt8192_efuse_parsing(struct svs_platform *svsp)
return true;
}
+static bool svs_mt8186_efuse_parsing(struct svs_platform *svsp)
+{
+ struct svs_bank *svsb;
+ struct nvmem_cell *cell;
+ u32 idx, i, golden_temp;
+
+ 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;
+ }
+
+ /* Thermal efuse parsing */
+ cell = nvmem_cell_get(svsp->dev, "t-calibration-data");
+ if (IS_ERR_OR_NULL(cell)) {
+ dev_err(svsp->dev, "no \"t-calibration-data\"? %ld\n",
+ PTR_ERR(cell));
+ return false;
+ }
+
+ svsp->tefuse = nvmem_cell_read(cell, &svsp->tefuse_max);
+ if (IS_ERR(svsp->tefuse)) {
+ dev_err(svsp->dev, "cannot read thermal efuse: %ld\n",
+ PTR_ERR(svsp->tefuse));
+ nvmem_cell_put(cell);
+ return false;
+ }
+
+ svsp->tefuse_max /= sizeof(u32);
+ nvmem_cell_put(cell);
+
+ 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;
@@ -2037,6 +2174,50 @@ 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, "mali");
+ 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;
@@ -2131,6 +2312,149 @@ static struct svs_bank svs_mt8192_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,
@@ -2245,6 +2569,16 @@ static const struct svs_platform_data svs_mt8192_platform_data = {
.bank_max = ARRAY_SIZE(svs_mt8192_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,
+ .irqflags = IRQF_TRIGGER_HIGH,
+ .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,
@@ -2259,6 +2593,9 @@ static const struct of_device_id svs_of_match[] = {
{
.compatible = "mediatek,mt8192-svs",
.data = &svs_mt8192_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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