[PATCH v2 0/4] soc: mediatek: svs: add support for mt8186 and

[PATCH v2 0/4] soc: mediatek: svs: add support for mt8186 and

[Tim Chang]

From: Jia-Wei Chang <jia-wei.chang@mediatek.com>

This series supports MT8186 and MT8195 Smart Voltage Scaling (SVS)
hardware which used as optimization of opp voltage table for
corresponding dvfs drivers.

This series is based on Roger's series [1].
[1]: Message ID: 20220516004311.18358-1-roger.lu@mediatek.com

Change since v2:
- Reuse platform probe of MT8192 for MT8195.
- Remove unnecessary svs bank parameters of MT8195.
- Remove sw id check for MT8195 efuse parsing.

Change since v1:
- Add myself as a co-maintainer of mtk-svs.yaml.
- Fix MT8186 error handling in platform probe.
- Add dt-bindings and support for MT8195 platform.

Jia-Wei Chang (4):
  dt-bindings: soc: mediatek: add mt8186 svs dt-bindings
  soc: mediatek: svs: add support for mt8186
  dt-bindings: soc: mediatek: add mt8195 svs dt-bindings
  soc: mediatek: svs: add support for mt8195

 .../bindings/soc/mediatek/mtk-svs.yaml        |   3 +
 drivers/soc/mediatek/mtk-svs.c                | 502 +++++++++++++++++-
 2 files changed, 498 insertions(+), 7 deletions(-)

-- 
2.18.0

[PATCH v3 1/4] dt-bindings: soc: mediatek: add mt8186 svs dt-bindings

[Tim Chang]

From: Jia-Wei Chang <jia-wei.chang@mediatek.com>

Add mt8186 svs compatible in dt-bindings and add myself as a
co-maintainer.

Signed-off-by: Jia-Wei Chang <jia-wei.chang@mediatek.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml b/Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml
index d911fa2d40ef..c86a5430641f 100644
--- a/Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml
+++ b/Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml
@@ -10,6 +10,7 @@ maintainers:
   - Roger Lu <roger.lu@mediatek.com>
   - Matthias Brugger <matthias.bgg@gmail.com>
   - Kevin Hilman <khilman@kernel.org>
+  - Jia-Wei Chang <jia-wei.chang@mediatek.com>
 
 description: |+
   The SVS engine is a piece of hardware which has several
@@ -22,6 +23,7 @@ properties:
   compatible:
     enum:
       - mediatek,mt8183-svs
+      - mediatek,mt8186-svs
       - mediatek,mt8192-svs
 
   reg:
-- 
2.18.0

Re: [PATCH v3 1/4] dt-bindings: soc: mediatek: add mt8186 svs dt-bindings

[Rob Herring]

On Mon, 23 May 2022 16:40:31 +0800, Tim Chang wrote:
> From: Jia-Wei Chang <jia-wei.chang@mediatek.com>
> 
> Add mt8186 svs compatible in dt-bindings and add myself as a
> co-maintainer.
> 
> Signed-off-by: Jia-Wei Chang <jia-wei.chang@mediatek.com>
> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> ---
>  Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml | 2 ++
>  1 file changed, 2 insertions(+)
> 

Acked-by: Rob Herring <robh@kernel.org>

[PATCH v3 2/4] soc: mediatek: svs: add support for mt8186

[Tim Chang]

From: Jia-Wei Chang <jia-wei.chang@mediatek.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@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.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

Re: [PATCH v3 2/4] soc: mediatek: svs: add support for mt8186

[AngeloGioacchino Del Regno]

Il 23/05/22 10:40, Tim Chang ha scritto:
> From: Jia-Wei Chang <jia-wei.chang@mediatek.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@mediatek.com>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.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

..snip..

> @@ -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,

I know I gave you my R-b tag earlier, but I've just noticed that: please remove
irqflags, as this kind of flags are specified in devicetree and it is not
necessary to specify them here.

Thanks,
Angelo

Re: [PATCH v3 2/4] soc: mediatek: svs: add support for mt8186

[Jia-Wei Chang]

On Mon, 2022-05-23 at 11:38 +0200, AngeloGioacchino Del Regno wrote:
> Il 23/05/22 10:40, Tim Chang ha scritto:
> > From: Jia-Wei Chang <jia-wei.chang@mediatek.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@mediatek.com>
> > Reviewed-by: AngeloGioacchino Del Regno <
> > angelogioacchino.delregno@collabora.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
> 
> ..snip..
> 
> > @@ -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,
> 
> I know I gave you my R-b tag earlier, but I've just noticed that:
> please remove
> irqflags, as this kind of flags are specified in devicetree and it is
> not
> necessary to specify them here.
> 
> Thanks,
> Angelo

Hi Angelo,

Sure, I will remove it in the next version.
Thanks.

[PATCH v3 3/4] dt-bindings: soc: mediatek: add mt8195 svs dt-bindings

[Tim Chang]

From: Jia-Wei Chang <jia-wei.chang@mediatek.com>

Add mt8195 svs compatible in dt-bindings.

Signed-off-by: Jia-Wei Chang <jia-wei.chang@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Rob Herring <robh@kernel.org>
---
 Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml b/Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml
index c86a5430641f..4bf26a333373 100644
--- a/Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml
+++ b/Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml
@@ -25,6 +25,7 @@ properties:
       - mediatek,mt8183-svs
       - mediatek,mt8186-svs
       - mediatek,mt8192-svs
+      - mediatek,mt8195-svs
 
   reg:
     maxItems: 1
-- 
2.18.0

[PATCH v3 4/4] soc: mediatek: svs: add support for mt8195

[Tim Chang]

From: Jia-Wei Chang <jia-wei.chang@mediatek.com>

To support svs on MT8195, add corresponding bank information, platform
data, probe and parsing function.

Signed-off-by: Jia-Wei Chang <jia-wei.chang@mediatek.com>
---
 drivers/soc/mediatek/mtk-svs.c | 151 +++++++++++++++++++++++++++++++++
 1 file changed, 151 insertions(+)

diff --git a/drivers/soc/mediatek/mtk-svs.c b/drivers/soc/mediatek/mtk-svs.c
index 656d0361ff7d..bb5021648143 100644
--- a/drivers/soc/mediatek/mtk-svs.c
+++ b/drivers/soc/mediatek/mtk-svs.c
@@ -1680,6 +1680,89 @@ static int svs_bank_resource_setup(struct svs_platform *svsp)
 	return 0;
 }
 
+static bool svs_mt8195_efuse_parsing(struct svs_platform *svsp)
+{
+	struct svs_bank *svsb;
+	struct nvmem_cell *cell;
+	u32 idx, i, ft_pgm, vmin, 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[10]) {
+		dev_notice(svsp->dev, "svs_efuse[10] = 0x0?\n");
+		return false;
+	}
+
+	/* Svs efuse parsing */
+	ft_pgm = svsp->efuse[0] & GENMASK(7, 0);
+	vmin = (svsp->efuse[19] >> 4) & GENMASK(1, 0);
+
+	for (idx = 0; idx < svsp->bank_max; idx++) {
+		svsb = &svsp->banks[idx];
+
+		if (vmin == 0x1)
+			svsb->vmin = 0x1e;
+
+		if (ft_pgm == 0)
+			svsb->volt_flags |= SVSB_INIT01_VOLT_IGNORE;
+
+		if (svsb->type == SVSB_LOW) {
+			svsb->mtdes = svsp->efuse[10] & GENMASK(7, 0);
+			svsb->bdes = (svsp->efuse[10] >> 16) & GENMASK(7, 0);
+			svsb->mdes = (svsp->efuse[10] >> 24) & GENMASK(7, 0);
+			svsb->dcbdet = (svsp->efuse[8]) & GENMASK(7, 0);
+			svsb->dcmdet = (svsp->efuse[8] >> 8) & GENMASK(7, 0);
+		} else if (svsb->type == SVSB_HIGH) {
+			svsb->mtdes = svsp->efuse[9] & GENMASK(7, 0);
+			svsb->bdes = (svsp->efuse[9] >> 16) & GENMASK(7, 0);
+			svsb->mdes = (svsp->efuse[9] >> 24) & GENMASK(7, 0);
+			svsb->dcbdet = (svsp->efuse[8]) & GENMASK(7, 0);
+			svsb->dcmdet = (svsp->efuse[8] >> 8) & GENMASK(7, 0);
+		}
+
+		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);
+
+	for (i = 0; i < svsp->tefuse_max; i++)
+		if (svsp->tefuse[i] != 0)
+			break;
+
+	if (i == svsp->tefuse_max)
+		golden_temp = 50; /* All thermal efuse data are 0 */
+	else
+		golden_temp = (svsp->tefuse[0] >> 24) & GENMASK(7, 0);
+
+	for (idx = 0; idx < svsp->bank_max; idx++) {
+		svsb = &svsp->banks[idx];
+		svsb->mts = 500;
+		svsb->bts = (((500 * golden_temp + 250460) / 1000) - 25) * 4;
+	}
+
+	return true;
+}
+
 static bool svs_mt8192_efuse_parsing(struct svs_platform *svsp)
 {
 	struct svs_bank *svsb;
@@ -2257,6 +2340,61 @@ static int svs_mt8183_platform_probe(struct svs_platform *svsp)
 	return 0;
 }
 
+static struct svs_bank svs_mt8195_banks[] = {
+	{
+		.sw_id			= SVSB_GPU,
+		.type			= SVSB_LOW,
+		.set_freq_pct		= svs_set_bank_freq_pct_v3,
+		.get_volts		= svs_get_bank_volts_v3,
+		.volt_flags		= SVSB_REMOVE_DVTFIXED_VOLT,
+		.mode_support		= SVSB_MODE_INIT02,
+		.opp_count		= MAX_OPP_ENTRIES,
+		.freq_base		= 640000000,
+		.turn_freq_base		= 640000000,
+		.volt_step		= 6250,
+		.volt_base		= 400000,
+		.vmax			= 0x38,
+		.vmin			= 0x14,
+		.age_config		= 0x555555,
+		.dc_config		= 0x1,
+		.dvt_fixed		= 0x1,
+		.vco			= 0x18,
+		.chk_shift		= 0x87,
+		.core_sel		= 0x0fff0100,
+		.int_st			= BIT(0),
+		.ctl0			= 0x00540003,
+	},
+	{
+		.sw_id			= SVSB_GPU,
+		.type			= SVSB_HIGH,
+		.set_freq_pct		= svs_set_bank_freq_pct_v3,
+		.get_volts		= svs_get_bank_volts_v3,
+		.tzone_name		= "gpu1",
+		.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		= 880000000,
+		.turn_freq_base		= 640000000,
+		.volt_step		= 6250,
+		.volt_base		= 400000,
+		.vmax			= 0x38,
+		.vmin			= 0x14,
+		.age_config		= 0x555555,
+		.dc_config		= 0x1,
+		.dvt_fixed		= 0x6,
+		.vco			= 0x18,
+		.chk_shift		= 0x87,
+		.core_sel		= 0x0fff0101,
+		.int_st			= BIT(1),
+		.ctl0			= 0x00540003,
+		.tzone_htemp		= 85000,
+		.tzone_htemp_voffset	= 0,
+		.tzone_ltemp		= 25000,
+		.tzone_ltemp_voffset	= 7,
+	},
+};
+
 static struct svs_bank svs_mt8192_banks[] = {
 	{
 		.sw_id			= SVSB_GPU,
@@ -2559,6 +2697,16 @@ static struct svs_bank svs_mt8183_banks[] = {
 	},
 };
 
+static const struct svs_platform_data svs_mt8195_platform_data = {
+	.name = "mt8195-svs",
+	.banks = svs_mt8195_banks,
+	.efuse_parsing = svs_mt8195_efuse_parsing,
+	.probe = svs_mt8192_platform_probe,
+	.irqflags = IRQF_TRIGGER_HIGH,
+	.regs = svs_regs_v2,
+	.bank_max = ARRAY_SIZE(svs_mt8195_banks),
+};
+
 static const struct svs_platform_data svs_mt8192_platform_data = {
 	.name = "mt8192-svs",
 	.banks = svs_mt8192_banks,
@@ -2591,6 +2739,9 @@ static const struct svs_platform_data svs_mt8183_platform_data = {
 
 static const struct of_device_id svs_of_match[] = {
 	{
+		.compatible = "mediatek,mt8195-svs",
+		.data = &svs_mt8195_platform_data,
+	}, {
 		.compatible = "mediatek,mt8192-svs",
 		.data = &svs_mt8192_platform_data,
 	}, {
-- 
2.18.0

Re: [PATCH v3 4/4] soc: mediatek: svs: add support for mt8195

[AngeloGioacchino Del Regno]

Il 23/05/22 10:40, Tim Chang ha scritto:
> From: Jia-Wei Chang <jia-wei.chang@mediatek.com>
> 
> To support svs on MT8195, add corresponding bank information, platform
> data, probe and parsing function.
> 
> Signed-off-by: Jia-Wei Chang <jia-wei.chang@mediatek.com>



> ---
>   drivers/soc/mediatek/mtk-svs.c | 151 +++++++++++++++++++++++++++++++++
>   1 file changed, 151 insertions(+)
> 
> diff --git a/drivers/soc/mediatek/mtk-svs.c b/drivers/soc/mediatek/mtk-svs.c
> index 656d0361ff7d..bb5021648143 100644
> --- a/drivers/soc/mediatek/mtk-svs.c
> +++ b/drivers/soc/mediatek/mtk-svs.c
> @@ -1680,6 +1680,89 @@ static int svs_bank_resource_setup(struct svs_platform *svsp)

..snip..

> @@ -2559,6 +2697,16 @@ static struct svs_bank svs_mt8183_banks[] = {
>   	},
>   };
>   
> +static const struct svs_platform_data svs_mt8195_platform_data = {
> +	.name = "mt8195-svs",
> +	.banks = svs_mt8195_banks,
> +	.efuse_parsing = svs_mt8195_efuse_parsing,
> +	.probe = svs_mt8192_platform_probe,
> +	.irqflags = IRQF_TRIGGER_HIGH,

Interrupt flags are specified in devicetree; avoid declaring irqflags.

After that:

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

Re: [PATCH v3 4/4] soc: mediatek: svs: add support for mt8195

[Jia-Wei Chang]

On Mon, 2022-05-23 at 11:38 +0200, AngeloGioacchino Del Regno wrote:
> Il 23/05/22 10:40, Tim Chang ha scritto:
> > From: Jia-Wei Chang <jia-wei.chang@mediatek.com>
> > 
> > To support svs on MT8195, add corresponding bank information,
> > platform
> > data, probe and parsing function.
> > 
> > Signed-off-by: Jia-Wei Chang <jia-wei.chang@mediatek.com>
> 
> 
> 
> > ---
> >   drivers/soc/mediatek/mtk-svs.c | 151
> > +++++++++++++++++++++++++++++++++
> >   1 file changed, 151 insertions(+)
> > 
> > diff --git a/drivers/soc/mediatek/mtk-svs.c
> > b/drivers/soc/mediatek/mtk-svs.c
> > index 656d0361ff7d..bb5021648143 100644
> > --- a/drivers/soc/mediatek/mtk-svs.c
> > +++ b/drivers/soc/mediatek/mtk-svs.c
> > @@ -1680,6 +1680,89 @@ static int svs_bank_resource_setup(struct
> > svs_platform *svsp)
> 
> ..snip..
> 
> > @@ -2559,6 +2697,16 @@ static struct svs_bank svs_mt8183_banks[] =
> > {
> >   	},
> >   };
> >   
> > +static const struct svs_platform_data svs_mt8195_platform_data = {
> > +	.name = "mt8195-svs",
> > +	.banks = svs_mt8195_banks,
> > +	.efuse_parsing = svs_mt8195_efuse_parsing,
> > +	.probe = svs_mt8192_platform_probe,
> > +	.irqflags = IRQF_TRIGGER_HIGH,
> 
> Interrupt flags are specified in devicetree; avoid declaring
> irqflags.
> 
> After that:
> 
> Reviewed-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno@collabora.com>
> 

Hi Angelo,

Sure, I will remove it in the next version.
Thanks.

Re: [PATCH v2 0/4] soc: mediatek: svs: add support for mt8186 and

[Jia-Wei Chang]

On Mon, 2022-05-23 at 16:40 +0800, Tim Chang wrote:

The Subject is for [Patch v3 0/4] rather than v2.
Sorry for my typo.

> From: Jia-Wei Chang <jia-wei.chang@mediatek.com>
> 
> This series supports MT8186 and MT8195 Smart Voltage Scaling (SVS)
> hardware which used as optimization of opp voltage table for
> corresponding dvfs drivers.
> 
> This series is based on Roger's series [1].
> [1]: Message ID: 20220516004311.18358-1-roger.lu@mediatek.com
> 
> Change since v2:
> - Reuse platform probe of MT8192 for MT8195.
> - Remove unnecessary svs bank parameters of MT8195.
> - Remove sw id check for MT8195 efuse parsing.
> 
> Change since v1:
> - Add myself as a co-maintainer of mtk-svs.yaml.
> - Fix MT8186 error handling in platform probe.
> - Add dt-bindings and support for MT8195 platform.
> 
> Jia-Wei Chang (4):
>   dt-bindings: soc: mediatek: add mt8186 svs dt-bindings
>   soc: mediatek: svs: add support for mt8186
>   dt-bindings: soc: mediatek: add mt8195 svs dt-bindings
>   soc: mediatek: svs: add support for mt8195
> 
>  .../bindings/soc/mediatek/mtk-svs.yaml        |   3 +
>  drivers/soc/mediatek/mtk-svs.c                | 502
> +++++++++++++++++-
>  2 files changed, 498 insertions(+), 7 deletions(-)
>