[PATCH v3 00/18] Enable GPU with DVFS support on MediaTek SoCs

[PATCH v3 00/18] Enable GPU with DVFS support on MediaTek SoCs

[AngeloGioacchino Del Regno]

Changes in v3:
 - Changed MT8186 compatibles for new bindings
 - Added min/max voltage overrides for vgpu/vsram_gpu on
   mt8183-pumpkin and evb as suggested by Chen-Yu
 - Cosmetic fixes for "arm64: dts: mediatek: mt8192: Add GPU nodes"

Changes in v2:
 - Changed MT8186 to use only two power domains for the GPU.

We finally have working GPU DVFS on MediaTek SoCs.
On Panfrost.
For real.
...and the best part is that it's going upstream.

In order to get GPU DVFS working, it was necessary to satisfy a
specific constraint (which is different, depending on the SoC)
between two regulators: GPU VCORE and GPU SRAM.
This was done through adding the mtk-regulator-coupler driver,
which transparently manages the voltage relation between these
two vregs, hence completely eliminating the need to manage these
regulators in the Panfrost driver; this solves the long standing
issue with devfreq+opp tables not supporting managing voltages
for two regulators per opp entry out of the box, due to which
we never got GPU DVFS on those SoCs, often locking them out to
a low GPU frequency.

This changes. Right now!

Tested on MT8192, MT8195 Chromebooks.

This series depends on [1].

[1]: https://lore.kernel.org/lkml/20230228102704.708150-1-angelogioacchino.delregno@collabora.com/

Alyssa Rosenzweig (2):
  arm64: dts: mediatek: mt8192: Add GPU nodes
  arm64: dts: mediatek: mt8192-asurada: Enable GPU

AngeloGioacchino Del Regno (15):
  arm64: dts: mediatek: mt8183-kukui: Couple VGPU and VSRAM_GPU
    regulators
  arm64: dts: mediatek: mt8183-kukui: Override vgpu/vsram_gpu
    constraints
  arm64: dts: mediatek: mt8183: Remove second opp-microvolt entries from
    gpu table
  arm64: dts: mt8183-pumpkin: Couple VGPU and VSRAM_GPU regulators
  arm64: dts: mediatek: mt8183-evb: Couple VGPU and VSRAM_GPU regulators
  arm64: dts: mediatek: mt8183: Use mediatek,mt8183b-mali as GPU
    compatible
  arm64: dts: mediatek: mt8192: Add mfg_ref_sel clock to MFG0 domain
  arm64: dts: mediatek: mt8192-asurada: Assign sram supply to MFG1 pd
  arm64: dts: mediatek: mt8192-asurada: Couple VGPU and VSRAM_OTHER
    regulators
  arm64: dts: mediatek: mt8195: Add mfg_core_tmp clock to MFG1 domain
  arm64: dts: mt8195: Add panfrost node for Mali-G57 Valhall Natt GPU
  arm64: dts: mediatek: mt8195-cherry: Enable Mali-G57 GPU
  arm64: dts: mediatek: mt8186: Add GPU node
  arm64: dts: mediatek: mt8183-pumpkin: Override vgpu/vsram_gpu
    constraints
  arm64: dts: mediatek: mt8183-evb: Override vgpu/vsram_gpu constraints

Nícolas F. R. A. Prado (1):
  arm64: dts: mediatek: mt8192-asurada: Add MFG0 domain supply

 arch/arm64/boot/dts/mediatek/mt8183-evb.dts   |  17 ++-
 .../arm64/boot/dts/mediatek/mt8183-kukui.dtsi |  17 ++-
 .../boot/dts/mediatek/mt8183-pumpkin.dts      |  17 ++-
 arch/arm64/boot/dts/mediatek/mt8183.dtsi      |  34 ++---
 arch/arm64/boot/dts/mediatek/mt8186.dtsi      |  17 +++
 .../boot/dts/mediatek/mt8192-asurada.dtsi     |  22 ++++
 arch/arm64/boot/dts/mediatek/mt8192.dtsi      | 116 +++++++++++++++++-
 .../boot/dts/mediatek/mt8195-cherry.dtsi      |   5 +
 arch/arm64/boot/dts/mediatek/mt8195.dtsi      |  95 +++++++++++++-
 9 files changed, 314 insertions(+), 26 deletions(-)

-- 
2.39.2

[PATCH v3 00/18] Enable GPU with DVFS support on MediaTek SoCs

[AngeloGioacchino Del Regno]

Changes in v3:
 - Changed MT8186 compatibles for new bindings
 - Added min/max voltage overrides for vgpu/vsram_gpu on
   mt8183-pumpkin and evb as suggested by Chen-Yu
 - Cosmetic fixes for "arm64: dts: mediatek: mt8192: Add GPU nodes"

Changes in v2:
 - Changed MT8186 to use only two power domains for the GPU.

We finally have working GPU DVFS on MediaTek SoCs.
On Panfrost.
For real.
...and the best part is that it's going upstream.

In order to get GPU DVFS working, it was necessary to satisfy a
specific constraint (which is different, depending on the SoC)
between two regulators: GPU VCORE and GPU SRAM.
This was done through adding the mtk-regulator-coupler driver,
which transparently manages the voltage relation between these
two vregs, hence completely eliminating the need to manage these
regulators in the Panfrost driver; this solves the long standing
issue with devfreq+opp tables not supporting managing voltages
for two regulators per opp entry out of the box, due to which
we never got GPU DVFS on those SoCs, often locking them out to
a low GPU frequency.

This changes. Right now!

Tested on MT8192, MT8195 Chromebooks.

This series depends on [1].

[1]: https://lore.kernel.org/lkml/20230228102704.708150-1-angelogioacchino.delregno@collabora.com/

Alyssa Rosenzweig (2):
  arm64: dts: mediatek: mt8192: Add GPU nodes
  arm64: dts: mediatek: mt8192-asurada: Enable GPU

AngeloGioacchino Del Regno (15):
  arm64: dts: mediatek: mt8183-kukui: Couple VGPU and VSRAM_GPU
    regulators
  arm64: dts: mediatek: mt8183-kukui: Override vgpu/vsram_gpu
    constraints
  arm64: dts: mediatek: mt8183: Remove second opp-microvolt entries from
    gpu table
  arm64: dts: mt8183-pumpkin: Couple VGPU and VSRAM_GPU regulators
  arm64: dts: mediatek: mt8183-evb: Couple VGPU and VSRAM_GPU regulators
  arm64: dts: mediatek: mt8183: Use mediatek,mt8183b-mali as GPU
    compatible
  arm64: dts: mediatek: mt8192: Add mfg_ref_sel clock to MFG0 domain
  arm64: dts: mediatek: mt8192-asurada: Assign sram supply to MFG1 pd
  arm64: dts: mediatek: mt8192-asurada: Couple VGPU and VSRAM_OTHER
    regulators
  arm64: dts: mediatek: mt8195: Add mfg_core_tmp clock to MFG1 domain
  arm64: dts: mt8195: Add panfrost node for Mali-G57 Valhall Natt GPU
  arm64: dts: mediatek: mt8195-cherry: Enable Mali-G57 GPU
  arm64: dts: mediatek: mt8186: Add GPU node
  arm64: dts: mediatek: mt8183-pumpkin: Override vgpu/vsram_gpu
    constraints
  arm64: dts: mediatek: mt8183-evb: Override vgpu/vsram_gpu constraints

Nícolas F. R. A. Prado (1):
  arm64: dts: mediatek: mt8192-asurada: Add MFG0 domain supply

 arch/arm64/boot/dts/mediatek/mt8183-evb.dts   |  17 ++-
 .../arm64/boot/dts/mediatek/mt8183-kukui.dtsi |  17 ++-
 .../boot/dts/mediatek/mt8183-pumpkin.dts      |  17 ++-
 arch/arm64/boot/dts/mediatek/mt8183.dtsi      |  34 ++---
 arch/arm64/boot/dts/mediatek/mt8186.dtsi      |  17 +++
 .../boot/dts/mediatek/mt8192-asurada.dtsi     |  22 ++++
 arch/arm64/boot/dts/mediatek/mt8192.dtsi      | 116 +++++++++++++++++-
 .../boot/dts/mediatek/mt8195-cherry.dtsi      |   5 +
 arch/arm64/boot/dts/mediatek/mt8195.dtsi      |  95 +++++++++++++-
 9 files changed, 314 insertions(+), 26 deletions(-)

-- 
2.39.2


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH v3 01/18] arm64: dts: mediatek: mt8183-kukui: Couple VGPU and VSRAM_GPU regulators

[AngeloGioacchino Del Regno]

Add coupling for these regulators, as they have a strict voltage output
relation to satisfy in order to ensure GPU stable operation.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
index fbe14b13051a..de9778c85b94 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
@@ -294,7 +294,6 @@ dsi_out: endpoint {
 
 &gpu {
 	mali-supply = <&mt6358_vgpu_reg>;
-	sram-supply = <&mt6358_vsram_gpu_reg>;
 };
 
 &i2c0 {
@@ -401,6 +400,11 @@ &mt6358codec {
 	Avdd-supply = <&mt6358_vaud28_reg>;
 };
 
+&mt6358_vgpu_reg {
+	regulator-coupled-with = <&mt6358_vsram_gpu_reg>;
+	regulator-coupled-max-spread = <100000>;
+};
+
 &mt6358_vsim1_reg {
 	regulator-min-microvolt = <2700000>;
 	regulator-max-microvolt = <2700000>;
@@ -411,6 +415,11 @@ &mt6358_vsim2_reg {
 	regulator-max-microvolt = <2700000>;
 };
 
+&mt6358_vsram_gpu_reg {
+	regulator-coupled-with = <&mt6358_vgpu_reg>;
+	regulator-coupled-max-spread = <100000>;
+};
+
 &pio {
 	aud_pins_default: audiopins {
 		pins_bus {
-- 
2.39.2

[PATCH v3 01/18] arm64: dts: mediatek: mt8183-kukui: Couple VGPU and VSRAM_GPU regulators

[AngeloGioacchino Del Regno]

Add coupling for these regulators, as they have a strict voltage output
relation to satisfy in order to ensure GPU stable operation.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
index fbe14b13051a..de9778c85b94 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
@@ -294,7 +294,6 @@ dsi_out: endpoint {
 
 &gpu {
 	mali-supply = <&mt6358_vgpu_reg>;
-	sram-supply = <&mt6358_vsram_gpu_reg>;
 };
 
 &i2c0 {
@@ -401,6 +400,11 @@ &mt6358codec {
 	Avdd-supply = <&mt6358_vaud28_reg>;
 };
 
+&mt6358_vgpu_reg {
+	regulator-coupled-with = <&mt6358_vsram_gpu_reg>;
+	regulator-coupled-max-spread = <100000>;
+};
+
 &mt6358_vsim1_reg {
 	regulator-min-microvolt = <2700000>;
 	regulator-max-microvolt = <2700000>;
@@ -411,6 +415,11 @@ &mt6358_vsim2_reg {
 	regulator-max-microvolt = <2700000>;
 };
 
+&mt6358_vsram_gpu_reg {
+	regulator-coupled-with = <&mt6358_vgpu_reg>;
+	regulator-coupled-max-spread = <100000>;
+};
+
 &pio {
 	aud_pins_default: audiopins {
 		pins_bus {
-- 
2.39.2


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH v3 02/18] arm64: dts: mediatek: mt8183-kukui: Override vgpu/vsram_gpu constraints

[AngeloGioacchino Del Regno]

Override the PMIC-default voltage constraints for VGPU and VSRAM_GPU
with the platform specific vmin/vmax for the highest possible SoC
binning.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
index de9778c85b94..63952c1251df 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
@@ -401,6 +401,9 @@ &mt6358codec {
 };
 
 &mt6358_vgpu_reg {
+	regulator-min-microvolt = <625000>;
+	regulator-max-microvolt = <900000>;
+
 	regulator-coupled-with = <&mt6358_vsram_gpu_reg>;
 	regulator-coupled-max-spread = <100000>;
 };
@@ -416,6 +419,9 @@ &mt6358_vsim2_reg {
 };
 
 &mt6358_vsram_gpu_reg {
+	regulator-min-microvolt = <850000>;
+	regulator-max-microvolt = <1000000>;
+
 	regulator-coupled-with = <&mt6358_vgpu_reg>;
 	regulator-coupled-max-spread = <100000>;
 };
-- 
2.39.2

[PATCH v3 02/18] arm64: dts: mediatek: mt8183-kukui: Override vgpu/vsram_gpu constraints

[AngeloGioacchino Del Regno]

Override the PMIC-default voltage constraints for VGPU and VSRAM_GPU
with the platform specific vmin/vmax for the highest possible SoC
binning.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
index de9778c85b94..63952c1251df 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
@@ -401,6 +401,9 @@ &mt6358codec {
 };
 
 &mt6358_vgpu_reg {
+	regulator-min-microvolt = <625000>;
+	regulator-max-microvolt = <900000>;
+
 	regulator-coupled-with = <&mt6358_vsram_gpu_reg>;
 	regulator-coupled-max-spread = <100000>;
 };
@@ -416,6 +419,9 @@ &mt6358_vsim2_reg {
 };
 
 &mt6358_vsram_gpu_reg {
+	regulator-min-microvolt = <850000>;
+	regulator-max-microvolt = <1000000>;
+
 	regulator-coupled-with = <&mt6358_vgpu_reg>;
 	regulator-coupled-max-spread = <100000>;
 };
-- 
2.39.2


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH v3 03/18] arm64: dts: mediatek: mt8183: Remove second opp-microvolt entries from gpu table

[AngeloGioacchino Del Regno]

This was done to keep a strict relation between VSRAM and VGPU, but
it never worked: now we're doing it transparently with the new
mediatek-regulator-coupler driver.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8183.dtsi | 32 ++++++++++++------------
 1 file changed, 16 insertions(+), 16 deletions(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
index 3d1d7870a5f1..e01b96adef02 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
@@ -563,82 +563,82 @@ gpu_opp_table: opp-table-0 {
 
 		opp-300000000 {
 			opp-hz = /bits/ 64 <300000000>;
-			opp-microvolt = <625000>, <850000>;
+			opp-microvolt = <625000>;
 		};
 
 		opp-320000000 {
 			opp-hz = /bits/ 64 <320000000>;
-			opp-microvolt = <631250>, <850000>;
+			opp-microvolt = <631250>;
 		};
 
 		opp-340000000 {
 			opp-hz = /bits/ 64 <340000000>;
-			opp-microvolt = <637500>, <850000>;
+			opp-microvolt = <637500>;
 		};
 
 		opp-360000000 {
 			opp-hz = /bits/ 64 <360000000>;
-			opp-microvolt = <643750>, <850000>;
+			opp-microvolt = <643750>;
 		};
 
 		opp-380000000 {
 			opp-hz = /bits/ 64 <380000000>;
-			opp-microvolt = <650000>, <850000>;
+			opp-microvolt = <650000>;
 		};
 
 		opp-400000000 {
 			opp-hz = /bits/ 64 <400000000>;
-			opp-microvolt = <656250>, <850000>;
+			opp-microvolt = <656250>;
 		};
 
 		opp-420000000 {
 			opp-hz = /bits/ 64 <420000000>;
-			opp-microvolt = <662500>, <850000>;
+			opp-microvolt = <662500>;
 		};
 
 		opp-460000000 {
 			opp-hz = /bits/ 64 <460000000>;
-			opp-microvolt = <675000>, <850000>;
+			opp-microvolt = <675000>;
 		};
 
 		opp-500000000 {
 			opp-hz = /bits/ 64 <500000000>;
-			opp-microvolt = <687500>, <850000>;
+			opp-microvolt = <687500>;
 		};
 
 		opp-540000000 {
 			opp-hz = /bits/ 64 <540000000>;
-			opp-microvolt = <700000>, <850000>;
+			opp-microvolt = <700000>;
 		};
 
 		opp-580000000 {
 			opp-hz = /bits/ 64 <580000000>;
-			opp-microvolt = <712500>, <850000>;
+			opp-microvolt = <712500>;
 		};
 
 		opp-620000000 {
 			opp-hz = /bits/ 64 <620000000>;
-			opp-microvolt = <725000>, <850000>;
+			opp-microvolt = <725000>;
 		};
 
 		opp-653000000 {
 			opp-hz = /bits/ 64 <653000000>;
-			opp-microvolt = <743750>, <850000>;
+			opp-microvolt = <743750>;
 		};
 
 		opp-698000000 {
 			opp-hz = /bits/ 64 <698000000>;
-			opp-microvolt = <768750>, <868750>;
+			opp-microvolt = <768750>;
 		};
 
 		opp-743000000 {
 			opp-hz = /bits/ 64 <743000000>;
-			opp-microvolt = <793750>, <893750>;
+			opp-microvolt = <793750>;
 		};
 
 		opp-800000000 {
 			opp-hz = /bits/ 64 <800000000>;
-			opp-microvolt = <825000>, <925000>;
+			opp-microvolt = <825000>;
 		};
 	};
 
-- 
2.39.2

[PATCH v3 03/18] arm64: dts: mediatek: mt8183: Remove second opp-microvolt entries from gpu table

[AngeloGioacchino Del Regno]

This was done to keep a strict relation between VSRAM and VGPU, but
it never worked: now we're doing it transparently with the new
mediatek-regulator-coupler driver.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8183.dtsi | 32 ++++++++++++------------
 1 file changed, 16 insertions(+), 16 deletions(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
index 3d1d7870a5f1..e01b96adef02 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
@@ -563,82 +563,82 @@ gpu_opp_table: opp-table-0 {
 
 		opp-300000000 {
 			opp-hz = /bits/ 64 <300000000>;
-			opp-microvolt = <625000>, <850000>;
+			opp-microvolt = <625000>;
 		};
 
 		opp-320000000 {
 			opp-hz = /bits/ 64 <320000000>;
-			opp-microvolt = <631250>, <850000>;
+			opp-microvolt = <631250>;
 		};
 
 		opp-340000000 {
 			opp-hz = /bits/ 64 <340000000>;
-			opp-microvolt = <637500>, <850000>;
+			opp-microvolt = <637500>;
 		};
 
 		opp-360000000 {
 			opp-hz = /bits/ 64 <360000000>;
-			opp-microvolt = <643750>, <850000>;
+			opp-microvolt = <643750>;
 		};
 
 		opp-380000000 {
 			opp-hz = /bits/ 64 <380000000>;
-			opp-microvolt = <650000>, <850000>;
+			opp-microvolt = <650000>;
 		};
 
 		opp-400000000 {
 			opp-hz = /bits/ 64 <400000000>;
-			opp-microvolt = <656250>, <850000>;
+			opp-microvolt = <656250>;
 		};
 
 		opp-420000000 {
 			opp-hz = /bits/ 64 <420000000>;
-			opp-microvolt = <662500>, <850000>;
+			opp-microvolt = <662500>;
 		};
 
 		opp-460000000 {
 			opp-hz = /bits/ 64 <460000000>;
-			opp-microvolt = <675000>, <850000>;
+			opp-microvolt = <675000>;
 		};
 
 		opp-500000000 {
 			opp-hz = /bits/ 64 <500000000>;
-			opp-microvolt = <687500>, <850000>;
+			opp-microvolt = <687500>;
 		};
 
 		opp-540000000 {
 			opp-hz = /bits/ 64 <540000000>;
-			opp-microvolt = <700000>, <850000>;
+			opp-microvolt = <700000>;
 		};
 
 		opp-580000000 {
 			opp-hz = /bits/ 64 <580000000>;
-			opp-microvolt = <712500>, <850000>;
+			opp-microvolt = <712500>;
 		};
 
 		opp-620000000 {
 			opp-hz = /bits/ 64 <620000000>;
-			opp-microvolt = <725000>, <850000>;
+			opp-microvolt = <725000>;
 		};
 
 		opp-653000000 {
 			opp-hz = /bits/ 64 <653000000>;
-			opp-microvolt = <743750>, <850000>;
+			opp-microvolt = <743750>;
 		};
 
 		opp-698000000 {
 			opp-hz = /bits/ 64 <698000000>;
-			opp-microvolt = <768750>, <868750>;
+			opp-microvolt = <768750>;
 		};
 
 		opp-743000000 {
 			opp-hz = /bits/ 64 <743000000>;
-			opp-microvolt = <793750>, <893750>;
+			opp-microvolt = <793750>;
 		};
 
 		opp-800000000 {
 			opp-hz = /bits/ 64 <800000000>;
-			opp-microvolt = <825000>, <925000>;
+			opp-microvolt = <825000>;
 		};
 	};
 
-- 
2.39.2


_______________________________________________
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[PATCH v3 04/18] arm64: dts: mt8183-pumpkin: Couple VGPU and VSRAM_GPU regulators

[AngeloGioacchino Del Regno]

Add coupling for these regulators, as they have a strict voltage output
relation to satisfy in order to ensure GPU stable operation.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts b/arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts
index a1d01639df30..c228f04d086b 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts
@@ -71,7 +71,6 @@ &auxadc {
 
 &gpu {
 	mali-supply = <&mt6358_vgpu_reg>;
-	sram-supply = <&mt6358_vsram_gpu_reg>;
 };
 
 &i2c0 {
@@ -176,6 +175,16 @@ &mmc1 {
 	non-removable;
 };
 
+&mt6358_vgpu_reg {
+	regulator-coupled-with = <&mt6358_vsram_gpu_reg>;
+	regulator-coupled-max-spread = <100000>;
+};
+
+&mt6358_vsram_gpu_reg {
+	regulator-coupled-with = <&mt6358_vgpu_reg>;
+	regulator-coupled-max-spread = <100000>;
+};
+
 &pio {
 	i2c_pins_0: i2c0 {
 		pins_i2c{
-- 
2.39.2

[PATCH v3 04/18] arm64: dts: mt8183-pumpkin: Couple VGPU and VSRAM_GPU regulators

[AngeloGioacchino Del Regno]

Add coupling for these regulators, as they have a strict voltage output
relation to satisfy in order to ensure GPU stable operation.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts b/arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts
index a1d01639df30..c228f04d086b 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts
@@ -71,7 +71,6 @@ &auxadc {
 
 &gpu {
 	mali-supply = <&mt6358_vgpu_reg>;
-	sram-supply = <&mt6358_vsram_gpu_reg>;
 };
 
 &i2c0 {
@@ -176,6 +175,16 @@ &mmc1 {
 	non-removable;
 };
 
+&mt6358_vgpu_reg {
+	regulator-coupled-with = <&mt6358_vsram_gpu_reg>;
+	regulator-coupled-max-spread = <100000>;
+};
+
+&mt6358_vsram_gpu_reg {
+	regulator-coupled-with = <&mt6358_vgpu_reg>;
+	regulator-coupled-max-spread = <100000>;
+};
+
 &pio {
 	i2c_pins_0: i2c0 {
 		pins_i2c{
-- 
2.39.2


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[PATCH v3 05/18] arm64: dts: mediatek: mt8183-evb: Couple VGPU and VSRAM_GPU regulators

[AngeloGioacchino Del Regno]

Add coupling for these regulators, as they have a strict voltage output
relation to satisfy in order to ensure GPU stable operation.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 arch/arm64/boot/dts/mediatek/mt8183-evb.dts | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183-evb.dts b/arch/arm64/boot/dts/mediatek/mt8183-evb.dts
index 52dc4a50e34d..fd327437e932 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183-evb.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8183-evb.dts
@@ -52,7 +52,6 @@ &auxadc {
 
 &gpu {
 	mali-supply = <&mt6358_vgpu_reg>;
-	sram-supply = <&mt6358_vsram_gpu_reg>;
 };
 
 &i2c0 {
@@ -138,6 +137,16 @@ &mmc1 {
 	non-removable;
 };
 
+&mt6358_vgpu_reg {
+	regulator-coupled-with = <&mt6358_vsram_gpu_reg>;
+	regulator-coupled-max-spread = <100000>;
+};
+
+&mt6358_vsram_gpu_reg {
+	regulator-coupled-with = <&mt6358_vgpu_reg>;
+	regulator-coupled-max-spread = <100000>;
+};
+
 &pio {
 	i2c_pins_0: i2c0{
 		pins_i2c{
-- 
2.39.2

[PATCH v3 05/18] arm64: dts: mediatek: mt8183-evb: Couple VGPU and VSRAM_GPU regulators

[AngeloGioacchino Del Regno]

Add coupling for these regulators, as they have a strict voltage output
relation to satisfy in order to ensure GPU stable operation.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 arch/arm64/boot/dts/mediatek/mt8183-evb.dts | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183-evb.dts b/arch/arm64/boot/dts/mediatek/mt8183-evb.dts
index 52dc4a50e34d..fd327437e932 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183-evb.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8183-evb.dts
@@ -52,7 +52,6 @@ &auxadc {
 
 &gpu {
 	mali-supply = <&mt6358_vgpu_reg>;
-	sram-supply = <&mt6358_vsram_gpu_reg>;
 };
 
 &i2c0 {
@@ -138,6 +137,16 @@ &mmc1 {
 	non-removable;
 };
 
+&mt6358_vgpu_reg {
+	regulator-coupled-with = <&mt6358_vsram_gpu_reg>;
+	regulator-coupled-max-spread = <100000>;
+};
+
+&mt6358_vsram_gpu_reg {
+	regulator-coupled-with = <&mt6358_vgpu_reg>;
+	regulator-coupled-max-spread = <100000>;
+};
+
 &pio {
 	i2c_pins_0: i2c0{
 		pins_i2c{
-- 
2.39.2


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[PATCH v3 06/18] arm64: dts: mediatek: mt8183: Use mediatek,mt8183b-mali as GPU compatible

[AngeloGioacchino Del Regno]

Use the new GPU related compatible to finally enable GPU DVFS on
the MT8183 SoC.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8183.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
index e01b96adef02..5169779d01df 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
@@ -1752,7 +1752,7 @@ mfgcfg: syscon@13000000 {
 		};
 
 		gpu: gpu@13040000 {
-			compatible = "mediatek,mt8183-mali", "arm,mali-bifrost";
+			compatible = "mediatek,mt8183b-mali", "arm,mali-bifrost";
 			reg = <0 0x13040000 0 0x4000>;
 			interrupts =
 				<GIC_SPI 280 IRQ_TYPE_LEVEL_LOW>,
-- 
2.39.2

[PATCH v3 06/18] arm64: dts: mediatek: mt8183: Use mediatek,mt8183b-mali as GPU compatible

[AngeloGioacchino Del Regno]

Use the new GPU related compatible to finally enable GPU DVFS on
the MT8183 SoC.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8183.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
index e01b96adef02..5169779d01df 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
@@ -1752,7 +1752,7 @@ mfgcfg: syscon@13000000 {
 		};
 
 		gpu: gpu@13040000 {
-			compatible = "mediatek,mt8183-mali", "arm,mali-bifrost";
+			compatible = "mediatek,mt8183b-mali", "arm,mali-bifrost";
 			reg = <0 0x13040000 0 0x4000>;
 			interrupts =
 				<GIC_SPI 280 IRQ_TYPE_LEVEL_LOW>,
-- 
2.39.2


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[PATCH v3 07/18] arm64: dts: mediatek: mt8192: Add GPU nodes

[AngeloGioacchino Del Regno]

From: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>

The MediaTek MT8192 includes a Mali-G57 GPU supported in Panfrost. Add
the GPU node to the device tree to enable 3D acceleration.

The GPU node is disabled by default. It should be enabled by board with
its power supplies correctly assigned.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
[nfraprado: removed sram supply, tweaked opp node name, adjusted commit message]
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
[wenst@: disable GPU by default; adjusted prefix; split out board change]
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
[Angelo: cosmetic fixes]
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8192.dtsi | 107 +++++++++++++++++++++++
 1 file changed, 107 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8192.dtsi b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
index 87b91c8feaf9..34631adc52c6 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
@@ -312,6 +312,91 @@ timer: timer {
 		clock-frequency = <13000000>;
 	};
 
+	gpu_opp_table: opp-table-0 {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-358000000 {
+			opp-hz = /bits/ 64 <358000000>;
+			opp-microvolt = <606250>;
+		};
+
+		opp-399000000 {
+			opp-hz = /bits/ 64 <399000000>;
+			opp-microvolt = <618750>;
+		};
+
+		opp-440000000 {
+			opp-hz = /bits/ 64 <440000000>;
+			opp-microvolt = <631250>;
+		};
+
+		opp-482000000 {
+			opp-hz = /bits/ 64 <482000000>;
+			opp-microvolt = <643750>;
+		};
+
+		opp-523000000 {
+			opp-hz = /bits/ 64 <523000000>;
+			opp-microvolt = <656250>;
+		};
+
+		opp-564000000 {
+			opp-hz = /bits/ 64 <564000000>;
+			opp-microvolt = <668750>;
+		};
+
+		opp-605000000 {
+			opp-hz = /bits/ 64 <605000000>;
+			opp-microvolt = <681250>;
+		};
+
+		opp-647000000 {
+			opp-hz = /bits/ 64 <647000000>;
+			opp-microvolt = <693750>;
+		};
+
+		opp-688000000 {
+			opp-hz = /bits/ 64 <688000000>;
+			opp-microvolt = <706250>;
+		};
+
+		opp-724000000 {
+			opp-hz = /bits/ 64 <724000000>;
+			opp-microvolt = <725000>;
+		};
+
+		opp-748000000 {
+			opp-hz = /bits/ 64 <748000000>;
+			opp-microvolt = <737500>;
+		};
+
+		opp-772000000 {
+			opp-hz = /bits/ 64 <772000000>;
+			opp-microvolt = <750000>;
+		};
+
+		opp-795000000 {
+			opp-hz = /bits/ 64 <795000000>;
+			opp-microvolt = <762500>;
+		};
+
+		opp-819000000 {
+			opp-hz = /bits/ 64 <819000000>;
+			opp-microvolt = <775000>;
+		};
+
+		opp-843000000 {
+			opp-hz = /bits/ 64 <843000000>;
+			opp-microvolt = <787500>;
+		};
+
+		opp-866000000 {
+			opp-hz = /bits/ 64 <866000000>;
+			opp-microvolt = <800000>;
+		};
+	};
+
 	soc {
 		#address-cells = <2>;
 		#size-cells = <2>;
@@ -1266,6 +1351,28 @@ mmc1: mmc@11f70000 {
 			status = "disabled";
 		};
 
+		gpu: gpu@13000000 {
+			compatible = "mediatek,mt8192-mali", "arm,mali-valhall-jm";
+			reg = <0 0x13000000 0 0x4000>;
+			interrupts = <GIC_SPI 365 IRQ_TYPE_LEVEL_HIGH 0>,
+				     <GIC_SPI 364 IRQ_TYPE_LEVEL_HIGH 0>,
+				     <GIC_SPI 363 IRQ_TYPE_LEVEL_HIGH 0>;
+			interrupt-names = "job", "mmu", "gpu";
+
+			clocks = <&apmixedsys CLK_APMIXED_MFGPLL>;
+
+			power-domains = <&spm MT8192_POWER_DOMAIN_MFG2>,
+					<&spm MT8192_POWER_DOMAIN_MFG3>,
+					<&spm MT8192_POWER_DOMAIN_MFG4>,
+					<&spm MT8192_POWER_DOMAIN_MFG5>,
+					<&spm MT8192_POWER_DOMAIN_MFG6>;
+			power-domain-names = "core0", "core1", "core2", "core3", "core4";
+
+			operating-points-v2 = <&gpu_opp_table>;
+
+			status = "disabled";
+		};
+
 		mfgcfg: clock-controller@13fbf000 {
 			compatible = "mediatek,mt8192-mfgcfg";
 			reg = <0 0x13fbf000 0 0x1000>;
-- 
2.39.2

[PATCH v3 07/18] arm64: dts: mediatek: mt8192: Add GPU nodes

[AngeloGioacchino Del Regno]

From: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>

The MediaTek MT8192 includes a Mali-G57 GPU supported in Panfrost. Add
the GPU node to the device tree to enable 3D acceleration.

The GPU node is disabled by default. It should be enabled by board with
its power supplies correctly assigned.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
[nfraprado: removed sram supply, tweaked opp node name, adjusted commit message]
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
[wenst@: disable GPU by default; adjusted prefix; split out board change]
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
[Angelo: cosmetic fixes]
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8192.dtsi | 107 +++++++++++++++++++++++
 1 file changed, 107 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8192.dtsi b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
index 87b91c8feaf9..34631adc52c6 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
@@ -312,6 +312,91 @@ timer: timer {
 		clock-frequency = <13000000>;
 	};
 
+	gpu_opp_table: opp-table-0 {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-358000000 {
+			opp-hz = /bits/ 64 <358000000>;
+			opp-microvolt = <606250>;
+		};
+
+		opp-399000000 {
+			opp-hz = /bits/ 64 <399000000>;
+			opp-microvolt = <618750>;
+		};
+
+		opp-440000000 {
+			opp-hz = /bits/ 64 <440000000>;
+			opp-microvolt = <631250>;
+		};
+
+		opp-482000000 {
+			opp-hz = /bits/ 64 <482000000>;
+			opp-microvolt = <643750>;
+		};
+
+		opp-523000000 {
+			opp-hz = /bits/ 64 <523000000>;
+			opp-microvolt = <656250>;
+		};
+
+		opp-564000000 {
+			opp-hz = /bits/ 64 <564000000>;
+			opp-microvolt = <668750>;
+		};
+
+		opp-605000000 {
+			opp-hz = /bits/ 64 <605000000>;
+			opp-microvolt = <681250>;
+		};
+
+		opp-647000000 {
+			opp-hz = /bits/ 64 <647000000>;
+			opp-microvolt = <693750>;
+		};
+
+		opp-688000000 {
+			opp-hz = /bits/ 64 <688000000>;
+			opp-microvolt = <706250>;
+		};
+
+		opp-724000000 {
+			opp-hz = /bits/ 64 <724000000>;
+			opp-microvolt = <725000>;
+		};
+
+		opp-748000000 {
+			opp-hz = /bits/ 64 <748000000>;
+			opp-microvolt = <737500>;
+		};
+
+		opp-772000000 {
+			opp-hz = /bits/ 64 <772000000>;
+			opp-microvolt = <750000>;
+		};
+
+		opp-795000000 {
+			opp-hz = /bits/ 64 <795000000>;
+			opp-microvolt = <762500>;
+		};
+
+		opp-819000000 {
+			opp-hz = /bits/ 64 <819000000>;
+			opp-microvolt = <775000>;
+		};
+
+		opp-843000000 {
+			opp-hz = /bits/ 64 <843000000>;
+			opp-microvolt = <787500>;
+		};
+
+		opp-866000000 {
+			opp-hz = /bits/ 64 <866000000>;
+			opp-microvolt = <800000>;
+		};
+	};
+
 	soc {
 		#address-cells = <2>;
 		#size-cells = <2>;
@@ -1266,6 +1351,28 @@ mmc1: mmc@11f70000 {
 			status = "disabled";
 		};
 
+		gpu: gpu@13000000 {
+			compatible = "mediatek,mt8192-mali", "arm,mali-valhall-jm";
+			reg = <0 0x13000000 0 0x4000>;
+			interrupts = <GIC_SPI 365 IRQ_TYPE_LEVEL_HIGH 0>,
+				     <GIC_SPI 364 IRQ_TYPE_LEVEL_HIGH 0>,
+				     <GIC_SPI 363 IRQ_TYPE_LEVEL_HIGH 0>;
+			interrupt-names = "job", "mmu", "gpu";
+
+			clocks = <&apmixedsys CLK_APMIXED_MFGPLL>;
+
+			power-domains = <&spm MT8192_POWER_DOMAIN_MFG2>,
+					<&spm MT8192_POWER_DOMAIN_MFG3>,
+					<&spm MT8192_POWER_DOMAIN_MFG4>,
+					<&spm MT8192_POWER_DOMAIN_MFG5>,
+					<&spm MT8192_POWER_DOMAIN_MFG6>;
+			power-domain-names = "core0", "core1", "core2", "core3", "core4";
+
+			operating-points-v2 = <&gpu_opp_table>;
+
+			status = "disabled";
+		};
+
 		mfgcfg: clock-controller@13fbf000 {
 			compatible = "mediatek,mt8192-mfgcfg";
 			reg = <0 0x13fbf000 0 0x1000>;
-- 
2.39.2


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[PATCH v3 08/18] arm64: dts: mediatek: mt8192: Add mfg_ref_sel clock to MFG0 domain

[AngeloGioacchino Del Regno]

The mfg_ref_sel clock is a mux used to switch between different "safe"
(and slower) clock sources for the GPU: this is used during MFGPLL
reconfiguration and eventually during idling at very low frequencies.

This clock getting turned off means that the GPU will occasionally be
unclocked, producing obvious consequences such as system crash or
unpredictable behavior: assigning it to the top level MFG power domain
will make sure that this stays on at all times during any operation on
the MFG domain (only GPU-related transactions).

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8192.dtsi | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8192.dtsi b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
index 34631adc52c6..a29cdff8a095 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
@@ -499,8 +499,9 @@ power-domain@MT8192_POWER_DOMAIN_CONN {
 
 				power-domain@MT8192_POWER_DOMAIN_MFG0 {
 					reg = <MT8192_POWER_DOMAIN_MFG0>;
-					clocks = <&topckgen CLK_TOP_MFG_PLL_SEL>;
-					clock-names = "mfg";
+					clocks = <&topckgen CLK_TOP_MFG_PLL_SEL>,
+						 <&topckgen CLK_TOP_MFG_REF_SEL>;
+					clock-names = "mfg", "alt";
 					#address-cells = <1>;
 					#size-cells = <0>;
 					#power-domain-cells = <1>;
-- 
2.39.2

[PATCH v3 08/18] arm64: dts: mediatek: mt8192: Add mfg_ref_sel clock to MFG0 domain

[AngeloGioacchino Del Regno]

The mfg_ref_sel clock is a mux used to switch between different "safe"
(and slower) clock sources for the GPU: this is used during MFGPLL
reconfiguration and eventually during idling at very low frequencies.

This clock getting turned off means that the GPU will occasionally be
unclocked, producing obvious consequences such as system crash or
unpredictable behavior: assigning it to the top level MFG power domain
will make sure that this stays on at all times during any operation on
the MFG domain (only GPU-related transactions).

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8192.dtsi | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8192.dtsi b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
index 34631adc52c6..a29cdff8a095 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
@@ -499,8 +499,9 @@ power-domain@MT8192_POWER_DOMAIN_CONN {
 
 				power-domain@MT8192_POWER_DOMAIN_MFG0 {
 					reg = <MT8192_POWER_DOMAIN_MFG0>;
-					clocks = <&topckgen CLK_TOP_MFG_PLL_SEL>;
-					clock-names = "mfg";
+					clocks = <&topckgen CLK_TOP_MFG_PLL_SEL>,
+						 <&topckgen CLK_TOP_MFG_REF_SEL>;
+					clock-names = "mfg", "alt";
 					#address-cells = <1>;
 					#size-cells = <0>;
 					#power-domain-cells = <1>;
-- 
2.39.2


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[PATCH v3 09/18] arm64: dts: mediatek: mt8192-asurada: Add MFG0 domain supply

[AngeloGioacchino Del Regno]

From: Nícolas F. R. A. Prado <nfraprado@collabora.com>

The mfg0 power domain encompasses the whole GPU and its surrounding
glue logic. This power domain has a separate power rail.

Add its power supply for Asurada.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
[wenst@chromium.org: fix subject prefix and add commit message]
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
[Angelo: Reordered commits to address DVFS stability issues]
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi | 4 ++++
 arch/arm64/boot/dts/mediatek/mt8192.dtsi         | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
index 9f12257ab4e7..ec013d5ef157 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
@@ -380,6 +380,10 @@ &i2c7 {
 	pinctrl-0 = <&i2c7_pins>;
 };
 
+&mfg0 {
+	domain-supply = <&mt6315_7_vbuck1>;
+};
+
 &mipi_tx0 {
 	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/mediatek/mt8192.dtsi b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
index a29cdff8a095..f19d4a8ef3f6 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
@@ -497,7 +497,7 @@ power-domain@MT8192_POWER_DOMAIN_CONN {
 					#power-domain-cells = <0>;
 				};
 
-				power-domain@MT8192_POWER_DOMAIN_MFG0 {
+				mfg0: power-domain@MT8192_POWER_DOMAIN_MFG0 {
 					reg = <MT8192_POWER_DOMAIN_MFG0>;
 					clocks = <&topckgen CLK_TOP_MFG_PLL_SEL>,
 						 <&topckgen CLK_TOP_MFG_REF_SEL>;
-- 
2.39.2

[PATCH v3 09/18] arm64: dts: mediatek: mt8192-asurada: Add MFG0 domain supply

[AngeloGioacchino Del Regno]

From: Nícolas F. R. A. Prado <nfraprado@collabora.com>

The mfg0 power domain encompasses the whole GPU and its surrounding
glue logic. This power domain has a separate power rail.

Add its power supply for Asurada.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
[wenst@chromium.org: fix subject prefix and add commit message]
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
[Angelo: Reordered commits to address DVFS stability issues]
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi | 4 ++++
 arch/arm64/boot/dts/mediatek/mt8192.dtsi         | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
index 9f12257ab4e7..ec013d5ef157 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
@@ -380,6 +380,10 @@ &i2c7 {
 	pinctrl-0 = <&i2c7_pins>;
 };
 
+&mfg0 {
+	domain-supply = <&mt6315_7_vbuck1>;
+};
+
 &mipi_tx0 {
 	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/mediatek/mt8192.dtsi b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
index a29cdff8a095..f19d4a8ef3f6 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
@@ -497,7 +497,7 @@ power-domain@MT8192_POWER_DOMAIN_CONN {
 					#power-domain-cells = <0>;
 				};
 
-				power-domain@MT8192_POWER_DOMAIN_MFG0 {
+				mfg0: power-domain@MT8192_POWER_DOMAIN_MFG0 {
 					reg = <MT8192_POWER_DOMAIN_MFG0>;
 					clocks = <&topckgen CLK_TOP_MFG_PLL_SEL>,
 						 <&topckgen CLK_TOP_MFG_REF_SEL>;
-- 
2.39.2


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[PATCH v3 10/18] arm64: dts: mediatek: mt8192-asurada: Assign sram supply to MFG1 pd

[AngeloGioacchino Del Regno]

Add a phandle to the MT8192_POWER_DOMAIN_MFG1 power domain and
assign the GPU VSRAM supply to this in mt8192-asurada: this allows to
keep the sram powered up while the GPU is used.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi | 4 ++++
 arch/arm64/boot/dts/mediatek/mt8192.dtsi         | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
index ec013d5ef157..df477eb89f21 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
@@ -384,6 +384,10 @@ &mfg0 {
 	domain-supply = <&mt6315_7_vbuck1>;
 };
 
+&mfg1 {
+	domain-supply = <&mt6359_vsram_others_ldo_reg>;
+};
+
 &mipi_tx0 {
 	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/mediatek/mt8192.dtsi b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
index f19d4a8ef3f6..5c30caf74026 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
@@ -506,7 +506,7 @@ mfg0: power-domain@MT8192_POWER_DOMAIN_MFG0 {
 					#size-cells = <0>;
 					#power-domain-cells = <1>;
 
-					power-domain@MT8192_POWER_DOMAIN_MFG1 {
+					mfg1: power-domain@MT8192_POWER_DOMAIN_MFG1 {
 						reg = <MT8192_POWER_DOMAIN_MFG1>;
 						mediatek,infracfg = <&infracfg>;
 						#address-cells = <1>;
-- 
2.39.2

[PATCH v3 10/18] arm64: dts: mediatek: mt8192-asurada: Assign sram supply to MFG1 pd

[AngeloGioacchino Del Regno]

Add a phandle to the MT8192_POWER_DOMAIN_MFG1 power domain and
assign the GPU VSRAM supply to this in mt8192-asurada: this allows to
keep the sram powered up while the GPU is used.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi | 4 ++++
 arch/arm64/boot/dts/mediatek/mt8192.dtsi         | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
index ec013d5ef157..df477eb89f21 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
@@ -384,6 +384,10 @@ &mfg0 {
 	domain-supply = <&mt6315_7_vbuck1>;
 };
 
+&mfg1 {
+	domain-supply = <&mt6359_vsram_others_ldo_reg>;
+};
+
 &mipi_tx0 {
 	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/mediatek/mt8192.dtsi b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
index f19d4a8ef3f6..5c30caf74026 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
@@ -506,7 +506,7 @@ mfg0: power-domain@MT8192_POWER_DOMAIN_MFG0 {
 					#size-cells = <0>;
 					#power-domain-cells = <1>;
 
-					power-domain@MT8192_POWER_DOMAIN_MFG1 {
+					mfg1: power-domain@MT8192_POWER_DOMAIN_MFG1 {
 						reg = <MT8192_POWER_DOMAIN_MFG1>;
 						mediatek,infracfg = <&infracfg>;
 						#address-cells = <1>;
-- 
2.39.2


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[PATCH v3 11/18] arm64: dts: mediatek: mt8192-asurada: Couple VGPU and VSRAM_OTHER regulators

[AngeloGioacchino Del Regno]

Add coupling for these regulators, as VSRAM_OTHER is used to power the
GPU SRAM, and they have a strict voltage output relation to satisfy in
order to ensure GPU stable operation.
While at it, also add voltage constraint overrides for the GPU SRAM
regulator "mt6359_vsram_others", but don't touch mt6315's vbuck1 as
its constraints are fine.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
index df477eb89f21..c8b6e1a9605b 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
@@ -447,6 +447,13 @@ &mt6359_vrf12_ldo_reg {
 	regulator-always-on;
 };
 
+&mt6359_vsram_others_ldo_reg {
+	regulator-min-microvolt = <750000>;
+	regulator-max-microvolt = <850000>;
+	regulator-coupled-with = <&mt6315_7_vbuck1>;
+	regulator-coupled-max-spread = <10000>;
+};
+
 &mt6359_vufs_ldo_reg {
 	regulator-always-on;
 };
@@ -1411,6 +1418,8 @@ mt6315_7_vbuck1: vbuck1 {
 				regulator-max-microvolt = <1193750>;
 				regulator-enable-ramp-delay = <256>;
 				regulator-allowed-modes = <0 1 2>;
+				regulator-coupled-with = <&mt6359_vsram_others_ldo_reg>;
+				regulator-coupled-max-spread = <10000>;
 			};
 		};
 	};
-- 
2.39.2

[PATCH v3 11/18] arm64: dts: mediatek: mt8192-asurada: Couple VGPU and VSRAM_OTHER regulators

[AngeloGioacchino Del Regno]

Add coupling for these regulators, as VSRAM_OTHER is used to power the
GPU SRAM, and they have a strict voltage output relation to satisfy in
order to ensure GPU stable operation.
While at it, also add voltage constraint overrides for the GPU SRAM
regulator "mt6359_vsram_others", but don't touch mt6315's vbuck1 as
its constraints are fine.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
index df477eb89f21..c8b6e1a9605b 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
@@ -447,6 +447,13 @@ &mt6359_vrf12_ldo_reg {
 	regulator-always-on;
 };
 
+&mt6359_vsram_others_ldo_reg {
+	regulator-min-microvolt = <750000>;
+	regulator-max-microvolt = <850000>;
+	regulator-coupled-with = <&mt6315_7_vbuck1>;
+	regulator-coupled-max-spread = <10000>;
+};
+
 &mt6359_vufs_ldo_reg {
 	regulator-always-on;
 };
@@ -1411,6 +1418,8 @@ mt6315_7_vbuck1: vbuck1 {
 				regulator-max-microvolt = <1193750>;
 				regulator-enable-ramp-delay = <256>;
 				regulator-allowed-modes = <0 1 2>;
+				regulator-coupled-with = <&mt6359_vsram_others_ldo_reg>;
+				regulator-coupled-max-spread = <10000>;
 			};
 		};
 	};
-- 
2.39.2


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[PATCH v3 12/18] arm64: dts: mediatek: mt8192-asurada: Enable GPU

[AngeloGioacchino Del Regno]

From: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>

Enable the GPU with its power supplies described.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
[wenst@: patch split out from MT8192 GPU node patch]
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
[Angelo: Minor commit title fix]
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
index c8b6e1a9605b..067685191ba6 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
@@ -275,6 +275,11 @@ &dsi_out {
 	remote-endpoint = <&anx7625_in>;
 };
 
+&gpu {
+	mali-supply = <&mt6315_7_vbuck1>;
+	status = "okay";
+};
+
 &i2c0 {
 	status = "okay";
 
-- 
2.39.2

[PATCH v3 12/18] arm64: dts: mediatek: mt8192-asurada: Enable GPU

[AngeloGioacchino Del Regno]

From: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>

Enable the GPU with its power supplies described.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
[wenst@: patch split out from MT8192 GPU node patch]
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
[Angelo: Minor commit title fix]
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
index c8b6e1a9605b..067685191ba6 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
@@ -275,6 +275,11 @@ &dsi_out {
 	remote-endpoint = <&anx7625_in>;
 };
 
+&gpu {
+	mali-supply = <&mt6315_7_vbuck1>;
+	status = "okay";
+};
+
 &i2c0 {
 	status = "okay";
 
-- 
2.39.2


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[PATCH v3 13/18] arm64: dts: mediatek: mt8195: Add mfg_core_tmp clock to MFG1 domain

[AngeloGioacchino Del Regno]

Similarly to what can be seen in MT8192, on MT8195 the mfg_core_tmp
clock is a mux used to switch between different "safe" (and slower)
clock sources for the GPU: this is used during MFGPLL reconfiguration
and eventually during idling at very low frequencies.

This clock getting turned off means that the GPU will occasionally be
unclocked, producing obvious consequences such as system crash or
unpredictable behavior: assigning it to the top level MFG power domain
will make sure that this stays on at all times during any operation on
the MFG domain (only GPU-related transactions).

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8195.dtsi | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8195.dtsi b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
index 8f1264d5290b..d116830d6af3 100644
--- a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
@@ -446,8 +446,9 @@ mfg0: power-domain@MT8195_POWER_DOMAIN_MFG0 {
 
 					power-domain@MT8195_POWER_DOMAIN_MFG1 {
 						reg = <MT8195_POWER_DOMAIN_MFG1>;
-						clocks = <&apmixedsys CLK_APMIXED_MFGPLL>;
-						clock-names = "mfg";
+						clocks = <&apmixedsys CLK_APMIXED_MFGPLL>,
+							 <&topckgen CLK_TOP_MFG_CORE_TMP>;
+						clock-names = "mfg", "alt";
 						mediatek,infracfg = <&infracfg_ao>;
 						#address-cells = <1>;
 						#size-cells = <0>;
-- 
2.39.2

[PATCH v3 13/18] arm64: dts: mediatek: mt8195: Add mfg_core_tmp clock to MFG1 domain

[AngeloGioacchino Del Regno]

Similarly to what can be seen in MT8192, on MT8195 the mfg_core_tmp
clock is a mux used to switch between different "safe" (and slower)
clock sources for the GPU: this is used during MFGPLL reconfiguration
and eventually during idling at very low frequencies.

This clock getting turned off means that the GPU will occasionally be
unclocked, producing obvious consequences such as system crash or
unpredictable behavior: assigning it to the top level MFG power domain
will make sure that this stays on at all times during any operation on
the MFG domain (only GPU-related transactions).

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8195.dtsi | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8195.dtsi b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
index 8f1264d5290b..d116830d6af3 100644
--- a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
@@ -446,8 +446,9 @@ mfg0: power-domain@MT8195_POWER_DOMAIN_MFG0 {
 
 					power-domain@MT8195_POWER_DOMAIN_MFG1 {
 						reg = <MT8195_POWER_DOMAIN_MFG1>;
-						clocks = <&apmixedsys CLK_APMIXED_MFGPLL>;
-						clock-names = "mfg";
+						clocks = <&apmixedsys CLK_APMIXED_MFGPLL>,
+							 <&topckgen CLK_TOP_MFG_CORE_TMP>;
+						clock-names = "mfg", "alt";
 						mediatek,infracfg = <&infracfg_ao>;
 						#address-cells = <1>;
 						#size-cells = <0>;
-- 
2.39.2


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[PATCH v3 14/18] arm64: dts: mt8195: Add panfrost node for Mali-G57 Valhall Natt GPU

[AngeloGioacchino Del Regno]

Add GPU support through panfrost for the Mali-G57 GPU on MT8195
with its OPP table but keep it in disabled state.

This is expected to be enabled only on boards which make use of
the GPU.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8195.dtsi | 90 ++++++++++++++++++++++++
 1 file changed, 90 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8195.dtsi b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
index d116830d6af3..0e4ee7713c30 100644
--- a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
@@ -333,6 +333,76 @@ performance: performance-controller@11bc10 {
 		#performance-domain-cells = <1>;
 	};
 
+	gpu_opp_table: opp-table-gpu {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-390000000 {
+			opp-hz = /bits/ 64 <390000000>;
+			opp-microvolt = <625000>;
+		};
+		opp-410000000 {
+			opp-hz = /bits/ 64 <410000000>;
+			opp-microvolt = <631250>;
+		};
+		opp-431000000 {
+			opp-hz = /bits/ 64 <431000000>;
+			opp-microvolt = <631250>;
+		};
+		opp-473000000 {
+			opp-hz = /bits/ 64 <473000000>;
+			opp-microvolt = <637500>;
+		};
+		opp-515000000 {
+			opp-hz = /bits/ 64 <515000000>;
+			opp-microvolt = <637500>;
+		};
+		opp-556000000 {
+			opp-hz = /bits/ 64 <556000000>;
+			opp-microvolt = <643750>;
+		};
+		opp-598000000 {
+			opp-hz = /bits/ 64 <598000000>;
+			opp-microvolt = <650000>;
+		};
+		opp-640000000 {
+			opp-hz = /bits/ 64 <640000000>;
+			opp-microvolt = <650000>;
+		};
+		opp-670000000 {
+			opp-hz = /bits/ 64 <670000000>;
+			opp-microvolt = <662500>;
+		};
+		opp-700000000 {
+			opp-hz = /bits/ 64 <700000000>;
+			opp-microvolt = <675000>;
+		};
+		opp-730000000 {
+			opp-hz = /bits/ 64 <730000000>;
+			opp-microvolt = <687500>;
+		};
+		opp-760000000 {
+			opp-hz = /bits/ 64 <760000000>;
+			opp-microvolt = <700000>;
+		};
+		opp-790000000 {
+			opp-hz = /bits/ 64 <790000000>;
+			opp-microvolt = <712500>;
+		};
+		opp-820000000 {
+			opp-hz = /bits/ 64 <820000000>;
+			opp-microvolt = <725000>;
+		};
+		opp-850000000 {
+			opp-hz = /bits/ 64 <850000000>;
+			opp-microvolt = <737500>;
+		};
+		opp-880000000 {
+			opp-hz = /bits/ 64 <880000000>;
+			opp-microvolt = <750000>;
+		};
+	};
+
 	pmu-a55 {
 		compatible = "arm,cortex-a55-pmu";
 		interrupt-parent = <&gic>;
@@ -1790,6 +1860,26 @@ ufsphy: ufs-phy@11fa0000 {
 			status = "disabled";
 		};
 
+		gpu: gpu@13000000 {
+			compatible = "mediatek,mt8195-mali", "mediatek,mt8192-mali",
+				     "arm,mali-valhall-jm";
+			reg = <0 0x13000000 0 0x4000>;
+
+			clocks = <&mfgcfg CLK_MFG_BG3D>;
+			interrupts = <GIC_SPI 397 IRQ_TYPE_LEVEL_HIGH 0>,
+				     <GIC_SPI 396 IRQ_TYPE_LEVEL_HIGH 0>,
+				     <GIC_SPI 395 IRQ_TYPE_LEVEL_HIGH 0>;
+			interrupt-names = "job", "mmu", "gpu";
+			operating-points-v2 = <&gpu_opp_table>;
+			power-domains = <&spm MT8195_POWER_DOMAIN_MFG2>,
+					<&spm MT8195_POWER_DOMAIN_MFG3>,
+					<&spm MT8195_POWER_DOMAIN_MFG4>,
+					<&spm MT8195_POWER_DOMAIN_MFG5>,
+					<&spm MT8195_POWER_DOMAIN_MFG6>;
+			power-domain-names = "core0", "core1", "core2", "core3", "core4";
+			status = "disabled";
+		};
+
 		mfgcfg: clock-controller@13fbf000 {
 			compatible = "mediatek,mt8195-mfgcfg";
 			reg = <0 0x13fbf000 0 0x1000>;
-- 
2.39.2

[PATCH v3 14/18] arm64: dts: mt8195: Add panfrost node for Mali-G57 Valhall Natt GPU

[AngeloGioacchino Del Regno]

Add GPU support through panfrost for the Mali-G57 GPU on MT8195
with its OPP table but keep it in disabled state.

This is expected to be enabled only on boards which make use of
the GPU.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8195.dtsi | 90 ++++++++++++++++++++++++
 1 file changed, 90 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8195.dtsi b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
index d116830d6af3..0e4ee7713c30 100644
--- a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
@@ -333,6 +333,76 @@ performance: performance-controller@11bc10 {
 		#performance-domain-cells = <1>;
 	};
 
+	gpu_opp_table: opp-table-gpu {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-390000000 {
+			opp-hz = /bits/ 64 <390000000>;
+			opp-microvolt = <625000>;
+		};
+		opp-410000000 {
+			opp-hz = /bits/ 64 <410000000>;
+			opp-microvolt = <631250>;
+		};
+		opp-431000000 {
+			opp-hz = /bits/ 64 <431000000>;
+			opp-microvolt = <631250>;
+		};
+		opp-473000000 {
+			opp-hz = /bits/ 64 <473000000>;
+			opp-microvolt = <637500>;
+		};
+		opp-515000000 {
+			opp-hz = /bits/ 64 <515000000>;
+			opp-microvolt = <637500>;
+		};
+		opp-556000000 {
+			opp-hz = /bits/ 64 <556000000>;
+			opp-microvolt = <643750>;
+		};
+		opp-598000000 {
+			opp-hz = /bits/ 64 <598000000>;
+			opp-microvolt = <650000>;
+		};
+		opp-640000000 {
+			opp-hz = /bits/ 64 <640000000>;
+			opp-microvolt = <650000>;
+		};
+		opp-670000000 {
+			opp-hz = /bits/ 64 <670000000>;
+			opp-microvolt = <662500>;
+		};
+		opp-700000000 {
+			opp-hz = /bits/ 64 <700000000>;
+			opp-microvolt = <675000>;
+		};
+		opp-730000000 {
+			opp-hz = /bits/ 64 <730000000>;
+			opp-microvolt = <687500>;
+		};
+		opp-760000000 {
+			opp-hz = /bits/ 64 <760000000>;
+			opp-microvolt = <700000>;
+		};
+		opp-790000000 {
+			opp-hz = /bits/ 64 <790000000>;
+			opp-microvolt = <712500>;
+		};
+		opp-820000000 {
+			opp-hz = /bits/ 64 <820000000>;
+			opp-microvolt = <725000>;
+		};
+		opp-850000000 {
+			opp-hz = /bits/ 64 <850000000>;
+			opp-microvolt = <737500>;
+		};
+		opp-880000000 {
+			opp-hz = /bits/ 64 <880000000>;
+			opp-microvolt = <750000>;
+		};
+	};
+
 	pmu-a55 {
 		compatible = "arm,cortex-a55-pmu";
 		interrupt-parent = <&gic>;
@@ -1790,6 +1860,26 @@ ufsphy: ufs-phy@11fa0000 {
 			status = "disabled";
 		};
 
+		gpu: gpu@13000000 {
+			compatible = "mediatek,mt8195-mali", "mediatek,mt8192-mali",
+				     "arm,mali-valhall-jm";
+			reg = <0 0x13000000 0 0x4000>;
+
+			clocks = <&mfgcfg CLK_MFG_BG3D>;
+			interrupts = <GIC_SPI 397 IRQ_TYPE_LEVEL_HIGH 0>,
+				     <GIC_SPI 396 IRQ_TYPE_LEVEL_HIGH 0>,
+				     <GIC_SPI 395 IRQ_TYPE_LEVEL_HIGH 0>;
+			interrupt-names = "job", "mmu", "gpu";
+			operating-points-v2 = <&gpu_opp_table>;
+			power-domains = <&spm MT8195_POWER_DOMAIN_MFG2>,
+					<&spm MT8195_POWER_DOMAIN_MFG3>,
+					<&spm MT8195_POWER_DOMAIN_MFG4>,
+					<&spm MT8195_POWER_DOMAIN_MFG5>,
+					<&spm MT8195_POWER_DOMAIN_MFG6>;
+			power-domain-names = "core0", "core1", "core2", "core3", "core4";
+			status = "disabled";
+		};
+
 		mfgcfg: clock-controller@13fbf000 {
 			compatible = "mediatek,mt8195-mfgcfg";
 			reg = <0 0x13fbf000 0 0x1000>;
-- 
2.39.2


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[PATCH v3 15/18] arm64: dts: mediatek: mt8195-cherry: Enable Mali-G57 GPU

[AngeloGioacchino Del Regno]

Enable the Mali-G57 found on this platform with the open-source
Panfrost driver.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
index 56749cfe7c33..24669093fbed 100644
--- a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
@@ -238,6 +238,11 @@ dptx_out: endpoint {
 	};
 };
 
+&gpu {
+	status = "okay";
+	mali-supply = <&mt6315_7_vbuck1>;
+};
+
 &i2c0 {
 	status = "okay";
 
-- 
2.39.2

[PATCH v3 15/18] arm64: dts: mediatek: mt8195-cherry: Enable Mali-G57 GPU

[AngeloGioacchino Del Regno]

Enable the Mali-G57 found on this platform with the open-source
Panfrost driver.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
index 56749cfe7c33..24669093fbed 100644
--- a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
@@ -238,6 +238,11 @@ dptx_out: endpoint {
 	};
 };
 
+&gpu {
+	status = "okay";
+	mali-supply = <&mt6315_7_vbuck1>;
+};
+
 &i2c0 {
 	status = "okay";
 
-- 
2.39.2


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[PATCH v3 16/18] arm64: dts: mediatek: mt8186: Add GPU node

[AngeloGioacchino Del Regno]

Add a GPU node for MT8186 SoC but keep it disabled.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8186.dtsi | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8186.dtsi b/arch/arm64/boot/dts/mediatek/mt8186.dtsi
index a0d3e1f731bd..78ff8ba5718e 100644
--- a/arch/arm64/boot/dts/mediatek/mt8186.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8186.dtsi
@@ -1075,6 +1075,23 @@ mfgsys: clock-controller@13000000 {
 			#clock-cells = <1>;
 		};
 
+		gpu: gpu@13040000 {
+			compatible = "mediatek,mt8186-mali",
+				     "arm,mali-bifrost";
+			reg = <0 0x13040000 0 0x4000>;
+
+			clocks = <&mfgsys CLK_MFG_BG3D>;
+			interrupts = <GIC_SPI 276 IRQ_TYPE_LEVEL_HIGH 0>,
+				     <GIC_SPI 275 IRQ_TYPE_LEVEL_HIGH 0>,
+				     <GIC_SPI 274 IRQ_TYPE_LEVEL_HIGH 0>;
+			interrupt-names = "job", "mmu", "gpu";
+			power-domains = <&spm MT8186_POWER_DOMAIN_MFG2>,
+					<&spm MT8186_POWER_DOMAIN_MFG3>;
+			power-domain-names = "core0", "core1";
+			#cooling-cells = <2>;
+			status = "disabled";
+		};
+
 		mmsys: syscon@14000000 {
 			compatible = "mediatek,mt8186-mmsys", "syscon";
 			reg = <0 0x14000000 0 0x1000>;
-- 
2.39.2

[PATCH v3 16/18] arm64: dts: mediatek: mt8186: Add GPU node

[AngeloGioacchino Del Regno]

Add a GPU node for MT8186 SoC but keep it disabled.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8186.dtsi | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8186.dtsi b/arch/arm64/boot/dts/mediatek/mt8186.dtsi
index a0d3e1f731bd..78ff8ba5718e 100644
--- a/arch/arm64/boot/dts/mediatek/mt8186.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8186.dtsi
@@ -1075,6 +1075,23 @@ mfgsys: clock-controller@13000000 {
 			#clock-cells = <1>;
 		};
 
+		gpu: gpu@13040000 {
+			compatible = "mediatek,mt8186-mali",
+				     "arm,mali-bifrost";
+			reg = <0 0x13040000 0 0x4000>;
+
+			clocks = <&mfgsys CLK_MFG_BG3D>;
+			interrupts = <GIC_SPI 276 IRQ_TYPE_LEVEL_HIGH 0>,
+				     <GIC_SPI 275 IRQ_TYPE_LEVEL_HIGH 0>,
+				     <GIC_SPI 274 IRQ_TYPE_LEVEL_HIGH 0>;
+			interrupt-names = "job", "mmu", "gpu";
+			power-domains = <&spm MT8186_POWER_DOMAIN_MFG2>,
+					<&spm MT8186_POWER_DOMAIN_MFG3>;
+			power-domain-names = "core0", "core1";
+			#cooling-cells = <2>;
+			status = "disabled";
+		};
+
 		mmsys: syscon@14000000 {
 			compatible = "mediatek,mt8186-mmsys", "syscon";
 			reg = <0 0x14000000 0 0x1000>;
-- 
2.39.2


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[PATCH v3 17/18] arm64: dts: mediatek: mt8183-pumpkin: Override vgpu/vsram_gpu constraints

[AngeloGioacchino Del Regno]

Override the PMIC-default voltage constraints for VGPU and VSRAM_GPU
with the platform specific vmin/vmax for the highest possible SoC
binning.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Suggested-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts b/arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts
index c228f04d086b..526bcae7a3f8 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts
@@ -176,11 +176,17 @@ &mmc1 {
 };
 
 &mt6358_vgpu_reg {
+	regulator-min-microvolt = <625000>;
+	regulator-max-microvolt = <900000>;
+
 	regulator-coupled-with = <&mt6358_vsram_gpu_reg>;
 	regulator-coupled-max-spread = <100000>;
 };
 
 &mt6358_vsram_gpu_reg {
+	regulator-min-microvolt = <850000>;
+	regulator-max-microvolt = <1000000>;
+
 	regulator-coupled-with = <&mt6358_vgpu_reg>;
 	regulator-coupled-max-spread = <100000>;
 };
-- 
2.39.2

[PATCH v3 17/18] arm64: dts: mediatek: mt8183-pumpkin: Override vgpu/vsram_gpu constraints

[AngeloGioacchino Del Regno]

Override the PMIC-default voltage constraints for VGPU and VSRAM_GPU
with the platform specific vmin/vmax for the highest possible SoC
binning.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Suggested-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts b/arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts
index c228f04d086b..526bcae7a3f8 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts
@@ -176,11 +176,17 @@ &mmc1 {
 };
 
 &mt6358_vgpu_reg {
+	regulator-min-microvolt = <625000>;
+	regulator-max-microvolt = <900000>;
+
 	regulator-coupled-with = <&mt6358_vsram_gpu_reg>;
 	regulator-coupled-max-spread = <100000>;
 };
 
 &mt6358_vsram_gpu_reg {
+	regulator-min-microvolt = <850000>;
+	regulator-max-microvolt = <1000000>;
+
 	regulator-coupled-with = <&mt6358_vgpu_reg>;
 	regulator-coupled-max-spread = <100000>;
 };
-- 
2.39.2


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[PATCH v3 18/18] arm64: dts: mediatek: mt8183-evb: Override vgpu/vsram_gpu constraints

[AngeloGioacchino Del Regno]

Override the PMIC-default voltage constraints for VGPU and VSRAM_GPU
with the platform specific vmin/vmax for the highest possible SoC
binning.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Suggested-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8183-evb.dts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183-evb.dts b/arch/arm64/boot/dts/mediatek/mt8183-evb.dts
index fd327437e932..3e3f4b1b00f0 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183-evb.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8183-evb.dts
@@ -138,11 +138,17 @@ &mmc1 {
 };
 
 &mt6358_vgpu_reg {
+	regulator-min-microvolt = <625000>;
+	regulator-max-microvolt = <900000>;
+
 	regulator-coupled-with = <&mt6358_vsram_gpu_reg>;
 	regulator-coupled-max-spread = <100000>;
 };
 
 &mt6358_vsram_gpu_reg {
+	regulator-min-microvolt = <850000>;
+	regulator-max-microvolt = <1000000>;
+
 	regulator-coupled-with = <&mt6358_vgpu_reg>;
 	regulator-coupled-max-spread = <100000>;
 };
-- 
2.39.2

[PATCH v3 18/18] arm64: dts: mediatek: mt8183-evb: Override vgpu/vsram_gpu constraints

[AngeloGioacchino Del Regno]

Override the PMIC-default voltage constraints for VGPU and VSRAM_GPU
with the platform specific vmin/vmax for the highest possible SoC
binning.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Suggested-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8183-evb.dts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183-evb.dts b/arch/arm64/boot/dts/mediatek/mt8183-evb.dts
index fd327437e932..3e3f4b1b00f0 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183-evb.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8183-evb.dts
@@ -138,11 +138,17 @@ &mmc1 {
 };
 
 &mt6358_vgpu_reg {
+	regulator-min-microvolt = <625000>;
+	regulator-max-microvolt = <900000>;
+
 	regulator-coupled-with = <&mt6358_vsram_gpu_reg>;
 	regulator-coupled-max-spread = <100000>;
 };
 
 &mt6358_vsram_gpu_reg {
+	regulator-min-microvolt = <850000>;
+	regulator-max-microvolt = <1000000>;
+
 	regulator-coupled-with = <&mt6358_vgpu_reg>;
 	regulator-coupled-max-spread = <100000>;
 };
-- 
2.39.2


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Re: [PATCH v3 02/18] arm64: dts: mediatek: mt8183-kukui: Override vgpu/vsram_gpu constraints

[Chen-Yu Tsai]

On Tue, Feb 28, 2023 at 6:47 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com> wrote:
>
> Override the PMIC-default voltage constraints for VGPU and VSRAM_GPU
> with the platform specific vmin/vmax for the highest possible SoC
> binning.
>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>

Re: [PATCH v3 02/18] arm64: dts: mediatek: mt8183-kukui: Override vgpu/vsram_gpu constraints

[Chen-Yu Tsai]

On Tue, Feb 28, 2023 at 6:47 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com> wrote:
>
> Override the PMIC-default voltage constraints for VGPU and VSRAM_GPU
> with the platform specific vmin/vmax for the highest possible SoC
> binning.
>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>

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Re: [PATCH v3 04/18] arm64: dts: mt8183-pumpkin: Couple VGPU and VSRAM_GPU regulators

[Chen-Yu Tsai]

On Tue, Feb 28, 2023 at 6:47 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com> wrote:
>
> Add coupling for these regulators, as they have a strict voltage output
> relation to satisfy in order to ensure GPU stable operation.
>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>

Re: [PATCH v3 04/18] arm64: dts: mt8183-pumpkin: Couple VGPU and VSRAM_GPU regulators

[Chen-Yu Tsai]

On Tue, Feb 28, 2023 at 6:47 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com> wrote:
>
> Add coupling for these regulators, as they have a strict voltage output
> relation to satisfy in order to ensure GPU stable operation.
>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>

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Re: [PATCH v3 05/18] arm64: dts: mediatek: mt8183-evb: Couple VGPU and VSRAM_GPU regulators

[Chen-Yu Tsai]

On Tue, Feb 28, 2023 at 6:47 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com> wrote:
>
> Add coupling for these regulators, as they have a strict voltage output
> relation to satisfy in order to ensure GPU stable operation.
>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>

Re: [PATCH v3 05/18] arm64: dts: mediatek: mt8183-evb: Couple VGPU and VSRAM_GPU regulators

[Chen-Yu Tsai]

On Tue, Feb 28, 2023 at 6:47 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com> wrote:
>
> Add coupling for these regulators, as they have a strict voltage output
> relation to satisfy in order to ensure GPU stable operation.
>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>

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Re: [PATCH v3 11/18] arm64: dts: mediatek: mt8192-asurada: Couple VGPU and VSRAM_OTHER regulators

[Chen-Yu Tsai]

On Tue, Feb 28, 2023 at 6:47 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com> wrote:
>
> Add coupling for these regulators, as VSRAM_OTHER is used to power the
> GPU SRAM, and they have a strict voltage output relation to satisfy in
> order to ensure GPU stable operation.
> While at it, also add voltage constraint overrides for the GPU SRAM
> regulator "mt6359_vsram_others", but don't touch mt6315's vbuck1 as
> its constraints are fine.

The minimum voltage on vbuck1 matches the lowest OPP. However the maximum
voltage is set to the maximum of the regulator itself. The MT8192 datasheet
says the absolute maximum for the GPU is 0.8V, and the recommended range
for 0.8V is 0.72V ~ 0.88V. The highest OPP we have is 0.8V, so I would
just set the maximum voltage to that?

ChenYu

> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> ---
>  arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi | 9 +++++++++
>  1 file changed, 9 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
> index df477eb89f21..c8b6e1a9605b 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
> @@ -447,6 +447,13 @@ &mt6359_vrf12_ldo_reg {
>         regulator-always-on;
>  };
>
> +&mt6359_vsram_others_ldo_reg {
> +       regulator-min-microvolt = <750000>;
> +       regulator-max-microvolt = <850000>;
> +       regulator-coupled-with = <&mt6315_7_vbuck1>;
> +       regulator-coupled-max-spread = <10000>;
> +};
> +
>  &mt6359_vufs_ldo_reg {
>         regulator-always-on;
>  };
> @@ -1411,6 +1418,8 @@ mt6315_7_vbuck1: vbuck1 {
>                                 regulator-max-microvolt = <1193750>;
>                                 regulator-enable-ramp-delay = <256>;
>                                 regulator-allowed-modes = <0 1 2>;
> +                               regulator-coupled-with = <&mt6359_vsram_others_ldo_reg>;
> +                               regulator-coupled-max-spread = <10000>;
>                         };
>                 };
>         };
> --
> 2.39.2
>

Re: [PATCH v3 11/18] arm64: dts: mediatek: mt8192-asurada: Couple VGPU and VSRAM_OTHER regulators

[Chen-Yu Tsai]

On Tue, Feb 28, 2023 at 6:47 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com> wrote:
>
> Add coupling for these regulators, as VSRAM_OTHER is used to power the
> GPU SRAM, and they have a strict voltage output relation to satisfy in
> order to ensure GPU stable operation.
> While at it, also add voltage constraint overrides for the GPU SRAM
> regulator "mt6359_vsram_others", but don't touch mt6315's vbuck1 as
> its constraints are fine.

The minimum voltage on vbuck1 matches the lowest OPP. However the maximum
voltage is set to the maximum of the regulator itself. The MT8192 datasheet
says the absolute maximum for the GPU is 0.8V, and the recommended range
for 0.8V is 0.72V ~ 0.88V. The highest OPP we have is 0.8V, so I would
just set the maximum voltage to that?

ChenYu

> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> ---
>  arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi | 9 +++++++++
>  1 file changed, 9 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
> index df477eb89f21..c8b6e1a9605b 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
> @@ -447,6 +447,13 @@ &mt6359_vrf12_ldo_reg {
>         regulator-always-on;
>  };
>
> +&mt6359_vsram_others_ldo_reg {
> +       regulator-min-microvolt = <750000>;
> +       regulator-max-microvolt = <850000>;
> +       regulator-coupled-with = <&mt6315_7_vbuck1>;
> +       regulator-coupled-max-spread = <10000>;
> +};
> +
>  &mt6359_vufs_ldo_reg {
>         regulator-always-on;
>  };
> @@ -1411,6 +1418,8 @@ mt6315_7_vbuck1: vbuck1 {
>                                 regulator-max-microvolt = <1193750>;
>                                 regulator-enable-ramp-delay = <256>;
>                                 regulator-allowed-modes = <0 1 2>;
> +                               regulator-coupled-with = <&mt6359_vsram_others_ldo_reg>;
> +                               regulator-coupled-max-spread = <10000>;
>                         };
>                 };
>         };
> --
> 2.39.2
>

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Re: [PATCH v3 17/18] arm64: dts: mediatek: mt8183-pumpkin: Override vgpu/vsram_gpu constraints

[Chen-Yu Tsai]

On Tue, Feb 28, 2023 at 6:48 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com> wrote:
>
> Override the PMIC-default voltage constraints for VGPU and VSRAM_GPU
> with the platform specific vmin/vmax for the highest possible SoC
> binning.
>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> Suggested-by: Chen-Yu Tsai <wenst@chromium.org>

Chen-Yu Tsai <wenst@chromium.org>

Re: [PATCH v3 17/18] arm64: dts: mediatek: mt8183-pumpkin: Override vgpu/vsram_gpu constraints

[Chen-Yu Tsai]

On Tue, Feb 28, 2023 at 6:48 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com> wrote:
>
> Override the PMIC-default voltage constraints for VGPU and VSRAM_GPU
> with the platform specific vmin/vmax for the highest possible SoC
> binning.
>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> Suggested-by: Chen-Yu Tsai <wenst@chromium.org>

Chen-Yu Tsai <wenst@chromium.org>

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Re: [PATCH v3 18/18] arm64: dts: mediatek: mt8183-evb: Override vgpu/vsram_gpu constraints

[Chen-Yu Tsai]

On Tue, Feb 28, 2023 at 6:48 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com> wrote:
>
> Override the PMIC-default voltage constraints for VGPU and VSRAM_GPU
> with the platform specific vmin/vmax for the highest possible SoC
> binning.
>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> Suggested-by: Chen-Yu Tsai <wenst@chromium.org>

Chen-Yu Tsai <wenst@chromium.org>

Re: [PATCH v3 18/18] arm64: dts: mediatek: mt8183-evb: Override vgpu/vsram_gpu constraints

[Chen-Yu Tsai]

On Tue, Feb 28, 2023 at 6:48 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com> wrote:
>
> Override the PMIC-default voltage constraints for VGPU and VSRAM_GPU
> with the platform specific vmin/vmax for the highest possible SoC
> binning.
>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> Suggested-by: Chen-Yu Tsai <wenst@chromium.org>

Chen-Yu Tsai <wenst@chromium.org>

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Re: [PATCH v3 18/18] arm64: dts: mediatek: mt8183-evb: Override vgpu/vsram_gpu constraints

[Chen-Yu Tsai]

On Wed, Mar 1, 2023 at 12:54 PM Chen-Yu Tsai <wenst@chromium.org> wrote:
>
> On Tue, Feb 28, 2023 at 6:48 PM AngeloGioacchino Del Regno
> <angelogioacchino.delregno@collabora.com> wrote:
> >
> > Override the PMIC-default voltage constraints for VGPU and VSRAM_GPU
> > with the platform specific vmin/vmax for the highest possible SoC
> > binning.
> >
> > Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> > Suggested-by: Chen-Yu Tsai <wenst@chromium.org>

Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>

Re: [PATCH v3 18/18] arm64: dts: mediatek: mt8183-evb: Override vgpu/vsram_gpu constraints

[Chen-Yu Tsai]

On Wed, Mar 1, 2023 at 12:54 PM Chen-Yu Tsai <wenst@chromium.org> wrote:
>
> On Tue, Feb 28, 2023 at 6:48 PM AngeloGioacchino Del Regno
> <angelogioacchino.delregno@collabora.com> wrote:
> >
> > Override the PMIC-default voltage constraints for VGPU and VSRAM_GPU
> > with the platform specific vmin/vmax for the highest possible SoC
> > binning.
> >
> > Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> > Suggested-by: Chen-Yu Tsai <wenst@chromium.org>

Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>

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Re: [PATCH v3 11/18] arm64: dts: mediatek: mt8192-asurada: Couple VGPU and VSRAM_OTHER regulators

[AngeloGioacchino Del Regno]

Il 01/03/23 05:53, Chen-Yu Tsai ha scritto:
> On Tue, Feb 28, 2023 at 6:47 PM AngeloGioacchino Del Regno
> <angelogioacchino.delregno@collabora.com> wrote:
>>
>> Add coupling for these regulators, as VSRAM_OTHER is used to power the
>> GPU SRAM, and they have a strict voltage output relation to satisfy in
>> order to ensure GPU stable operation.
>> While at it, also add voltage constraint overrides for the GPU SRAM
>> regulator "mt6359_vsram_others", but don't touch mt6315's vbuck1 as
>> its constraints are fine.
> 
> The minimum voltage on vbuck1 matches the lowest OPP. However the maximum
> voltage is set to the maximum of the regulator itself. The MT8192 datasheet
> says the absolute maximum for the GPU is 0.8V, and the recommended range
> for 0.8V is 0.72V ~ 0.88V. The highest OPP we have is 0.8V, so I would
> just set the maximum voltage to that?
> 

The point was that we'd never get vbuck1 at more than vsram+10mV because
of the constraints that are set with regulator-coupled-max-spread, but
thinking about it again, relying on that is *highly* suboptimal.

Yes, you're right, let's change the constraints on vbuck1 to 800mV: that's
going to be for v4.

Thanks!
Angelo

> ChenYu
> 
>> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
>> ---
>>   arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi | 9 +++++++++
>>   1 file changed, 9 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
>> index df477eb89f21..c8b6e1a9605b 100644
>> --- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
>> +++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
>> @@ -447,6 +447,13 @@ &mt6359_vrf12_ldo_reg {
>>          regulator-always-on;
>>   };
>>
>> +&mt6359_vsram_others_ldo_reg {
>> +       regulator-min-microvolt = <750000>;
>> +       regulator-max-microvolt = <850000>;
>> +       regulator-coupled-with = <&mt6315_7_vbuck1>;
>> +       regulator-coupled-max-spread = <10000>;
>> +};
>> +
>>   &mt6359_vufs_ldo_reg {
>>          regulator-always-on;
>>   };
>> @@ -1411,6 +1418,8 @@ mt6315_7_vbuck1: vbuck1 {
>>                                  regulator-max-microvolt = <1193750>;
>>                                  regulator-enable-ramp-delay = <256>;
>>                                  regulator-allowed-modes = <0 1 2>;
>> +                               regulator-coupled-with = <&mt6359_vsram_others_ldo_reg>;
>> +                               regulator-coupled-max-spread = <10000>;
>>                          };
>>                  };
>>          };
>> --
>> 2.39.2
>>

Re: [PATCH v3 11/18] arm64: dts: mediatek: mt8192-asurada: Couple VGPU and VSRAM_OTHER regulators

[AngeloGioacchino Del Regno]

Il 01/03/23 05:53, Chen-Yu Tsai ha scritto:
> On Tue, Feb 28, 2023 at 6:47 PM AngeloGioacchino Del Regno
> <angelogioacchino.delregno@collabora.com> wrote:
>>
>> Add coupling for these regulators, as VSRAM_OTHER is used to power the
>> GPU SRAM, and they have a strict voltage output relation to satisfy in
>> order to ensure GPU stable operation.
>> While at it, also add voltage constraint overrides for the GPU SRAM
>> regulator "mt6359_vsram_others", but don't touch mt6315's vbuck1 as
>> its constraints are fine.
> 
> The minimum voltage on vbuck1 matches the lowest OPP. However the maximum
> voltage is set to the maximum of the regulator itself. The MT8192 datasheet
> says the absolute maximum for the GPU is 0.8V, and the recommended range
> for 0.8V is 0.72V ~ 0.88V. The highest OPP we have is 0.8V, so I would
> just set the maximum voltage to that?
> 

The point was that we'd never get vbuck1 at more than vsram+10mV because
of the constraints that are set with regulator-coupled-max-spread, but
thinking about it again, relying on that is *highly* suboptimal.

Yes, you're right, let's change the constraints on vbuck1 to 800mV: that's
going to be for v4.

Thanks!
Angelo

> ChenYu
> 
>> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
>> ---
>>   arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi | 9 +++++++++
>>   1 file changed, 9 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
>> index df477eb89f21..c8b6e1a9605b 100644
>> --- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
>> +++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
>> @@ -447,6 +447,13 @@ &mt6359_vrf12_ldo_reg {
>>          regulator-always-on;
>>   };
>>
>> +&mt6359_vsram_others_ldo_reg {
>> +       regulator-min-microvolt = <750000>;
>> +       regulator-max-microvolt = <850000>;
>> +       regulator-coupled-with = <&mt6315_7_vbuck1>;
>> +       regulator-coupled-max-spread = <10000>;
>> +};
>> +
>>   &mt6359_vufs_ldo_reg {
>>          regulator-always-on;
>>   };
>> @@ -1411,6 +1418,8 @@ mt6315_7_vbuck1: vbuck1 {
>>                                  regulator-max-microvolt = <1193750>;
>>                                  regulator-enable-ramp-delay = <256>;
>>                                  regulator-allowed-modes = <0 1 2>;
>> +                               regulator-coupled-with = <&mt6359_vsram_others_ldo_reg>;
>> +                               regulator-coupled-max-spread = <10000>;
>>                          };
>>                  };
>>          };
>> --
>> 2.39.2
>>


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