diff mbox series

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

Message ID 20230228104741.717819-6-angelogioacchino.delregno@collabora.com
State New
Headers
Series Enable GPU with DVFS support on MediaTek SoCs |

Commit Message

AngeloGioacchino Del Regno Feb. 28, 2023, 10:47 a.m. UTC 
  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(-)

Comments

Chen-Yu Tsai March 1, 2023, 4:39 a.m. UTC | #1 
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>
diff mbox series

Patch

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{