linux-kernel - [PATCH v2] arm64: dts: mediatek: mt8188-geralt: Enable first SCP core

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Message-ID: <20250814092510.211672-1-wenst@chromium.org>
Date: Thu, 14 Aug 2025 17:25:08 +0800
From: Chen-Yu Tsai <wenst@...omium.org>
To: Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: Chen-Yu Tsai <wenst@...omium.org>,
	linux-mediatek@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Fei Shao <fshao@...omium.org>
Subject: [PATCH v2] arm64: dts: mediatek: mt8188-geralt: Enable first SCP core

The first SCP core is used to drive the video decoder and encoders.

Signed-off-by: Chen-Yu Tsai <wenst@...omium.org>
---
Changes since v1:
- Added SCP vreq pin
---
 .../boot/dts/mediatek/mt8188-geralt.dtsi      | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8188-geralt.dtsi b/arch/arm64/boot/dts/mediatek/mt8188-geralt.dtsi
index c5254ae0bb99..7fedbacdac44 100644
--- a/arch/arm64/boot/dts/mediatek/mt8188-geralt.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8188-geralt.dtsi
@@ -164,6 +164,12 @@ reserved_memory: reserved-memory {
 		#size-cells = <2>;
 		ranges;
 
+		scp_mem_reserved: memory@...00000 {
+			compatible = "shared-dma-pool";
+			reg = <0 0x50000000 0 0x800000>;
+			no-map;
+		};
+
 		apu_mem: memory@...00000 {
 			compatible = "shared-dma-pool";
 			reg = <0 0x55000000 0 0x1400000>;
@@ -1077,6 +1083,13 @@ pins-bus {
 		};
 	};
 
+	scp_pins: scp-pins {
+		pins-scp-vreq {
+			pinmux = <PINMUX_GPIO98__FUNC_O_SCP_VREQ_VAO>;
+			bias-disable;
+		};
+	};
+
 	spi0_pins: spi0-pins {
 		pins-bus {
 			pinmux = <PINMUX_GPIO69__FUNC_O_SPIM0_CSB>,
@@ -1146,6 +1159,18 @@ &postmask0_out {
 	remote-endpoint = <&dither0_in>;
 };
 
+&scp_cluster {
+	status = "okay";
+};
+
+&scp_c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&scp_pins>;
+	firmware-name = "mediatek/mt8188/scp.img";
+	memory-region = <&scp_mem_reserved>;
+	status = "okay";
+};
+
 &sound {
 	pinctrl-names = "aud_etdm_hp_on", "aud_etdm_hp_off",
 			"aud_etdm_spk_on", "aud_etdm_spk_off",
-- 
2.51.0.rc1.163.g2494970778-goog