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

From: Chen-Yu Tsai
Date: Thu Aug 14 2025 - 05:27:42 EST


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

Signed-off-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx>
---
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@50000000 {
+ compatible = "shared-dma-pool";
+ reg = <0 0x50000000 0 0x800000>;
+ no-map;
+ };
+
apu_mem: memory@55000000 {
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