[PATCH v2 1/8] arm64: dts: mediatek: cherry: Enable the System Companion Processor

AngeloGioacchino Del Regno
2022-07-21T14:50:39Z

MT8195 features a SCP like some other older SoCs, and Cherry uses it
for various tasks. Add the required pin configuration and DMA pool
and enable the node.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
.../boot/dts/mediatek/mt8195-cherry.dtsi | 28 +++++++++++++++++++
1 file changed, 28 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
index fcc600674339..feebbe367e93 100644
--- a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
@@ -104,6 +104,18 @@ usb_vbus: regulator-5v0-usb-vbus {
enable-active-high;
regulator-always-on;
};
+
+ reserved_memory: reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ scp_mem: memory@50000000 {
+ compatible = "shared-dma-pool";
+ reg = <0 0x50000000 0 0x2900000>;
+ no-map;
+ };
+ };
};

&i2c0 {
@@ -600,6 +612,14 @@ pins-low-power-pupd {
};
};

+ scp_pins: scp-default-pins {
+ pins-vreq {
+ pinmux = <PINMUX_GPIO76__FUNC_SCP_VREQ_VAO>;
+ bias-disable;
+ input-enable;
+ };
+ };
+
spi0_pins: spi0-default-pins {
pins-cs-mosi-clk {
pinmux = <PINMUX_GPIO132__FUNC_SPIM0_CSB>,
@@ -643,6 +663,14 @@ &pmic {
interrupts-extended = <&pio 222 IRQ_TYPE_LEVEL_HIGH>;
};

+&scp {
+ status = "okay";
+
+ memory-region = <&scp_mem>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&scp_pins>;
+};
+
&spi0 {
status = "okay";

--
2.35.1