Enable support for the SCP co-processor present on MT8192. It is used
as part of the video encoding and decoding processes.
A region of memory is carved out for its use, and remoteproc setup for
communication with the ChromeOS EC.
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@xxxxxxxxxxxxx>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
---
Changes in v4:
- Added this patch
.../boot/dts/mediatek/mt8192-asurada.dtsi | 26 +++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
index 7b89f6e552c5..a5625b3cb317 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
@@ -105,6 +105,12 @@ reserved_memory: reserved-memory {
#size-cells = <2>;
ranges;
+ scp_mem_reserved: scp@50000000 {
+ compatible = "shared-dma-pool";
+ reg = <0 0x50000000 0 0x2900000>;
+ no-map;
+ };
+
wifi_restricted_dma_region: wifi@c0000000 {
compatible = "restricted-dma-pool";
reg = <0 0xc0000000 0 0x4000000>;
@@ -680,6 +686,12 @@ pins-pcie-en-pp3300-wlan {
};
};
+ scp_pins: scp-pins {
+ pins-vreq-vao {
+ pinmux = <PINMUX_GPIO195__FUNC_SCP_VREQ_VAO>;
+ };
+ };
+
spi1_pins: spi1-default-pins {
pins-cs-mosi-clk {
pinmux = <PINMUX_GPIO157__FUNC_SPI1_A_CSB>,
@@ -735,6 +747,20 @@ &pmic {
interrupts-extended = <&pio 214 IRQ_TYPE_LEVEL_HIGH>;
};
+&scp {
+ status = "okay";
+
+ firmware-name = "mediatek/mt8192/scp.img";
+ memory-region = <&scp_mem_reserved>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&scp_pins>;
+
+ cros-ec {
+ compatible = "google,cros-ec-rpmsg";
+ mediatek,rpmsg-name = "cros-ec-rpmsg";
+ };
+};
+
&spi1 {
status = "okay";
--
2.36.1
