[PATCH 9/9] arm64: dts: broadcom: bcm2712-rpi-5-b: Enable HDMI audio

[Peter Robinson <pbrobinson@gmail.com>]

Enable the DMA4 controller, excluding channel 11 which the VPU
firmware uses for VCHIQ, and hook up HDMI audio to it. The D0
stepping uses different DREQ lines for the HDMI controllers.
DREQ numbers and channel mask match Raspberry Pi downstream.

Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
---
 arch/arm64/boot/dts/broadcom/bcm2712-d-rpi-5-b.dts     |  8 ++++++++
 arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-base.dtsi | 10 ++++++++++
 2 files changed, 18 insertions(+)

diff --git a/arch/arm64/boot/dts/broadcom/bcm2712-d-rpi-5-b.dts b/arch/arm64/boot/dts/broadcom/bcm2712-d-rpi-5-b.dts
index ae4b7c587dbc5..3322862906f62 100644
--- a/arch/arm64/boot/dts/broadcom/bcm2712-d-rpi-5-b.dts
+++ b/arch/arm64/boot/dts/broadcom/bcm2712-d-rpi-5-b.dts
@@ -51,6 +51,14 @@ &pinctrl_aon {
 	reg = <0x7d510700 0x1c>;
 };
 
+&hdmi0 {
+	dmas = <&dma40 12>;
+};
+
+&hdmi1 {
+	dmas = <&dma40 13>;
+};
+
 &uart10 {
 	interrupts = <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;
 };
diff --git a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-base.dtsi b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-base.dtsi
index e5030da60f9e7..3b55840414975 100644
--- a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-base.dtsi
+++ b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-base.dtsi
@@ -117,6 +117,12 @@ &disp_intr {
 	status = "okay";
 };
 
+&dma40 {
+	/* The VPU firmware uses DMA channel 11 for VCHIQ */
+	brcm,dma-channel-mask = <0x07c0>;
+	status = "okay";
+};
+
 &pinctrl {
 	bt_shutdown_default: bt-shutdown-default-state {
 		function = "gpio";
@@ -254,12 +260,16 @@ &hvs {
 &hdmi0 {
 	clocks = <&firmware_clocks 13>, <&firmware_clocks 14>, <&dvp 0>, <&clk_27MHz>;
 	clock-names = "hdmi", "bvb", "audio", "cec";
+	dmas = <&dma40 10>;
+	dma-names = "audio-rx";
 	status = "okay";
 };
 
 &hdmi1 {
 	clocks = <&firmware_clocks 13>, <&firmware_clocks 14>, <&dvp 1>, <&clk_27MHz>;
 	clock-names = "hdmi", "bvb", "audio", "cec";
+	dmas = <&dma40 17>;
+	dma-names = "audio-rx";
 	status = "okay";
 };
 
-- 
2.56.0