[PATCH v2] arm64: dts: imx8mq: Add DCSS node

[Esben Haabendal]

Add node for iMX8MQ Display Controller Subsystem.

Reviewed-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Signed-off-by: Esben Haabendal <esben@xxxxxxxxxx>
---
This is basically a resend of a patch from 2020 [1], which seems to have
fallen through the cracks.

I did not notice that patch before sending my v1. As of v2, this patch is
identical to the old patch, so I have added the Reviewed-by tag from that.
If that is not proper, please remove it before merging it.

[1] https://lore.kernel.org/all/20201125103909.16548-1-laurentiu.palcu@xxxxxxxxxxx/
---
Changes in v2:
- Moved dcss node under aips4 bus.
- Link to v1: https://patch.msgid.link/20260710-imx8mq-dcss-device-tree-node-v1-1-fc724dfd574e@xxxxxxxxxx

To: Rob Herring <robh@xxxxxxxxxx>
To: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
To: Conor Dooley <conor+dt@xxxxxxxxxx>
To: Frank Li <Frank.Li@xxxxxxx>
To: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
To: Pengutronix Kernel Team <kernel@xxxxxxxxxxxxxx>
To: Fabio Estevam <festevam@xxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: imx@xxxxxxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
 arch/arm64/boot/dts/freescale/imx8mq.dtsi | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
index e60872aeeb49..d75710cdb5b4 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
@@ -1598,6 +1598,29 @@ aips4: bus@32c00000 { /* AIPS4 */
 			#size-cells = <1>;
 			ranges = <0x32c00000 0x32c00000 0x400000>;
 
+			dcss: display-controller@32e00000 {
+				compatible = "nxp,imx8mq-dcss";
+				reg = <0x32e00000 0x2d000>, <0x32e2f000 0x1000>;
+				interrupts = <6>, <8>, <9>;
+				interrupt-names = "ctxld", "ctxld_kick", "vblank";
+				interrupt-parent = <&irqsteer>;
+				clocks = <&clk IMX8MQ_CLK_DISP_APB_ROOT>,
+					 <&clk IMX8MQ_CLK_DISP_AXI_ROOT>,
+					 <&clk IMX8MQ_CLK_DISP_RTRM_ROOT>,
+					 <&clk IMX8MQ_VIDEO2_PLL_OUT>,
+					 <&clk IMX8MQ_CLK_DISP_DTRC>;
+				clock-names = "apb", "axi", "rtrm", "pix", "dtrc";
+				assigned-clocks = <&clk IMX8MQ_CLK_DISP_AXI>,
+						  <&clk IMX8MQ_CLK_DISP_RTRM>,
+						  <&clk IMX8MQ_VIDEO2_PLL1_REF_SEL>;
+				assigned-clock-parents = <&clk IMX8MQ_SYS1_PLL_800M>,
+							 <&clk IMX8MQ_SYS1_PLL_800M>,
+							 <&clk IMX8MQ_CLK_27M>;
+				assigned-clock-rates = <800000000>,
+						       <400000000>;
+				status = "disabled";
+			};
+
 			irqsteer: interrupt-controller@32e2d000 {
 				compatible = "fsl,imx8m-irqsteer", "fsl,imx-irqsteer";
 				reg = <0x32e2d000 0x1000>;

---
base-commit: 8cdeaa50eae8dad34885515f62559ee83e7e8dda
change-id: 20260710-imx8mq-dcss-device-tree-node-9df58de085ea

Best regards,
--  
Esben Haabendal <esben@xxxxxxxxxx>