linux-kernel - [PATCH v2 4/4] arm64: dts: imx8ulp: Add CSI and ISI Nodes

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Message-Id: <20250822-csi2_imx8ulp-v2-4-26a444394965@nxp.com>
Date: Fri, 22 Aug 2025 18:50:15 +0800
From: Guoniu Zhou <guoniu.zhou@....com>
To: Rui Miguel Silva <rmfrfs@...il.com>, 
 Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 Martin Kepplinger <martink@...teo.de>, Purism Kernel Team <kernel@...i.sm>, 
 Mauro Carvalho Chehab <mchehab@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, Philipp Zabel <p.zabel@...gutronix.de>, 
 Frank Li <Frank.Li@....com>
Cc: linux-media@...r.kernel.org, devicetree@...r.kernel.org, 
 imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, Guoniu Zhou <guoniu.zhou@....com>
Subject: [PATCH v2 4/4] arm64: dts: imx8ulp: Add CSI and ISI Nodes

The CSI-2 in the i.MX8ULP is almost identical to the version present
in the i.MX8QXP/QM and is routed to the ISI. Add both the ISI and CSI
nodes and mark them as disabled by default since capture is dependent
on an attached camera.

Reviewed-by: Frank Li <Frank.Li@....com>
Signed-off-by: Guoniu Zhou <guoniu.zhou@....com>
---
 arch/arm64/boot/dts/freescale/imx8ulp.dtsi | 67 ++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8ulp.dtsi b/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
index 13b01f3aa2a4950c37e72e04f6bfb5995dc19178..7981f7dc62f5dfb2dff051e2d91bde6a2498ac13 100644
--- a/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
@@ -7,6 +7,7 @@
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/power/imx8ulp-power.h>
+#include <dt-bindings/reset/imx8ulp-pcc-reset.h>
 #include <dt-bindings/thermal/thermal.h>
 
 #include "imx8ulp-pinfunc.h"
@@ -842,6 +843,72 @@ spdif: spdif@...b0000 {
 				dma-names = "rx", "tx";
 				status = "disabled";
 			};
+
+			isi: isi@...c0000 {
+				compatible = "fsl,imx8ulp-isi";
+				reg = <0x2dac0000 0x10000>;
+				interrupts = <GIC_SPI 119 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&pcc5 IMX8ULP_CLK_ISI>,
+					 <&cgc2 IMX8ULP_CLK_LPAV_AXI_DIV>;
+				clock-names = "axi", "apb";
+				power-domains = <&scmi_devpd IMX8ULP_PD_ISI>;
+				status = "disabled";
+
+				ports {
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					port@0 {
+						reg = <0>;
+						isi_in: endpoint {
+							remote-endpoint = <&mipi_csi_out>;
+						};
+					};
+				};
+			};
+
+			mipi_csi: csi@...f0000 {
+				compatible = "fsl,imx8ulp-mipi-csi2", "fsl,imx8qxp-mipi-csi2";
+				reg = <0x2daf0000 0x10000>,
+				      <0x2dad0000 0x10000>;
+				clocks = <&pcc5 IMX8ULP_CLK_CSI>,
+					 <&pcc5 IMX8ULP_CLK_CSI_CLK_ESC>,
+					 <&pcc5 IMX8ULP_CLK_CSI_CLK_UI>,
+					 <&pcc5 IMX8ULP_CLK_CSI_REGS>;
+				clock-names = "core", "esc", "ui", "pclk";
+				assigned-clocks = <&pcc5 IMX8ULP_CLK_CSI>,
+						  <&pcc5 IMX8ULP_CLK_CSI_CLK_ESC>,
+						  <&pcc5 IMX8ULP_CLK_CSI_CLK_UI>,
+						  <&pcc5 IMX8ULP_CLK_CSI_REGS>;
+				assigned-clock-parents = <&cgc2 IMX8ULP_CLK_PLL4_PFD1_DIV1>,
+							 <&cgc2 IMX8ULP_CLK_PLL4_PFD1_DIV2>,
+							 <&cgc2 IMX8ULP_CLK_PLL4_PFD0_DIV1>;
+				assigned-clock-rates = <200000000>,
+						       <80000000>,
+						       <100000000>,
+						       <79200000>;
+				power-domains = <&scmi_devpd IMX8ULP_PD_MIPI_CSI>;
+				resets = <&pcc5 PCC5_CSI_SWRST>,
+					 <&pcc5 PCC5_CSI_REGS_SWRST>;
+				status = "disabled";
+
+				ports {
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					port@0 {
+						reg = <0>;
+					};
+
+					port@1 {
+						reg = <1>;
+
+						mipi_csi_out: endpoint {
+							remote-endpoint = <&isi_in>;
+						};
+					};
+				};
+			};
 		};
 
 		gpiod: gpio@...00000 {

-- 
2.34.1