[PATCH v3 2/2] arm64: dts: renesas: rzg2l-smarc: Enable CRU, CSI support

[Prabhakar]

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>

Enable CRU, CSI on RZ/G2L SMARC EVK and tie the CSI to OV5645 sensor
using Device Tree overlay. rz-smarc-cru-csi-ov5645.dtsi is created so
that RZ/G2L alike EVKs can make use of it.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
---
setenv bootfile kernel_fdt.itb
tftpboot ${bootfile}
bootm ${fileaddr}#rzg2l-smarc#ov5645

v2->v3
* Moved the gpio.h and rzg2l-pinctrl.h headers to
  r9a07g044l2-smarc-cru-csi-ov5645.dtso

v1->v2
* New patch
---
 arch/arm64/boot/dts/renesas/Makefile          |  1 +
 .../r9a07g044l2-smarc-cru-csi-ov5645.dtso     | 21 +++++
 .../dts/renesas/rz-smarc-cru-csi-ov5645.dtsi  | 80 +++++++++++++++++++
 3 files changed, 102 insertions(+)
 create mode 100644 arch/arm64/boot/dts/renesas/r9a07g044l2-smarc-cru-csi-ov5645.dtso
 create mode 100644 arch/arm64/boot/dts/renesas/rz-smarc-cru-csi-ov5645.dtsi

diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile
index 23b10c03091c..a553d99175cb 100644
--- a/arch/arm64/boot/dts/renesas/Makefile
+++ b/arch/arm64/boot/dts/renesas/Makefile
@@ -79,6 +79,7 @@ dtb-$(CONFIG_ARCH_R9A07G043) += r9a07g043u11-smarc.dtb
 
 dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044c2-smarc.dtb
 dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044l2-smarc.dtb
+dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044l2-smarc-cru-csi-ov5645.dtbo
 
 dtb-$(CONFIG_ARCH_R9A07G054) += r9a07g054l2-smarc.dtb
 
diff --git a/arch/arm64/boot/dts/renesas/r9a07g044l2-smarc-cru-csi-ov5645.dtso b/arch/arm64/boot/dts/renesas/r9a07g044l2-smarc-cru-csi-ov5645.dtso
new file mode 100644
index 000000000000..d834bff9bda2
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r9a07g044l2-smarc-cru-csi-ov5645.dtso
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree overlay for the RZ/G2L SMARC EVK with OV5645 camera
+ * connected to CSI and CRU enabled.
+ *
+ * Copyright (C) 2023 Renesas Electronics Corp.
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
+
+#define OV5645_PARENT_I2C i2c0
+#include "rz-smarc-cru-csi-ov5645.dtsi"
+
+&ov5645 {
+	enable-gpios = <&pinctrl RZG2L_GPIO(2, 0) GPIO_ACTIVE_HIGH>;
+	reset-gpios = <&pinctrl RZG2L_GPIO(40, 2) GPIO_ACTIVE_LOW>;
+};
diff --git a/arch/arm64/boot/dts/renesas/rz-smarc-cru-csi-ov5645.dtsi b/arch/arm64/boot/dts/renesas/rz-smarc-cru-csi-ov5645.dtsi
new file mode 100644
index 000000000000..6efa8958bc36
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/rz-smarc-cru-csi-ov5645.dtsi
@@ -0,0 +1,80 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Common Device Tree for the RZ/G2L SMARC EVK (and alike EVKs) with
+ * OV5645 camera connected to CSI and CRU enabled.
+ *
+ * Copyright (C) 2023 Renesas Electronics Corp.
+ */
+
+&{/} {
+	ov5645_vdddo_1v8: 1p8v {
+		compatible = "regulator-fixed";
+		regulator-name = "camera_vdddo";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-always-on;
+	};
+
+	ov5645_vdda_2v8: 2p8v {
+		compatible = "regulator-fixed";
+		regulator-name = "camera_vdda";
+		regulator-min-microvolt = <2800000>;
+		regulator-max-microvolt = <2800000>;
+		regulator-always-on;
+	};
+
+	ov5645_vddd_1v5: 1p5v {
+		compatible = "regulator-fixed";
+		regulator-name = "camera_vddd";
+		regulator-min-microvolt = <1500000>;
+		regulator-max-microvolt = <1500000>;
+		regulator-always-on;
+	};
+
+	ov5645_fixed_clk: osc25250_clk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <24000000>;
+	};
+};
+
+&cru {
+	status = "okay";
+};
+
+&csi2 {
+	status = "okay";
+
+	ports {
+		port@0 {
+			csi2_in: endpoint {
+				clock-lanes = <0>;
+				data-lanes = <1 2>;
+				remote-endpoint = <&ov5645_ep>;
+			};
+		};
+	};
+};
+
+&OV5645_PARENT_I2C {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	ov5645: camera@3c {
+		compatible = "ovti,ov5645";
+		reg = <0x3c>;
+		clocks = <&ov5645_fixed_clk>;
+		clock-frequency = <24000000>;
+		vdddo-supply = <&ov5645_vdddo_1v8>;
+		vdda-supply = <&ov5645_vdda_2v8>;
+		vddd-supply = <&ov5645_vddd_1v5>;
+
+		port {
+			ov5645_ep: endpoint {
+				clock-lanes = <0>;
+				data-lanes = <1 2>;
+				remote-endpoint = <&csi2_in>;
+			};
+		};
+	};
+};
-- 
2.25.1