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From:   Jai Luthra <j-luthra@ti.com>
Date:   Fri, 17 Nov 2023 14:58:14 +0530
Subject: [PATCH v2 6/9] arm64: dts: ti: k3-am62x: Add overlays for OV5640
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Message-ID: <20231117-csi_dts-v2-6-bf4312194a6b@ti.com>
References: <20231117-csi_dts-v2-0-bf4312194a6b@ti.com>
In-Reply-To: <20231117-csi_dts-v2-0-bf4312194a6b@ti.com>
To:     Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>, Nishanth Menon <nm@ti.com>,
        Vignesh Raghavendra <vigneshr@ti.com>,
        Tero Kristo <kristo@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>
CC:     <linux-arm-kernel@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>,
        Aradhya Bhatia <a-bhatia1@ti.com>,
        Devarsh Thakkar <devarsht@ti.com>,
        Vaishnav Achath <vaishnav.a@ti.com>,
        Julien Massot <julien.massot@collabora.com>,
        Martyn Welch <martyn.welch@collabora.com>,
        Matthias Schiffer <matthias.schiffer@ew.tq-group.com>,
        Jai Luthra <j-luthra@ti.com>
Precedence: bulk

Three different OV5640 modules are supported using the 15-pin FFC
connector on SK-AM62:
- Digilent PCam 5C
- ALINX AN5641
- TEVI-OV5640-*-RPI

The Digilent and ALINX modules supply a 12Mhz XCLK to the sensor, while
the TEVI module supplies a 24Mhz XCLK, thus requiring a separate
overlay.

These overlays can be used on other boards of the SK-AM62* family that
have a 15/22-pin FFC connector, so we name the overlays with the prefix
k3-am62x-.

Tested-by: Martyn Welch <martyn.welch@collabora.com>
Signed-off-by: Jai Luthra <j-luthra@ti.com>
---
 arch/arm64/boot/dts/ti/Makefile                    | 19 +++++-
 .../arm64/boot/dts/ti/k3-am62x-sk-csi2-ov5640.dtso | 74 ++++++++++++++++++++++
 .../boot/dts/ti/k3-am62x-sk-csi2-tevi-ov5640.dtso  | 74 ++++++++++++++++++++++
 3 files changed, 166 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index c6c7825b4cb2..f957b5f741ff 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -32,6 +32,10 @@ dtb-$(CONFIG_ARCH_K3) += k3-am62a7-sk.dtb
 # Boards with AM62Px SoC
 dtb-$(CONFIG_ARCH_K3) += k3-am62p5-sk.dtb
 
+# Common overlays for SK-AM62* family of boards
+dtb-$(CONFIG_ARCH_K3) += k3-am62x-sk-csi2-ov5640.dtbo
+dtb-$(CONFIG_ARCH_K3) += k3-am62x-sk-csi2-tevi-ov5640.dtbo
+
 # Boards with AM64x SoC
 dtb-$(CONFIG_ARCH_K3) += k3-am642-evm.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am642-phyboard-electra-rdk.dtb
@@ -87,13 +91,26 @@ k3-am625-beagleplay-csi2-ov5640-dtbs := k3-am625-beagleplay.dtb \
 	k3-am625-beagleplay-csi2-ov5640.dtbo
 k3-am625-beagleplay-csi2-tevi-ov5640-dtbs := k3-am625-beagleplay.dtb \
 	k3-am625-beagleplay-csi2-tevi-ov5640.dtbo
+k3-am625-sk-csi2-ov5640-dtbs := k3-am625-sk.dtb \
+	k3-am62x-sk-csi2-ov5640.dtbo
+k3-am625-sk-csi2-tevi-ov5640-dtbs := k3-am625-sk.dtb \
+	k3-am62x-sk-csi2-tevi-ov5640.dtbo
+k3-am62a7-sk-csi2-ov5640-dtbs := k3-am62a7-sk.dtb \
+	k3-am62x-sk-csi2-ov5640.dtbo
+k3-am62a7-sk-csi2-tevi-ov5640-dtbs := k3-am62a7-sk.dtb \
+	k3-am62x-sk-csi2-tevi-ov5640.dtbo
 dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \
-	k3-am625-beagleplay-csi2-tevi-ov5640.dtb
+	k3-am625-beagleplay-csi2-tevi-ov5640.dtb \
+	k3-am625-sk-csi2-ov5640.dtb \
+	k3-am625-sk-csi2-tevi-ov5640.dtb \
+	k3-am62a7-sk-csi2-ov5640.dtb \
+	k3-am62a7-sk-csi2-tevi-ov5640.dtb
 
 # Enable support for device-tree overlays
 DTC_FLAGS_k3-am625-beagleplay += -@
 DTC_FLAGS_k3-am625-sk += -@
 DTC_FLAGS_k3-am62-lp-sk += -@
+DTC_FLAGS_k3-am62a7-sk += -@
 DTC_FLAGS_k3-am6548-iot2050-advanced-m2 += -@
 DTC_FLAGS_k3-j721e-common-proc-board += -@
 DTC_FLAGS_k3-j721s2-common-proc-board += -@
diff --git a/arch/arm64/boot/dts/ti/k3-am62x-sk-csi2-ov5640.dtso b/arch/arm64/boot/dts/ti/k3-am62x-sk-csi2-ov5640.dtso
new file mode 100644
index 000000000000..790340673094
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am62x-sk-csi2-ov5640.dtso
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ALINX AN5641 & Digilent PCam 5C - OV5640 camera module
+ * Copyright (C) 2022 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+&{/} {
+	clk_ov5640_fixed: ov5640-xclk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <12000000>;
+	};
+};
+
+&main_i2c2 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	i2c-switch@71 {
+		compatible = "nxp,pca9543";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		reg = <0x71>;
+
+		/* CAM port */
+		i2c@1 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <1>;
+
+			ov5640: camera@3c {
+				compatible = "ovti,ov5640";
+				reg = <0x3c>;
+
+				clocks = <&clk_ov5640_fixed>;
+				clock-names = "xclk";
+				powerdown-gpios = <&exp1 13 GPIO_ACTIVE_LOW>;
+
+				port {
+					csi2_cam0: endpoint {
+						remote-endpoint = <&csi2rx0_in_sensor>;
+						clock-lanes = <0>;
+						data-lanes = <1 2>;
+					};
+				};
+			};
+		};
+	};
+};
+
+&cdns_csi2rx0 {
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		csi0_port0: port@0 {
+			reg = <0>;
+			status = "okay";
+
+			csi2rx0_in_sensor: endpoint {
+				remote-endpoint = <&csi2_cam0>;
+				bus-type = <4>; /* CSI2 DPHY. */
+				clock-lanes = <0>;
+				data-lanes = <1 2>;
+			};
+		};
+	};
+};
diff --git a/arch/arm64/boot/dts/ti/k3-am62x-sk-csi2-tevi-ov5640.dtso b/arch/arm64/boot/dts/ti/k3-am62x-sk-csi2-tevi-ov5640.dtso
new file mode 100644
index 000000000000..d7772767f49d
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am62x-sk-csi2-tevi-ov5640.dtso
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Technexion TEVI-OV5640-*-RPI - OV5640 camera module
+ * Copyright (C) 2022 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+&{/} {
+	clk_ov5640_fixed: ov5640-xclk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <24000000>;
+	};
+};
+
+&main_i2c2 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	i2c-switch@71 {
+		compatible = "nxp,pca9543";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		reg = <0x71>;
+
+		/* CAM port */
+		i2c@1 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <1>;
+
+			ov5640: camera@3c {
+				compatible = "ovti,ov5640";
+				reg = <0x3c>;
+
+				clocks = <&clk_ov5640_fixed>;
+				clock-names = "xclk";
+				powerdown-gpios = <&exp1 13 GPIO_ACTIVE_LOW>;
+
+				port {
+					csi2_cam0: endpoint {
+						remote-endpoint = <&csi2rx0_in_sensor>;
+						clock-lanes = <0>;
+						data-lanes = <1 2>;
+					};
+				};
+			};
+		};
+	};
+};
+
+&cdns_csi2rx0 {
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		csi0_port0: port@0 {
+			reg = <0>;
+			status = "okay";
+
+			csi2rx0_in_sensor: endpoint {
+				remote-endpoint = <&csi2_cam0>;
+				bus-type = <4>; /* CSI2 DPHY. */
+				clock-lanes = <0>;
+				data-lanes = <1 2>;
+			};
+		};
+	};
+};

-- 
2.42.1