From: Kieran Bingham <kieran.bingham@xxxxxxxxxxxxxxxx>
Describe the FAKRA connector available on Eagle board that allows
connecting GMSL camera modules such as IMI RDACM20 and RDACM21.
Signed-off-by: Kieran Bingham <kieran.bingham@xxxxxxxxxxxxxxxx>
Signed-off-by: Jacopo Mondi <jacopo+renesas@xxxxxxxxxx>
---
arch/arm64/boot/dts/renesas/eagle-gmsl.dtsi | 178 ++++++++++++++++++++
1 file changed, 178 insertions(+)
create mode 100644 arch/arm64/boot/dts/renesas/eagle-gmsl.dtsi
diff --git a/arch/arm64/boot/dts/renesas/eagle-gmsl.dtsi b/arch/arm64/boot/dts/renesas/eagle-gmsl.dtsi
new file mode 100644
index 000000000000..d2e48dc3e820
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/eagle-gmsl.dtsi
@@ -0,0 +1,178 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Device Tree Source (overlay) for the Eagle V3M GMSL connectors
+ *
+ * Copyright (C) 2017 Ideas on Board <kieran.bingham@xxxxxxxxxxxxxxxx>
+ * Copyright (C) 2021 Jacopo Mondi <jacopo+renesas@xxxxxxxxxx>
+ *
+ * This overlay allows you to define GMSL cameras connected to the FAKRA
+ * connectors on the Eagle-V3M (or compatible) board.
+ *
+ * The following cameras are currently supported: RDACM20 and RDACM21.
+ *
+ * The board .dts files that include this select which cameras are in use
+ * by specifying the camera model with:
+ *
+ * #define GMSL_CAMERA_RDACM20
+ * or
+ * #define GMSL_CAMERA_RDACM21
+ *
+ * And which cameras are connected to the board by defining:
+ * #define GMSL_CAMERA_0
+ * #define GMSL_CAMERA_1
+ * #define GMSL_CAMERA_2
+ * #define GMSL_CAMERA_3
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+
+/* Validate the board file settings. */
+#if !defined(GMSL_CAMERA_RDACM20) && !defined(GMSL_CAMERA_RDACM21)
+#error "Camera model should be defined by the board file"
+#endif
+
+#if defined(GMSL_CAMERA_RDACM20) && defined(GMSL_CAMERA_RDACM21)
+#error "A single camera model should be selected"
+#endif
+
+#if !defined(GMSL_CAMERA_0) && !defined(GMSL_CAMERA_1) && \
+ !defined(GMSL_CAMERA_2) && !defined(GMSL_CAMERA_3)
+#error "At least one camera should be selected"
+#endif
+
+#if defined(GMSL_CAMERA_RDACM20)
+#define GMSL_CAMERA_MODEL "imi,rdacm20"
+#elif defined(GMSL_CAMERA_RDACM21)
+#define GMSL_CAMERA_MODEL "imi,rdacm21"
+#endif
+
+&vin0 {
+ status = "okay";
+};
+
+&vin1 {
+ status = "okay";
+};
+
+&vin2 {
+ status = "okay";
+};
+
+&vin3 {
+ status = "okay";
+};
+
+&gmsl {
+ status = "okay";
+
+#if defined(GMSL_CAMERA_RDACM21)
+ maxim,reverse-channel-microvolt = <100000>;
+#endif
+
+ ports {
+#ifdef GMSL_CAMERA_0
+ port@0 {
+ max9286_in0: endpoint {
+ remote-endpoint = <&fakra_con0>;
+ };
+ };
+#endif
+
+#ifdef GMSL_CAMERA_1
+ port@1 {
+ max9286_in1: endpoint{
+ remote-endpoint = <&fakra_con1>;
+ };
+
+ };
+#endif
+
+#ifdef GMSL_CAMERA_2
+ port@2 {
+ max9286_in2: endpoint {
+ remote-endpoint = <&fakra_con2>;
+ };
+
+ };
+#endif
+
+#ifdef GMSL_CAMERA_3
+ port@3 {
+ max9286_in3: endpoint {
+ remote-endpoint = <&fakra_con3>;
+ };
+
+ };
+#endif
+ };
+
+ i2c-mux {
+#ifdef GMSL_CAMERA_0
+ i2c@0 {
+ status = "okay";
+
+ camera@51 {
+ compatible = GMSL_CAMERA_MODEL;
+ reg = <0x51>, <0x61>;
+
+ port {
+ fakra_con0: endpoint {
+ remote-endpoint = <&max9286_in0>;
+ };
+ };
+ };
+ };
+#endif
+
+#ifdef GMSL_CAMERA_1
+ i2c@1 {
+ status = "okay";
+
+ camera@52 {
+ compatible = GMSL_CAMERA_MODEL;
+ reg = <0x52>, <0x62>;
+
+ port {
+ fakra_con1: endpoint {
+ remote-endpoint = <&max9286_in1>;
+ };
+ };
+ };
+ };
+#endif
+
+#ifdef GMSL_CAMERA_2
+ i2c@2 {
+ status = "okay";
+
+ camera@53 {
+ compatible = GMSL_CAMERA_MODEL;
+ reg = <0x53>, <0x63>;
+
+ port {
+ fakra_con2: endpoint {
+ remote-endpoint = <&max9286_in2>;
+ };
+ };
+ };
+ };
+#endif
+
+#ifdef GMSL_CAMERA_3
+ i2c@3 {
+ status = "okay";
+
+ camera@54 {
+ compatible = GMSL_CAMERA_MODEL;
+ reg = <0x54>, <0x64>;
+
+ port {
+ fakra_con3: endpoint {
+ remote-endpoint = <&max9286_in3>;
+ };
+ };
+ };
+ };
+#endif
+ };
+};
--
2.31.1
