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    Subject[PATCH v3 4/5] arm64: dts: renesas: eagle: Add GMSL .dtsi
    Date
    From: Kieran Bingham <kieran.bingham@ideasonboard.com>

    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@ideasonboard.com>
    Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
    ---
    arch/arm64/boot/dts/renesas/eagle-gmsl.dtsi | 186 ++++++++++++++++++++
    1 file changed, 186 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..1836bca1e8b2
    --- /dev/null
    +++ b/arch/arm64/boot/dts/renesas/eagle-gmsl.dtsi
    @@ -0,0 +1,186 @@
    +// SPDX-License-Identifier: GPL-2.0+
    +/*
    + * Device Tree Source (overlay) for the Eagle V3M GMSL connectors
    + *
    + * Copyright (C) 2017 Ideas on Board <kieran.bingham@ideasonboard.com>
    + * Copyright (C) 2021 Jacopo Mondi <jacopo+renesas@jmondi.org>
    + *
    + * 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:
    + * "imi,rdacm20"
    + * "imi,rdacm21"
    + */
    +
    +#include <dt-bindings/gpio/gpio.h>
    +
    +/*
    + * Select which cameras are in use:
    + * #define EAGLE_CAMERA0_RDACM20
    + * #define EAGLE_CAMERA0_RDACM21
    + *
    + * The two camera modules are configured with different image formats
    + * and cannot be mixed.
    + */
    +#define EAGLE_CAMERA0_RDACM21
    +#define EAGLE_CAMERA1_RDACM21
    +#define EAGLE_CAMERA2_RDACM21
    +#define EAGLE_CAMERA3_RDACM21
    +
    +/* Set the compatible string based on the camera model. */
    +#if defined(EAGLE_CAMERA0_RDACM21) || defined(EAGLE_CAMERA1_RDACM21) || \
    + defined(EAGLE_CAMERA2_RDACM21) || defined(EAGLE_CAMERA3_RDACM21)
    +#define EAGLE_CAMERA_MODEL "imi,rdacm21"
    +#define EAGLE_USE_RDACM21
    +#elif defined(EAGLE_CAMERA0_RDACM20) || defined(EAGLE_CAMERA1_RDACM20) || \
    + defined(EAGLE_CAMERA2_RDACM20) || defined(EAGLE_CAMERA3_RDACM20)
    +#define EAGLE_CAMERA_MODEL "imi,rdacm20"
    +#define EAGLE_USE_RDACM20
    +#endif
    +
    +/* Define which cameras are available. */
    +#if defined(EAGLE_CAMERA0_RDACM21) || defined(EAGLE_CAMERA0_RDACM20)
    +#define EAGLE_USE_CAMERA_0
    +#endif
    +
    +#if defined(EAGLE_CAMERA1_RDACM21) || defined(EAGLE_CAMERA1_RDACM20)
    +#define EAGLE_USE_CAMERA_1
    +#endif
    +
    +#if defined(EAGLE_CAMERA2_RDACM21) || defined(EAGLE_CAMERA2_RDACM20)
    +#define EAGLE_USE_CAMERA_2
    +#endif
    +
    +#if defined(EAGLE_CAMERA3_RDACM21) || defined(EAGLE_CAMERA3_RDACM20)
    +#define EAGLE_USE_CAMERA_3
    +#endif
    +
    +/* Define the endpoint links. */
    +#ifdef EAGLE_USE_CAMERA_0
    +&max9286_in0 {
    + remote-endpoint = <&fakra_con0>;
    +};
    +#endif
    +
    +#ifdef EAGLE_USE_CAMERA_1
    +&max9286_in1 {
    + remote-endpoint = <&fakra_con1>;
    +};
    +#endif
    +
    +#ifdef EAGLE_USE_CAMERA_2
    +&max9286_in2 {
    + remote-endpoint = <&fakra_con2>;
    +};
    +#endif
    +
    +#ifdef EAGLE_USE_CAMERA_3
    +&max9286_in3 {
    + remote-endpoint = <&fakra_con3>;
    +};
    +#endif
    +
    +/* Populate the GMSL i2c-mux bus with camera nodes. */
    +#if defined(EAGLE_USE_RDACM21) || defined(EAGLE_USE_RDACM20)
    +
    +#ifdef EAGLE_USE_CAMERA_0
    +&vin0 {
    + status = "okay";
    +};
    +#endif
    +
    +#ifdef EAGLE_USE_CAMERA_1
    +&vin1 {
    + status = "okay";
    +};
    +#endif
    +
    +#ifdef EAGLE_USE_CAMERA_2
    +&vin2 {
    + status = "okay";
    +};
    +#endif
    +
    +#ifdef EAGLE_USE_CAMERA_3
    +&vin3 {
    + status = "okay";
    +};
    +#endif
    +
    +&gmsl {
    +
    + status = "okay";
    + maxim,reverse-channel-microvolt = <100000>;
    +
    + i2c-mux {
    +#ifdef EAGLE_USE_CAMERA_0
    + i2c@0 {
    + status = "okay";
    +
    + camera@51 {
    + compatible = EAGLE_CAMERA_MODEL;
    + reg = <0x51>, <0x61>;
    +
    + port {
    + fakra_con0: endpoint {
    + remote-endpoint = <&max9286_in0>;
    + };
    + };
    + };
    + };
    +#endif
    +
    +#ifdef EAGLE_USE_CAMERA_1
    + i2c@1 {
    + status = "okay";
    +
    + camera@52 {
    + compatible = EAGLE_CAMERA_MODEL;
    + reg = <0x52>, <0x62>;
    +
    + port {
    + fakra_con1: endpoint {
    + remote-endpoint = <&max9286_in1>;
    + };
    + };
    + };
    + };
    +#endif
    +
    +#ifdef EAGLE_USE_CAMERA_2
    + i2c@2 {
    + status = "okay";
    +
    + camera@53 {
    + compatible = EAGLE_CAMERA_MODEL;
    + reg = <0x53>, <0x63>;
    +
    + port {
    + fakra_con2: endpoint {
    + remote-endpoint = <&max9286_in2>;
    + };
    + };
    + };
    + };
    +#endif
    +
    +#ifdef EAGLE_USE_CAMERA_3
    + i2c@3 {
    + status = "okay";
    +
    + camera@54 {
    + compatible = EAGLE_CAMERA_MODEL;
    + reg = <0x54>, <0x64>;
    +
    + port {
    + fakra_con3: endpoint {
    + remote-endpoint = <&max9286_in3>;
    + };
    + };
    + };
    + };
    +#endif
    + };
    +};
    +#endif
    --
    2.31.1
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