sunxi: add csi video support for nanopi-neo-air

add dtc configuration that declare CSI connection with ov5640

Signed-off-by: Michel Promonet <michel.promonet@free.fr>
Link: https://github.com/openwrt/openwrt/pull/15967
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

diff --git a/target/linux/sunxi/patches-6.6/451-sunxi-add-csi-video-support-for-nanopi-neo-air.patch b/target/linux/sunxi/patches-6.6/451-sunxi-add-csi-video-support-for-nanopi-neo-air.patch
new file mode 100644 (file)
index 0000000..c17d28c
--- /dev/null
+++ b/target/linux/sunxi/patches-6.6/451-sunxi-add-csi-video-support-for-nanopi-neo-air.patch
@@ -0,0 +1,107 @@
+From 4c3a3af679bd59660ac80889b560bddaf475ba81 Mon Sep 17 00:00:00 2001
+From: Michel Promonet <michel.promonet@free.fr>
+Date: Sun, 21 Jul 2024 19:04:19 +0200
+Subject: [PATCH] sunxi: add csi video support for nanopi-neo-air
+
+---
+ .../dts/allwinner/sun8i-h3-nanopi-neo-air.dts | 85 +++++++++++++++++++
+ 1 file changed, 85 insertions(+)
+
+--- a/arch/arm/boot/dts/allwinner/sun8i-h3-nanopi-neo-air.dts
++++ b/arch/arm/boot/dts/allwinner/sun8i-h3-nanopi-neo-air.dts
+@@ -77,6 +77,39 @@
+               compatible = "mmc-pwrseq-simple";
+               reset-gpios = <&r_pio 0 7 GPIO_ACTIVE_LOW>; /* PL7 */
+       };
++
++        cam_xclk: cam-xclk {
++                #clock-cells = <0>;
++                compatible = "fixed-clock";
++                clock-frequency = <24000000>;
++                clock-output-names = "cam-xclk";
++        };
++
++        reg_cam_avdd: cam-avdd {
++                compatible = "regulator-fixed";
++                regulator-name = "cam-avdd";
++                regulator-min-microvolt = <2800000>;
++                regulator-max-microvolt = <2800000>;
++                vin-supply = <&reg_vcc3v3>;
++        };
++
++        reg_cam_dovdd: cam-dovdd {
++                compatible = "regulator-fixed";
++                regulator-name = "cam-dovdd";
++                regulator-min-microvolt = <1800000>;
++                regulator-max-microvolt = <1800000>;
++                vin-supply = <&reg_vcc3v3>;
++        };
++
++        reg_cam_dvdd: cam-dvdd {
++                compatible = "regulator-fixed";
++                regulator-name = "cam-dvdd";
++                regulator-min-microvolt = <1500000>;
++                regulator-max-microvolt = <1500000>;
++                vin-supply = <&reg_vcc3v3>;
++        };
++
++
+ };
+ 
+ &mmc0 {
+@@ -141,3 +174,55 @@
+       /* USB VBUS is always on */
+       status = "okay";
+ };
++
++&csi {
++    status = "okay";
++
++    port {
++        #address-cells = <1>;
++        #size-cells = <0>;
++
++        /* Parallel bus endpoint */
++        csi_from_ov5640: endpoint {
++            remote-endpoint = <&ov5640_to_csi>;
++            bus-width = <8>;
++            data-shift = <2>;
++            hsync-active = <1>; /* Active high */
++            vsync-active = <0>; /* Active low */
++            data-active = <1>;  /* Active high */
++            pclk-sample = <1>;  /* Rising */
++        };
++    };
++};
++
++&i2c2 {
++   status = "okay";
++
++   ov5640: camera@3c {
++        compatible = "ovti,ov5640";
++        reg = <0x3c>;
++        clocks = <&cam_xclk>;
++        clock-names = "xclk";
++
++        reset-gpios = <&pio 4 14 GPIO_ACTIVE_LOW>;
++        powerdown-gpios = <&pio 4 15 GPIO_ACTIVE_HIGH>;
++        AVDD-supply = <&reg_cam_avdd>;
++        DOVDD-supply = <&reg_cam_dovdd>;
++        DVDD-supply = <&reg_cam_dvdd>;
++
++        port {
++            ov5640_to_csi: endpoint {
++                remote-endpoint = <&csi_from_ov5640>;
++                bus-width = <8>;
++                data-shift = <2>;
++                hsync-active = <1>; /* Active high */
++                vsync-active = <0>; /* Active low */
++                data-active = <1>;  /* Active high */
++                pclk-sample = <1>;  /* Rising */
++            };
++        };
++    };
++};
++&i2c2_pins {
++   bias-pull-up;
++};