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项目-泰山派相机

庄晓栋2025/12/26大约 4 分钟

项目-泰山派相机

点亮mipi屏幕

i2c

GP7101.pdf

i2c转pwm #todo

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i2c地址实际是7位 + 1位读写位

  • 写操作时，使用 0xB0。
  • 读操作时，使用 0xB1（只改变最低位）
1011 0000 = 0xB0

因此GP7101的实际I2C地址如下

0101 1000 = 0x58

目录kernel/arch/arm64/boot/dts/rockchip/tspi-rk3566-dsi-v10.dtsi

&i2c1 {
    status = "okay"; // 状态为"okay"，表示此节点是可用和配置正确的

// 板载背光驱动电路
    GP7101@58 {
        compatible = "gp7101-backlight";
        reg = <0x58>;
        max-brightness-levels = <255>;     // 背光亮度的最大级别是255
        default-brightness-level = <100>;  // 默认的背光亮度级别是100
    };
};

归档

移植ov8858摄像头

kconfig

buildroot kconfig

这个是泰山派的预选配置

#include "audio.config"
#include "audio_gst.config"
#include "base.config"
#include "base_extra.config"
#include "benchmark.config"
#include "bt.config"
#include "camera.config"
#include "camera_gst.config"
#include "debug.config"
#include "debug2.config"
#include "weston.config"
#include "gpu.config"
#include "network.config"
#include "ntfs.config"
#include "video_mpp.config"
#include "video_gst.config"
#include "video_gst_rtsp.config"
#include "powermanager.config"
#include "rk356x_arm64.config"
#include "test.config"
#include "wifi.config"
BR2_KERNEL_MIRROR="https://mirror.bjtu.edu.cn/kernel/"
BR2_GNU_MIRROR="http://mirrors.nju.edu.cn/gnu/"
BR2_LUAROCKS_MIRROR="https://luarocks.cn"
BR2_CPAN_MIRROR="http://mirrors.nju.edu.cn/CPAN/"
BR2_PACKAGE_RKWIFIBT_AP6212A1=y
BR2_PACKAGE_RKWIFIBT_BTUART="ttyS1"
BR2_PACKAGE_RKNPU2=y
BR2_PACKAGE_NFS_UTILS=y
BR2_PACKAGE_OPENCV3=y
BR2_PACKAGE_OPENCV3_LIB_STITCHING=y
BR2_PACKAGE_OPENCV3_LIB_SUPERRES=y
BR2_PACKAGE_OPENCV3_LIB_TS=y
BR2_PACKAGE_OPENCV3_LIB_VIDEOSTAB=y
BR2_PACKAGE_TSLIB=y
BR2_PACKAGE_PCRE2=y
BR2_PACKAGE_PCRE2_16=y

kernel kconfig

#选中预选的配置
source buildroot/build/envsetup.sh
# 所有配置项的目录
#/home/shelton/Workspaces/source/sdk/rockchip/rk3566_tspi/tspi_linux_sdk_repo_20240131/buildroot/configs

# 进入图形化配置
make menuconfig
# 65 rockchip_rk3566_defconfig

#保存配置
make savedefconfig

kernel的 kconfig 会加载默认的配置项rockchip_linux_defconfig

# kconfig的目录为
# tspi_linux_sdk_repo_20240131/kernel/arch/Kconfig
source "arch/$(SRCARCH)/Kconfig"

# rockchip_linux_defconfig的目录为
# tspi_linux_sdk_repo_20240131/kernel/arch/arm64/configs/rockchip_linux_defconfig

开启OV5695驱动编译选项

在 rockchip_linux_defconfig 中添加 CONFIG_VIDEO_OV8858=y

# CONFIG_MEDIA_SUBDRV_AUTOSELECT is not set
CONFIG_VIDEO_OV5695=y
#...
CONFIG_VIDEO_OV8858=y

在 tspi_linux_sdk_repo_20240131/kernel/arch 中的 Makefile的这个目标就生效了

obj-$(CONFIG_VIDEO_OV8858)	+= ov8858.o

修改设备树

/home/shelton/Workspaces/source/sdk/rockchip/rk3566_tspi/tspi_linux_sdk_repo_20240131/kernel/arch/arm64/boot/dts/rockchip

ov5695的设备树 tspi-rk3566-csi-v10.dtsi

读手册

Rockchip_Driver_Guide_VI_CN_v1.0.8.pdf

OV8858COB_(rev 2A)_DS_2.0_Chippack.pdf

驱动源码

/home/shelton/Workspaces/source/sdk/rockchip/rk3566_tspi/tspi_linux_sdk_repo_20240131/kernel/drivers/media/i2c/ov8858.c

mipi协议

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dphy 多个lane共用一个时钟
cphy 每个lane拥有独立的时钟

./camera_engine_rkaiq/tests/rkisp_demo/demo/rkisp_demo.cpp

/home/shelton/Workspaces/source/sdk/rockchip/rk3566_tspi/tspi_linux_sdk_repo_20240131/external/camera_engine_rkaiq/iqfiles/isp21

这是一个真实、对称、可验证的硬件连接

Sensor → CSI-2 DPHY → ISP 的数据通路

[ov8858] ──⇄── [csi2_dphy0] ──⇄── [rkisp_vir0]
              (in/out endpoints)

remote-endpoint 的指向如上图

//摄像头D-PHY接口
&csi2_dphy0 {
	status = "okay";
	/*
	 * dphy0 only used for full mode,
	 * full mode and split mode are mutually exclusive
	 */
	ports {
		#address-cells = <1>;
		#size-cells = <0>;

		port@0 {
			reg = <0>;
			#address-cells = <1>;
			#size-cells = <0>;

			dphy0_in: endpoint@1 {
				reg = <1>;
				remote-endpoint = <&ov8858_out>;
				data-lanes = <1 2 3 4>;
			};
		};

		port@1 {
			reg = <1>;
			#address-cells = <1>;
			#size-cells = <0>;

			dphy0_out: endpoint@1 {
				reg = <1>;
				remote-endpoint = <&isp0_in>;
			};
		};
	};
};



//图像处理接口
&rkisp_vir0 {
	status = "okay";

	port {
		#address-cells = <1>;
		#size-cells = <0>;

		isp0_in: endpoint@0 {
			reg = <0>;
			remote-endpoint = <&dphy0_out>;
		};
	};
};




&i2c4 {
	/* i2c4 sda conflict with camera pwdn */
	status = "okay";
	ov8858: ov8858@36 {
		status = "okay";
        // 需要与驱动中的匹配字符串一致
		compatible = "ovti,ov8858";
        // sensor I2C设备地址，7位
		reg = <0x36>;
        // sensor mclk源配置
		clocks = <&cru CLK_CIF_OUT>;
		clock-names = "xvclk";
        //sensor mclk pinctl设置
		pinctrl-names = "default";
		pinctrl-0 = <&cif_clk>;
        //sensor 相关电源域使能
		power-domains = <&power RK3568_PD_VI>;
        // reset管脚分配及有效电平
        reset-gpios = <&gpio4 RK_PB5 GPIO_ACTIVE_HIGH>;
        // powerdown管脚分配及有效电平
		pwdn-gpios = <&gpio4 RK_PB4 GPIO_ACTIVE_HIGH>;
        // gpio组管脚分配及有效电平
		power-gpios = <&gpio0 RK_PB0 GPIO_ACTIVE_HIGH>;
        // 模组编号，该编号不要重复
		rockchip,camera-module-index = <0>;
        // 模组朝向，有"back"和"front"
		rockchip,camera-module-facing = "back";
        // 模组名
        rockchip,camera-module-name = "SLD-S10-M258-V1";
        // lens名
		rockchip,camera-module-lens-name = "DL820B-D";
		port {
			ov8858_out: endpoint {
                // csi2 dphy端的port名
				remote-endpoint = <&dphy0_in>; 
                // csi2 dphy lane数，2lane为 <1 2>, 4lane为 <1 2 3 4>
				data-lanes = <1 2 3 4>;
			};
		};
	};
};
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