固件类型：自行编译的固件
SDK包名称：Firefly-RK356X_Android11.0_git_20210824
SDK修改内容：rk3568-firefly-aioj.dts中添加了rk628d的设备节点
Log日志：log (2).zip
问题如下图log日志中截取部分：
i2c读取不到rk628d
核心板：core-3568j
行业版：aio-3568j
所驱动芯片：瑞芯微rk628d
步骤：
1.kernel config配置
2.dts配置
修改的dts为rk3568-firefly-aioj.dts
硬件连接如下：
i2c采用ic4（位于mipi_csi中），中断采用tp端子中的int脚，复位采用tp端子中的res脚。
连接如图：（rk628的开发板i2c要单独接出来，采用常供电）
参考连接（rk官方提供的连接方法）：
dts代码如下：其中部分代码参考子rk官方提供的节点配置以及安卓内核中部分其他主板的rk628驱动dts
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
- Copyright (c) 2020 Rockchip Electronics Co., Ltd.
*/
#include “rk3568-firefly-aioj.dtsi”
/*
-
Select one of the three - using single camera xc7160 ----> rk3568-firefly-aioj-cam-8ms1m.dtsi
- using dual camera gc2053/gc2093 ----> rk3568-firefly-aioj-cam-2ms2m.dtsi
- using hdmi-in module rk628d ----> rk3568-firefly-aioj-tf-hdmi-mipi-rk628.dtsi
*/
#include “rk3568-firefly-aioj-cam-8ms1m.dtsi”
//#include “rk3568-firefly-aioj-cam-2ms2m.dtsi”
//#include “rk3568-firefly-aioj-tf-hdmi-mipi-rk628.dtsi”
/ {
model = “AIO-3568J HDMI (Android)”;
compatible = “rockchip,rk3568-firefly-aioj”, “rockchip,rk3568”;
};
&route_hdmi {
status = “okay”;
connect = <&vp0_out_hdmi>;
};
&i2c4{
clock-frequency = <400000>;
status = “okay”;
rk628: rk628@50{
reg = <0x50>;
interrupt-parent = <&gpio3>;
interrupts = <RK_PA3 IRQ_TYPE_LEVEL_HIGH>;
reset-gpios = <&gpio3 RK_PA5 GPIO_ACTIVE_LOW>;
status = "okay";
};
};
#include <arm/rk628.dtsi>
&rk628_combtxphy{
status = “okay”;
};
&rk628_combrxphy{
status = “okay”;
};
&rk628_csi {
status = “okay”;
/** If the hpd output level is inverted on the circuit, * the following configuration needs to be enabled. /
/ hpd-output-inverted; */
plugin-det-gpios = <&gpio0 RK_PD6 GPIO_ACTIVE_HIGH>; //
//power-gpios = <&gpio0 17 GPIO_ACTIVE_HIGH>;
rockchip,camera-module-index = <0>;
rockchip,camera-module-facing = “back”;
rockchip,camera-module-name = “RK628-CSI”;
rockchip,camera-module-lens-name = “NC”;
port {
hdmiin_out0: endpoint {
remote-endpoint = <&mipi_in>;
data-lanes = <1 2 3 4>;
};
};
};
&csi2_dphy_hw {
status = “okay”;
};
&csi2_dphy0 {
status = “okay”;
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
#address-cells = <1>;
#size-cells = <0>;
mipi_in: endpoint@0 {
reg = <0>;
remote-endpoint = <&hdmiin_out0>;
data-lanes = <1 2 3 4>;
};
};
port@1 {
reg = <1>;
#address-cells = <1>;
#size-cells = <0>;
csidphy0_out: endpoint@0 {
reg = <0>;
remote-endpoint = <&isp0_in>;
};
};
};
};
&rkisp {
status = “okay”;
};
&rkisp_mmu {
status = “okay”;
};
&rkisp_vir0 {
status = “okay”;
port {
#address-cells = <1>;
#size-cells = <0>;
isp0_in: endpoint@0 {
reg = <0>;
remote-endpoint = <&csidphy0_out>;
};
};
};
编译结果：
log中i2c读取不到设备，返回错误码6.
已确定：
1.i2c地址设置没有问题，
2.硬件连接没有问题，3568与rk628的i2c相连，rk628供电正常，上电后芯片发热，系统开机是3568会给628d输入一个拉高的边沿脉冲，即供电和置为ok。FPC连接没有问题。
3.考虑过是否是dts中时序的问题，对dts中clock-frequency进行过修改，400000，40000，10000等时序都尝试过，依旧注册不上。
萌新求助 ==
tchip_askquestions
log (2).zip (27.8 KB)
