Hi all:
We use the imx8mn_evk to connect ov5640 camera and the DTS configuration is as follows. We found that although IMX8MN_CLK_CLKO1 was configured for MCLK, but no CLK signal was measured on IMX8MN_CLK_CLKO1. CLK signal is actually output from GPIO1_14.
Why does this happen?
ov5640_mipi_0: ov5640_mipi@3c {
compatible = "ovti,ov5640";
reg = <0x3c>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_csi_pwn>, <&pinctrl_csi_rst>;
clocks = <&clk IMX8MN_CLK_CLKO1>;
clock-names = "xclk";
assigned-clocks = <&clk IMX8MN_CLK_CLKO1>;
assigned-clock-parents = <&clk IMX8MN_CLK_24M>;
assigned-clock-rates = <24000000>;
csi_id = <0>;
powerdown-gpios = <&gpio1 7 GPIO_ACTIVE_HIGH>;
reset-gpios = <&gpio1 6 GPIO_ACTIVE_LOW>;
mclk = <24000000>;
mclk_source = <0>;
mipi_csi;
status = "okay";
port {
ov5640_ep: endpoint {
remote-endpoint = <&mipi1_sensor_ep>;
data-lanes = <1 2>;
clocks-lanes = <0>;
};
};
};
