Other Parts Discussed in Thread: TCA6424
Tool/software:
HI TI
can't set TCA6424 CSI_GPIO0 to 1
device tree:
include <dt-bindings/gpio/gpio.h>
&{/} {
clk_imx728_fixed: imx728-xclk {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <24000000>;
};
};
&main_i2c2 {
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
i2c-switch@71 {
compatible = "nxp,pca9543";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x71>;
/* CAM port */
i2c@1 {
#address-cells = <1>;
#size-cells = <0>;
reg = <1>;
imx728: camera@1d {
compatible = "sony,imx728";
reg = <0x1d>;
clocks = <&clk_imx728_fixed>;
clock-names = "xclk";
reset-gpios = <&exp1 15 GPIO_ACTIVE_HIGH>; //CSI_GPIO0
port {
csi2_cam0: endpoint {
remote-endpoint = <&csi2rx0_in_sensor>;
link-frequencies = /bits/ 64 <456000000>;
clock-lanes = <0>;
data-lanes = <1 2>;
};
};
};
};
};
};
//driver code
static int imx728_power_on(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct imx728 *imx728 = to_imx728(sd);
int ret;
ret = regulator_bulk_enable(IMX728_NUM_SUPPLIES,
imx728->supplies);
if (ret) {
dev_err(dev, "%s: failed to enable regulators\n",
__func__);
return ret;
}
ret = clk_prepare_enable(imx728->xclk);
if (ret) {
dev_err(dev, "%s: failed to enable clock\n",
__func__);
goto reg_off;
}
gpiod_set_value_cansleep(imx728->reset_gpio, 1); // set csi_gpio0 high
usleep_range(IMX728_XCLR_MIN_DELAY_US,
IMX728_XCLR_MIN_DELAY_US + IMX728_XCLR_DELAY_RANGE_US);
return 0;
reg_off:
regulator_bulk_disable(IMX728_NUM_SUPPLIES, imx728->supplies);
return ret;
}
