RV1103 sensor上电 pwdn不能拉高和拉低

[复制链接] · 发表于 2024-9-11 18:48:22

我们在点亮新camera sensor时，配置了avdd dvdd clk；但是pwdn配置时，发现不能正常操作，使用万用表测量pwdn引脚没有电压。
下面是给sensor上电的代码

static int __sc3336_power_on(struct sc3336 *sc3336)

{

        int ret;

        u32 delay_us;

        struct device *dev = &sc3336->client->dev;



        if (!IS_ERR_OR_NULL(sc3336->pins_default)) {

                ret = pinctrl_select_state(sc3336->pinctrl,

                                           sc3336->pins_default);

                if (ret < 0)

                        dev_err(dev, "could not set pins\n");

        }

        #if 1

        ret = clk_set_rate(sc3336->xvclk, sc3336->cur_mode->xvclk_freq);

        if (ret < 0)

                dev_warn(dev, "Failed to set xvclk rate (%dHz)\n", sc3336->cur_mode->xvclk_freq);

        if (clk_get_rate(sc3336->xvclk) != sc3336->cur_mode->xvclk_freq)

                dev_warn(dev, "xvclk mismatched, modes are based on %dHz\n",

                         sc3336->cur_mode->xvclk_freq);

        ret = clk_prepare_enable(sc3336->xvclk);

        if (ret < 0) {

                dev_err(dev, "Failed to enable xvclk\n");

                return ret;

        }

        #endif

        if (sc3336->is_thunderboot)

                return 0;

        #if 0

        if (!IS_ERR(sc3336->reset_gpio))

                gpiod_set_value_cansleep(sc3336->reset_gpio, 0);

        #endif

        usleep_range(50, 100);



        ret = regulator_bulk_enable(SC3336_NUM_SUPPLIES, sc3336->supplies);

        if (ret < 0) {

                dev_err(dev, "Failed to enable regulators\n");

                goto disable_clk;

        }

        #if 0

        if (!IS_ERR(sc3336->reset_gpio))

                gpiod_set_value_cansleep(sc3336->reset_gpio, 1);

        #endif

        usleep_range(50, 100);

#if 1

        if (!IS_ERR(sc3336->pwdn_gpio))

        {

                gpiod_set_value_cansleep(sc3336->pwdn_gpio, 0);

                printk("WENJIE sc3336->pwdn_gpio set 0\n");

        }

#endif

        if (!IS_ERR(sc3336->reset_gpio))

                usleep_range(6000, 8000);

        else

                usleep_range(12000, 16000);

#if 1

        if (!IS_ERR(sc3336->pwdn_gpio))

        {

                gpiod_set_value_cansleep(sc3336->pwdn_gpio, 1);

                printk("WENJIE sc3336->pwdn_gpio set 1\n");

        }

#endif

        if (!IS_ERR(sc3336->pwdn_gpio))

        {

                gpiod_set_value_cansleep(sc3336->pwdn_gpio, 0);

                printk("WENJIE sc3336->pwdn_gpio set 0\n");

        }

        /* 8192 cycles prior to first SCCB transaction */

        delay_us = sc3336_cal_delay(8192, sc3336);

        usleep_range(delay_us, delay_us * 2);



        return 0;



disable_clk:

        clk_disable_unprepare(sc3336->xvclk);



        return ret;

}
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帮忙分析一下，应该如何正确的配置pwdn
上电时序图如附件所示，
设备树代码节选如下所示，配置了gpio1_c7为高电平，但是测量不到电压

&i2c4 {



status = "okay";



clock-frequency = <40000>;



pinctrl-names = "default";



pinctrl-0 = <&i2c4m2_xfer>;







sc3336: sc3336@21 {



compatible = "smartsens,sc3336";



status = "okay";



reg = <0x21>;



clocks = <&cru MCLK_REF_MIPI0>;



clock-names = "xvclk";



pwdn-gpios = <&gpio1 RK_PC7 1>;



pinctrl-names = "default";



pinctrl-0 = <&mipi_refclk_out0>;



rockchip,camera-module-index = <0>;



rockchip,camera-module-facing = "back";



rockchip,camera-module-name = "CMK-OT2119-PC1";



rockchip,camera-module-lens-name = "30IRC-F16";



port {



sc3336_out: endpoint {



remote-endpoint = <&csi_dphy_input0>;



data-lanes = <1 2>;



};



};



};};



&pinctrl {spi0 {spi0m0_clk: spi0m0-clk {rockchip,pins = <1 RK_PC1 4 &pcfg_pull_none>;};spi0m0_mosi: spi0m0-mosi {rockchip,pins = <1 RK_PC2 6 &pcfg_pull_none>;};spi0m0_miso: spi0m0-miso {rockchip,pins = <1 RK_PC3 6 &pcfg_pull_none>;};spi0m0_cs0: spi0m0-cs0 {rockchip,pins = <1 RK_PC0 4 &pcfg_pull_none>;};};



    gpio1-pc7 {        gpio1_pc7:gpio1-pc7 {            rockchip,pins = <1 RK_PC7 RK_FUNC_GPIO &pcfg_pull_none>;    };};};











复制代码

RV1103 sensor上电 pwdn不能拉高和拉低

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