AGX Xavier use i2c5(dp_aux_ch0_i2c)

I had used i2c5(dp_aux_ch0_i2c) (pin:F51 F52) connecting an i2c device(lm75b) for HW configuration.

The device(i2c_lm75b) can be loaded properly,but when I try to open and read the lm75b device,it shows the i2c error message:

[  103.052844] tegra-i2c 31b0000.i2c: pio timed out addr: 0x48 tlen:28 rlen:4
[  103.052992] tegra-i2c 31b0000.i2c: --- register dump for debugging ----
[  103.053120] tegra-i2c 31b0000.i2c: I2C_CNFG - 0x22c00
[  103.053221] tegra-i2c 31b0000.i2c: I2C_PACKET_TRANSFER_STATUS - 0x10001
[  103.053329] tegra-i2c 31b0000.i2c: I2C_FIFO_CONTROL - 0x0
[  103.053436] tegra-i2c 31b0000.i2c: I2C_FIFO_STATUS - 0x800080
[  103.053527] tegra-i2c 31b0000.i2c: I2C_MST_FIFO_CONTROL - 0x70000
[  103.053629] tegra-i2c 31b0000.i2c: I2C_MST_FIFO_STATUS - 0x7c0000
[  103.053727] tegra-i2c 31b0000.i2c: I2C_MST_PACKET_TRANSFER_CNT - 0x0
[  103.053844] tegra-i2c 31b0000.i2c: I2C_INT_MASK - 0x7d
[  103.053930] tegra-i2c 31b0000.i2c: I2C_INT_STATUS - 0x2
[  103.054015] tegra-i2c 31b0000.i2c: i2c transfer timed out addr: 0x48

My device tree is configured as follows:

/ {
host1x {
    status = "okay";
    i2c@31b0000{
            status = "okay";
            i2c_lm75b@48 {
                compatible = "i2c_lm75b";
                reg = <0x48>;
            };
        };
    };
};

I tried below in device tree:

/ {
    host1x {
        status = "ok";
        dpaux@155c0000 {
            compatible = "nvidia,tegra194-dpaux-padctl";
            status = "okay";
            pinctrl-names = "default";
            pinctrl-0 = <&dpaux0_default>;
            dpaux0_default: pinmux@0 {
                dpaux0_pins {
                    pins = "dpaux-0";
                    function = "i2c";
                };
            };
        };

        i2c@31b0000{
            status = "okay";
            pinctrl-names = "default";
            pinctrl-0 = <&dpaux0_default>;
            i2c_lm75b@48 {
                compatible = "i2c_lm75b";
                reg = <0x48>;
            };
        };
    };
};

Unfortunately,this time, the device(i2c_lm75b) cannot be loaded properly(I can’t find the i2c_lm75b device in the “/dev” directory),and it doesn’t work too.

I want to use i2c5(dp_aux_ch0_i2c) as i2c,how to set up i2c5(dp_aux_ch0_i2c) to make it work normally.
How do I check the configuration information of I2C5 to make sure that I2C5 is set to i2c mode.

Thanks.

Is anyone paying attention to this question?
Or, i2c5(dp_aux_ch0_i2c) cannot be used as an I2C bus.

Could you read the DPAUX_HYBRID_PADCTL_0 to confirm.

sudo devmem2 0x155c0124 b