How can write the source code "write iic reg have iic slave address"at TX2 R32.2?

Autonomous Machines Jetson & Embedded Systems Jetson TX2
1

How can write the source code "write iic reg have iic slave address"at TX2 R32.2?

It is a device source file.
use “regmap_write” function? how can do this?

2

hello sensor_test,

I don’t understand your request clearly.
did you mean you want to write registers with regmap_write() kernel functions?

3

Hello JerryChang,

Please see the imx390.c file.the have two imx390 sensors.have the 0x1b and 0x1c iic slave address.
How can I write or read the 0x1b imx390 sensor?
How can I write or read the 0x1c imx390 sensor?

imx390_a@1b {
					def-addr = <0x1a>;
					/* Define any required hw resources needed by driver */
					/* ie. clocks, io pins, power sources */
					clocks = <&tegra_car TEGRA186_CLK_EXTPERIPH1>,
							 <&tegra_car TEGRA186_CLK_PLLP_OUT0>;
					clock-names = "extperiph1", "pllp_grtba";
					mclk = "extperiph1";
					nvidia,gmsl-ser-device = <&ser_a>;
					nvidia,gmsl-dser-device = <&dser>;
				};
				imx390_b@1c {
					def-addr = <0x1a>;
					/* Define any required hw resources needed by driver */
					/* ie. clocks, io pins, power sources */
					clocks = <&tegra_car TEGRA186_CLK_EXTPERIPH1>,
							 <&tegra_car TEGRA186_CLK_PLLP_OUT0>;
					clock-names = "extperiph1", "pllp_grtba";
					mclk = "extperiph1";
					nvidia,gmsl-ser-device = <&ser_b>;
					nvidia,gmsl-dser-device = <&dser>;
				};
4

hello sensor_test,

you should also note that, these two imx390 were register at two different device node. (i.e. video0 and video1)
user-space would determine the control settings and both of them sharing the same kernel driver for register writing.
thanks