LP5018: LP5018 LED driver probe issue.

Shubham Dash

Part Number: LP5018
Other Parts Discussed in Thread: LP5024

Tool/software:

Hi,

I am working on the lp5018 led driver I need to build firmware that supports the led driver. I've configured the device tree config as below,

led-controller@50 {
compatible = "ti,lp5018";
reg = <0x50>;
#address-cells = <1>;
#size-cells = <0>;
enable-gpios = <&gpio2 14 1>;

multi-led@1 {
#address-cells = <1>;
#size-cells = <0>;
reg = <0x1>;
color = <LED_COLOR_ID_RGB>;
function = LED_FUNCTION_CHARGING;

led@0 {
reg = <0x0>;
color = <LED_COLOR_ID_RED>;
};

led@1 {
reg = <0x1>;
color = <LED_COLOR_ID_GREEN>;
};

led@2 {
reg = <0x2>;
color = <LED_COLOR_ID_BLUE>;
};
};

multi-led@3 {
#address-cells = <1>;
#size-cells = <0>;
reg = <0x3>, <0x4>, <0x5>;
color = <LED_COLOR_ID_RGB>;
function = LED_FUNCTION_STANDBY;

led@3 {
reg = <0x3>;
color = <LED_COLOR_ID_RED>;
};

led@4 {
reg = <0x4>;
color = <LED_COLOR_ID_GREEN>;
};

led@5 {
reg = <0x5>;
color = <LED_COLOR_ID_BLUE>;
};
};
};

I am able to see the i2c address that the device is connected but I am facing the kernel driver probe failing issue. Please suggest to me what could be the issue.

And please guide how I can operate the led driver through Linux.

Thanks
Shubham

8 months ago

0 Zhiqian Wu 8 months ago

TI__Mastermind 31255 points

Hi,

Sorry for the late reply due to the New Year Holiday. Our expert will reply you today.

0 Jared Zhou 8 months ago

TI__Mastermind 20515 points

Hi Shubham,

Please refer the below link for the Linux driver of LP50xx family:

http://git.ti.com/gitweb/?p=ti-analog-linux-kernel/dmurphy-analog.git;a=commit;h=1480753ee31bb0ca69579ccba804058723901054

BR, Jared

0 Shubham Dash 7 months ago in reply to Jared Zhou

Prodigy 45 points

Hi Jared Zhou

Thanks for your reply I am trying to compile the driver you shared but I guess the driver is not compatible with the latest kernel BSP. I am working on yocto scarthgap kernel v6.6.

Please help with the issue.

Logs I am getting :

error: initialization of 'int (*)(struct i2c_client *)' from incompatible pointer type 'int (*)(struct i2c_client *, const struct i2c_device_id *)' [-Werror=incompatible-pointer-types]
| 746 | .probe = lp50xx_probe,
| | ^~~~~~~~~~~~
| /home/vvdn/project_work/evcu_devc/build/tmp/work-shared/imx91-11x11-lpddr4-evk/kernel-source/drivers/leds/leds-lp50xx.c:746:27: note: (near initialization for 'lp50xx_driver.probe')
| /home/vvdn/project_work/evcu_devc/build/tmp/work-shared/imx91-11x11-lpddr4-evk/kernel-source/drivers/leds/leds-lp50xx.c:747:27: error: initialization of 'void (*)(struct i2c_client *)' from incompatible pointer type 'int (*)(struct i2c_client *)' [-Werror=incompatible-pointer-types]
| 747 | .remove = lp50xx_remove,
| | ^~~~~~~~~~~~~

0 Jared Zhou 7 months ago in reply to Shubham Dash

TI__Mastermind 20515 points

Hi Dash,

I am sorry I am not very familiar with Linux driver. I can help to solve the problem about LED driver, but for Linux driver. I am afraid that I can't help.

BR, Jared

0 Shubham Dash 7 months ago in reply to Jared Zhou

Prodigy 45 points

Hi Jared,

Thanks for your reply!

Ok, no issue can you please share the device tree config for the led driver that would be very helpful.

Also please share the led driver which could support the BSP in yocto kernel v6.6.

Thanks

0 Jared Zhou 7 months ago in reply to Shubham Dash

TI__Mastermind 20515 points

Hi Dash

I am sorry for the Linux driver of LP50xx family, the only thing we can provide is this link. I am sorry that I don't have the configuration of device tree you said.

BR, Jared

0 Shubham Dash 7 months ago in reply to Jared Zhou

Prodigy 45 points

Hi,

No issue, I am having the LP5024 EVM kit so can I use cnnect it to the custom board with I2C lines and initialize the driver to test the evm leds?
Will it work for this purpuse?

0 Zhiqian Wu 7 months ago in reply to Shubham Dash

TI__Mastermind 31255 points

HI, Dash

Our expert will reply you tomorrow.

0 Jared Zhou 7 months ago in reply to Shubham Dash

TI__Mastermind 20515 points

Hi Dash,

Yes, it can work!

BR, Jared

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LP5018: LP5018 LED driver probe issue.