S32G中的主题 Re: gpio expander in uboot

gpio expander in uboot

Quentin2022 — Mon, 16 Oct 2023 09:52:27 GMT

Hi, nxp team:

Our board has a phy reset pin connected to a gpio expander pin(pcal6524).So how do I take control of this pin in uboot.

Do I need to development the pcal6524 driver in uboot? I don't find pcal6523 driver in uboot.

information:

linux version: bsp35

target board:s32g3

nxf92355 — Wed, 18 Oct 2023 06:49:10 GMT

Hope you are doing well.

There are no driver for pcal6524 in u-boot. i raised a internal ticket for that, I will update here as i got reply from internal team.

Best Regards ,

Tushar

nxf92355 — Thu, 19 Oct 2023 07:05:42 GMT

Current Linux BSP does not include a driver for PCAL6524 in U-Boot. you can make use of the driver that can be found in upstream https://github.com/u-boot/u-boot/blob/master/drivers/gpio/pca953x_gpio.c

Best Regards,

Tushar

Quentin2022 — Fri, 20 Oct 2023 08:26:20 GMT

Hi nxf92355:
very thanks for you.now I can drive pcal6524 in uboot using this driver.

nxf92355 — Fri, 20 Oct 2023 13:04:17 GMT

Okay. Can i close this case,if solved ?

Regards,

Tushar