About MEnge.3

MEnge.3 · 2022-04-07

[ 0.056781] Serial: AMBA PL011 UART driver[ 2.010824] stm32-usart 40010000.serial: interrupt mode for rx (no dma)[ 2.010858] stm32-usart 40010000.serial: interrupt mode for tx (no dma)[ 2.010901] 40010000.serial: ttySTM0 at MMIO 0x40010000 (i...

MEnge.3 · 2022-03-18

I have the following pinctrl entry in my 5.10 device tree to use the USART1 and the serial port fails, due to an incorrect pin configuration for PZ7 AF7.usart1_pins_c: usart1-2 { pins1 { pinmux = <STM32_PINMUX(...

MEnge.3 · 2022-05-06

Yes that problem has been fixed already. I have another case open with I2S2 mclk issues.Thanks.

MEnge.3 · 2022-03-23

I found the problem. For all the GPIOZ pin you need to specify them in the pinctrl_z DT node. Once I changed that the USART1 was detected correctly and initialized.

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We would like to use the USART1 in our design but the device is not available later under /dev/ttySTM. In the kernel log it seems that the device is registered but then the serial0 seems to use ttySTM1 and you do not have that interface available.

Linux 5.10 pinctrl driver fails to configure GPIO port Z pad 7 with AF7 (USART1_TX)

Re: We would like to use the USART1 in our design but the device is not available later under /dev/ttySTM. In the kernel log it seems that the device is registered but then the serial0 seems to use ttySTM1 and you do not have that interface available.

Re: Linux 5.10 pinctrl driver fails to configure GPIO port Z pad 7 with AF7 (USART1_TX)