Re: [PATCH v3 6/6] tty/serial: atmel: changed the driver to work under at91-usart mfd

From: Radu Pirea
Date: Fri May 25 2018 - 08:16:46 EST




On 05/15/2018 04:14 PM, Richard Genoud wrote:
On 15/05/2018 14:47, Radu Pirea wrote:
On Mon, 2018-05-14 at 12:57 +0200, Richard Genoud wrote:
After your patch, the DMA is not selected anymore:
atmel_usart_serial atmel_usart_serial.0.auto: TX channel not
available, switch to pio
instead of:
atmel_usart fffff200.serial: using dma1chan2 for tx DMA transfers

Fixed.
And the kernel doesn't log anymore on the serial console, despite the
loglevel=8
(after reverting this series, the kernel logs reappears on the serial
console)

Which serial are you using as console?
fffff200.serial (sam9g35-cm)
( stdout-path = "serial0:115200n8"; in the DTS )

With this series applied, all the kernel log goes on the screen.
Without, it goes on the serial debug.

I tested again with archlinux arm and poky-linux4sam release as distros and kernel log goes on the serial debug. Can you give me more details like cmdline?
(tests done on sam9g35)

I will consider the rest of suggestions.
regards,
Richard