RE: [EXT] [PATCH] spi: imx: enable runtime pm support

[Clark Wang]

Hi Nikita,

Sorry for this issue caused by my patch.
Yes, it because I did not add the !CONFIG_PM support when add the runtime pm patch. This may cause the clks cannot be enabled when do not enable CONFIG_PM.
Sascha has fix this issue with the patch:
43b6bf406cd0 spi: imx: fix runtime pm support for !CONFIG_PM

You may try the latest upstream driver again.

I also fix a warning dump issue with CONFIG_PM enabled. It is under reviewed. So that, this driver can work well in both cases.

Thanks!

Best Regards,
Clark Wang

> -----Original Message-----
> From: Nikita Shubin <nikita.shubin@xxxxxxxxxxx>
> Sent: Friday, November 13, 2020 17:18
> To: Clark Wang <xiaoning.wang@xxxxxxx>
> Cc: broonie@xxxxxxxxxx; festevam@xxxxxxxxx; kernel@xxxxxxxxxxxxxx;
> linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; dl-linux-imx <linux-imx@xxxxxxx>;
> linux-kernel@xxxxxxxxxxxxxxx; linux-spi@xxxxxxxxxxxxxxx;
> s.hauer@xxxxxxxxxxxxxx; shawnguo@xxxxxxxxxx; Nikita Shubin
> <nikita.shubin@xxxxxxxxxxx>
> Subject: [EXT] [PATCH] spi: imx: enable runtime pm support
> 
> Caution: EXT Email
> 
> Hello Clark,
> 
> This patch breaks spi-imx on imx7d.
> Toradex Colibri imx7d spi reports with:
> 
>     [    4.258468] inv-mpu6000-spi spi2.0: I/O Error in PIO
>     [    4.264269] inv-mpu6000-spi spi2.0: SPI transfer failed: -110
>     [    4.264305] spi_master spi2: failed to transfer one message from queue
> 
> We are using spi-imx with dma.
> 
> Reverting your patch fixes this issue.
> 
> The baseline commit 951cbbc386ff01b50da4f46387e994e81d9ab431 (tag:
> v5.9.8, stable/linux-5.9.y)
> 
> Could you please give some comments on this issue ?