[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 at maquefel.me>
> Sent: Friday, November 13, 2020 17:18
> To: Clark Wang <xiaoning.wang at nxp.com>
> Cc: broonie at kernel.org; festevam at gmail.com; kernel at pengutronix.de;
> linux-arm-kernel at lists.infradead.org; dl-linux-imx <linux-imx at nxp.com>;
> linux-kernel at vger.kernel.org; linux-spi at vger.kernel.org;
> s.hauer at pengutronix.de; shawnguo at kernel.org; Nikita Shubin
> <nikita.shubin at maquefel.me>
> 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 ?