Re: [PATCH v3] ARM: dts: ti/omap: gta04: fix pm issues caused by spi module

[Roger Quadros]

On 04/12/2024 19:41, Andreas Kemnade wrote:
> Despite CM_IDLEST1_CORE and CM_FCLKEN1_CORE behaving normal,
> disabling SPI leads to messages like when suspending:
> Powerdomain (core_pwrdm) didn't enter target state 0
> and according to /sys/kernel/debug/pm_debug/count off state is not
> entered. That was not connected to SPI during the discussion
> of disabling SPI. See:
> https://lore.kernel.org/linux-omap/20230122100852.32ae082c@aktux/
> 
> The reason is that SPI is per default in slave mode. Linux driver
> will turn it to master per default. It slave mode, the powerdomain seems to
> be kept active if active chip select input is sensed.
> 
> Fix that by explicitly disabling the SPI3 pins which used to be muxed by
> the bootloader since they are available on an optionally fitted header
> which would require dtb overlays anyways.
> 
> Fixes: a622310f7f01 ("ARM: dts: gta04: fix excess dma channel usage")
> CC: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Andreas Kemnade <andreas@xxxxxxxxxxxx>

Reviewed-by: Roger Quadros <rogerq@xxxxxxxxxx>