[PATCH v2] spi: imx: keep dma request disabled before dma transfer setup

[Fabio Estevam]

On Mon, Oct 27, 2025 at 8:04 AM <carlos.song at nxp.com> wrote:
>
> From: Robin Gong <yibin.gong at nxp.com>
>
> Due to a hardware limitation on SDMA event enable (ENBLn), the DMA request
> must remain disabled until the DMA transfer setup is complete.
>
> Refer SDMA 2.6.28 Channel Enable RAM (SDMAARMx_CHNENBLn) section:
>
> "
> It is thus essential for the Arm platform to program them before any DMA
> request is triggered to the SDMA, otherwise an unpredictable combination
> of channels may be started.
> "
>
> SDMA hardware configuration is postponed to transfer phase, so enabling
> the DMA request too early may cause unpredictable channel activation.
> Then keep dma request disabled before dma transfer setup.
>
> Signed-off-by: Carlos Song <carlos.song at nxp.com>
> Signed-off-by: Robin Gong <yibin.gong at nxp.com>

Should this contain a Fixes tag?