[PATCH] dm: Add docs to explain how to enable DM_SERIAL for a board

Simon Glass sjg at chromium.org
Tue Mar 15 22:15:22 CET 2022


Hi Fabio,

On Tue, 15 Mar 2022 at 05:25, Fabio Estevam <festevam at gmail.com> wrote:
>
> Hi Simon,
>
> On Tue, Mar 15, 2022 at 2:54 AM Simon Glass <sjg at chromium.org> wrote:
>
> > +For example, on iMX6::
> > +
> > +   lpuart3: serial at 5a090000 {
> > +      compatible = "fsl,imx8qm-lpuart";
>
> I found this part confusing as i.MX6 does not have lpuart.
>
> > +For example, on iMX6, put this in your xxx-u-boot.dtsi file::
> > +
> > +   &pd_dma {
> > +      u-boot,dm-pre-proper;
> > +   };
> > +
> > +   &pd_dma_lpuart3 {
> > +      u-boot,dm-pre-proper;
>
> Same here, these pd_dma and pd_dma_lpuart3 nodes do not exist for i.MX6.

Oh I think I meant iMX8. Would it be OK to just say that in both places?

Regards,
SImon


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