[U-Boot] [PATCH v2 1/2] spl_spi: Read default speed and mode values from DT

[Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>]

On Tue, Nov 27, 2018 at 9:06 AM Patrick DELAUNAY
<patrick.delaunay@st.com> wrote:
>
> Hi Simon,
>
> > -----Original Message-----
> > From: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
> > Sent: lundi 19 novembre 2018 20:09
> >
> > On 19.11.2018 18:33, Patrick Delaunay wrote:
> > > In case of DT boot, don't read default speed and mode for SPI from
> > > CONFIG_*, instead read from DT node.
> > >
> > > Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
> > > Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
> >
> > I was commenting about code duplication, which is better now, so:
> >
> > Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
> >
> > I do think it would be nice to invert the logic. That way, we could get completely
> > rid of those two CONFIG_SF_DEFAULT settings for DM_SPI_FLASH boards (and
> > eventually for all boards - when's the deadline for that?).
> > But there are other places that still do it like you do here, so it's probably better
> > to change them all at once...
>
> Agree with you.
>
> In fact I hesitate with directly change the header file
>
> #ifdef CONFIG_DM_SPI_FLASH
>         /* In DM mode defaults will be taken from DT */
>         #define CONFIG_SF_DEFAULT_SPEED 0
>         #define CONFIG_SF_DEFAULT_MODE 0
> #endif

This looks correct to me.

> But I am afraid of the potential impacts (define is used in many boards),
> but I think it sould be more cleaner way to force the expected behavior.

Can't we just push this and fix whatever it breaks?

Regards,
Simon