[U-Boot] [PATCH] spl: mmc: Add option to set eMMC HW boot partition

[Lukasz Majewski <lukma@denx.de>]

Hi Marek,

> On 9/3/19 5:49 PM, Lukasz Majewski wrote:
> > Hi MÃ¥ns, Marek,
> >   
> >> Marek Vasut <marex@denx.de> writes:
> >>  
> >>> On 9/3/19 4:16 PM, Lukasz Majewski wrote:    
> >>>> From: Mans Rullgard <mans@mansr.com>
> >>>>
> >>>> This change allows setting pre-defined eMMC boot partition for
> >>>> SPL eMMC booting. It is necessary in the case when one wants to
> >>>> boot (through falcon boot) from eMMC after loading SPL from other
> >>>> memory (like SPI-NOR).
> >>>>
> >>>> Signed-off-by: Mans Rullgard <mans@mansr.com>
> >>>> [lukma: Edit the commit message]
> >>>> Signed-off-by: Lukasz Majewski <lukma@denx.de>
> >>>> Acked-by: Andreas Dannenberg <dannenberg@ti.com>    
> >>>
> >>> Would it be better if this came from /chosen node in DT ?    
> >>
> >> This patch was made for an imx28 based board.  Fitting DT support
> >> into SPL on that chip won't be easy.  
> > 
> > Unfortunately, on purpose the DT support for SPL on this board is
> > disabled.
> > 
> > This is the case where the only eligible option is to use
> > OF_PLATDATA, to benefit from DM drivers, but also to keep the size
> > as small as possible.
> > 
> > (Please refer to xea board support patches for more details).  
> 
> Hm, then shall we use platdata ? 

Yes, correct. The OF_PLATDATA allows you to use DM/DTS converted driver
with platform data encoded in the C structures.

For example such patch adds support for OF_PLATDATA to DM/DTS driver:
https://patchwork.ozlabs.org/patch/1148906/

> I don't think that fits common code
> like this either.

Please see above link.


Best regards,

Lukasz Majewski

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