Re: [PATCH] Add initial support for the EVB-KSZ9477 eval board

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Hi Sam,

On Sat, Nov 03, 2018 at 12:31:12AM +0100, Sam Ravnborg wrote:
> On Fri, Nov 02, 2018 at 10:07:43AM +0100, Sascha Hauer wrote:
> > From: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
> > 
> > The EVB-KSZ9477 is an evaluation board for the KSZ9477 ethernet switch.
> > This board is equipped with a atsama5d3 SoC with 256MiB of SDRAM, 256MiB
> > of NAND flash and a SD card slot.
> > 
> > For now only second stage booting is supported with AT91bootstrap as
> > first stage loader.
> Reminds me...
> 
> I have noticed a brown-paper-bug introduced by me that would
> hurt first stage bootloaders.
> But only for at91sam926x boards I think, that this is likely not
> considered.


> +#define at91_sdramc_write(field, value) \
> +	__raw_writel((value), cfg->sdramc + (field))

I prefer using plain __raw_writel rather than creating a new wrapper.
The reason is a series I created that gets rid of these kind of wrappers
in AT91 which decide during compile time on which SoC we are running.
The above is not one of these, but I think doing it without accessors
fits better into the series I created.

Sascha

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