[U-Boot] [PATCH] spi: add "jedec,spi-nor" to spi_flash_std_ids

[Vignesh R]

On Tuesday 08 August 2017 10:27 AM, Chris Packham wrote:
> "jedec,spi-nor" is used by Linux for many boards with spi flash. In fact
> according to the binding documentation this must be included for any SPI
> NOR flash that can be identified by the JEDEC READ ID opcode (0x9F).
> Make device trees more portable between Linux an U-Boot by supporting
> "jedec,spi-nor" in addition to the U-Boot specific "spi-flash".
> 
> Signed-off-by: Chris Packham <judge.packham at gmail.com>
> ---

+1

Use of U-Boot specific compatible "spi-flash" has caused quite a bit of
confusions and also problems while syncing U-Boot and kernel DTs. IMO,
its better if we could probe JEDEC SPI NOR flashes based on generic
"jedec,spi-nor" compatible as well like Linux.

> This fixes my issues with the spi speed selection on db-88f6820-amc. I
> didn't find anything in the commit message from the initial
> implementation saying that "jedec,spi-nor" was omitted intentionally so
> I've settled on this instead of updating armada-385-amc.dts.
> 
> If there is a good reason not to make this change I'm happy to submit a patch
> that just updates armada-385-amc.dts.>
>  drivers/mtd/spi/sf_probe.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/mtd/spi/sf_probe.c b/drivers/mtd/spi/sf_probe.c
> index 7b296378d2be..1953ec3cb748 100644
> --- a/drivers/mtd/spi/sf_probe.c
> +++ b/drivers/mtd/spi/sf_probe.c
> @@ -164,6 +164,7 @@ static const struct dm_spi_flash_ops spi_flash_std_ops = {
>  
>  static const struct udevice_id spi_flash_std_ids[] = {
>  	{ .compatible = "spi-flash" },
> +	{ .compatible = "jedec,spi-nor" },
>  	{ }
>  };
>  
> 

-- 
Regards
Vignesh