linux-kernel - Re: [PATCH RESEND] ARM: dts: keystone-k2*: Increase SPI Flash partition size for U-Boot

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Date:   Mon, 10 Oct 2016 09:01:58 -0700
From:   Santosh Shilimkar <santosh.shilimkar@...cle.com>
To:     Vignesh R <vigneshr@...com>
Cc:     Russell King - ARM Linux <linux@...linux.org.uk>,
        Santosh Shilimkar <ssantosh@...nel.org>,
        devicetree@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH RESEND] ARM: dts: keystone-k2*: Increase SPI Flash
 partition size for U-Boot

Vignesh,

On 10/10/2016 7:31 AM, Russell King - ARM Linux wrote:
> On Mon, Oct 10, 2016 at 07:41:41PM +0530, Vignesh R wrote:
>> U-Boot SPI Boot image is now more than 512KB for Keystone2 devices and
>> cannot fit into existing partition. So, increase the SPI Flash partition
>> for U-Boot to 1MB for all Keystone2 devices.
>>
>> Signed-off-by: Vignesh R <vigneshr@...com>
>> ---
>>
>> This was submitted to v4.9 merge window but was never picked up:
>> https://patchwork.kernel.org/patch/9135023/

Another point is, if you want me to pick your patch, please copy
me next time :-). AFAIK, am seeing this patch in my inbox first time.

>
> I think you need to explain why it's safe to change the layout of the
> flash partitions like this.
>
> - What is this "misc" partition?
>
> - Why is it safe to move the "misc" partition in this way?
>
> - Do users need to do anything with data stored in the "misc" partition
>   when changing kernels?
>
> If the "misc" partition is simply unused space on the flash device, why
> list it in DT?
>
Thanks Russell. Yes, above clarification would be good to get first.