Re: [PATCH v2] powerpc/setup_64: Set cache-line-size based on cache-block-size
From: Michael Ellerman
Date: Thu Apr 16 2020 - 07:43:36 EST
Chris Packham <Chris.Packham@xxxxxxxxxxxxxxxxxxx> writes:
> Hi All,
>
> On Wed, 2020-03-25 at 16:18 +1300, Chris Packham wrote:
>> If {i,d}-cache-block-size is set and {i,d}-cache-line-size is not,
>> use
>> the block-size value for both. Per the devicetree spec cache-line-
>> size
>> is only needed if it differs from the block size.
>>
>> Signed-off-by: Chris Packham <chris.packham@xxxxxxxxxxxxxxxxxxx>
>> ---
>> It looks as though the bsizep = lsizep is not required per the spec
>> but it's
>> probably safer to retain it.
>>
>> Changes in v2:
>> - Scott pointed out that u-boot should be filling in the cache
>> properties
>> (which it does). But it does not specify a cache-line-size because
>> it
>> provides a cache-block-size and the spec says you don't have to if
>> they are
>> the same. So the error is in the parsing not in the devicetree
>> itself.
>>
>
> Ping? This thread went kind of quiet.
I replied in the other thread:
https://lore.kernel.org/linuxppc-dev/87369xx99u.fsf@xxxxxxxxxxxxxxxxxx/
But then the merge window happened which is a busy time.
What I'd really like is a v3 that incorporates the info I wrote in the
other thread and a Fixes tag.
If you feel like doing that, that would be great. Otherwise I'll do it
tomorrow.
cheers