linux-kernel - Re: [PATCH v2 1/4] ARM: exynos: clear L310_AUX_CTRL_NS_LOCKDOWN in default l2c_aux

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Message-ID: <1cf0722a-df3a-33af-3317-c48eeb5a5842@collabora.com>
Date:   Tue, 1 Sep 2020 18:00:08 +0100
From:   Guillaume Tucker <guillaume.tucker@...labora.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>,
        Russell King <linux@...linux.org.uk>
Cc:     Kukjin Kim <kgene@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        kernel@...labora.com, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        "linux-samsung-soc@...r.kernel.org" 
        <linux-samsung-soc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/4] ARM: exynos: clear L310_AUX_CTRL_NS_LOCKDOWN in
 default l2c_aux_val

On 01/09/2020 16:25, Krzysztof Kozlowski wrote:
> On Tue, 1 Sep 2020 at 16:42, Guillaume Tucker
> <guillaume.tucker@...labora.com> wrote:
>>
>> On 01/09/2020 14:51, Krzysztof Kozlowski wrote:
>>> On Tue, 1 Sep 2020 at 15:45, Krzysztof Kozlowski <krzk@...nel.org> wrote:
>>>>
>>>> On Tue, 1 Sep 2020 at 15:34, Guillaume Tucker
>>>> <guillaume.tucker@...labora.com> wrote:
>>>>>
>>>>> Hi Krzysztof, Russell,
>>>>>
>>>>> On 10/08/2020 13:22, Guillaume Tucker wrote:
>>>>>> The L310_AUX_CTRL_NS_LOCKDOWN flag is set during the L2C enable
>>>>>> sequence.  There is no need to set it in the default register value,
>>>>>> this was done before support for it was implemented in the code.  It
>>>>>> is not set in the hardware initial value either.
>>>>>>
>>>>>> Clean this up by removing this flag from the default l2c_aux_val, and
>>>>>> add it to the l2c_aux_mask to print an alert message if it was already
>>>>>> set before the kernel initialisation.
>>>>>>
>>>>>> Signed-off-by: Guillaume Tucker <guillaume.tucker@...labora.com>
>>>>>> ---
>>>>>>
>>>>>> Notes:
>>>>>>     v2: fix flag name L310_AUX_CTRL_NS_LOCKDOWN
>>>>>>
>>>>>>  arch/arm/mach-exynos/exynos.c | 4 ++--
>>>>>>  1 file changed, 2 insertions(+), 2 deletions(-)
>>>>>
>>>>> I believe this v2 series has addressed all previous comments and
>>>>> you were waiting for the 5.9 merge window to end.  The patches
>>>>> all still apply cleanly on v5.9-rc3.  Do you want me to resend
>>>>> the series anyway or is there anything else needed at this point?
>>>>>
>>>>> Maybe one thing that wasn't completely clear in v1 was whether
>>>>> patch 2/4 was the right approach.  I've explained the reason
>>>>> behind it but didn't get a final reply from Russell[1].
>>>>
>>>> I am sorry, my bad. I already applied this one and 3/4 (dts).
>>>> Apparently I forgot to reply with confirmation and Patchwork did not
>>>> notify you for some reason.
>>
>> No problem, I see them in linux-next now.  Thanks!
>>
>>>> Patch 2/4 does not look like one for me so I would need ack from
>>>> Russell to take. Did you submit it to the ARM patches queue?
>>
>> I've CC-ed linux-arm-kernel@...ts.infradead.org on the whole
>> series.  Did you mean anything else by the ARM patches queue?
> 
> Unless anything changed, so far all ARM-core related patches had to be
> submitted to Russell's system. I didn't submit anything for 3 years so
> maybe something changed...
> https://www.arm.linux.org.uk/developer/patches/

Ah yes, thanks.  I hadn't visited that website for ages...  The
patch 2/4 is there now:

  https://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=9007/1

Best wishes,
Guillaume