linux-kernel - Re: [PATCH v1] memory: tegra: Don't invoke Tegra30+ specific memory timing setup on Tegra20

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Message-ID: <b0403eb2-2494-1924-dbe6-7a6019b6364d@nvidia.com>
Date:   Fri, 20 Jul 2018 09:02:04 +0100
From:   Jon Hunter <jonathanh@...dia.com>
To:     Dmitry Osipenko <digetx@...il.com>
CC:     Thierry Reding <thierry.reding@...il.com>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1] memory: tegra: Don't invoke Tegra30+ specific memory
 timing setup on Tegra20


On 19/07/18 16:38, Dmitry Osipenko wrote:
> On Thursday, 19 July 2018 18:30:48 MSK Jon Hunter wrote:
>> On 19/07/18 14:24, Dmitry Osipenko wrote:
>>> This fixes irrelevant "tegra-mc 7000f000.memory-controller: no memory
>>> timings for RAM code 0 registered" warning message during of kernels
>>> boot-up on Tegra20.
>>
>> Looking at the tegra20-emc.txt bindings doc [0], the 'nvidia,ram-code'
>> property is also valid for Tegra20. In fact, I see this warning on the
>> Tegra30 Cardhu because this property is not populated. So I think that
>> this warning is valid and harmless.
>>
>> Cheers
>> Jon
>>
>> [0] Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-emc.txt
> 
> That is the irrelevant binding, the relevant one for this driver is [0]. The 
> warning is valid for T30+, but not for T20.
> 
> [0] Documentation/devicetree/bindings/memory-controllers/nvidia,tegra20-mc.txt

Yes indeed, looks like we never supported this for Tegra20. OK, fine with me
I guess this was introduced during the consolidation of the MC drivers. Can
you add the appropriate fixes tag?

Otherwise ...

Acked-by: Jon Hunter <jonathanh@...dia.com>

Cheers
Jon

-- 
nvpublic