linux-kernel - Re: [PATCH v2 1/3] memory: tegra: Add helper function tegra_get_memory

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Message-ID: <a613dac4-1a7e-54b3-02da-4aedc673ecfb@gmail.com>
Date:   Wed, 30 Sep 2020 10:31:36 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Nicolin Chen <nicoleotsuka@...il.com>
Cc:     thierry.reding@...il.com, joro@...tes.org, krzk@...nel.org,
        vdumpa@...dia.com, jonathanh@...dia.com,
        linux-tegra@...r.kernel.org, iommu@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/3] memory: tegra: Add helper function
 tegra_get_memory_controller

30.09.2020 09:38, Nicolin Chen пишет:
> On Wed, Sep 30, 2020 at 09:32:20AM +0300, Dmitry Osipenko wrote:
>> 30.09.2020 08:44, Nicolin Chen пишет:
>>> On Wed, Sep 30, 2020 at 08:12:10AM +0300, Dmitry Osipenko wrote:
>>>> 30.09.2020 03:30, Nicolin Chen пишет:
>>>> ...
>>>>>  int tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate);
>>>>>  unsigned int tegra_mc_get_emem_device_count(struct tegra_mc *mc);
>>>>> +struct tegra_mc *tegra_get_memory_controller(void);
>>>>>  
>>>>>  #endif /* __SOC_TEGRA_MC_H__ */
>>>>>
>>>>
>>>> This will conflict with the tegra20-devfreq driver, you should change it
>>>> as well.
>>>
>>> Will remove that in v3.
>>>
>>> Thanks
>>>
>>
>> Please also consider to add a resource-managed variant, similar to what
>> I did here:
>>
>> https://github.com/grate-driver/linux/commit/2105e7664063772d72fefe9696bdab0b688b9de2
>>
>> I was going to use it in the next iteration of the memory interconnect
>> series.
>>
>> But now it also will be good if you could add the devm variant to yours
>> SMMU patchset since you're already about to touch the tegra20-devfreq
>> driver. I'll then rebase my patches on top of yours patch.
> 
> Just saw this reply. Yea, I think this'd be better. Thanks
> 

Please don't forget to add a stub for !MC as well since devfreq drivers
use COMPILE_TEST and don't directly depend on the MC driver.