linux-kernel - Re: [PATCH v1 3/5] ARM: tegra: Create tegra20-cpufreq device on Tegra30

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Message-ID: <65532de7-2768-0d99-33a9-5b43cfbf510c@nvidia.com>
Date:   Wed, 17 Oct 2018 10:54:30 +0100
From:   Jon Hunter <jonathanh@...dia.com>
To:     Dmitry Osipenko <digetx@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Peter De Schrijver <pdeschrijver@...dia.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
CC:     <linux-pm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 3/5] ARM: tegra: Create tegra20-cpufreq device on
 Tegra30


On 17/10/2018 09:49, Jon Hunter wrote:
> 
> On 30/08/2018 20:43, Dmitry Osipenko wrote:
>> Tegra20-cpufreq driver require a platform device in order to be loaded,
>> instantiate a simple platform device for the driver during of the machines
>> late initialization. Driver now supports Tegra30 SoC's, hence create the
>> device on Tegra30 machines.
>>
>> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
>> ---
>>  arch/arm/mach-tegra/tegra.c | 4 ++++
>>  1 file changed, 4 insertions(+)
>>
>> diff --git a/arch/arm/mach-tegra/tegra.c b/arch/arm/mach-tegra/tegra.c
>> index 67d8ae60ac67..b559e22eab76 100644
>> --- a/arch/arm/mach-tegra/tegra.c
>> +++ b/arch/arm/mach-tegra/tegra.c
>> @@ -111,6 +111,10 @@ static void __init tegra_dt_init_late(void)
>>  	if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) &&
>>  	    of_machine_is_compatible("nvidia,tegra20"))
>>  		platform_device_register_simple("tegra20-cpufreq", -1, NULL, 0);
>> +
>> +	if (IS_ENABLED(CONFIG_ARCH_TEGRA_3x_SOC) &&
>> +	    of_machine_is_compatible("nvidia,tegra30"))
>> +		platform_device_register_simple("tegra20-cpufreq", -1, NULL, 0);
>>  }
>>  
>>  static const char * const tegra_dt_board_compat[] = {
> 
> Not sure why you would do this if now the driver only works with DT. Am
> I missing something?

Actually, not sure why we just don't move this into the actual driver
itself like we have for tegra124.

Cheers
Jon

-- 
nvpublic