linux-kernel - Re: [PATCH v2 1/6] clocksource/drivers/tegra: Restore timer rate on Tegra210

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Message-ID: <17eac2c4-41fa-a616-83e9-fa18a9e1483d@nvidia.com>
Date:   Wed, 12 Jun 2019 09:30:02 +0100
From:   Jon Hunter <jonathanh@...dia.com>
To:     Dmitry Osipenko <digetx@...il.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Joseph Lo <josephl@...dia.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Peter De Schrijver <pdeschrijver@...dia.com>
CC:     <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/6] clocksource/drivers/tegra: Restore timer rate on
 Tegra210


On 10/06/2019 17:43, Dmitry Osipenko wrote:
> The clocksource rate is initialized only for the first per-CPU clocksource
> and then that rate shall be replicated for the rest of clocksource's
> because they are initialized manually in the code.
> 
> Fixes: 3be2a85a0b61 ("Support per-CPU timers on all Tegra's")
> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> ---
>  drivers/clocksource/timer-tegra.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/clocksource/timer-tegra.c b/drivers/clocksource/timer-tegra.c
> index 9406855781ff..830c66e2d927 100644
> --- a/drivers/clocksource/timer-tegra.c
> +++ b/drivers/clocksource/timer-tegra.c
> @@ -277,6 +277,8 @@ static int __init tegra_init_timer(struct device_node *np, bool tegra20,
>  		 */
>  		if (tegra20)
>  			cpu_to->of_clk.rate = 1000000;
> +		else
> +			cpu_to->of_clk.rate = timer_of_rate(to);
>  
>  		cpu_to = per_cpu_ptr(&tegra_to, cpu);
>  		cpu_to->of_base.base = timer_reg_base + base;

Thanks. This fixes a boot regression we are seeing on -next with
Tegra210 (introduced by the commit referenced above). So ...

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

Cheers
Jon

-- 
nvpublic