On 05/16/2014 03:07 AM, Viresh Kumar wrote:
> Tegra had always been switching to intermediate frequency (pll_p_clk) since
> ever. CPUFreq core has better support for handling notifications for these
> frequencies and so we can adapt Tegra's driver to it.
> diff --git a/drivers/cpufreq/tegra-cpufreq.c b/drivers/cpufreq/tegra-cpufreq.c
> +static int
> +tegra_target_intermediate(struct cpufreq_policy *policy, unsigned int
> frequency)
> +{
> + return clk_set_parent(cpu_clk, pll_p_clk);
> +}
I think you also need to move the following code from
tegra_cpu_clk_set_rate() to the start of tegra_target_intermediate().
Otherwise, pll_x will turn off, which judging by the comment in
tegra_cpu_clk_set_rate(), shouldn't be allowed to happen:
/*
* Take an extra reference to the main pll so it doesn't turn
* off when we move the cpu off of it
*/
clk_prepare_enable(pll_x_clk);
I'll go try this version anyway in a minute...
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
