On 24-08-20, 15:59, Jon Hunter wrote:
> Commit 6cc3d0e9a097 ("cpufreq: tegra186: add
> CPUFREQ_NEED_INITIAL_FREQ_CHECK flag") fixed CPUFREQ support for
> Tegra186 but as a consequence the following warnings are now seen on
> boot ...
>
> cpufreq: cpufreq_online: CPU0: Running at unlisted freq: 0 KHz
> cpufreq: cpufreq_online: CPU0: Unlisted initial frequency changed to:
> 2035200 KHz
> cpufreq: cpufreq_online: CPU1: Running at unlisted freq: 0 KHz
> cpufreq: cpufreq_online: CPU1: Unlisted initial frequency changed to:
> 2035200 KHz
> cpufreq: cpufreq_online: CPU2: Running at unlisted freq: 0 KHz
> cpufreq: cpufreq_online: CPU2: Unlisted initial frequency changed to:
> 2035200 KHz
> cpufreq: cpufreq_online: CPU3: Running at unlisted freq: 0 KHz
> cpufreq: cpufreq_online: CPU3: Unlisted initial frequency changed to:
> 2035200 KHz
> cpufreq: cpufreq_online: CPU4: Running at unlisted freq: 0 KHz
> cpufreq: cpufreq_online: CPU4: Unlisted initial frequency changed to:
> 2035200 KHz
> cpufreq: cpufreq_online: CPU5: Running at unlisted freq: 0 KHz
> cpufreq: cpufreq_online: CPU5: Unlisted initial frequency changed to:
> 2035200 KHz
>
> Fix this by adding a 'get' callback for the Tegra186 CPUFREQ driver to
> retrieve the current operating frequency for a given CPU. The 'get'
> callback uses the current 'ndiv' value that is programmed to determine
> that current operating frequency.
>
> Signed-off-by: Jon Hunter <jonath...@nvidia.com>
> ---
> Changes since V1:
> - Moved code into a 'get' callback
>
> drivers/cpufreq/tegra186-cpufreq.c | 30 ++++++++++++++++++++++++++++++
> 1 file changed, 30 insertions(+)
>
> diff --git a/drivers/cpufreq/tegra186-cpufreq.c
> b/drivers/cpufreq/tegra186-cpufreq.c
> index 01e1f58ba422..0d0fcff60765 100644
> --- a/drivers/cpufreq/tegra186-cpufreq.c
> +++ b/drivers/cpufreq/tegra186-cpufreq.c
> @@ -14,6 +14,7 @@
>
> #define EDVD_CORE_VOLT_FREQ(core) (0x20 + (core) * 0x4)
> #define EDVD_CORE_VOLT_FREQ_F_SHIFT 0
> +#define EDVD_CORE_VOLT_FREQ_F_MASK 0xffff
> #define EDVD_CORE_VOLT_FREQ_V_SHIFT 16
>
> struct tegra186_cpufreq_cluster_info {
> @@ -91,10 +92,39 @@ static int tegra186_cpufreq_set_target(struct
> cpufreq_policy *policy,
> return 0;
> }
>
> +static unsigned int tegra186_cpufreq_get(unsigned int cpu)
> +{
> + struct cpufreq_frequency_table *tbl;
> + struct cpufreq_policy *policy;
> + void __iomem *edvd_reg;
> + unsigned int i, freq = 0;
> + u32 ndiv;
> +
> + policy = cpufreq_cpu_get(cpu);
> + if (!policy)
> + return -EINVAL;
This should be return 0;
Applied with that change. Thanks.
--
viresh
