target/linux/ipq806x/patches-4.9/0046-cpufreq-qcom-independent-core-clocks.patch

   1 From patchwork Fri Dec  8 09:42:30 2017
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   5 Subject: [v4,12/12] cpufreq: dt: Reintroduce independent_clocks platform data
   6 From: Sricharan R <sricharan@codeaurora.org>
   7 X-Patchwork-Id: 10102073
   8 Message-Id: <1512726150-7204-13-git-send-email-sricharan@codeaurora.org>
   9 To: mturquette@baylibre.com, sboyd@codeaurora.org,
  10  devicetree@vger.kernel.org, linux-pm@vger.kernel.org,
  11  linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
  12  viresh.kumar@linaro.org, linux-arm-kernel@lists.infradead.org
  13 Cc: sricharan@codeaurora.org
  14 Date: Fri,  8 Dec 2017 15:12:30 +0530
  15
  16 The Platform data was removed earlier by,
  17 'commit eb96924acddc ("cpufreq: dt: Kill platform-data")'
  18 since there were no users at that time.
  19 Now this is required when the each of the cpu clocks
  20 can be scaled independently, which is the case
  21 for krait cores. So reintroduce it.
  22
  23 Signed-off-by: Sricharan R <sricharan@codeaurora.org>
  24 ---
  25  drivers/cpufreq/cpufreq-dt.c | 7 ++++++-
  26  drivers/cpufreq/cpufreq-dt.h | 6 ++++++
  27  2 files changed, 12 insertions(+), 1 deletion(-)
  28
  29 --- a/drivers/cpufreq/cpufreq-dt.c
  30 +++ b/drivers/cpufreq/cpufreq-dt.c
  31 @@ -221,7 +221,10 @@ static int cpufreq_init(struct cpufreq_p
  32         }
  33
  34         if (fallback) {
  35 -               cpumask_setall(policy->cpus);
  36 +               struct cpufreq_dt_platform_data *pd = cpufreq_get_driver_data();
  37 +
  38 +               if (!pd || !pd->independent_clocks)
  39 +                       cpumask_setall(policy->cpus);
  40
  41                 /*
  42                  * OPP tables are initialized only for policy->cpu, do it for
  43 @@ -376,6 +379,8 @@ static int dt_cpufreq_probe(struct platf
  44         if (data && data->have_governor_per_policy)
  45                 dt_cpufreq_driver.flags |= CPUFREQ_HAVE_GOVERNOR_PER_POLICY;
  46
  47 +       dt_cpufreq_driver.driver_data = data;
  48 +
  49         ret = cpufreq_register_driver(&dt_cpufreq_driver);
  50         if (ret)
  51                 dev_err(&pdev->dev, "failed register driver: %d\n", ret);
  52 --- a/drivers/cpufreq/cpufreq-dt.h
  53 +++ b/drivers/cpufreq/cpufreq-dt.h
  54 @@ -13,6 +13,12 @@
  55  #include <linux/types.h>
  56
  57  struct cpufreq_dt_platform_data {
  58 +       /*
  59 +        * True when each CPU has its own clock to control its
  60 +        * frequency, false when all CPUs are controlled by a single
  61 +        * clock.
  62 +        */
  63 +       bool independent_clocks;
  64         bool have_governor_per_policy;
  65  };
  66