target/linux/mvebu/patches-6.1/000-cpufreq-armada-8k-add-ap807-support.patch

   1 From 8eec6e740b564ec5e1da59ab7070b89aa23c9973 Mon Sep 17 00:00:00 2001
   2 From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
   3 Date: Fri, 16 Jun 2023 12:41:30 +0100
   4 Subject: [PATCH] cpufreq: armada-8k: add ap807 support
   5
   6 Add support for the Armada AP807 die to armada-8k. This uses a
   7 different compatible for the CPU clock which needs to be added to
   8 the cpufreq driver.
   9
  10 This commit takes a different approach to the WindRiver patch
  11 "cpufreq: armada: enable ap807-cpu-clk" in that rather than calling
  12 of_find_compatible_node() for each compatible, we use a table of
  13 IDs instead.
  14
  15 Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
  16 Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
  17 ---
  18  drivers/cpufreq/armada-8k-cpufreq.c | 16 +++++++++-------
  19  1 file changed, 9 insertions(+), 7 deletions(-)
  20
  21 --- a/drivers/cpufreq/armada-8k-cpufreq.c
  22 +++ b/drivers/cpufreq/armada-8k-cpufreq.c
  23 @@ -21,6 +21,13 @@
  24  #include <linux/pm_opp.h>
  25  #include <linux/slab.h>
  26
  27 +static const struct of_device_id __maybe_unused armada_8k_cpufreq_of_match[] = {
  28 +       { .compatible = "marvell,ap806-cpu-clock" },
  29 +       { .compatible = "marvell,ap807-cpu-clock" },
  30 +       { },
  31 +};
  32 +MODULE_DEVICE_TABLE(of, armada_8k_cpufreq_of_match);
  33 +
  34  /*
  35   * Setup the opps list with the divider for the max frequency, that
  36   * will be filled at runtime.
  37 @@ -127,7 +134,8 @@ static int __init armada_8k_cpufreq_init
  38         struct device_node *node;
  39         struct cpumask cpus;
  40
  41 -       node = of_find_compatible_node(NULL, NULL, "marvell,ap806-cpu-clock");
  42 +       node = of_find_matching_node_and_match(NULL, armada_8k_cpufreq_of_match,
  43 +                                              NULL);
  44         if (!node || !of_device_is_available(node)) {
  45                 of_node_put(node);
  46                 return -ENODEV;
  47 @@ -204,12 +212,6 @@ static void __exit armada_8k_cpufreq_exi
  48  }
  49  module_exit(armada_8k_cpufreq_exit);
  50
  51 -static const struct of_device_id __maybe_unused armada_8k_cpufreq_of_match[] = {
  52 -       { .compatible = "marvell,ap806-cpu-clock" },
  53 -       { },
  54 -};
  55 -MODULE_DEVICE_TABLE(of, armada_8k_cpufreq_of_match);
  56 -
  57  MODULE_AUTHOR("Gregory Clement <gregory.clement@bootlin.com>");
  58  MODULE_DESCRIPTION("Armada 8K cpufreq driver");
  59  MODULE_LICENSE("GPL");