cpufreq: apple-soc: Increase cluster switch timeout to 400us

Apple A11 SoC takes a long time to switch. Maximum switch time
observed is 345us, so increase the cluster switch timeout to 400us
to be safe.

Signed-off-by: Nick Chan <towinchenmi@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

diff --git a/drivers/cpufreq/apple-soc-cpufreq.c b/drivers/cpufreq/apple-soc-cpufreq.c
index b27d261fe5a68343705d549711ab8e244c791b30..94e57f055a5ffa0cd6bcfde6e4d427706762d680 100644 (file)
--- a/drivers/cpufreq/apple-soc-cpufreq.c
+++ b/drivers/cpufreq/apple-soc-cpufreq.c
@@ -53,7 +53,7 @@
 #define APPLE_DVFS_PLL_FACTOR_MULT     GENMASK(31, 16)
 #define APPLE_DVFS_PLL_FACTOR_DIV      GENMASK(15, 0)
 
-#define APPLE_DVFS_TRANSITION_TIMEOUT 100
+#define APPLE_DVFS_TRANSITION_TIMEOUT 400
 
 struct apple_soc_cpufreq_info {
        bool has_ps2;