This is a note to let you know that I've just added the patch titled
intel_pstate: Add support for Baytrail turbo P states
to the 3.13-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
intel_pstate-add-support-for-baytrail-turbo-p-states.patch
and it can be found in the queue-3.13 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 61d8d2abc15e9232c3914c55502b73e559366583 Mon Sep 17 00:00:00 2001
From: Dirk Brandewie <[email protected]>
Date: Wed, 12 Feb 2014 10:01:07 -0800
Subject: intel_pstate: Add support for Baytrail turbo P states
From: Dirk Brandewie <[email protected]>
commit 61d8d2abc15e9232c3914c55502b73e559366583 upstream.
A documentation update exposed the existance of the turbo ratio
register. Update baytrail support to use the turbo range.
Signed-off-by: Dirk Brandewie <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/cpufreq/intel_pstate.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -34,8 +34,10 @@
#define SAMPLE_COUNT 3
-#define BYT_RATIOS 0x66a
-#define BYT_VIDS 0x66b
+#define BYT_RATIOS 0x66a
+#define BYT_VIDS 0x66b
+#define BYT_TURBO_RATIOS 0x66c
+
#define FRAC_BITS 8
#define int_tofp(X) ((int64_t)(X) << FRAC_BITS)
@@ -367,6 +369,13 @@ static int byt_get_max_pstate(void)
return (value >> 16) & 0xFF;
}
+static int byt_get_turbo_pstate(void)
+{
+ u64 value;
+ rdmsrl(BYT_TURBO_RATIOS, value);
+ return value & 0x3F;
+}
+
static void byt_set_pstate(struct cpudata *cpudata, int pstate)
{
u64 val;
@@ -469,7 +478,7 @@ static struct cpu_defaults byt_params =
.funcs = {
.get_max = byt_get_max_pstate,
.get_min = byt_get_min_pstate,
- .get_turbo = byt_get_max_pstate,
+ .get_turbo = byt_get_turbo_pstate,
.set = byt_set_pstate,
.get_vid = byt_get_vid,
},
Patches currently in stable-queue which might be from
[email protected] are
queue-3.13/intel_pstate-add-setting-voltage-value-for-baytrail-p-states.patch
queue-3.13/intel_pstate-add-support-for-baytrail-turbo-p-states.patch
queue-3.13/cpufreq-skip-current-frequency-initialization-for-setpolicy-drivers.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
