msm: acpuclock-krait: Add voltage boost mode
Add support to bump up or down the voltage via sysfs.
# echo 1 > /sys/module/acpuclock_krait/parameters/boost
enables the boost and
# echo 0 > /sys/module/acpuclock_krait/parameters/boost
disables the boost. Boost mode is enabled by default for fast and
nominal devices because those devices could be at the boundaries
of the characterization thresholds and exhibit CPU/L1 errors.
Change-Id: If0dd4ed949188debbb55f82f07004b57548164f6
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>
diff --git a/arch/arm/mach-msm/acpuclock-8627.c b/arch/arm/mach-msm/acpuclock-8627.c
index 4ae8753..9458ea4 100644
--- a/arch/arm/mach-msm/acpuclock-8627.c
+++ b/arch/arm/mach-msm/acpuclock-8627.c
@@ -126,9 +126,9 @@
};
static struct pvs_table pvs_tables[NUM_PVS] __initdata = {
- [PVS_SLOW] = { acpu_freq_tbl, sizeof(acpu_freq_tbl) },
- [PVS_NOMINAL] = { acpu_freq_tbl, sizeof(acpu_freq_tbl) },
- [PVS_FAST] = { acpu_freq_tbl, sizeof(acpu_freq_tbl) },
+ [PVS_SLOW] = { acpu_freq_tbl, sizeof(acpu_freq_tbl), 0 },
+ [PVS_NOMINAL] = { acpu_freq_tbl, sizeof(acpu_freq_tbl), 25000 },
+ [PVS_FAST] = { acpu_freq_tbl, sizeof(acpu_freq_tbl), 25000 },
};
static struct acpuclk_krait_params acpuclk_8627_params __initdata = {