[PATCH] cpufreq: intel_pstate: Broxton support
From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Date: 2016-06-09 22:33:08
Added Broxton cpu model number. Broxton requires core_params to get performance limits via MSRs, but it is an Atom platform, which requires more power optimized algorithm. So the P state selection will use similar algorithm as other Atom platforms. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> --- drivers/cpufreq/intel_pstate.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+)
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index e1b7a5e..8a0e405 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c@@ -1110,6 +1110,26 @@ static struct cpu_defaults knl_params = { }, }; +static struct cpu_defaults bxt_params = { + .pid_policy = { + .sample_rate_ms = 10, + .deadband = 0, + .setpoint = 60, + .p_gain_pct = 14, + .d_gain_pct = 0, + .i_gain_pct = 4, + }, + .funcs = { + .get_max = core_get_max_pstate, + .get_max_physical = core_get_max_pstate_physical, + .get_min = core_get_min_pstate, + .get_turbo = core_get_turbo_pstate, + .get_scaling = core_get_scaling, + .get_val = core_get_val, + .get_target_pstate = get_target_pstate_use_cpu_load, + }, +}; + static void intel_pstate_get_min_max(struct cpudata *cpu, int *min, int *max) { int max_perf = cpu->pstate.turbo_pstate;
@@ -1370,6 +1390,7 @@ static const struct x86_cpu_id intel_pstate_cpu_ids[] = { ICPU(INTEL_FAM6_SKYLAKE_DESKTOP, core_params), ICPU(INTEL_FAM6_BROADWELL_XEON_D, core_params), ICPU(INTEL_FAM6_XEON_PHI_KNL, knl_params), + ICPU(INTEL_FAM6_ATOM_GOLDMONT, bxt_params), {} }; MODULE_DEVICE_TABLE(x86cpu, intel_pstate_cpu_ids);
--
2.5.5