diff options
| author | Patrick Rudolph <patrick.rudolph@9elements.com> | 2021-02-16 11:52:38 +0100 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2021-02-20 09:02:00 +0000 |
| commit | e9b0830422206a9c11ff4e83420e385353c3ee8a (patch) | |
| tree | b958d3c339820ab7d227d5303480d81bb8434d88 /src | |
| parent | e0c2c06ba17278e15ff805cbf75a6d5fc5ad474b (diff) | |
soc/intel/cannonlake: Add devicetree setting to disable turbo
Introduce a new flag to disable turbo called 'cpu_turbo_disable'.
Keep the default and enable turbo on all platforms.
Change-Id: Ia23ce4d589b5ecc5515474eea52a40788ae3d3b5
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50797
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Felix Singer <felixsinger@posteo.net>
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/intel/cannonlake/chip.h | 3 | ||||
| -rw-r--r-- | src/soc/intel/cannonlake/cpu.c | 8 |
2 files changed, 9 insertions, 2 deletions
diff --git a/src/soc/intel/cannonlake/chip.h b/src/soc/intel/cannonlake/chip.h index 15592d54fa..f9f761b5db 100644 --- a/src/soc/intel/cannonlake/chip.h +++ b/src/soc/intel/cannonlake/chip.h @@ -439,6 +439,9 @@ struct soc_intel_cannonlake_config { struct i915_gpu_panel_config panel_cfg; struct i915_gpu_controller_info gfx; + + /* Disable CPU Turbo in IA32_MISC_ENABLE */ + bool cpu_turbo_disable; }; typedef struct soc_intel_cannonlake_config config_t; diff --git a/src/soc/intel/cannonlake/cpu.c b/src/soc/intel/cannonlake/cpu.c index 8b845c004c..2520559cdc 100644 --- a/src/soc/intel/cannonlake/cpu.c +++ b/src/soc/intel/cannonlake/cpu.c @@ -91,6 +91,8 @@ static void configure_c_states(void) /* All CPUs including BSP will run the following function. */ void soc_core_init(struct device *cpu) { + config_t *cfg = config_of_soc(); + /* Clear out pending MCEs */ /* TODO(adurbin): This should only be done on a cold boot. Also, some * of these banks are core vs package scope. For now every CPU clears @@ -117,8 +119,10 @@ void soc_core_init(struct device *cpu) /* Set energy policy */ set_energy_perf_bias(ENERGY_POLICY_NORMAL); - /* Enable Turbo */ - enable_turbo(); + if (cfg->cpu_turbo_disable) + disable_turbo(); + else + enable_turbo(); /* Enable Vmx */ set_vmx_and_lock(); |