diff options
| author | leo.chou <leo.chou@lcfc.corp-partner.google.com> | 2022-05-13 10:41:03 +0800 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2022-05-25 18:54:56 +0000 |
| commit | aef916a5474bd5d30d4f63f4a2aa556586fcfd2a (patch) | |
| tree | 7c9c7671c8a36824881218e7c57493f8aba172da | |
| parent | 288f761a93c9da20ee5aeccad0c3c404d3dc697c (diff) | |
soc/intel/alderlake: Add chip config for DPA PreWake
The FSP includes a UPD to set the DPA (Dynamic Periodicity
Alteration) PreWake value, which can be used to set the maximum
pre-wake randomization time in "micro-ticks". This patch adds
support for configuring that value.
BUG=b:228410327
TEST=build FW and checked DPA value by fsp log.
Signed-off-by: leo.chou <leo.chou@lcfc.corp-partner.google.com>
Change-Id: I08897c590a88aba058cb9e364185ea0794e1e7c3
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64316
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
| -rw-r--r-- | src/soc/intel/alderlake/chip.h | 7 | ||||
| -rw-r--r-- | src/soc/intel/alderlake/fsp_params.c | 1 |
2 files changed, 8 insertions, 0 deletions
diff --git a/src/soc/intel/alderlake/chip.h b/src/soc/intel/alderlake/chip.h index 665a68c100..2c260c97c5 100644 --- a/src/soc/intel/alderlake/chip.h +++ b/src/soc/intel/alderlake/chip.h @@ -557,6 +557,13 @@ struct soc_intel_alderlake_config { uint8_t fivr_spread_spectrum; /* Enable or Disable Acoustic Noise Mitigation feature */ uint8_t acoustic_noise_mitigation; + /* + * Acoustic Noise Mitigation Range. Defines the maximum Pre-Wake + * randomization time in micro ticks. This can be programmed only + * if AcousticNoiseMitigation is enabled. + * Range 0-255 + */ + uint8_t PreWake; /* Disable Fast Slew Rate for Deep Package C States for VR domains */ uint8_t fast_pkg_c_ramp_disable[NUM_VR_DOMAINS]; /* diff --git a/src/soc/intel/alderlake/fsp_params.c b/src/soc/intel/alderlake/fsp_params.c index a427289149..e3222be02e 100644 --- a/src/soc/intel/alderlake/fsp_params.c +++ b/src/soc/intel/alderlake/fsp_params.c @@ -835,6 +835,7 @@ static void fill_fsps_acoustic_params(FSP_S_CONFIG *s_cfg, s_cfg->AcousticNoiseMitigation = config->acoustic_noise_mitigation; if (s_cfg->AcousticNoiseMitigation) { + s_cfg->PreWake = config->PreWake; for (int i = 0; i < NUM_VR_DOMAINS; i++) { s_cfg->FastPkgCRampDisable[i] = config->fast_pkg_c_ramp_disable[i]; s_cfg->SlowSlewRate[i] = config->slow_slew_rate[i]; |