diff options
| author | Kane Chen <kane.chen@intel.com> | 2019-10-22 12:51:36 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-10-22 20:10:08 +0000 |
| commit | 58e96705cbc78d3f1f330945b1f16b3fae277427 (patch) | |
| tree | 80f2e4f4184fed1717bed299a584b2ad92b98fc1 /src/soc/intel | |
| parent | 61a2d25a01f59de21e0396feaf0d29351aadb23f (diff) | |
soc/intel/cannonlake: Fix FSP UPDs settings with disabled GBE
The previous code actually set SlpS0WithGbeSupport even when GBE is
disabled in device tree and could cause power consumption in s0ix.
This change will config PchPmSlpS0VmRuntimeControl, PchPmSlpS0Vm070VSupport,
PchPmSlpS0Vm075VSupport by device tree.
SlpS0WithGbeSupport will be set only when s0ix and gbe are enabled.
BUG=b:134092071
TEST=Run suspend_stress_test on kohaku and pass 100 cycles
Change-Id: I154a4e6970f99360aeb880d576eb61528034f7b6
Signed-off-by: Kane Chen <kane.chen@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35595
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/soc/intel')
| -rw-r--r-- | src/soc/intel/cannonlake/fsp_params.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/soc/intel/cannonlake/fsp_params.c b/src/soc/intel/cannonlake/fsp_params.c index b580620d70..74884fde1f 100644 --- a/src/soc/intel/cannonlake/fsp_params.c +++ b/src/soc/intel/cannonlake/fsp_params.c @@ -192,6 +192,10 @@ void platform_fsp_silicon_init_params_cb(FSPS_UPD *supd) sizeof(params->SataPortsDevSlpResetConfig)); #endif } + params->SlpS0WithGbeSupport = 0; + params->PchPmSlpS0VmRuntimeControl = config->PchPmSlpS0VmRuntimeControl; + params->PchPmSlpS0Vm070VSupport = config->PchPmSlpS0Vm070VSupport; + params->PchPmSlpS0Vm075VSupport = config->PchPmSlpS0Vm075VSupport; /* Lan */ dev = pcidev_path_on_root(PCH_DEVFN_GBE); @@ -199,7 +203,14 @@ void platform_fsp_silicon_init_params_cb(FSPS_UPD *supd) params->PchLanEnable = 0; else { params->PchLanEnable = dev->enabled; - if (config->s0ix_enable) { + if (config->s0ix_enable && params->PchLanEnable) { + /* + * The VmControl UPDs need to be set as per board + * design to allow voltage margining in S0ix to lower + * power consumption. + * But if GbE is enabled, voltage magining cannot be + * enabled, so the Vm control UPDs need to be set to 0. + */ params->SlpS0WithGbeSupport = 1; params->PchPmSlpS0VmRuntimeControl = 0; params->PchPmSlpS0Vm070VSupport = 0; |