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authorLijian Zhao <lijian.zhao@intel.com>2018-11-14 16:15:46 -0800
committerPatrick Georgi <pgeorgi@google.com>2018-11-17 07:25:54 +0000
commit79152f3c811879cc61576b7d8788d7bdda17066d (patch)
tree1c41115b6bfdb3702c2da016d9f1e19760121763
parent28114ae71bd94c5db17073e1e9a96173331055be (diff)
downloadcoreboot-79152f3c811879cc61576b7d8788d7bdda17066d.tar.xz
soc/intel/cannonlake: Add options for pcie ltr
FSP can support enable/disable Pci express LTR (Latency Tolerance Reporting) mechanism through upd interface. Include that into coreboot side. BUG=N/A TEST=N/A Change-Id: I69b423afa4f81a2d58375734bba07792e08931d5 Signed-off-by: Lijian Zhao <lijian.zhao@intel.com> Reviewed-on: https://review.coreboot.org/29642 Reviewed-by: Pratikkumar V Prajapati <pratikkumar.v.prajapati@intel.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
-rw-r--r--src/soc/intel/cannonlake/chip.h2
-rw-r--r--src/soc/intel/cannonlake/fsp_params.c2
2 files changed, 4 insertions, 0 deletions
diff --git a/src/soc/intel/cannonlake/chip.h b/src/soc/intel/cannonlake/chip.h
index 4f30382d2d..9eb91bdac1 100644
--- a/src/soc/intel/cannonlake/chip.h
+++ b/src/soc/intel/cannonlake/chip.h
@@ -154,6 +154,8 @@ struct soc_intel_cannonlake_config {
/* PCIe ClkReq-to-ClkSrc mapping, number of clkreq signal assigned to
* clksrc. */
uint8_t PcieClkSrcClkReq[CONFIG_MAX_ROOT_PORTS];
+ /* PCIe LTR(Latency Tolerance Reporting) mechanism */
+ uint8_t PcieRpLtrEnable[CONFIG_MAX_ROOT_PORTS];
/* eMMC and SD */
uint8_t ScsEmmcHs400Enabled;
diff --git a/src/soc/intel/cannonlake/fsp_params.c b/src/soc/intel/cannonlake/fsp_params.c
index 3314f6d989..f95745983d 100644
--- a/src/soc/intel/cannonlake/fsp_params.c
+++ b/src/soc/intel/cannonlake/fsp_params.c
@@ -171,6 +171,8 @@ void platform_fsp_silicon_init_params_cb(FSPS_UPD *supd)
sizeof(config->PcieClkSrcUsage));
memcpy(params->PcieClkSrcClkReq, config->PcieClkSrcClkReq,
sizeof(config->PcieClkSrcClkReq));
+ memcpy(params->PcieRpLtrEnable, config->PcieRpLtrEnable,
+ sizeof(config->PcieRpLtrEnable));
/* eMMC and SD */
dev = dev_find_slot(0, PCH_DEVFN_EMMC);