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[v2,5/5] platform/x86/intel: intel_pmc_core: Add GBE Package C10 fix for Alder Lake PCH

Message ID cea5cf09ddecface98712e5db877a70e8c41d581.1625709047.git.gayatri.kammela@intel.com (mailing list archive)
State Superseded, archived
Headers show
Series Add Alder Lake PCH-S support to PMC core driver | expand

Commit Message

Kammela, Gayatri July 8, 2021, 2:07 a.m. UTC 
From: "David E. Box" <david.e.box@linux.intel.com>

Alder PCH uses the same Gigabit Ethernet (GBE) device as Tiger Lake PCH
which cannot achieve PC10 without ignoring the PMC GBE LTR. Add this
work around for Alder Lake PCH as well.

Cc: Srinivas Pandruvada <srinivas.pandruvada@intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: You-Sheng Yang <vicamo.yang@canonical.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
---
 drivers/platform/x86/intel/pmc/intel_pmc_core.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
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Patch

diff --git a/drivers/platform/x86/intel/pmc/intel_pmc_core.c b/drivers/platform/x86/intel/pmc/intel_pmc_core.c
index 27346ff5a924..84b58b557a49 100644
--- a/drivers/platform/x86/intel/pmc/intel_pmc_core.c
+++ b/drivers/platform/x86/intel/pmc/intel_pmc_core.c
@@ -1983,10 +1983,10 @@  static int pmc_core_probe(struct platform_device *pdev)
 		pmc_core_get_tgl_lpm_reqs(pdev);
 
 	/*
-	 * On TGL, due to a hardware limitation, the GBE LTR blocks PC10 when
-	 * a cable is attached. Tell the PMC to ignore it.
+	 * On TGL and ADL, due to a hardware limitation, the GBE LTR blocks PC10
+	 * when a cable is attached. Tell the PMC to ignore it.
 	 */
-	if (pmcdev->map == &tgl_reg_map) {
+	if (pmcdev->map == &tgl_reg_map || pmcdev->map == &adl_reg_map) {
 		dev_dbg(&pdev->dev, "ignoring GBE LTR\n");
 		pmc_core_send_ltr_ignore(pmcdev, 3);
 	}