From 66a91c00218c5f5d19e5bfaada05432c672b8241 Mon Sep 17 00:00:00 2001 From: "David E. Box" Date: Mon, 16 Aug 2021 09:58:34 -0700 Subject: [PATCH] platform/x86/intel: pmc/core: Add GBE Package C10 fix for Alder Lake PCH 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: Chao Qin Cc: Srinivas Pandruvada Cc: Andy Shevchenko Tested-by: You-Sheng Yang Acked-by: Rajneesh Bhardwaj Reviewed-by: Hans de Goede Reviewed-by: Andy Shevchenko Signed-off-by: David E. Box Link: https://lore.kernel.org/r/9168e8bd687f2d0d5eb0ed116e08d0764eadf7b3.1629091915.git.gayatri.kammela@intel.com Signed-off-by: Hans de Goede --- drivers/platform/x86/intel/pmc/core.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/platform/x86/intel/pmc/core.c b/drivers/platform/x86/intel/pmc/core.c index 42f49ad0793d..ac19fcc9abbf 100644 --- a/drivers/platform/x86/intel/pmc/core.c +++ b/drivers/platform/x86/intel/pmc/core.c @@ -2020,10 +2020,10 @@ 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); }