From: Xi Pardee <xi.pardee@linux.intel.com>
To: xi.pardee@linux.intel.com, irenic.rajneesh@gmail.com,
david.e.box@linux.intel.com, ilpo.jarvinen@linux.intel.com,
platform-driver-x86@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org
Subject: [PATCH v2] platform/x86/intel/pmc: Update NVLS PCDS LPM request GUID
Date: Wed, 22 Jul 2026 14:52:57 -0700 [thread overview]
Message-ID: <20260722215259.1382305-1-xi.pardee@linux.intel.com> (raw)
The PMC SSRAM PMT telemetry GUID for Nova Lake S (NVLS) PCDS die
changed due to a firmware version bump. The GUID is used by the PMC
core driver to locate the correct PMT telemetry entry in SSRAM; if it
doesn't match the firmware-reported value, the driver fails to find the
LPM (Low Power Mode) data and cannot load properly.
Update PCDS_LPM_REQ_GUID from 0x01091102 to 0x01091103 to match the
new firmware version.
Signed-off-by: Xi Pardee <xi.pardee@linux.intel.com>
---
drivers/platform/x86/intel/pmc/nvl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/platform/x86/intel/pmc/nvl.c b/drivers/platform/x86/intel/pmc/nvl.c
index 8dabf2511dd9d..1ed02332dbfce 100644
--- a/drivers/platform/x86/intel/pmc/nvl.c
+++ b/drivers/platform/x86/intel/pmc/nvl.c
@@ -14,7 +14,7 @@
/* PMC SSRAM PMT Telemetry GUIDS */
#define PCDH_LPM_REQ_GUID 0x01093101
#define PCHS_LPM_REQ_GUID 0x01092101
-#define PCDS_LPM_REQ_GUID 0x01091102
+#define PCDS_LPM_REQ_GUID 0x01091103
/*
* Die Mapping to Product.
--
2.43.0
next reply other threads:[~2026-07-22 21:53 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-22 21:52 Xi Pardee [this message]
2026-07-24 14:58 ` [PATCH v2] platform/x86/intel/pmc: Update NVLS PCDS LPM request GUID Ilpo Järvinen
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