linux-kernel - [PATCH 1/3] peci: cpu: add Intel Emerald Rapids support

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Message-ID: <20251006215321.5036-2-fr0st61te@gmail.com>
Date: Tue,  7 Oct 2025 00:53:19 +0300
From: Ivan Mikhaylov <fr0st61te@...il.com>
To: Iwona Winiarska <iwona.winiarska@...el.com>,
	Guenter Roeck <linux@...ck-us.net>
Cc: linux-hwmon@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	openbmc@...ts.ozlabs.org,
	Ivan Mikhaylov <fr0st61te@...il.com>
Subject: [PATCH 1/3] peci: cpu: add Intel Emerald Rapids support

Add support for detection of Intel Emerald Rapids processor based on
CPU model.

Emerald Rapids Xeon processors with the model set to
INTEL_EMERALDRAPIDS_X. The data field for this entry is "emr".

Tested the patch series with AST2600 BMC with 5S Intel Emerald Rapids
processors & verified by reading cpu & dimm temperature which matches
host sensor values from lmsensors.

Signed-off-by: Ivan Mikhaylov <fr0st61te@...il.com>
---
 drivers/peci/cpu.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/peci/cpu.c b/drivers/peci/cpu.c
index 2dac8ba82787..fbccc1d1b637 100644
--- a/drivers/peci/cpu.c
+++ b/drivers/peci/cpu.c
@@ -321,6 +321,10 @@ static const struct peci_device_id peci_cpu_device_ids[] = {
 		.x86_vfm = INTEL_SAPPHIRERAPIDS_X,
 		.data	= "spr",
 	},
+	{ /* Emerald Rapids Xeon */
+		.x86_vfm  = INTEL_EMERALDRAPIDS_X,
+		.data  = "emr",
+	},
 	{ }
 };
 MODULE_DEVICE_TABLE(peci, peci_cpu_device_ids);
-- 
2.49.0