linux-kernel - [PATCH] EDAC/amd64: Add support for family 19h, models 40h-4fh

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Message-ID: <20251124181335.284780-1-devangnayanbhai.vyas@amd.com>
Date: Mon, 24 Nov 2025 23:43:35 +0530
From: Devang Vyas <devangnayanbhai.vyas@....com>
To: <yazen.ghannam@....com>, <bp@...en8.de>, <tony.luck@...el.com>,
	<linux-edac@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: Devang Vyas <devangnayanbhai.vyas@....com>, Ramesh Garidapuri
	<ramesh.garidapuri@....com>
Subject: [PATCH] EDAC/amd64: Add support for family 19h, models 40h-4fh

This patch updates the EDAC driver to include support
for AMD SoC family 19h models 40h-4fh to support
Ryzen 6000 CPUs/APUs ("Rembrandt").

The added changes enhance the ability to detect and
report memory errors on systems that utilize AMD SoCs
from the specified family.

Co-developed-by: Ramesh Garidapuri <ramesh.garidapuri@....com>
Signed-off-by: Ramesh Garidapuri <ramesh.garidapuri@....com>
Signed-off-by: Devang Vyas <devangnayanbhai.vyas@....com>
---
 drivers/edac/amd64_edac.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 2391f3469961..6cf0b6d7b5ec 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -3863,6 +3863,9 @@ static int per_family_init(struct amd64_pvt *pvt)
 				pvt->max_mcs		= 8;
 			}
 			break;
+		case 0x40 ... 0x4f:
+			pvt->max_mcs			= 4;
+			break;
 		case 0x60 ... 0x6f:
 			pvt->flags.zn_regs_v2		= 1;
 			break;
-- 
2.25.1