[PATCH AUTOSEL 6.17-6.6] hwmon: (k10temp) Add thermal support for AMD Family 1Ah-based models

[Sasha Levin <sashal@kernel.org>]

From: Avadhut Naik <avadhut.naik@amd.com>

[ Upstream commit f116af2eb51ed9df24911537fda32a033f1c58da ]

Add thermal info support for newer AMD Family 1Ah-based models.

Signed-off-by: Avadhut Naik <avadhut.naik@amd.com>
Link: https://lore.kernel.org/r/20250729001644.257645-1-avadhut.naik@amd.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

LLM Generated explanations, may be completely bogus:

YES
- Adds missing device IDs for AMD Family 1Ah model 50h/90h locally in
  `drivers/hwmon/k10temp.c:86` so the stable tree doesn’t need header
  updates, keeping the change self‑contained and under the “just add a
  device ID” rule.
- Extends `k10temp_id_table` to match those IDs
  (`drivers/hwmon/k10temp.c:563` and `drivers/hwmon/k10temp.c:565`),
  letting the existing probe path bind on the new desktop parts; without
  it, users on those CPUs lose all `k10temp` temperature readouts.
- The runtime logic for Family 1Ah CPUs was already upstreamed earlier
  (see the 2023 support commit still present in this tree at
  `drivers/hwmon/k10temp.c:482`), so the new entries simply reuse a
  proven Zen5/1Ah code path with no behavioral changes for older
  systems.
- No collateral effects: no register programming changes, no new flows,
  and the driver keeps using the same SMN readouts, so regression risk
  is negligible while hardware coverage noticeably improves.

 drivers/hwmon/k10temp.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/hwmon/k10temp.c b/drivers/hwmon/k10temp.c
index babf2413d666f..2f90a2e9ad496 100644
--- a/drivers/hwmon/k10temp.c
+++ b/drivers/hwmon/k10temp.c
@@ -84,6 +84,13 @@ static DEFINE_MUTEX(nb_smu_ind_mutex);
  */
 #define AMD_I3255_STR				"3255"
 
+/*
+ * PCI Device IDs for AMD's Family 1Ah-based SOCs.
+ * Defining locally as IDs are not shared.
+ */
+#define PCI_DEVICE_ID_AMD_1AH_M50H_DF_F3	0x12cb
+#define PCI_DEVICE_ID_AMD_1AH_M90H_DF_F3	0x127b
+
 struct k10temp_data {
 	struct pci_dev *pdev;
 	void (*read_htcreg)(struct pci_dev *pdev, u32 *regval);
@@ -556,7 +563,9 @@ static const struct pci_device_id k10temp_id_table[] = {
 	{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_19H_M78H_DF_F3) },
 	{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_1AH_M00H_DF_F3) },
 	{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_1AH_M20H_DF_F3) },
+	{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_1AH_M50H_DF_F3) },
 	{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_1AH_M60H_DF_F3) },
+	{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_1AH_M90H_DF_F3) },
 	{ PCI_VDEVICE(HYGON, PCI_DEVICE_ID_AMD_17H_DF_F3) },
 	{}
 };
-- 
2.51.0