[PATCH]hwmon: (k10temp) Add support for Zen5 Ryzen Desktop

From: David Hows
Date: Thu Mar 27 2025 - 20:38:16 EST


Add support for retrieving CCD temperatures on Granite Ridge Ryzen Desktop CPUs

Tested locally against my 9950X3D CPU.
---
drivers/hwmon/k10temp.c | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/drivers/hwmon/k10temp.c b/drivers/hwmon/k10temp.c
index d0b4cc9a5011..cc2ad7a324f9 100644
--- a/drivers/hwmon/k10temp.c
+++ b/drivers/hwmon/k10temp.c
@@ -502,6 +502,13 @@ static int k10temp_probe(struct pci_dev *pdev, const struct pci_device_id *id)
k10temp_get_ccd_support(data, 12);
break;
}
+ } else if (boot_cpu_data.x86 == 0x1a) {
+ switch (boot_cpu_data.x86_model) {
+ case 0x40 ... 0x4f: /* Zen5 Ryzen Desktop*/
+ data->ccd_offset = 0x308;
+ k10temp_get_ccd_support(data, 8);
+ break;
+ }
}

for (i = 0; i < ARRAY_SIZE(tctl_offset_table); i++) {
--
2.49.0