[PATCH] hwmon: (peci/cputemp) Fix miscalculated DTS for SKX

From: Iwona Winiarska
Date: Tue Mar 21 2023 - 05:05:33 EST


For Skylake, DTS temperature of the CPU is reported in S10.6 format
instead of S8.8.

Reported-by: Paul Fertser <fercerpav@xxxxxxxxx>
Link: https://lore.kernel.org/lkml/ZBhHS7v+98NK56is@xxxxxxxxxxxxxx/
Signed-off-by: Iwona Winiarska <iwona.winiarska@xxxxxxxxx>
---
drivers/hwmon/peci/cputemp.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/hwmon/peci/cputemp.c b/drivers/hwmon/peci/cputemp.c
index 30850a479f61..87d56f0fc888 100644
--- a/drivers/hwmon/peci/cputemp.c
+++ b/drivers/hwmon/peci/cputemp.c
@@ -537,6 +537,12 @@ static const struct cpu_info cpu_hsx = {
.thermal_margin_to_millidegree = &dts_eight_dot_eight_to_millidegree,
};

+static const struct cpu_info cpu_skx = {
+ .reg = &resolved_cores_reg_hsx,
+ .min_peci_revision = 0x33,
+ .thermal_margin_to_millidegree = &dts_ten_dot_six_to_millidegree,
+};
+
static const struct cpu_info cpu_icx = {
.reg = &resolved_cores_reg_icx,
.min_peci_revision = 0x40,
@@ -558,7 +564,7 @@ static const struct auxiliary_device_id peci_cputemp_ids[] = {
},
{
.name = "peci_cpu.cputemp.skx",
- .driver_data = (kernel_ulong_t)&cpu_hsx,
+ .driver_data = (kernel_ulong_t)&cpu_skx,
},
{
.name = "peci_cpu.cputemp.icx",
--
2.39.0