Add Emerald Rapids PECI support

[PATCH 3/3] hwmon: (peci/cputemp) add Intel Emerald Rapids support

Posted by Ivan Mikhaylov 2 months, 1 week ago

Add support to read DTS for reading Intel Emerald Rapids platform.

Signed-off-by: Ivan Mikhaylov <fr0st61te@gmail.com>
---
 drivers/hwmon/peci/cputemp.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/hwmon/peci/cputemp.c b/drivers/hwmon/peci/cputemp.c
index c7112dbf008b..b350c9a76894 100644
--- a/drivers/hwmon/peci/cputemp.c
+++ b/drivers/hwmon/peci/cputemp.c
@@ -364,6 +364,7 @@ static int init_core_mask(struct peci_cputemp *priv)
 	case INTEL_ICELAKE_X:
 	case INTEL_ICELAKE_D:
 	case INTEL_SAPPHIRERAPIDS_X:
+	case INTEL_EMERALDRAPIDS_X:
 		ret = peci_ep_pci_local_read(peci_dev, 0, reg->bus, reg->dev,
 					     reg->func, reg->offset + 4, &data);
 		if (ret)
@@ -539,6 +540,13 @@ static struct resolved_cores_reg resolved_cores_reg_spr = {
 	.offset = 0x80,
 };
 
+static struct resolved_cores_reg resolved_cores_reg_emr = {
+	.bus = 31,
+	.dev = 30,
+	.func = 6,
+	.offset = 0x80,
+};
+
 static const struct cpu_info cpu_hsx = {
 	.reg		= &resolved_cores_reg_hsx,
 	.min_peci_revision = 0x33,
@@ -563,6 +571,12 @@ static const struct cpu_info cpu_spr = {
 	.thermal_margin_to_millidegree = &dts_ten_dot_six_to_millidegree,
 };
 
+static const struct cpu_info cpu_emr = {
+	.reg    = &resolved_cores_reg_emr,
+	.min_peci_revision = 0x40,
+	.thermal_margin_to_millidegree = &dts_ten_dot_six_to_millidegree,
+};
+
 static const struct auxiliary_device_id peci_cputemp_ids[] = {
 	{
 		.name = "peci_cpu.cputemp.hsx",
@@ -592,6 +606,10 @@ static const struct auxiliary_device_id peci_cputemp_ids[] = {
 		.name = "peci_cpu.cputemp.spr",
 		.driver_data = (kernel_ulong_t)&cpu_spr,
 	},
+	{
+		.name = "peci_cpu.cputemp.emr",
+		.driver_data = (kernel_ulong_t)&cpu_emr,
+	},
 	{ }
 };
 MODULE_DEVICE_TABLE(auxiliary, peci_cputemp_ids);
-- 
2.49.0

Re: [PATCH 3/3] hwmon: (peci/cputemp) add Intel Emerald Rapids support

Posted by Guenter Roeck 2 months ago

On Tue, Oct 07, 2025 at 12:53:21AM +0300, Ivan Mikhaylov wrote:
> Add support to read DTS for reading Intel Emerald Rapids platform.
> 
> Signed-off-by: Ivan Mikhaylov <fr0st61te@gmail.com>
> Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>

Applied to hwmon-next.

Thanks,
Guenter

Re: [PATCH 3/3] hwmon: (peci/cputemp) add Intel Emerald Rapids support

Posted by Paul Menzel 2 months, 1 week ago

Dear Ivan,


Thank you for your patch.

Am 06.10.25 um 23:53 schrieb Ivan Mikhaylov:
> Add support to read DTS for reading Intel Emerald Rapids platform.
> 
> Signed-off-by: Ivan Mikhaylov <fr0st61te@gmail.com>
> ---
>   drivers/hwmon/peci/cputemp.c | 18 ++++++++++++++++++
>   1 file changed, 18 insertions(+)
> 
> diff --git a/drivers/hwmon/peci/cputemp.c b/drivers/hwmon/peci/cputemp.c
> index c7112dbf008b..b350c9a76894 100644
> --- a/drivers/hwmon/peci/cputemp.c
> +++ b/drivers/hwmon/peci/cputemp.c
> @@ -364,6 +364,7 @@ static int init_core_mask(struct peci_cputemp *priv)
>   	case INTEL_ICELAKE_X:
>   	case INTEL_ICELAKE_D:
>   	case INTEL_SAPPHIRERAPIDS_X:
> +	case INTEL_EMERALDRAPIDS_X:
>   		ret = peci_ep_pci_local_read(peci_dev, 0, reg->bus, reg->dev,
>   					     reg->func, reg->offset + 4, &data);
>   		if (ret)
> @@ -539,6 +540,13 @@ static struct resolved_cores_reg resolved_cores_reg_spr = {
>   	.offset = 0x80,
>   };
>   
> +static struct resolved_cores_reg resolved_cores_reg_emr = {
> +	.bus = 31,
> +	.dev = 30,
> +	.func = 6,
> +	.offset = 0x80,
> +};
> +
>   static const struct cpu_info cpu_hsx = {
>   	.reg		= &resolved_cores_reg_hsx,
>   	.min_peci_revision = 0x33,
> @@ -563,6 +571,12 @@ static const struct cpu_info cpu_spr = {
>   	.thermal_margin_to_millidegree = &dts_ten_dot_six_to_millidegree,
>   };
>   
> +static const struct cpu_info cpu_emr = {
> +	.reg    = &resolved_cores_reg_emr,

Only use one space before the =.

> +	.min_peci_revision = 0x40,
> +	.thermal_margin_to_millidegree = &dts_ten_dot_six_to_millidegree,
> +};
> +
>   static const struct auxiliary_device_id peci_cputemp_ids[] = {
>   	{
>   		.name = "peci_cpu.cputemp.hsx",
> @@ -592,6 +606,10 @@ static const struct auxiliary_device_id peci_cputemp_ids[] = {
>   		.name = "peci_cpu.cputemp.spr",
>   		.driver_data = (kernel_ulong_t)&cpu_spr,
>   	},
> +	{
> +		.name = "peci_cpu.cputemp.emr",
> +		.driver_data = (kernel_ulong_t)&cpu_emr,
> +	},
>   	{ }
>   };
>   MODULE_DEVICE_TABLE(auxiliary, peci_cputemp_ids);

Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>


Kind regards,

Paul