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charset="utf-8" Current driver assume PWR_AVG and VI_AVG as 1 by default, and user needs to set sample averaging via sysfs manually. This patch parses the properties below from device tree, and setting sample averaging during probe. - adi,power-sample-average - adi,volt-curr-sample-average Signed-off-by: Potin Lai --- drivers/hwmon/pmbus/adm1275.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/drivers/hwmon/pmbus/adm1275.c b/drivers/hwmon/pmbus/adm1275.c index d311e0557401..4fc1421b7540 100644 --- a/drivers/hwmon/pmbus/adm1275.c +++ b/drivers/hwmon/pmbus/adm1275.c @@ -83,6 +83,8 @@ enum chips { adm1075, adm1272, adm1275, adm1276, adm1278,= adm1293, adm1294 }; #define ADM1278_VI_AVG_MASK GENMASK(ADM1278_VI_AVG_SHIFT + 2, \ ADM1278_VI_AVG_SHIFT) =20 +#define ADM1275_SAMPLES_AVG_MAX_INDEX 7 + struct adm1275_data { int id; bool have_oc_fault; @@ -475,6 +477,7 @@ static int adm1275_probe(struct i2c_client *client) int vindex =3D -1, voindex =3D -1, cindex =3D -1, pindex =3D -1; int tindex =3D -1; u32 shunt; + u8 avgindex; =20 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_READ_BYTE_DATA @@ -756,6 +759,34 @@ static int adm1275_probe(struct i2c_client *client) return -ENODEV; } =20 + if (data->have_power_sampling && + of_property_read_u8(client->dev.of_node, + "adi,power-sample-average", &avgindex) =3D=3D 0) { + if (avgindex > ADM1275_SAMPLES_AVG_MAX_INDEX) + return -EINVAL; + ret =3D adm1275_write_pmon_config(data, client, true, avgindex); + if (ret < 0) { + dev_err(&client->dev, + "Setting power sample averaging failed with error %d", + ret); + return ret; + } + } + + if (of_property_read_u8(client->dev.of_node, + "adi,volt-curr-sample-average", + &avgindex) =3D=3D 0) { + if (avgindex > ADM1275_SAMPLES_AVG_MAX_INDEX) + return -EINVAL; + ret =3D adm1275_write_pmon_config(data, client, false, avgindex); + if (ret < 0) { + dev_err(&client->dev, + "Setting voltage and current sample averaging failed with error %d", + ret); + return ret; + } + } + if (voindex < 0) voindex =3D vindex; if (vindex >=3D 0) { --=20 2.17.1 From nobody Thu Jun 25 02:02:56 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8CDDBC4321E for ; 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charset="utf-8" Add new properties for binding sample averaging in PMON_CONFIG register - adi,volt-curr-sample-average - adi,power-sample-average Signed-off-by: Potin Lai --- .../bindings/hwmon/adi,adm1275.yaml | 44 +++++++++++++++++++ 1 file changed, 44 insertions(+) diff --git a/Documentation/devicetree/bindings/hwmon/adi,adm1275.yaml b/Doc= umentation/devicetree/bindings/hwmon/adi,adm1275.yaml index 223393d7cafd..325f6827648f 100644 --- a/Documentation/devicetree/bindings/hwmon/adi,adm1275.yaml +++ b/Documentation/devicetree/bindings/hwmon/adi,adm1275.yaml @@ -37,6 +37,48 @@ properties: description: Shunt resistor value in micro-Ohm. =20 + adi,volt-curr-sample-average: + description: | + A value to configure VI_AVG in PMON_CONFIG register to indicate a + number of samples to be used to report voltage and currentvalues. + If set to 7, the 128 samples averaging would be used. + + $ref: /schemas/types.yaml#/definitions/uint8 + enum: + - 0 # 1 sample averaging + - 1 # 2 sample averaging + - 2 # 4 sample averaging + - 3 # 8 sample averaging + - 4 # 16 sample averaging + - 5 # 32 sample averaging + - 6 # 64 sample averaging + - 7 # 128 sample averaging + default: 0 + + adi,power-sample-average: + description: | + A value to configure PWR_AVG in PMON_CONFIG register to indicate a + number of samples to be used to report power values. + If set to 7, the 128 samples averaging would be used. + + The chip supports power sample averaging: + "adi,adm1272" + "adi,adm1278" + "adi,adm1293" + "adi,adm1294" + + $ref: /schemas/types.yaml#/definitions/uint8 + enum: + - 0 # 1 sample averaging + - 1 # 2 sample averaging + - 2 # 4 sample averaging + - 3 # 8 sample averaging + - 4 # 16 sample averaging + - 5 # 32 sample averaging + - 6 # 64 sample averaging + - 7 # 128 sample averaging + default: 0 + required: - compatible - reg @@ -53,5 +95,7 @@ examples: compatible =3D "adi,adm1272"; reg =3D <0x10>; shunt-resistor-micro-ohms =3D <500>; + adi,volt-curr-sample-average =3D /bits/ 8 <0x07>; + adi,power-sample-average =3D /bits/ 8 <0x07>; }; }; --=20 2.17.1