diff --git a/Documentation/devicetree/bindings/iio/frequency/adf4371.yaml b/Documentation/devicetree/bindings/iio/frequency/adf4371.yaml index 060900156ae5e3f9fcf915213895a265ef492a8f..7ec3ec94356b7e435bf056b92bdf4e69b386ac07 100644 --- a/Documentation/devicetree/bindings/iio/frequency/adf4371.yaml +++ b/Documentation/devicetree/bindings/iio/frequency/adf4371.yaml @@ -33,6 +33,13 @@ properties: Must be "clkin" maxItems: 1 + adi,mute-till-lock-en: + type: boolean + description: + If this property is present, then the supply current to RF8P and RF8N + output stage will shut down until the ADF4371/ADF4372 achieves lock as + measured by the digital lock detect circuitry. + required: - compatible - reg diff --git a/drivers/iio/frequency/adf4371.c b/drivers/iio/frequency/adf4371.c index f874219fa8a2efe08ffb8c94aa94f1733308bb87..e48f15cc9ab5c36d0f140a3f5210e8087fa42acf 100644 --- a/drivers/iio/frequency/adf4371.c +++ b/drivers/iio/frequency/adf4371.c @@ -45,6 +45,10 @@ #define ADF4371_RF_DIV_SEL_MSK GENMASK(6, 4) #define ADF4371_RF_DIV_SEL(x) FIELD_PREP(ADF4371_RF_DIV_SEL_MSK, x) +/* ADF4371_REG25 */ +#define ADF4371_MUTE_LD_MSK BIT(7) +#define ADF4371_MUTE_LD(x) FIELD_PREP(ADF4371_MUTE_LD_MSK, x) + /* ADF4371_REG32 */ #define ADF4371_TIMEOUT_MSK GENMASK(1, 0) #define ADF4371_TIMEOUT(x) FIELD_PREP(ADF4371_TIMEOUT_MSK, x) @@ -484,6 +488,15 @@ static int adf4371_setup(struct adf4371_state *st) if (ret < 0) return ret; + /* Mute to Lock Detect */ + if (device_property_read_bool(&st->spi->dev, "adi,mute-till-lock-en")) { + ret = regmap_update_bits(st->regmap, ADF4371_REG(0x25), + ADF4371_MUTE_LD_MSK, + ADF4371_MUTE_LD(1)); + if (ret < 0) + return ret; + } + /* Set address in ascending order, so the bulk_write() will work */ ret = regmap_update_bits(st->regmap, ADF4371_REG(0x0), ADF4371_ADDR_ASC_MSK | ADF4371_ADDR_ASC_R_MSK,