From: Patrick Rudolph <patrick.rudolph@xxxxxxxxxxxxx> The TDA38640 chip has different output control mechanisms depending on its mode of operation. When the chip is in SVID mode, only hardware-based output control is supported via ENABLE pin. However, when it operates in PMBus mode, software control works perfectly. To enable software control as a workaround in SVID mode, add the DT property 'infineon,en-svid-control'. This property will enable the workaround, which utilizes ENABLE pin polarity flipping for output when the chip is in SVID mode. Signed-off-by: Patrick Rudolph <patrick.rudolph@xxxxxxxxxxxxx> Signed-off-by: Naresh Solanki <Naresh.Solanki@xxxxxxxxxxxxx> --- .../hwmon/pmbus/infineon,tda38640.yaml | 51 +++++++++++++++++++ .../devicetree/bindings/trivial-devices.yaml | 2 - 2 files changed, 51 insertions(+), 2 deletions(-) create mode 100644 Documentation/devicetree/bindings/hwmon/pmbus/infineon,tda38640.yaml diff --git a/Documentation/devicetree/bindings/hwmon/pmbus/infineon,tda38640.yaml b/Documentation/devicetree/bindings/hwmon/pmbus/infineon,tda38640.yaml new file mode 100644 index 000000000000..c5924ddf1b47 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/pmbus/infineon,tda38640.yaml @@ -0,0 +1,51 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- + +$id: http://devicetree.org/schemas/hwmon/pmbus/infineon,tda38640.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Infineon TDA38640 Synchronous Buck Regulator with SVID and I2C + +maintainers: + - Naresh Solanki <naresh.solanki@xxxxxxxxxxxxx> + +description: | + The Infineon TDA38640 is a 40A Single-voltage Synchronous Buck + Regulator with SVID and I2C designed for Industrial use. + + Datasheet: https://www.infineon.com/dgdl/Infineon-TDA38640-0000-DataSheet-v02_04-EN.pdf?fileId=8ac78c8c80027ecd018042f2337f00c9 + +properties: + compatible: + enum: + - infineon,tda38640 + + reg: + maxItems: 1 + + infineon,en-svid-control: + description: | + When enabled, it allows the chip to utilize workaround for + software control of output when operating in SVID mode where + hardware-based output control is the default behavior. + type: boolean + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + tda38640@40 { + compatible = "infineon,tda38640"; + reg = <0x40>; + }; + }; + diff --git a/Documentation/devicetree/bindings/trivial-devices.yaml b/Documentation/devicetree/bindings/trivial-devices.yaml index 40bc475ee7e1..86c7d34f63bf 100644 --- a/Documentation/devicetree/bindings/trivial-devices.yaml +++ b/Documentation/devicetree/bindings/trivial-devices.yaml @@ -151,8 +151,6 @@ properties: - infineon,slb9645tt # Infineon SLB9673 I2C TPM 2.0 - infineon,slb9673 - # Infineon TDA38640 Voltage Regulator - - infineon,tda38640 # Infineon TLV493D-A1B6 I2C 3D Magnetic Sensor - infineon,tlv493d-a1b6 # Infineon Multi-phase Digital VR Controller xdpe11280 base-commit: cb7022b8976e3c4d12cea2e7bb820a2944e2fd7b -- 2.41.0
