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Subject[PATCH v3 06/12] dt-bindings: power: supply: smb347-charger: Document USB VBUS regulator
Date
SMB347 can supply power to USB VBUS, which is required by OTG-cable
devices that want to switch USB port into the host mode. Add USB VBUS
regulator properties.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
.../power/supply/summit,smb347-charger.yaml | 28 +++++++++++++++++++
.../dt-bindings/power/summit,smb347-charger.h | 4 +++
2 files changed, 32 insertions(+)

diff --git a/Documentation/devicetree/bindings/power/supply/summit,smb347-charger.yaml b/Documentation/devicetree/bindings/power/supply/summit,smb347-charger.yaml
index 983fc215c1e5..cd3d834f734d 100644
--- a/Documentation/devicetree/bindings/power/supply/summit,smb347-charger.yaml
+++ b/Documentation/devicetree/bindings/power/supply/summit,smb347-charger.yaml
@@ -73,6 +73,24 @@ properties:
- 1 # SMB3XX_SOFT_TEMP_COMPENSATE_CURRENT Current compensation
- 2 # SMB3XX_SOFT_TEMP_COMPENSATE_VOLTAGE Voltage compensation

+ summit,inok-polarity:
+ description: |
+ Polarity of INOK signal indicating presence of external power supply.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum:
+ - 0 # SMB3XX_SYSOK_INOK_ACTIVE_LOW
+ - 1 # SMB3XX_SYSOK_INOK_ACTIVE_HIGH
+
+ usb-vbus:
+ $ref: "../../regulator/regulator.yaml#"
+ type: object
+
+ properties:
+ summit,needs-inok-toggle:
+ type: boolean
+ description: INOK signal is fixed and polarity needs to be toggled
+ in order to enable/disable output mode.
+
allOf:
- if:
properties:
@@ -134,6 +152,7 @@ examples:
reg = <0x7f>;

summit,enable-charge-control = <SMB3XX_CHG_ENABLE_PIN_ACTIVE_HIGH>;
+ summit,inok-polarity = <SMB3XX_SYSOK_INOK_ACTIVE_LOW>;
summit,chip-temperature-threshold-celsius = <110>;
summit,mains-current-limit-microamp = <2000000>;
summit,usb-current-limit-microamp = <500000>;
@@ -141,6 +160,15 @@ examples:
summit,enable-mains-charging;

monitored-battery = <&battery>;
+
+ usb-vbus {
+ regulator-name = "usb_vbus";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ regulator-min-microamp = <750000>;
+ regulator-max-microamp = <750000>;
+ summit,needs-inok-toggle;
+ };
};
};

diff --git a/include/dt-bindings/power/summit,smb347-charger.h b/include/dt-bindings/power/summit,smb347-charger.h
index d918bf321a71..3205699b5e41 100644
--- a/include/dt-bindings/power/summit,smb347-charger.h
+++ b/include/dt-bindings/power/summit,smb347-charger.h
@@ -16,4 +16,8 @@
#define SMB3XX_CHG_ENABLE_PIN_ACTIVE_LOW 1
#define SMB3XX_CHG_ENABLE_PIN_ACTIVE_HIGH 2

+/* Polarity of INOK signal */
+#define SMB3XX_SYSOK_INOK_ACTIVE_LOW 0
+#define SMB3XX_SYSOK_INOK_ACTIVE_HIGH 1
+
#endif
--
2.32.0
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