The ROHM BD99954 is a Battery Management LSI for 1-4 cell Lithium-Ion secondary battery. Intended to be used in space-constraint equipment such as Low profile Notebook PC, Tablets and other applications. BD99954 provides a Dual-source Battery Charger, two port BC1.2 detection and a Battery Monitor. Document the DT bindings for BD99954 Signed-off-by: Matti Vaittinen <matti.vaittinen@xxxxxxxxxxxxxxxxx> --- I think these properties could probably be generic and not vendor specific, right? If so, then I could try adding parser function(s) for them in power/supply framework. How do you guys see this? .../bindings/power/supply/rohm,bd9995x.yaml | 118 ++++++++++++++++++ 1 file changed, 118 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/supply/rohm,bd9995x.yaml diff --git a/Documentation/devicetree/bindings/power/supply/rohm,bd9995x.yaml b/Documentation/devicetree/bindings/power/supply/rohm,bd9995x.yaml new file mode 100644 index 000000000000..ba9fe1dc3f2f --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/rohm,bd9995x.yaml @@ -0,0 +1,118 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/power/supply/rohm,bd9995x.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ROHM BD99954 Battery charger driver + +maintainers: + - Matti Vaittinen <matti.vaittinen@xxxxxxxxxxxxxxxxx> + - Markus Laine <markus.laine@xxxxxxxxxxxxxxxxx> + - Mikko Mutanen <mikko.mutanen@xxxxxxxxxxxxxxxxx> + +description: | + The ROHM BD99954 is a Battery Management LSI for 1-4 cell Lithium-Ion + secondary battery intended to be used in space-constraint equipment such + as Low profile Notebook PC, Tablets and other applications. BD99954 + provides a Dual-source Battery Charger, two port BC1.2 detection and a + Battery Monitor. + +properties: + compatible: + const: rohm,bd9995x-charger + + rohm,vbus-input-current-limit-microamp: + description: + system specific VBUS input current limit (in microamps). + minimum: 32000 + maximum: 16352000 + multipleOf: 32000 + + rohm,vcc-input-current-limit-microamp: + description: + system specific VCC/VACP input current limit (in microamps). + minimum: 32000 + maximum: 16352000 + multipleOf: 32000 + + rohm,trickle-charging-current-microamp: + description: + battery specific value for trickle-charging current. + minimum: 64000 + maximum: 1024000 + multipleOf: 64000 + + rohm,pre-charging-current-microamp: + description: + battery specific value for pre-charging current. + minimum: 64000 + maximum: 1024000 + multipleOf: 64000 + + rohm,fast-charging-regulation-microvolt: + description: + battery/system specific upper limit for battry/system voltage. + minimum: 2560000 + maximum: 19200000 + multipleOf: 16000 + + rohm,vsys-regulation-microvolt: + description: + system specific lower limit for system voltage. + minimum: 2560000 + maximum: 19200000 + multipleOf: 64000 + + rohm,pre-charge-voltage-threshold-microvolt: + description: + voltage limit for changing from trickle to pre-charging. + minimum: 2048000 + maximum: 19200000 + multipleOf: 64000 + + rohm,re-charge-battery-voltage-microvolt: + description: + voltage limit for automatically re-starting the battery charging. + minimum: 2560000 + maximum: 19200000 + multipleOf: 16000 + + rohm,battery-over-voltage-threshold-microvolt: + description: + voltage limit for detecting battery over voltage. + minimum: 2560000 + maximum: 19200000 + multipleOf: 16000 + +required: + - compatible + - rohm,vbus-input-current-limit-microamp + - rohm,vcc-input-current-limit-microamp + - rohm,trickle-charging-current-microamp + - rohm,pre-charging-current-microamp + - rohm,fast-charging-regulation-microvolt + - rohm,vsys-regulation-microvolt + - rohm,pre-charge-voltage-threshold-microvolt + - rohm,re-charge-battery-voltage-microvolt + - rohm,battery-over-voltage-threshold-microvolt + +examples: + - | + i2c { + charger@9 { + compatible = "rohm,bd9995x-charger"; + reg = <0x9>; + interrupt-parent = <&gpio1>; + interrupts = <29 8>; + rohm,vsys-regulation-microvolt = <8960000>; + rohm,vbus-input-current-limit-microamp = <1472000>; + rohm,vcc-input-current-limit-microamp = <1472000>; + rohm,trickle-charging-current-microamp = <256000>; + rohm,pre-charging-current-microamp = <256000>; + rohm,fast-charging-regulation-microvolt = <8400000>; + rohm,pre-charge-voltage-threshold-microvolt = <2048000>; + rohm,re-charge-battery-voltage-microvolt = <8112000>; + rohm,battery-over-voltage-threshold-microvolt = <8912000>; + }; + }; -- 2.21.0 -- Matti Vaittinen, Linux device drivers ROHM Semiconductors, Finland SWDC Kiviharjunlenkki 1E 90220 OULU FINLAND ~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~ Simon says - in Latin please. ~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~ Thanks to Simon Glass for the translation =]
