Re: [PATCH 4/7] dt-bindings: power: supply: Add docs for Ingenic JZ47xx SoCs battery.

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Hi Rob,

Le jeu. 28 févr. 2019 à 15:48, Rob Herring <robh@xxxxxxxxxx> a écrit :
On Sun, Feb 17, 2019 at 03:29:13PM +0100, Artur Rojek wrote:
Add documentation for the ingenic-battery driver, used on JZ47xx SoCs.

 Signed-off-by: Artur Rojek <contact@xxxxxxxxxxxxxx>
 ---
.../bindings/power/supply/ingenic,battery.txt | 31 +++++++++++++++++++
  1 file changed, 31 insertions(+)
create mode 100644 Documentation/devicetree/bindings/power/supply/ingenic,battery.txt

diff --git a/Documentation/devicetree/bindings/power/supply/ingenic,battery.txt b/Documentation/devicetree/bindings/power/supply/ingenic,battery.txt
 new file mode 100644
 index 000000000000..66430bf73815
 --- /dev/null
+++ b/Documentation/devicetree/bindings/power/supply/ingenic,battery.txt
 @@ -0,0 +1,31 @@
 +* Ingenic JZ47xx battery bindings
 +
 +Required properties:
 +
 +- compatible: Must be "ingenic,jz4740-battery".
 +- io-channels: phandle and IIO specifier pair to the IIO device.
 +  Format described in iio-bindings.txt.
 +- monitored-battery: phandle to a "simple-battery" compatible node.
 +
+The "monitored-battery" property must be a phandle to a node using the format +described in battery.txt, with the following properties being required:
 +
 +- voltage-min-design-microvolt: Drained battery voltage.
 +- voltage-max-design-microvolt: Fully charged battery voltage.
 +
 +Example:
 +
 +#include <dt-bindings/iio/adc/ingenic,adc.h>
 +
 +simple_battery: battery {
 +	compatible = "simple-battery";
 +	voltage-min-design-microvolt = <3600000>;
 +	voltage-max-design-microvolt = <4200000>;
 +};
 +
 +ingenic_battery {
 +	compatible = "ingenic,jz4740-battery";
 +	io-channels = <&adc INGENIC_ADC_BATTERY>;
 +	io-channel-names = "battery";
 +	monitored-battery = <&simple_battery>;

Isn't this just an ADC monitored battery? What's specific to JZ4740?

Maybe a generic binding is appropriate here?

Rob

There is no generic driver, is there? The generic-adc-battery driver
isn't OF-compatible and looks like dead code (nothing uses it).

-Paul





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