[PATCH] dt-bindings: power: supply: sc27xx-fg: add low voltage alarm IRQ

From: Stanislav Jakubek
Date: Thu Aug 15 2024 - 06:41:47 EST


The SC27XX fuel gauge supports a low voltage alarm IRQ, which is used
for more accurate battery capacity measurements with lower voltages.

This was unfortunately never documented in bindings, do so now.

Signed-off-by: Stanislav Jakubek <stano.jakubek@xxxxxxxxx>
---
Initial Linux driver submission adding this feature:
https://lore.kernel.org/lkml/ee1dd39f126bd03fb88381de9663d32df994d341.1542185618.git.baolin.wang@xxxxxxxxxx/

The only in-tree user (sc2731.dtsi) has had interrupts specified since its
initial fuel-gauge submission:
https://lore.kernel.org/lkml/4f66af3b47ba241380f8092e08879aca6d7c35b3.1548052878.git.baolin.wang@xxxxxxxxxx/

.../devicetree/bindings/power/supply/sc27xx-fg.yaml | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/power/supply/sc27xx-fg.yaml b/Documentation/devicetree/bindings/power/supply/sc27xx-fg.yaml
index de43e45a43b7..9108a2841caf 100644
--- a/Documentation/devicetree/bindings/power/supply/sc27xx-fg.yaml
+++ b/Documentation/devicetree/bindings/power/supply/sc27xx-fg.yaml
@@ -27,6 +27,9 @@ properties:
battery-detect-gpios:
maxItems: 1

+ interrupts:
+ maxItems: 1
+
io-channels:
items:
- description: Battery Temperature ADC
@@ -53,6 +56,7 @@ required:
- compatible
- reg
- battery-detect-gpios
+ - interrupts
- io-channels
- io-channel-names
- nvmem-cells
@@ -88,6 +92,8 @@ examples:
compatible = "sprd,sc2731-fgu";
reg = <0xa00>;
battery-detect-gpios = <&pmic_eic 9 GPIO_ACTIVE_HIGH>;
+ interrupt-parent = <&sc2731_pmic>;
+ interrupts = <4>;
io-channels = <&pmic_adc 5>, <&pmic_adc 14>;
io-channel-names = "bat-temp", "charge-vol";
nvmem-cells = <&fgu_calib>;
--
2.34.1