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Message-ID: <Zr3SAHlq5A78QvrW@standask-GA-A55M-S2HP>
Date: Thu, 15 Aug 2024 12:01:36 +0200
From: Stanislav Jakubek <stano.jakubek@...il.com>
To: Sebastian Reichel <sre@...nel.org>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Orson Zhai <orsonzhai@...il.com>,
Baolin Wang <baolin.wang@...ux.alibaba.com>,
Chunyan Zhang <zhang.lyra@...il.com>
Cc: linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] dt-bindings: power: supply: sc27xx-fg: add low voltage alarm
IRQ
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@...il.com>
---
Initial Linux driver submission adding this feature:
https://lore.kernel.org/lkml/ee1dd39f126bd03fb88381de9663d32df994d341.1542185618.git.baolin.wang@linaro.org/
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@linaro.org/
.../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
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