linux-kernel - [PATCH 1/3] dt-bindings: mfd: Add power-button option for TI TPS6594 PMIC

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Message-Id: <20250520-linux-stable-tps6594-pwrbutton-v1-1-0cc5c6e0415c@criticallink.com>
Date: Tue, 20 May 2025 13:43:36 -0400
From: Job Sava <jsava@...ticallink.com>
To: Lee Jones <lee@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Julien Panis <jpanis@...libre.com>, 
 Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-input@...r.kernel.org, jcormier@...ticallink.com, 
 Job Sava <jsava@...ticallink.com>
Subject: [PATCH 1/3] dt-bindings: mfd: Add power-button option for TI
 TPS6594 PMIC

The TPS6594 power-button option permits users to enter STANDBY or
ACTIVE state by a push, release, or short push button request.

Signed-off-by: Job Sava <jsava@...ticallink.com>
---
 Documentation/devicetree/bindings/mfd/ti,tps6594.yaml | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/ti,tps6594.yaml b/Documentation/devicetree/bindings/mfd/ti,tps6594.yaml
index 6341b6070366..a40808fd2747 100644
--- a/Documentation/devicetree/bindings/mfd/ti,tps6594.yaml
+++ b/Documentation/devicetree/bindings/mfd/ti,tps6594.yaml
@@ -37,6 +37,21 @@ properties:
       device on the SPMI bus, and the secondary PMICs are the target devices
       on the SPMI bus.
 
+  ti,power-button:
+    type: boolean
+    description: |
+      Optional property that sets the EN/PB/VSENSE pin to be a
+      power-button.
+      TPS6594 has a multipurpose pin called EN/PB/VSENSE that can be either
+      1. EN in which case it functions as an enable pin.
+      2. VSENSE which compares the voltages and triggers an automatic
+      on/off request.
+      3. PB in which case it can be configured to trigger an interrupt
+      to the SoC.
+      ti,power-button reflects the last one of those options
+      where the board has a button wired to the pin and triggers
+      an interrupt on pressing it.
+
   system-power-controller: true
 
   gpio-controller: true

-- 
2.43.0