linux-kernel - [PATCH v4 01/19] dt-bindings: mfd: mediatek: mt6397: Add accdet subnode

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Message-Id: <20250305-mt6359-accdet-dts-v4-1-e5ffa5ee9991@collabora.com>
Date: Wed, 05 Mar 2025 15:58:16 -0300
From: Nícolas F. R. A. Prado <nfraprado@...labora.com>
To: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
 Sen Chu <sen.chu@...iatek.com>, Sean Wang <sean.wang@...iatek.com>, 
 Macpaul Lin <macpaul.lin@...iatek.com>, Lee Jones <lee@...nel.org>, 
 Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>, 
 Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>
Cc: kernel@...labora.com, linux-sound@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org, 
 linux-pm@...r.kernel.org, 
 Nícolas F. R. A. Prado <nfraprado@...labora.com>
Subject: [PATCH v4 01/19] dt-bindings: mfd: mediatek: mt6397: Add accdet
 subnode

Describe the accessory detection (accdet) module as a possible subnode
of the MT6359 PMIC.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
---
 .../devicetree/bindings/mfd/mediatek,mt6397.yaml   | 51 ++++++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/mediatek,mt6397.yaml b/Documentation/devicetree/bindings/mfd/mediatek,mt6397.yaml
index 6a89b479d10fad3c8b61cab5a3af1453baca4d1a..51012b8bbfaef3df7bdb619a4f8d828d6f9cc15a 100644
--- a/Documentation/devicetree/bindings/mfd/mediatek,mt6397.yaml
+++ b/Documentation/devicetree/bindings/mfd/mediatek,mt6397.yaml
@@ -24,6 +24,7 @@ description: |
   - LED
   - Keys
   - Power controller
+  - Accessory Detection

   It is interfaced to host controller using SPI interface by a proprietary hardware
   called PMIC wrapper or pwrap. MT6397/MT6323 PMIC is a child device of pwrap.
@@ -224,6 +225,30 @@ properties:
     description:
       Pin controller

+  accdet:
+    type: object
+    additionalProperties: false
+    description:
+      The Accessory Detection module found on the PMIC allows detecting audio
+      jack insertion and removal, as well as identifying the type of events
+      connected to the jack.
+
+    properties:
+      compatible:
+        const: mediatek,mt6359-accdet
+
+      mediatek,hp-eint-high:
+        type: boolean
+        description:
+          By default, MT6359's HP_EINT pin is assumed to be pulled high and
+          connected to a normally open 3.5mm jack. Plug insertion is detected
+          when the pin is brought low in that case. Add this property if the
+          behavior should be inverted, for example if a normally closed 3.5mm
+          jack is used, or if the line is pulled low on open.
+
+    required:
+      - compatible
+
 required:
   - compatible
   - regulators
@@ -598,3 +623,29 @@ examples:
             compatible = "mediatek,mt6397-rtc";
         };
     };
+  - |
+    #include <dt-bindings/input/input.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    pmic {
+        compatible = "mediatek,mt6359";
+        interrupt-controller;
+        #interrupt-cells = <2>;
+
+        accdet {
+            compatible = "mediatek,mt6359-accdet";
+            mediatek,hp-eint-high;
+        };
+
+        regulators {
+            compatible = "mediatek,mt6359-regulator";
+
+            buck_vs1 {
+                    regulator-name = "vs1";
+                    regulator-min-microvolt = <800000>;
+                    regulator-max-microvolt = <2200000>;
+                    regulator-enable-ramp-delay = <0>;
+                    regulator-always-on;
+            };
+        };
+    };

-- 
2.48.1