linux-kernel - [PATCH v2 1/2] dt-bindings: nfc: nxp-nci: document pvdd-supply

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Message-ID: <20230609154139.3566-1-raymondhackley@protonmail.com>
Date:   Fri, 09 Jun 2023 15:42:04 +0000
From:   Raymond Hackley <raymondhackley@...tonmail.com>
To:     linux-kernel@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Michael Walle <michael@...le.cc>,
        Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
        Jeremy Kerr <jk@...econstruct.com.au>,
        Raymond Hackley <raymondhackley@...tonmail.com>,
        netdev@...r.kernel.org, devicetree@...r.kernel.org
Subject: [PATCH v2 1/2] dt-bindings: nfc: nxp-nci: document pvdd-supply

PN547/553, QN310/330 chips on some devices require a pad supply voltage
(PVDD). Otherwise, the NFC won't power up.

Document support for pad supply voltage pvdd-supply that is enabled by
the nxp-nci driver so that the regulator gets enabled when needed.

Signed-off-by: Raymond Hackley <raymondhackley@...tonmail.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 Documentation/devicetree/bindings/net/nfc/nxp,nci.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/nfc/nxp,nci.yaml b/Documentation/devicetree/bindings/net/nfc/nxp,nci.yaml
index 6924aff0b2c5..d5a4f935c2ce 100644
--- a/Documentation/devicetree/bindings/net/nfc/nxp,nci.yaml
+++ b/Documentation/devicetree/bindings/net/nfc/nxp,nci.yaml
@@ -25,6 +25,11 @@ properties:
   firmware-gpios:
     description: Output GPIO pin used to enter firmware download mode
 
+  pvdd-supply:
+    description: |
+      Optional regulator that provides pad supply voltage for some
+      controllers
+
   interrupts:
     maxItems: 1
 
-- 
2.30.2