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Date:   Tue, 06 Jun 2023 07:25:34 +0000
To:     linux-kernel@vger.kernel.org
From:   Raymond Hackley <raymondhackley@protonmail.com>
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
        "David S . Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Rob Herring <robh+dt@kernel.org>,
        Liam Girdwood <lgirdwood@gmail.com>,
        Mark Brown <broonie@kernel.org>,
        Michael Walle <michael@walle.cc>,
        =?utf-8?Q?Uwe_Kleine-K=C3=B6nig?= <u.kleine-koenig@pengutronix.de>,
        Jeremy Kerr <jk@codeconstruct.com.au>,
        Raymond Hackley <raymondhackley@protonmail.com>,
        netdev@vger.kernel.org, devicetree@vger.kernel.org
Subject: [PATCH 1/2] dt-bindings: nfc: nxp-nci: document pvdd-supply
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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@protonmail.com>
---
 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/Docum=
entation/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
=20
+  pvdd-supply:
+    description: |
+      Optional regulator that provides pad supply voltage for some
+      controllers
+
   interrupts:
     maxItems: 1
=20
--=20
2.30.2