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received-spf: None (protection.outlook.com: microchip.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: Q22N84UZXWMSTXHMgYa24MVGjM/QuEaIkM7KidWHDfyDj7U4oRzNyWoFop3mwuIHvRalPUsWTnYxZx+dN4Ge+4/ymhzXTqTbUKiwgecoNVunHR/gTCrG8Sf0tC8GEKHxwNNqJxm0wc1/RZyKRQCob2cBO/9Lr1rGzkB8Gc5MXFDTFLyLwIYKUS0oHLzyVFRQCMi5W1bjqrmKzkr6Ot0lxJ0yKUJYDv72ZQPIWlIX/leV78wIR84uUou9OOcjMeKdevYZaKbsl407seLSJ+yiqCOw2CSf0h6cFQF/hO+qhfGXc7WfBIrzOETQxK8m+QYT9w45EXDKEpCyv1VBTdJ59/ju4XnYnYRkRwh2nL0+03k= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 50511eff-ca72-4852-60f2-08d64ebf5efc X-MS-Exchange-CrossTenant-originalarrivaltime: 20 Nov 2018 08:08:36.2884 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3f4057f3-b418-4d4e-ba84-d55b4e897d88 X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR1101MB2260 X-OriginatorOrg: microchip.com Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch describes the compatible and the device tree bindings necessary for the SAMA5D2 PIOBU GPIO. Signed-off-by: Andrei Stefanescu --- .../bindings/gpio/gpio-sama5d2-piobu.txt | 31 ++++++++++++++++++= ++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-sama5d2-pio= bu.txt diff --git a/Documentation/devicetree/bindings/gpio/gpio-sama5d2-piobu.txt = b/Documentation/devicetree/bindings/gpio/gpio-sama5d2-piobu.txt new file mode 100644 index 0000000..2e260e1 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-sama5d2-piobu.txt @@ -0,0 +1,31 @@ +GPIO controller for SAMA5D2 PIOBU pins. + +These pins have the property of not losing their voltage +during Backup/Self-refresh mode. + +These bindings should be set to a node in the dtsi file. + +Required properties: +- compatible: "syscon", "microchip,sama5d2-piobu" +- #gpio-cells: There are 2. The pin number is the + first, the second represents additional + parameters such as GPIO_ACTIVE_HIGH/LOW. +- gpio-controller: Marks the port as GPIO controller. + +Note that the driver uses syscon and should be the child of +the syscon node. + +Example: + + secumod@fc040000 { + compatible =3D "atmel,sama5d2-secumod", "syscon", "simple-mfd"; + status =3D "okay"; + reg =3D <0xfc040000 0x100>; + + pioBU: piobu { + status =3D "okay"; + compatible =3D "microchip,sama5d2-piobu"; + gpio-controller; + #gpio-cells =3D <2>; + }; + }; --=20 2.7.4