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[91.46.97.132]) by smtp.googlemail.com with ESMTPSA id w9sm6146449wme.19.2016.05.06.04.10.24 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 06 May 2016 04:10:24 -0700 (PDT) Received: from chuck by debian64.daheim with local (Exim 4.87) (envelope-from ) id 1aydeJ-0006Cg-FR; Fri, 06 May 2016 13:10:23 +0200 From: Christian Lamparter To: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Christian Lamparter , =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= , Kumar Gala , Alexander Shiyan , Ian Campbell , Mark Rutland , Pawel Moll , Rob Herring , Alexandre Courbot , Linus Walleij , Andy Shevchenko Subject: [PATCH v7 1/3] gpio: dt-bindings: add wd,mbl-gpio bindings Date: Fri, 6 May 2016 13:10:19 +0200 Message-Id: <9bc9349d6e13d81c6200b0cd8fa20c76263043f6.1462372360.git.chunkeey@googlemail.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: References: In-Reply-To: References: Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This patch adds the device tree bindings for the Western Digital's MyBook Live memory-mapped GPIO controllers. The gpios will be supported by gpio-mmio code of the GPIO generic library. Acked-by: Rob Herring Signed-off-by: Christian Lamparter --- .../devicetree/bindings/gpio/wd,mbl-gpio.txt | 38 ++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/wd,mbl-gpio.txt diff --git a/Documentation/devicetree/bindings/gpio/wd,mbl-gpio.txt b/Documentation/devicetree/bindings/gpio/wd,mbl-gpio.txt new file mode 100644 index 0000000..038c3a6 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/wd,mbl-gpio.txt @@ -0,0 +1,38 @@ +Bindings for the Western Digital's MyBook Live memory-mapped GPIO controllers. + +The Western Digital MyBook Live has two memory-mapped GPIO controllers. +Both GPIO controller only have a single 8-bit data register, where GPIO +state can be read and/or written. + +Required properties: + - compatible: should be "wd,mbl-gpio" + - reg-names: must contain + "dat" - data register + - reg: address + size pairs describing the GPIO register sets; + order must correspond with the order of entries in reg-names + - #gpio-cells: must be set to 2. The first cell is the pin number and + the second cell is used to specify the GPIO polarity: + 0 = active high + 1 = active low + - gpio-controller: marks the device node as a GPIO controller. + +Optional properties: + - no-output: GPIOs are read-only. + +Examples: + GPIO0: gpio0@e0000000 { + compatible = "wd,mbl-gpio"; + reg-names = "dat"; + reg = <0xe0000000 0x1>; + #gpio-cells = <2>; + gpio-controller; + }; + + GPIO1: gpio1@e0100000 { + compatible = "wd,mbl-gpio"; + reg-names = "dat"; + reg = <0xe0100000 0x1>; + #gpio-cells = <2>; + gpio-controller; + no-output; + };