From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Crispin Subject: Re: [PATCH 1/2] DT: Add documentation for gpio-rt2880 Date: Fri, 10 Oct 2014 15:31:48 +0200 Message-ID: <5437DFC4.3000808@openwrt.org> References: <1412885241-12476-1-git-send-email-blogic@openwrt.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from arrakis.dune.hu ([78.24.191.176]:40834 "EHLO arrakis.dune.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751621AbaJJNbz (ORCPT ); Fri, 10 Oct 2014 09:31:55 -0400 In-Reply-To: <1412885241-12476-1-git-send-email-blogic@openwrt.org> Sender: linux-gpio-owner@vger.kernel.org List-Id: linux-gpio@vger.kernel.org To: Ralf Baechle , Linus Walleij Cc: linux-mips@linux-mips.org, linux-gpio@vger.kernel.org hi linus, ralf please ignore these 2 patches, i sent an old version. i will resend in a bit with the 2nd gpio driver and the ARCH_REQUIRE_GPIOLIB patch added. John On 09/10/2014 22:07, John Crispin wrote: > Describe gpio-rt2880 binding. > > Signed-off-by: John Crispin Cc: > linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: > linux-gpio@vger.kernel.org --- > .../devicetree/bindings/gpio/gpio-rt2880.txt | 40 > ++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode > 100644 Documentation/devicetree/bindings/gpio/gpio-rt2880.txt > > diff --git a/Documentation/devicetree/bindings/gpio/gpio-rt2880.txt > b/Documentation/devicetree/bindings/gpio/gpio-rt2880.txt new file > mode 100644 index 0000000..b4acf02 --- /dev/null +++ > b/Documentation/devicetree/bindings/gpio/gpio-rt2880.txt @@ -0,0 > +1,40 @@ +Ralink SoC GPIO controller bindings + +Required > properties: +- compatible: + - "ralink,rt2880-gpio" for Ralink > controllers +- #gpio-cells : Should be two. + - first cell is the > pin number + - second cell is used to specify optional parameters > (unused) +- gpio-controller : Marks the device node as a GPIO > controller +- reg : Physical base address and length of the > controller's registers +- interrupt-parent: phandle to the INTC > device node +- interrupts : Specify the INTC interrupt number +- > ralink,num-gpios : Specify the number of GPIOs +- > ralink,register-map : The register layout depends on the GPIO bank > and actual + SoC type. Register offsets need to be in this order. > + [ INT, EDGE, RENA, FENA, DATA, DIR, POL, SET, RESET, TOGGLE ] + > +Optional properties: +- ralink,gpio-base : Specify the GPIO chips > base number + +Example: + + gpio0: gpio@600 { + compatible = > "ralink,rt5350-gpio", "ralink,rt2880-gpio"; + + #gpio-cells = > <2>; + gpio-controller; + + reg = <0x600 0x34>; + + > interrupt-parent = <&intc>; + interrupts = <6>; + + > ralink,gpio-base = <0>; + ralink,num-gpios = <24>; + > ralink,register-map = [ 00 04 08 0c + 20 24 28 2c + 30 34 ]; > + + }; >