Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933932AbbHKI3B (ORCPT ); Tue, 11 Aug 2015 04:29:01 -0400 Received: from eusmtp01.atmel.com ([212.144.249.242]:49832 "EHLO eusmtp01.atmel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933820AbbHKI2z (ORCPT ); Tue, 11 Aug 2015 04:28:55 -0400 From: Ludovic Desroches To: , , , CC: , , , , Ludovic Desroches Subject: [PATCH 2/5] pinctrl: dt-binding: Add DT binding documentation for Atmel PIO4 Date: Tue, 11 Aug 2015 10:28:02 +0200 Message-ID: <1439281685-3020-3-git-send-email-ludovic.desroches@atmel.com> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1439281685-3020-1-git-send-email-ludovic.desroches@atmel.com> References: <1439281685-3020-1-git-send-email-ludovic.desroches@atmel.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3340 Lines: 113 Add documentation for the Atmel PIO4 controller introduced with SAMA5D2 chip family. Signed-off-by: Ludovic Desroches --- .../bindings/pinctrl/atmel,at91-pio4-pinctrl.txt | 90 ++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 Documentation/devicetree/bindings/pinctrl/atmel,at91-pio4-pinctrl.txt diff --git a/Documentation/devicetree/bindings/pinctrl/atmel,at91-pio4-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/atmel,at91-pio4-pinctrl.txt new file mode 100644 index 0000000..61ac757 --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/atmel,at91-pio4-pinctrl.txt @@ -0,0 +1,90 @@ +* Atmel PIO4 Controller + +The Atmel PIO4 controller is used to select the function of a pin and to +configure it. + +Required properties: +- compatible: "atmel,sama5d2-pinctrl". +- reg: base address and length of the PIO controller. +- interrupts: interrupt outputs from the controller, one for each bank. +- interrupt-controller: mark the device node as an interrupt controller. +- #interrupt-cells: should be two. +- gpio-controller: mark the device node as a gpio controller. +- #gpio-cells: should be two. + +Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for +a general description of GPIO and interrupt bindings. + +Please refer to pinctrl-bindings.txt in this directory for details of the +common pinctrl bindings used by client devices. + +Subnode format +Each node (or subnode) will list the pins it needs and how to configured these +pins. + + node { + pinmux = ; + GENERIC_PINCONFIG; + }; + +Required properties: +- pinmux: integer array. Each integer represents a pin number plus mux and +ioset settings. Use the macros from boot/dts/-pinfunc.h file to get the +right representation of the pin. + +Optional properties: +- GENERIC_PINCONFIG: generic pinconfig options to use, bias-disable, +bias-pull-down, bias-pull-up, drive-open-drain, input-schmitt-enable, +input-debounce, output-low, output-high. + +Example: + +#include + +... +{ + pioA: pinctrl@fc038000 { + compatible = "atmel,sama5d2-pinctrl"; + reg = <0xfc038000 0x600>; + interrupts = <18 IRQ_TYPE_LEVEL_HIGH 7>, + <68 IRQ_TYPE_LEVEL_HIGH 7>, + <69 IRQ_TYPE_LEVEL_HIGH 7>, + <70 IRQ_TYPE_LEVEL_HIGH 7>; + interrupt-controller; + #interrupt-cells = <2>; + gpio-controller; + #gpio-cells = <2>; + clocks = <&pioA_clk>; + + pinctrl_i2c0_default: i2c0_default { + pinmux = , + ; + bias-disable; + }; + + pinctrl_led_gpio_default: led_gpio_default { + pinmux = , + ; + bias-pull-up; + }; + + pinctrl_sdmmc1_default: sdmmc1_default { + cmd_data { + pinmux = , + , + , + , + ; + bias-pull-up; + }; + + ck_cd { + pinmux = , + ; + bias-disable; + }; + }; + ... + }; +}; +... -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/