From mboxrd@z Thu Jan 1 00:00:00 1970 From: Linus Walleij Subject: [PATCH 3/3] spi: spi-gpio: Augment device tree bindings Date: Mon, 12 Feb 2018 13:45:32 +0100 Message-ID: <20180212124532.25776-4-linus.walleij@linaro.org> References: <20180212124532.25776-1-linus.walleij@linaro.org> Return-path: Received: from mail-lf0-f67.google.com ([209.85.215.67]:33572 "EHLO mail-lf0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934681AbeBLMpt (ORCPT ); Mon, 12 Feb 2018 07:45:49 -0500 Received: by mail-lf0-f67.google.com with SMTP id j193so4289011lfe.0 for ; Mon, 12 Feb 2018 04:45:49 -0800 (PST) In-Reply-To: <20180212124532.25776-1-linus.walleij@linaro.org> Sender: linux-gpio-owner@vger.kernel.org List-Id: linux-gpio@vger.kernel.org To: Mark Brown , linux-spi@vger.kernel.org Cc: linux-gpio@vger.kernel.org, Linus Walleij , devicetree@vger.kernel.org, Rob Herring After we augmented the core to handle "gpio-sck"/"sck-gpios", "gpio-mosi"/"mosi-gpios", "gpio-miso"/"miso-gpios" alike, deprecate the old binding and put the strict modern and recommended binding practice into place as the default for GPIO-based SPI. This reflects the similar change in I2C: commit 7d29f509d2cf ("dt-bindings: i2c: i2c-gpio: Add support for named gpios") Cc: devicetree@vger.kernel.org Cc: Rob Herring Signed-off-by: Linus Walleij --- Documentation/devicetree/bindings/spi/spi-gpio.txt | 24 ++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-) diff --git a/Documentation/devicetree/bindings/spi/spi-gpio.txt b/Documentation/devicetree/bindings/spi/spi-gpio.txt index a95603bcf6ff..52db562f17a4 100644 --- a/Documentation/devicetree/bindings/spi/spi-gpio.txt +++ b/Documentation/devicetree/bindings/spi/spi-gpio.txt @@ -1,18 +1,30 @@ SPI-GPIO devicetree bindings +This represents a group of 3-n GPIO lines used for bit-banged SPI on dedicated +GPIO lines. + Required properties: - compatible: should be set to "spi-gpio" - #address-cells: should be set to <0x1> - ranges - - gpio-sck: GPIO spec for the SCK line to use - - gpio-miso: GPIO spec for the MISO line to use - - gpio-mosi: GPIO spec for the MOSI line to use + - sck-gpios: GPIO spec for the SCK line to use + - miso-gpios: GPIO spec for the MISO line to use + - mosi-gpios: GPIO spec for the MOSI line to use - cs-gpios: GPIOs to use for chipselect lines. Not needed if num-chipselects = <0>. - num-chipselects: Number of chipselect lines. Should be <0> if a single device with no chip select is connected. +Deprecated bindings: + +These legacy GPIO line bindings can alternatively be used to define the +GPIO lines used, they should not be used in new device trees. + + - gpio-sck: GPIO spec for the SCK line to use + - gpio-miso: GPIO spec for the MISO line to use + - gpio-mosi: GPIO spec for the MOSI line to use + Example: spi { @@ -20,9 +32,9 @@ Example: #address-cells = <0x1>; ranges; - gpio-sck = <&gpio 95 0>; - gpio-miso = <&gpio 98 0>; - gpio-mosi = <&gpio 97 0>; + sck-gpios = <&gpio 95 0>; + miso-gpios = <&gpio 98 0>; + mosi-gpios = <&gpio 97 0>; cs-gpios = <&gpio 125 0>; num-chipselects = <1>; -- 2.14.3