From mboxrd@z Thu Jan 1 00:00:00 1970 From: Linus Walleij Subject: [PATCH 3/5] spi: spi-gpio: Augment device tree bindings Date: Mon, 1 Jan 2018 14:37:47 +0100 Message-ID: <20180101133749.29567-4-linus.walleij@linaro.org> References: <20180101133749.29567-1-linus.walleij@linaro.org> Cc: Linus Walleij , Rob Herring To: Mark Brown , linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Return-path: In-Reply-To: <20180101133749.29567-1-linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> Sender: linux-spi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: 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. 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 -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html