From: Martyn Welch <martyn.welch@collabora.co.uk> To: Arnd Bergmann <arnd@arndb.de>, Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>, Mark Rutland <mark.rutland@arm.com>, Ian Campbell <ijc+devicetree@hellion.org.uk>, Kumar Gala <galak@codeaurora.org>, Russell King <linux@arm.linux.org.uk>, Kukjin Kim <kgene@kernel.org>, Krzysztof Kozlowski <k.kozlowski@samsung.com>, Martyn Welch <martyn.welch@collabora.co.uk>, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, Olof Johansson <olof@lixom.net> Subject: [PATCH 1/3] Device tree binding documentation for gpio-switch Date: Fri, 4 Dec 2015 17:31:13 +0000 [thread overview] Message-ID: <1449250275-23435-2-git-send-email-martyn.welch@collabora.co.uk> (raw) In-Reply-To: <1449250275-23435-1-git-send-email-martyn.welch@collabora.co.uk> This patch adds documentation for the gpio-switch binding. This binding provides a mechanism to bind named links to gpio, with the primary purpose of enabling standardised access to switches that might be standard across a group of devices but implemented differently on each device. Signed-off-by: Martyn Welch <martyn.welch@collabora.co.uk> --- .../devicetree/bindings/misc/gpio-switch.txt | 47 ++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 Documentation/devicetree/bindings/misc/gpio-switch.txt diff --git a/Documentation/devicetree/bindings/misc/gpio-switch.txt b/Documentation/devicetree/bindings/misc/gpio-switch.txt new file mode 100644 index 0000000..13528bd --- /dev/null +++ b/Documentation/devicetree/bindings/misc/gpio-switch.txt @@ -0,0 +1,47 @@ +Device-Tree bindings for gpio attached switches. + +This provides a mechanism to provide a named link to specified gpios. This can +be useful in instances such as when theres a need to monitor a switch, which is +common across a family of devices, but attached to different gpios and even +implemented in different ways on differnet devices. + +Required properties: + - compatible = "gpio-switch"; + +Each signal is represented as a sub-node of "gpio-switch". The naming of +sub-nodes is arbitrary. + +Required sub-node properties: + + - label: Name to be given to gpio switch. + - gpios: OF device-tree gpio specification. + +Optional sub-node properties: + + - read-only: Boolean flag to mark the gpio as read-only, i.e. the line + should not be driven by the host. + +Example nodes: + + gpio-switch { + compatible = "gpio-switch"; + + write-protect { + label = "write-protect"; + gpios = <&gpx3 0 GPIO_ACTIVE_LOW>; + read-only; + }; + + developer-switch { + label = "developer-switch"; + gpios = <&gpx1 3 GPIO_ACTIVE_HIGH>; + read-only; + }; + + recovery-switch { + label = "recovery-switch"; + gpios = <&gpx0 7 GPIO_ACTIVE_LOW>; + read-only; + }; + }; + -- 2.1.4
WARNING: multiple messages have this Message-ID (diff)
From: martyn.welch@collabora.co.uk (Martyn Welch) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 1/3] Device tree binding documentation for gpio-switch Date: Fri, 4 Dec 2015 17:31:13 +0000 [thread overview] Message-ID: <1449250275-23435-2-git-send-email-martyn.welch@collabora.co.uk> (raw) In-Reply-To: <1449250275-23435-1-git-send-email-martyn.welch@collabora.co.uk> This patch adds documentation for the gpio-switch binding. This binding provides a mechanism to bind named links to gpio, with the primary purpose of enabling standardised access to switches that might be standard across a group of devices but implemented differently on each device. Signed-off-by: Martyn Welch <martyn.welch@collabora.co.uk> --- .../devicetree/bindings/misc/gpio-switch.txt | 47 ++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 Documentation/devicetree/bindings/misc/gpio-switch.txt diff --git a/Documentation/devicetree/bindings/misc/gpio-switch.txt b/Documentation/devicetree/bindings/misc/gpio-switch.txt new file mode 100644 index 0000000..13528bd --- /dev/null +++ b/Documentation/devicetree/bindings/misc/gpio-switch.txt @@ -0,0 +1,47 @@ +Device-Tree bindings for gpio attached switches. + +This provides a mechanism to provide a named link to specified gpios. This can +be useful in instances such as when theres a need to monitor a switch, which is +common across a family of devices, but attached to different gpios and even +implemented in different ways on differnet devices. + +Required properties: + - compatible = "gpio-switch"; + +Each signal is represented as a sub-node of "gpio-switch". The naming of +sub-nodes is arbitrary. + +Required sub-node properties: + + - label: Name to be given to gpio switch. + - gpios: OF device-tree gpio specification. + +Optional sub-node properties: + + - read-only: Boolean flag to mark the gpio as read-only, i.e. the line + should not be driven by the host. + +Example nodes: + + gpio-switch { + compatible = "gpio-switch"; + + write-protect { + label = "write-protect"; + gpios = <&gpx3 0 GPIO_ACTIVE_LOW>; + read-only; + }; + + developer-switch { + label = "developer-switch"; + gpios = <&gpx1 3 GPIO_ACTIVE_HIGH>; + read-only; + }; + + recovery-switch { + label = "recovery-switch"; + gpios = <&gpx0 7 GPIO_ACTIVE_LOW>; + read-only; + }; + }; + -- 2.1.4
next prev parent reply other threads:[~2015-12-04 17:31 UTC|newest] Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-12-04 17:31 Add support for monitoring gpio switches Martyn Welch 2015-12-04 17:31 ` Martyn Welch 2015-12-04 17:31 ` Martyn Welch 2015-12-04 17:31 ` Martyn Welch [this message] 2015-12-04 17:31 ` [PATCH 1/3] Device tree binding documentation for gpio-switch Martyn Welch 2015-12-07 17:37 ` Rob Herring 2015-12-07 17:37 ` Rob Herring 2015-12-07 21:10 ` Martyn Welch 2015-12-07 21:10 ` Martyn Welch 2015-12-11 12:39 ` Linus Walleij 2015-12-11 12:39 ` Linus Walleij 2015-12-11 12:39 ` Linus Walleij 2015-12-11 14:06 ` Rob Herring 2015-12-11 14:06 ` Rob Herring 2015-12-11 14:06 ` Rob Herring 2015-12-14 14:28 ` Linus Walleij 2015-12-14 14:28 ` Linus Walleij 2015-12-14 14:28 ` Linus Walleij 2015-12-14 15:45 ` Rob Herring 2015-12-14 15:45 ` Rob Herring 2015-12-14 15:45 ` Rob Herring 2015-12-15 9:09 ` Markus Pargmann 2015-12-15 9:09 ` Markus Pargmann 2016-03-02 16:03 ` Rob Herring 2016-03-02 16:03 ` Rob Herring 2016-03-02 16:03 ` Rob Herring 2016-03-07 8:26 ` Markus Pargmann 2016-03-07 8:26 ` Markus Pargmann 2016-03-07 8:26 ` Markus Pargmann 2015-12-04 17:31 ` [PATCH 2/3] Add support for monitoring gpio switches Martyn Welch 2015-12-04 17:31 ` Martyn Welch 2015-12-04 17:31 ` Martyn Welch 2015-12-04 18:14 ` [PATCH] fix noderef.cocci warnings kbuild test robot 2015-12-04 18:14 ` kbuild test robot 2015-12-04 18:14 ` kbuild test robot 2015-12-04 18:14 ` [PATCH 2/3] Add support for monitoring gpio switches kbuild test robot 2015-12-04 18:14 ` kbuild test robot 2015-12-04 18:14 ` kbuild test robot 2015-12-04 18:57 ` Greg Kroah-Hartman 2015-12-04 18:57 ` Greg Kroah-Hartman 2015-12-05 10:42 ` Martyn Welch 2015-12-05 10:42 ` Martyn Welch 2015-12-11 9:08 ` Linus Walleij 2015-12-11 9:08 ` Linus Walleij 2015-12-11 9:08 ` Linus Walleij 2015-12-16 10:11 ` Martyn Welch 2015-12-16 10:11 ` Martyn Welch 2015-12-16 10:11 ` Martyn Welch 2015-12-22 9:25 ` Linus Walleij 2015-12-22 9:25 ` Linus Walleij 2015-12-22 9:25 ` Linus Walleij 2015-12-04 17:31 ` [PATCH 3/3] ARM: dts: Addition of binding for gpio switches on peach-pi Martyn Welch 2015-12-04 17:31 ` Martyn Welch
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