Linux-GPIO Archive on lore.kernel.org
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From: Harish Jenny K N <harish_kandiga@mentor.com>
To: Linus Walleij <linus.walleij@linaro.org>,
	Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: <linux-gpio@vger.kernel.org>,
	Harish Jenny K N <harish_kandiga@mentor.com>,
	Balasubramani Vivekanandan 
	<balasubramani_vivekanandan@mentor.com>
Subject: [PATCH V4 2/2] gpio: inverter: document the inverter bindings
Date: Fri, 28 Jun 2019 10:50:36 +0530
Message-ID: <1561699236-18620-3-git-send-email-harish_kandiga@mentor.com> (raw)
In-Reply-To: <1561699236-18620-1-git-send-email-harish_kandiga@mentor.com>

Document the device tree binding for the inverter gpio
controller to configure the polarity of the gpio pins
used by the consumers.

Signed-off-by: Harish Jenny K N <harish_kandiga@mentor.com>
---
 .../devicetree/bindings/gpio/gpio-inverter.txt     | 29 ++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/gpio-inverter.txt

diff --git a/Documentation/devicetree/bindings/gpio/gpio-inverter.txt b/Documentation/devicetree/bindings/gpio/gpio-inverter.txt
new file mode 100644
index 0000000..8bb6b2e
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-inverter.txt
@@ -0,0 +1,29 @@
+GPIO-INVERTER
+======
+This binding defines the gpio-inverter. The gpio-inverter is a driver that
+allows to properly describe the gpio polarities on the hardware.
+
+Please refer to gpio.txt for generic information regarding GPIO bindings.
+
+Required properties:
+- compatible : "gpio-inverter".
+- gpio-controller: Marks the port as GPIO controller.
+- #gpio-cells: One. This is the pin number.
+- inverted-gpios: Array of GPIO pins required from consumers, whose polarity
+  has to be inverted in the driver.
+Note: gpio flag should be set as GPIO_ACTIVE_HIGH. Using GPIO_ACTICE_LOW will
+cause double inversion.
+
+Optional properties:
+- gpio-line-names: Refer to gpio.txt for details regarding this property.
+
+Example:
+
+gpio_inv: gpio-inv {
+	compatible = "gpio-inverter";
+	gpio-controller;
+	#gpio-cells = <1>;
+	inverted-gpios = <&gpio5 24 GPIO_ACTIVE_HIGH>,
+	<&gpio7 0 GPIO_ACTIVE_HIGH>, <&gpio7 1 GPIO_ACTIVE_HIGH>;
+	gpio-line-names = "JTAG_DNL_EN", "lvds-pwrdwn", "lcd-on";
+};
--
2.7.4


  parent reply index

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-28  5:20 [PATCH V4 0/2] Add Inverter controller for gpio configuration Harish Jenny K N
2019-06-28  5:20 ` [PATCH V4 1/2] gpio: inverter: " Harish Jenny K N
2019-06-28  8:55   ` Linus Walleij
2019-06-28  9:15     ` Harish Jenny K N
2019-06-28  9:22       ` Linus Walleij
2019-06-28  5:20 ` Harish Jenny K N [this message]
2019-06-28  9:30 [PATCH V4 2/2] gpio: inverter: document the inverter bindings Harish Jenny K N
2019-07-04  5:01 ` Harish Jenny K N
2019-07-08 22:36 ` Rob Herring
2019-07-09  5:25   ` Harish Jenny K N
2019-07-09 16:08     ` Rob Herring
2019-07-10  8:28       ` Harish Jenny K N
2019-07-17 13:51         ` Harish Jenny K N
2019-07-29 11:07           ` Harish Jenny K N
2019-08-05 11:15         ` Linus Walleij
2019-08-09 14:08           ` Rob Herring
2019-08-10  8:51             ` Linus Walleij
2019-08-19  9:36               ` Harish Jenny K N
2019-08-27  7:47                 ` Harish Jenny K N
2019-08-30  5:21                   ` Harish Jenny K N
2019-09-04  4:58                     ` Harish Jenny K N
2019-09-10  7:47                       ` Rob Herring
2019-09-11 12:52                         ` Harish Jenny K N
2019-09-25 16:51 ` Eugeniu Rosca
2019-09-27  5:52   ` Phil Reid
2019-09-27  9:07   ` Geert Uytterhoeven
2019-10-05 13:07     ` Eugeniu Rosca
2019-10-07  8:18       ` Geert Uytterhoeven
2019-10-11  4:35         ` Harish Jenny K N
2019-11-12 11:52           ` Harish Jenny K N
2019-11-12 12:19             ` Geert Uytterhoeven
2019-10-04 19:07   ` Stephen Warren
2019-10-05 17:50     ` Eugeniu Rosca
2019-10-07 15:36       ` Stephen Warren

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