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 [thread overview]
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
next prev parent reply other threads:[~2019-06-28 5:20 UTC|newest]
Thread overview: 48+ 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
2019-06-28 9:30 ` Harish Jenny K N
2019-07-04 5:01 ` Harish Jenny K N
2019-07-04 5:01 ` Harish Jenny K N
2019-07-08 22:36 ` Rob Herring
2019-07-08 22:36 ` Rob Herring
2019-07-09 5:25 ` Harish Jenny K N
2019-07-09 5:25 ` Harish Jenny K N
2019-07-09 16:08 ` Rob Herring
2019-07-09 16:08 ` Rob Herring
2019-07-10 8:28 ` Harish Jenny K N
2019-07-10 8:28 ` Harish Jenny K N
2019-07-17 13:51 ` Harish Jenny K N
2019-07-17 13:51 ` Harish Jenny K N
2019-07-29 11:07 ` Harish Jenny K N
2019-07-29 11:07 ` Harish Jenny K N
2019-08-05 11:15 ` Linus Walleij
2019-08-05 11:15 ` Linus Walleij
2019-08-09 14:08 ` Rob Herring
2019-08-09 14:08 ` Rob Herring
2019-08-10 8:51 ` Linus Walleij
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
2019-09-04 4:58 ` Harish Jenny K N
2019-09-10 7:47 ` Rob Herring
2019-09-10 7:47 ` Rob Herring
2019-09-11 12:52 ` Harish Jenny K N
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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