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dt-binding: Add ngpios property to GPIO controller node

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Add ngpios property to the gpio controller's DT node so that controller
driver extracts total number of in-use gpio lines from DT and removes
dependency on driver.

Signed-off-by: Pramod Kumar <pramodku@broadcom.com>
Reviewed-by: Ray Jui <rjui@broadcom.com>
Reviewed-by: Scott Branden <sbranden@broadcom.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Pramod Kumar 2015-11-19 09:22:13 +05:30 committed by Linus Walleij
parent b04a23b056
commit 2652df631c
1 changed files with 5 additions and 0 deletions
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5
Documentation/devicetree/bindings/pinctrl/brcm,cygnus-gpio.txt
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@ -10,6 +10,9 @@ Required properties:
Define the base and range of the I/O address space that contains the Cygnus
GPIO/PINCONF controller registers
- ngpios:
Total number of in-use slots in GPIO controller
- #gpio-cells:
Must be two. The first cell is the GPIO pin number (within the
controller's pin space) and the second cell is used for the following:
@ -57,6 +60,7 @@ Example:
compatible = "brcm,cygnus-ccm-gpio";
reg = <0x1800a000 0x50>,
<0x0301d164 0x20>;
ngpios = <24>;
#gpio-cells = <2>;
gpio-controller;
interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>;
@ -78,6 +82,7 @@ Example:
gpio_asiu: gpio@180a5000 {
compatible = "brcm,cygnus-asiu-gpio";
reg = <0x180a5000 0x668>;
ngpios = <146>;
#gpio-cells = <2>;
gpio-controller;
interrupts = <GIC_SPI 174 IRQ_TYPE_LEVEL_HIGH>;