This commit reviews and complete documentation for gpio related stuff
in the mt7621 device. It should be complete now.
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@xxxxxxxxx>
---
drivers/staging/mt7621-gpio/mediatek,mt7621-gpio.txt | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/mt7621-gpio/mediatek,mt7621-gpio.txt b/drivers/staging/mt7621-gpio/mediatek,mt7621-gpio.txt
index af64092..94caba7 100644
--- a/drivers/staging/mt7621-gpio/mediatek,mt7621-gpio.txt
+++ b/drivers/staging/mt7621-gpio/mediatek,mt7621-gpio.txt
@@ -13,15 +13,17 @@ Required properties for the top level node:
- "mediatek,mt7621-gpio" for Mediatek controllers
- reg : Physical base address and length of the controller's registers
- interrupt-parent : phandle of the parent interrupt controller.
-- interrupts = Interrupt specifier for the controllers interrupt
+- interrupts : Interrupt specifier for the controllers interrupt.
+- interrupt-controller : Mark the device node as an interrupt controller.
+- #interrupt-cells : Should be 1. The first cell is the GPIO number.
Required properties for the GPIO bank node:
- compatible:
- "mediatek,mt7621-gpio-bank" for Mediatek banks
-- #gpio-cells : Should be two.
- - first cell is the pin number
- - second cell is used to specify optional parameters (unused)
-- gpio-controller : Marks the device node as a GPIO controller
+- #gpio-cells : Should be two. The first cell is the GPIO pin number and the
+ second cell specifies GPIO flags, as defined in <dt-bindings/gpio/gpio.h>.
+ Only the GPIO_ACTIVE_HIGH and GPIO_ACTIVE_LOW flags are supported.
+- gpio-controller : Marks the device node as a GPIO controller.
- reg : The id of the bank that the node describes.
Example:
@@ -34,6 +36,8 @@ Example:
interrupt-parent = <&gic>;
interrupts = <GIC_SHARED 12 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-controller;
+ #interrupt-cells = <1>;
gpio0: bank@0 {
reg = <0>;
--
2.7.4
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