diff options
Diffstat (limited to 'drivers/staging/mt7621-gpio/mediatek,mt7621-gpio.txt')
-rw-r--r-- | drivers/staging/mt7621-gpio/mediatek,mt7621-gpio.txt | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/drivers/staging/mt7621-gpio/mediatek,mt7621-gpio.txt b/drivers/staging/mt7621-gpio/mediatek,mt7621-gpio.txt deleted file mode 100644 index 30d8a0225aa1..000000000000 --- a/drivers/staging/mt7621-gpio/mediatek,mt7621-gpio.txt +++ /dev/null @@ -1,68 +0,0 @@ -Mediatek SoC GPIO controller bindings - -The IP core used inside these SoCs has 3 banks of 32 GPIOs each. -The registers of all the banks are interwoven inside one single IO range. -We load one GPIO controller instance per bank. To make this possible -we support 2 types of nodes. The parent node defines the memory I/O range and -has 3 children each describing a single bank. Also the GPIO controller can receive -interrupts on any of the GPIOs, either edge or level. It then interrupts the CPU -using GIC INT12. - -Required properties for the top level node: -- compatible: - - "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. -- interrupt-controller : Mark the device node as an interrupt controller. -- #interrupt-cells : Should be 2. The first cell defines the interrupt number. - The second cell bits[3:0] is used to specify trigger type as follows: - - 1 = low-to-high edge triggered. - - 2 = high-to-low edge triggered. - - 4 = active high level-sensitive. - - 8 = active low level-sensitive. - - -Required properties for the GPIO bank node: -- compatible: - - "mediatek,mt7621-gpio-bank" for Mediatek banks -- #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: - gpio@600 { - #address-cells = <1>; - #size-cells = <0>; - - compatible = "mediatek,mt7621-gpio"; - reg = <0x600 0x100>; - - interrupt-parent = <&gic>; - interrupts = <GIC_SHARED 12 IRQ_TYPE_LEVEL_HIGH>; - interrupt-controller; - #interrupt-cells = <2>; - - gpio0: bank@0 { - reg = <0>; - compatible = "mediatek,mt7621-gpio-bank"; - gpio-controller; - #gpio-cells = <2>; - }; - - gpio1: bank@1 { - reg = <1>; - compatible = "mediatek,mt7621-gpio-bank"; - gpio-controller; - #gpio-cells = <2>; - }; - - gpio2: bank@2 { - reg = <2>; - compatible = "mediatek,mt7621-gpio-bank"; - gpio-controller; - #gpio-cells = <2>; - }; - }; |