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author | Sascha Hauer <s.hauer@pengutronix.de> | 2016-10-18 10:10:24 +0200 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2016-10-18 10:10:24 +0200 |
commit | bfbf18d991756858337f7700e8ff0a6f0dc31afc (patch) | |
tree | cf3568de4fdff1891e277507f08f49a871682706 /dts/Bindings/gpio/gpio-ts4900.txt | |
parent | 834f6bf5e5f1169065376ad1aeb6a6266e66ce5c (diff) | |
download | barebox-bfbf18d991756858337f7700e8ff0a6f0dc31afc.tar.gz barebox-bfbf18d991756858337f7700e8ff0a6f0dc31afc.tar.xz |
dts: update to v4.9-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/gpio/gpio-ts4900.txt')
-rw-r--r-- | dts/Bindings/gpio/gpio-ts4900.txt | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/dts/Bindings/gpio/gpio-ts4900.txt b/dts/Bindings/gpio/gpio-ts4900.txt new file mode 100644 index 0000000000..3f8e71b1ab --- /dev/null +++ b/dts/Bindings/gpio/gpio-ts4900.txt @@ -0,0 +1,30 @@ +* Technologic Systems I2C-FPGA's GPIO controller bindings + +This bindings describes the GPIO controller for Technologic's FPGA core. +TS-4900's FPGA encodes the GPIO state on 3 bits, whereas the TS-7970's FPGA +uses 2 bits: it doesn't use a dedicated input bit. + +Required properties: +- compatible: Should be one of the following + "technologic,ts4900-gpio" + "technologic,ts7970-gpio" +- reg: Physical base address of the controller and length + of memory mapped region. +- #gpio-cells: Should be two. The first cell is the pin number. +- gpio-controller: Marks the device node as a gpio controller. + +Optional property: +- ngpios: Number of GPIOs this controller is instantiated with, + the default is 32. See gpio.txt for more details. + +Example: + +&i2c2 { + gpio8: gpio@28 { + compatible = "technologic,ts4900-gpio"; + reg = <0x28>; + #gpio-cells = <2>; + gpio-controller; + ngpios = <32>; + }; +}; |