[PATCH 2/2] Documentation: DT bindings for AXM55xx SSP CS
From: Anders Berg <hidden>
Date: 2014-09-01 12:54:15
Also in:
linux-devicetree, linux-gpio, lkml
Subsystem:
gpio subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Linus Walleij, Bartosz Golaszewski, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Bindings and documentation for AXM55xx SSP chip select controller. Signed-off-by: Anders Berg <redacted> --- .../devicetree/bindings/gpio/gpio-axxia-sspcs.txt | 36 ++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-axxia-sspcs.txt
diff --git a/Documentation/devicetree/bindings/gpio/gpio-axxia-sspcs.txt b/Documentation/devicetree/bindings/gpio/gpio-axxia-sspcs.txt
new file mode 100644
index 0000000..a64c695
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-axxia-sspcs.txt@@ -0,0 +1,36 @@ +* Axxia SSP GPIO chip-select driver + +The Axxia device has a ARM PL022 Prime Cell SSP controller with an extension of +five chip select signals that may be controlled by software. This driver +exports them as GPIOs. + +Required properties: + + * compatible: should be "lsi,ssp-gpio" + * reg: address of the chip select control register. + * gpio-controller: mark the device as gpio controller + * #gpio-cells: should be 1 and this field specifies the chip select number + +Example: +------- + + spics: sspgpio at 2010088030 { + compatible = "lsi,ssp-gpio"; + #gpio-cells = <1>; + reg = <0x20 0x10088030 0x00 0x4>; + gpio-controller; + }; + + spi0: ssp at 2010088000 { + compatible = "arm,pl022", "arm,primecell"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0x20 0x10088000 0x00 0x1000>; + num-cs = <5>; + cs-gpios = <&spics 0>, + <&spics 1>, + <&spics 2>, + <&spics 3>, + <&spics 4>; + ... + };
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1.9.1