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Commit 94409d6e authored by Anton Vorontsov's avatar Anton Vorontsov Committed by Kumar Gala
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powerpc: Add device tree bindings for BCSR GPIO banks 



The patch adds bindings for BCSR GPIO banks, the bindings are used to
describe particular BCSR registers that act as simple GPIO controllers.
These GPIO banks might control power switches, SPI chip-selects, LEDs,
etc.

While at it, also fix "length" spelling error in the PIXIS FPGA
bindings.

Signed-off-by: default avatarAnton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
parent 1b9e8904

Documentation/powerpc/dts-bindings/fsl/board.txt

+31 −1
Original line number Original line Diff line number Diff line
@@ -18,7 +18,7 @@ This is the memory-mapped registers for on board FPGA. 




Required properities:

Required properities:

- compatible : should be "fsl,fpga-pixis".

- compatible : should be "fsl,fpga-pixis".

- reg : should contain the address and the lenght of the FPPGA register

- reg : should contain the address and the length of the FPPGA register

  set.

  set.





Example (MPC8610HPCD):

Example (MPC8610HPCD):
@@ -27,3 +27,33 @@ Example (MPC8610HPCD): 
		compatible = "fsl,fpga-pixis";

		compatible = "fsl,fpga-pixis";

		reg = <0xe8000000 32>;

		reg = <0xe8000000 32>;

	};

	};



* Freescale BCSR GPIO banks



Some BCSR registers act as simple GPIO controllers, each such

register can be represented by the gpio-controller node.



Required properities:

- compatible : Should be "fsl,<board>-bcsr-gpio".

- reg : Should contain the address and the length of the GPIO bank

  register.

- #gpio-cells : Should be two. The first cell is the pin number and the

  second cell is used to specify optional paramters (currently unused).

- gpio-controller : Marks the port as GPIO controller.



Example:



	bcsr@1,0 {

		#address-cells = <1>;

		#size-cells = <1>;

		compatible = "fsl,mpc8360mds-bcsr";

		reg = <1 0 0x8000>;

		ranges = <0 1 0 0x8000>;



		bcsr13: gpio-controller@d {

			#gpio-cells = <2>;

			compatible = "fsl,mpc8360mds-bcsr-gpio";

			reg = <0xd 1>;

			gpio-controller;

		};

	};