board: Add gazerbeam driver

[oweals/u-boot.git] / Documentation / devicetree / bindings / board / gdsys,board_gazerbeam.txt

diff --git a/Documentation/devicetree/bindings/board/gdsys,board_gazerbeam.txt b/Documentation/devicetree/bindings/board/gdsys,board_gazerbeam.txt
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+gdsys Gazerbeam board driver
+
+This driver provides capabilities to access the gdsys Gazerbeam board's device
+information. Furthermore, phandles to some internal devices are provided for
+the board files.
+
+Required properties:
+- compatible:  should be "gdsys,board_gazerbeam"
+- csb:         phandle to the board's coherent system bus (CSB) device node
+- rxaui[0-3]:  phandles to the rxaui control device nodes
+- fpga[0-1]:   phandles to the board's gdsys FPGA device nodes
+- ioep[0-1]:   phandles to the board's IO endpoint device nodes
+- ver-gpios:   GPIO list to read the hardware version from
+- var-gpios:   GPIO list to read the hardware variant information from
+- reset-gpios: GPIO list for the board's reset GPIOs
+
+Example:
+
+
+board {
+       compatible = "gdsys,board_gazerbeam";
+       csb = <&board_soc>;
+       serdes = <&SERDES>;
+       rxaui0 = <&RXAUI0>;
+       rxaui1 = <&RXAUI1>;
+       rxaui2 = <&RXAUI2>;
+       rxaui3 = <&RXAUI3>;
+       fpga0 = <&FPGA0>;
+       fpga1 = <&FPGA1>;
+       ioep0 = <&IOEP0>;
+       ioep1 = <&IOEP1>;
+
+       ver-gpios = <&PPCPCA 12 0
+                    &PPCPCA 13 0
+                    &PPCPCA 14 0
+                    &PPCPCA 15 0>;
+
+       /* MC2/SC-Board */
+       var-gpios-mc2 = <&GPIO_VB0 0 0    /* VAR-MC_SC */
+                        &GPIO_VB0 11 0>; /* VAR-CON */
+       /* MC4-Board */
+       var-gpios-mc4 = <&GPIO_VB1 0 0    /* VAR-MC_SC */
+                        &GPIO_VB1 11 0>; /* VAR-CON */
+
+       reset-gpios = <&gpio0 1 0 &gpio0 2 1>;
+};