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spi: Add DT bindings documentation for Netlogic XLP SPI controller 

Add DT bindings documentation for SPI controller driver used by
Netlogic XLP MIPS64 SoCs.

Signed-off-by: Kamlakant Patel <kamlakant.patel@broadcom.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kamlakant Patel 2015-08-27 17:49:29 +05:30 committed by Mark Brown
parent d8c80d49cf
commit bf96283734
1 changed files with 39 additions and 0 deletions
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39
Documentation/devicetree/bindings/spi/spi-xlp.txt Normal file
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SPI Master controller for Netlogic XLP MIPS64 SOCs
==================================================
Currently this SPI controller driver is supported for the following
Netlogic XLP SoCs:
XLP832, XLP316, XLP208, XLP980, XLP532
Required properties:
- compatible : Should be "netlogic,xlp832-spi".
- #address-cells : Number of cells required to define a chip select address
on the SPI bus.
- #size-cells : Should be zero.
- reg : Should contain register location and length.
- clocks : Phandle of the spi clock
- interrupts : Interrupt number used by this controller.
- interrupt-parent : Phandle of the parent interrupt controller.
SPI slave nodes must be children of the SPI master node and can contain
properties described in Documentation/devicetree/bindings/spi/spi-bus.txt.
Example:
spi: xlp_spi@3a100 {
compatible = "netlogic,xlp832-spi";
#address-cells = <1>;
#size-cells = <0>;
reg = <0 0x3a100 0x100>;
clocks = <&spi_clk>;
interrupts = <34>;
interrupt-parent = <&pic>;
spi_nor@1 {
compatible = "spansion,s25sl12801";
#address-cells = <1>;
#size-cells = <1>;
reg = <1>; /* Chip Select */
spi-max-frequency = <40000000>;
};
};