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Commit f814f9ac authored by Andrew Lunn's avatar Andrew Lunn Committed by Mark Brown
Browse files

spi/orion: add device tree binding 



Signed-off-by: default avatarMichael Walle <michael@walle.cc>
Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Acked-by: default avatarJason Cooper <jason@lakedaemon.net>
Acked-by: default avatarSebastian Hesselbarth <sebastian.hesselbarth@googlemail.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 24ab3275

Documentation/devicetree/bindings/spi/spi-orion.txt

0 → 100644
+19 −0
Original line number Diff line number Diff line 
Marvell Orion SPI device



Required properties:

- compatible : should be "marvell,orion-spi".

- reg : offset and length of the register set for the device

- cell-index : Which of multiple SPI controllers is this.

Optional properties:

- interrupts : Is currently not used.



Example:

       spi@10600 {

	       compatible = "marvell,orion-spi";

	       #address-cells = <1>;

	       #size-cells = <0>;

	       cell-index = <0>;

	       reg = <0x10600 0x28>;

	       interrupts = <23>;

	       status = "disabled";

       };

drivers/spi/spi-orion.c

+17 −0
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
#include <linux/io.h>

#include <linux/spi/spi.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/clk.h>

#include <asm/unaligned.h>
@@ -453,6 +454,8 @@ static int __init orion_spi_probe(struct platform_device *pdev) 
	struct orion_spi_info *spi_info;

	unsigned long tclk_hz;

	int status = 0;

	const u32 *iprop;

	int size;



	spi_info = pdev->dev.platform_data;
@@ -464,6 +467,12 @@ static int __init orion_spi_probe(struct platform_device *pdev) 


	if (pdev->id != -1)

		master->bus_num = pdev->id;

	if (pdev->dev.of_node) {

		iprop = of_get_property(pdev->dev.of_node, "cell-index",

					&size);

		if (iprop && size == sizeof(*iprop))

			master->bus_num = *iprop;

	}



	/* we support only mode 0, and no options */

	master->mode_bits = 0;
@@ -511,6 +520,7 @@ static int __init orion_spi_probe(struct platform_device *pdev) 
	if (orion_spi_reset(spi) < 0)

		goto out_rel_mem;



	master->dev.of_node = pdev->dev.of_node;

	status = spi_register_master(master);

	if (status < 0)

		goto out_rel_mem;
@@ -552,10 +562,17 @@ static int __exit orion_spi_remove(struct platform_device *pdev) 


MODULE_ALIAS("platform:" DRIVER_NAME);



static const struct of_device_id orion_spi_of_match_table[] __devinitdata = {

	{ .compatible = "marvell,orion-spi", },

	{}

};

MODULE_DEVICE_TABLE(of, orion_spi_of_match_table);



static struct platform_driver orion_spi_driver = {

	.driver = {

		.name	= DRIVER_NAME,

		.owner	= THIS_MODULE,

		.of_match_table = of_match_ptr(orion_spi_of_match_table),

	},

	.remove		= __exit_p(orion_spi_remove),

};