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| author | Andrew Lunn <andrew@lunn.ch> | 2012-07-23 12:08:09 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-07-23 11:43:39 +0100 |
| commit | f814f9ac5a819542fdf6db97305db9da603c1eeb (patch) | |
| tree | 02a558a9497634f1b001157cf46bc2e831d7521f | |
| parent | 24ab32751183d4063d195c943af3cd6f1cad6794 (diff) | |
| download | op-kernel-dev-f814f9ac5a819542fdf6db97305db9da603c1eeb.zip op-kernel-dev-f814f9ac5a819542fdf6db97305db9da603c1eeb.tar.gz | |
spi/orion: add device tree binding
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@googlemail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| -rw-r--r-- | Documentation/devicetree/bindings/spi/spi-orion.txt | 19 | ||||
| -rw-r--r-- | drivers/spi/spi-orion.c | 17 |
2 files changed, 36 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/spi/spi-orion.txt b/Documentation/devicetree/bindings/spi/spi-orion.txt new file mode 100644 index 0000000..a3ff50f --- /dev/null +++ b/Documentation/devicetree/bindings/spi/spi-orion.txt @@ -0,0 +1,19 @@ +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"; + }; diff --git a/drivers/spi/spi-orion.c b/drivers/spi/spi-orion.c index dfd04e9..74312a8 100644 --- a/drivers/spi/spi-orion.c +++ b/drivers/spi/spi-orion.c @@ -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), }; |
