2011/8/8 Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>:
> Signed-off-by: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Without this patch, DT can still connect driver with device by the
heuristic way(of_modalias_node).
i have a patch just like yours in input subsystem "[PATCH v2] input:
touchscreen: add OF match table for ads7846" with "Acked-by: Grant
Likely", but Dmitry seems to just ignore it.
so not sure whether this kind of new added match tables are totally
liked by people or not.
> ---
> Documentation/devicetree/bindings/sound/wm8753.txt | 18 ++++++++++++++++++
> sound/soc/codecs/wm8753.c | 9 +++++++++
> 2 files changed, 27 insertions(+), 0 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/sound/wm8753.txt
>
> diff --git a/Documentation/devicetree/bindings/sound/wm8753.txt b/Documentation/devicetree/bindings/sound/wm8753.txt
> new file mode 100644
> index 0000000..e65277a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/wm8753.txt
> @@ -0,0 +1,18 @@
> +WM8753 audio CODEC
> +
> +This device supports both I2C and SPI (configured with pin strapping
> +on the board).
> +
> +Required properties:
> +
> + - compatible : "wlf,wm8753"
> +
> + - reg : the I2C address of the device for I2C, the chip select
> + number for SPI.
> +
> +Example:
> +
> +codec: wm8737@1a {
> + compatible = "wlf,wm8753";
> + reg = <0x1a>;
> +};
> diff --git a/sound/soc/codecs/wm8753.c b/sound/soc/codecs/wm8753.c
> index a702550..fe04a10 100644
> --- a/sound/soc/codecs/wm8753.c
> +++ b/sound/soc/codecs/wm8753.c
> @@ -38,6 +38,7 @@
> #include <linux/delay.h>
> #include <linux/pm.h>
> #include <linux/i2c.h>
> +#include <linux/of_device.h>
> #include <linux/platform_device.h>
> #include <linux/spi/spi.h>
> #include <linux/slab.h>
> @@ -1490,6 +1491,12 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8753 = {
> .reg_cache_default = wm8753_reg,
> };
>
> +static const struct of_device_id wm8753_of_match[] = {
> + { .compatible = "wlf,wm8753", },
> + { }
> +};
> +MODULE_DEVICE_TABLE(of, wm8753_of_match);
> +
> #if defined(CONFIG_SPI_MASTER)
> static int __devinit wm8753_spi_probe(struct spi_device *spi)
> {
> @@ -1521,6 +1528,7 @@ static struct spi_driver wm8753_spi_driver = {
> .driver = {
> .name = "wm8753",
> .owner = THIS_MODULE,
> + .of_match_table = wm8753_of_match,
> },
> .probe = wm8753_spi_probe,
> .remove = __devexit_p(wm8753_spi_remove),
> @@ -1565,6 +1573,7 @@ static struct i2c_driver wm8753_i2c_driver = {
> .driver = {
> .name = "wm8753",
> .owner = THIS_MODULE,
> + .of_match_table = wm8753_of_match,
> },
> .probe = wm8753_i2c_probe,
> .remove = __devexit_p(wm8753_i2c_remove),
> --
> 1.7.5.4
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