[alsa-devel] [PATCH v2 2/2] ASoC: omap-dmic: Add device tree bindings

[Peter Ujfalusi]

Device tree support for OMAP4+ dmic cpu dai driver.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi at ti.com>
---
 .../devicetree/bindings/sound/omap-dmic.txt        |   21 ++++++++++++++++++++
 sound/soc/omap/omap-dmic.c                         |    8 +++++++
 2 files changed, 29 insertions(+), 0 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/sound/omap-dmic.txt

diff --git a/Documentation/devicetree/bindings/sound/omap-dmic.txt b/Documentation/devicetree/bindings/sound/omap-dmic.txt
new file mode 100644
index 0000000..fd8105f
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/omap-dmic.txt
@@ -0,0 +1,21 @@
+* Texas Instruments OMAP4+ Digital Microphone Module
+
+Required properties:
+- compatible: "ti,omap4-dmic"
+- reg: Register location and size as an array:
+       <MPU access base address, size>,
+       <L3 interconnect address, size>;
+- interrupts: Interrupt number for DMIC
+- interrupt-parent: The parent interrupt controller
+- ti,hwmods: Name of the hwmod associated with OMAP dmic IP
+
+Example:
+
+dmic: dmic at 4012e000 {
+	compatible = "ti,omap4-dmic";
+	reg = <0x4012e000 0x7f>, /* MPU private access */
+	      <0x4902e000 0x7f>; /* L3 Interconnect */
+	interrupts = <0 114 0x4>;
+	interrupt-parent = <&gic>;
+	ti,hwmods = "dmic";
+};
diff --git a/sound/soc/omap/omap-dmic.c b/sound/soc/omap/omap-dmic.c
index 4dcb5a7..75f5dca 100644
--- a/sound/soc/omap/omap-dmic.c
+++ b/sound/soc/omap/omap-dmic.c
@@ -32,6 +32,7 @@
 #include <linux/io.h>
 #include <linux/slab.h>
 #include <linux/pm_runtime.h>
+#include <linux/of_device.h>
 #include <plat/dma.h>
 
 #include <sound/core.h>
@@ -528,10 +529,17 @@ static int __devexit asoc_dmic_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static const struct of_device_id omap_dmic_of_match[] = {
+	{ .compatible = "ti,omap4-dmic", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, omap_dmic_of_match);
+
 static struct platform_driver asoc_dmic_driver = {
 	.driver = {
 		.name = "omap-dmic",
 		.owner = THIS_MODULE,
+		.of_match_table = omap_dmic_of_match,
 	},
 	.probe = asoc_dmic_probe,
 	.remove = __devexit_p(asoc_dmic_remove),
-- 
1.7.8.6