From: Rob Herring <rob.herring@xxxxxxxxxxx>
Add of_match_table and DT style i2c registration to designware i2c
driver.
Signed-off-by: Rob Herring <rob.herring@xxxxxxxxxxx>
Acked-by: Grant Likely <grant.likely@xxxxxxxxxxxx>
Cc: devicetree-discuss@xxxxxxxxxxxxxxxx
Cc: Ben Dooks <ben-linux@xxxxxxxxx>
Cc: linux-i2c@xxxxxxxxxxxxxxx
---
Documentation/devicetree/bindings/i2c/dw-i2c.txt | 23 ++++++++++++++++++++++
drivers/i2c/busses/i2c-designware.c | 8 +++++++
2 files changed, 31 insertions(+), 0 deletions(-)
create mode 100644 Documentation/devicetree/bindings/i2c/dw-i2c.txt
diff --git a/Documentation/devicetree/bindings/i2c/dw-i2c.txt b/Documentation/devicetree/bindings/i2c/dw-i2c.txt
new file mode 100644
index 0000000..cbcb404
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/dw-i2c.txt
@@ -0,0 +1,23 @@
+* Synopsys DesignWare I2C
+
+Required properties :
+
+ - compatible : should be "snps,designware-i2c"
+ - reg : Offset and length of the register set for the device
+ - interrupts : <IRQ> where IRQ is the interrupt number.
+
+Recommended properties :
+
+ - clock-frequency : desired I2C bus clock frequency in Hz.
+
+Example :
+
+ i2c@f0000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "snps,designware-i2c";
+ reg = <0xf0000 0x1000>;
+ interrupts = <11>;
+ clock-frequency = <400000>;
+ };
+
diff --git a/drivers/i2c/busses/i2c-designware.c b/drivers/i2c/busses/i2c-designware.c
index b7a51c4..0223b98 100644
--- a/drivers/i2c/busses/i2c-designware.c
+++ b/drivers/i2c/busses/i2c-designware.c
@@ -769,6 +769,7 @@ static int __devinit dw_i2c_probe(struct platform_device *pdev)
sizeof(adap->name));
adap->algo = &i2c_dw_algo;
adap->dev.parent = &pdev->dev;
+ adap->dev.of_node = pdev->dev.of_node;
adap->nr = pdev->id;
r = i2c_add_numbered_adapter(adap);
@@ -819,6 +820,12 @@ static int __devexit dw_i2c_remove(struct platform_device *pdev)
return 0;
}
+static const struct of_device_id dw_i2c_of_match[] = {
+ { .compatible = "snps,designware-i2c", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, dw_i2c_of_match);
+
/* work with hotplug and coldplug */
MODULE_ALIAS("platform:i2c_designware");
@@ -827,6 +834,7 @@ static struct platform_driver dw_i2c_driver = {
.driver = {
.name = "i2c_designware",
.owner = THIS_MODULE,
+ .of_match_table = dw_i2c_of_match,
},
};
--
1.7.4.1
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