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authorTomasz Figa <t.figa@samsung.com>2013-06-25 15:38:23 (GMT)
committerFelipe Balbi <balbi@ti.com>2013-07-29 10:56:49 (GMT)
commitc50f056c360673ef196b49bfa161d841f0fbe92e (patch)
tree9d1f89634838ea37fa1e1e44fb90b094d0dbab8c
parent22a5aa170c5231e64e1598a55dee92ea9a26183e (diff)
usb: gadget: s3c-hsotg: Allow driver instantiation using device tree
This patch adds OF match table to the driver to allow instantiating it using device tree. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
-rw-r--r--Documentation/devicetree/bindings/usb/samsung-hsotg.txt40
-rw-r--r--drivers/usb/gadget/s3c-hsotg.c10
2 files changed, 50 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/samsung-hsotg.txt b/Documentation/devicetree/bindings/usb/samsung-hsotg.txt
new file mode 100644
index 0000000..b83d428
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/samsung-hsotg.txt
@@ -0,0 +1,40 @@
+Samsung High Speed USB OTG controller
+-----------------------------
+
+The Samsung HSOTG IP can be found on Samsung SoCs, from S3C6400 onwards.
+It gives functionality of OTG-compliant USB 2.0 host and device with
+support for USB 2.0 high-speed (480Mbps) and full-speed (12 Mbps)
+operation.
+
+Currently only device mode is supported.
+
+Binding details
+-----
+
+Required properties:
+- compatible: "samsung,s3c6400-hsotg" should be used for all currently
+ supported SoC,
+- interrupt-parent: phandle for the interrupt controller to which the
+ interrupt signal of the HSOTG block is routed,
+- interrupts: specifier of interrupt signal of interrupt controller,
+ according to bindings of interrupt controller,
+- clocks: contains an array of clock specifiers:
+ - first entry: OTG clock
+- clock-names: contains array of clock names:
+ - first entry: must be "otg"
+- vusb_d-supply: phandle to voltage regulator of digital section,
+- vusb_a-supply: phandle to voltage regulator of analog section.
+
+Example
+-----
+
+ hsotg@12480000 {
+ compatible = "samsung,s3c6400-hsotg";
+ reg = <0x12480000 0x20000>;
+ interrupts = <0 71 0>;
+ clocks = <&clock 305>;
+ clock-names = "otg";
+ vusb_d-supply = <&vusb_reg>;
+ vusb_a-supply = <&vusbdac_reg>;
+ };
+
diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c
index af22f24..616ed51 100644
--- a/drivers/usb/gadget/s3c-hsotg.c
+++ b/drivers/usb/gadget/s3c-hsotg.c
@@ -29,6 +29,7 @@
#include <linux/slab.h>
#include <linux/clk.h>
#include <linux/regulator/consumer.h>
+#include <linux/of_platform.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
@@ -3648,10 +3649,19 @@ static int s3c_hsotg_remove(struct platform_device *pdev)
#define s3c_hsotg_resume NULL
#endif
+#ifdef CONFIG_OF
+static const struct of_device_id s3c_hsotg_of_ids[] = {
+ { .compatible = "samsung,s3c6400-hsotg", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, s3c_hsotg_of_ids);
+#endif
+
static struct platform_driver s3c_hsotg_driver = {
.driver = {
.name = "s3c-hsotg",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(s3c_hsotg_of_ids),
},
.probe = s3c_hsotg_probe,
.remove = s3c_hsotg_remove,

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