mfd: omap-usb-tll: Add device tree support and binding information

Allows the OMAP USB TLL module to be specified via device tree.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

diff --git a/Documentation/devicetree/bindings/mfd/omap-usb-tll.txt b/Documentation/devicetree/bindings/mfd/omap-usb-tll.txt
new file mode 100644 (file)
index 0000000..62fe697
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/omap-usb-tll.txt
@@ -0,0 +1,17 @@
+OMAP HS USB Host TLL (Transceiver-Less Interface)
+
+Required properties:
+
+- compatible : should be "ti,usbhs-tll"
+- reg : should contain one register range i.e. start and length
+- interrupts : should contain the TLL module's interrupt
+- ti,hwmod : must contain "usb_tll_hs"
+
+Example:
+
+       usbhstll: usbhstll@4a062000 {
+               compatible = "ti,usbhs-tll";
+               reg = <0x4a062000 0x1000>;
+               interrupts = <78>;
+               ti,hwmods = "usb_tll_hs";
+         };

diff --git a/drivers/mfd/omap-usb-tll.c b/drivers/mfd/omap-usb-tll.c
index f7d2568..8f4d5a1 100644 (file)
--- a/drivers/mfd/omap-usb-tll.c
+++ b/drivers/mfd/omap-usb-tll.c
@@ -28,6 +28,7 @@
 #include <linux/err.h>
 #include <linux/pm_runtime.h>
 #include <linux/platform_data/usb-omap.h>
+#include <linux/of.h>
 
 #define USBTLL_DRIVER_NAME     "usbhs_tll"
 
@@ -311,10 +312,18 @@ static int usbtll_omap_remove(struct platform_device *pdev)
        return 0;
 }
 
+static const struct of_device_id usbtll_omap_dt_ids[] = {
+       { .compatible = "ti,usbhs-tll" },
+       { }
+};
+
+MODULE_DEVICE_TABLE(of, usbtll_omap_dt_ids);
+
 static struct platform_driver usbtll_omap_driver = {
        .driver = {
                .name           = (char *)usbtll_driver_name,
                .owner          = THIS_MODULE,
+               .of_match_table = of_match_ptr(usbtll_omap_dt_ids),
        },
        .probe          = usbtll_omap_probe,
        .remove         = usbtll_omap_remove,
@@ -467,6 +476,7 @@ int omap_tll_disable(struct usbhs_omap_platform_data *pdata)
 EXPORT_SYMBOL_GPL(omap_tll_disable);
 
 MODULE_AUTHOR("Keshava Munegowda <keshava_mgowda@ti.com>");
+MODULE_AUTHOR("Roger Quadros <rogerq@ti.com>");
 MODULE_ALIAS("platform:" USBHS_DRIVER_NAME);
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("usb tll driver for TI OMAP EHCI and OHCI controllers");