1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c
index bb54cca4c543..34e9e393f929 100644
--- a/drivers/usb/gadget/omap_udc.c
+++ b/drivers/usb/gadget/omap_udc.c
@@ -2313,6 +2313,13 @@ static int proc_otg_show(struct seq_file *s)
 
         tmp = omap_readl(OTG_REV);
         if (cpu_is_omap24xx()) {
+                /*
+                 * REVISIT: Not clear how this works on OMAP2.  trans
+                 * is ANDed to produce bits 7 and 8, which might make
+                 * sense for USB_TRANSCEIVER_CTRL on OMAP1,
+                 * but with CONTROL_DEVCONF, these bits have something to
+                 * do with the frame adjustment counter and McBSP2.
+                 */
                 ctrl_name = "control_devconf";
                 trans = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
         } else {