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-rw-r--r--include/linux/usb/renesas_usbhs.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/usb/renesas_usbhs.h b/include/linux/usb/renesas_usbhs.h
index 547e59cc00e..c5d36c65c33 100644
--- a/include/linux/usb/renesas_usbhs.h
+++ b/include/linux/usb/renesas_usbhs.h
@@ -132,6 +132,14 @@ struct renesas_usbhs_driver_param {
* option:
*
* dma id for dmaengine
+ * The data transfer direction on D0FIFO/D1FIFO should be
+ * fixed for keeping consistency.
+ * So, the platform id settings will be..
+ * .d0_tx_id = xx_TX,
+ * .d1_rx_id = xx_RX,
+ * or
+ * .d1_tx_id = xx_TX,
+ * .d0_rx_id = xx_RX,
*/
int d0_tx_id;
int d0_rx_id;