Commit d3c568c3 authored May 28, 2012 by Kuninori Morimoto Committed by Felipe Balbi Jun 04, 2012

usb: renesas_usbhs: add DMAEngine ID specification note



renesas_usbhs DMAEngine uses D0FIFO/D1FIFO,
but the data transfer direction should be fixed for keeping consistency.
This patch explain about it on renesas_usbhs.h

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

parent fa84c575

include/linux/usb/renesas_usbhs.h

+8 −0

Original line number	Diff line number	Diff line
		@@ -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;

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