diff options
| author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2012-05-28 23:31:39 -0700 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2012-06-04 18:11:42 +0300 |
| commit | d3c568c302ed0e3b2d51f0335f304ca4d85de54b (patch) | |
| tree | 5d02b8356a120f28978811a404d384556a6ff12d /include/linux | |
| parent | fa84c57516f6da93ebc2601348043e9bcb7b4b4d (diff) | |
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>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/usb/renesas_usbhs.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/usb/renesas_usbhs.h b/include/linux/usb/renesas_usbhs.h index 547e59cc00ea..c5d36c65c33b 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; |