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usb: dwc_otg_310: increase otg max_transfer_size to 128KB

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The default value of the max_transfer_size is only 65535,
but according to the field of PktSizeWidth in GHWCFG3, the
otg controller on rockchip platforms can support max 512KB
transfer size. So we increase the otg max_transfer_size to
128KB, it can help to avoid dividing into two hardware
transmissions if the usb device class driver(e.g. f_mtp.c)
request to transfer more than 65535 Bytes data in a single
usb request.

Change-Id: Ic281965815e48e4a146a13f9d37f88a10ee0d33e
Signed-off-by: William Wu <william.wu@rock-chips.com>
This commit is contained in:
William Wu
2018-01-25 11:23:44 +08:00
committed by Tao Huang
parent c94093c84f
commit b742b07e84
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/dwc_otg_310/dwc_otg_driver.c
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@@ -169,7 +169,7 @@ static struct dwc_otg_driver_module_params dwc_otg_module_params = {
.host_rx_fifo_size = -1,
.host_nperio_tx_fifo_size = -1,
.host_perio_tx_fifo_size = -1,
.max_transfer_size = -1,
.max_transfer_size = 131072,
.max_packet_count = -1,
.host_channels = -1,
.dev_endpoints = -1,