[PATCH] usb: dwc2: Set max xfer length to speed up R/W

[Cheng Lu]

Set transfer length to the maximum (65535 * 512) Bytes
of SCSI READ(10) and WRITE(10) commands, while default
transfer length is (20 * 512) Bytes

Signed-off-by: Cheng Lu <Cheng.Lu at synaptics.com>
Cc: <marex at denx.de>
---

 drivers/usb/host/dwc2.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/usb/host/dwc2.c b/drivers/usb/host/dwc2.c
index f1d13b1c1d..936d7ceb5f 100644
--- a/drivers/usb/host/dwc2.c
+++ b/drivers/usb/host/dwc2.c
@@ -1456,10 +1456,17 @@ static int dwc2_usb_remove(struct udevice *dev)
 	return 0;
 }
 
+static int dwc2_get_max_xfer_size(struct udevice *dev, size_t *size)
+{
+	*size = SIZE_MAX;
+	return 0;
+}
+
 struct dm_usb_ops dwc2_usb_ops = {
 	.control = dwc2_submit_control_msg,
 	.bulk = dwc2_submit_bulk_msg,
 	.interrupt = dwc2_submit_int_msg,
+	.get_max_xfer_size  = dwc2_get_max_xfer_size,
 };
 
 static const struct udevice_id dwc2_usb_ids[] = {
-- 
2.25.1