[PATCH v2 7/7] f_sdp: Change bInterval of interrupt endpoint to 3
Peng Fan
peng.fan at nxp.com
Tue Aug 18 12:16:49 CEST 2020
From: Sherry Sun <sherry.sun at nxp.com>
Since the USB HID limits the maximum bandwidth(3072) for interrupt
endpoint transfers, when the bInterval set to 1, we can only support 3
boards to run sdp at the same time. In order to support more boards,
change the bInterval of interrupt endpoint to 3, which will not affect
the transmission speed.
Reviewed-by: Ye Li <ye.li at nxp.com>
Signed-off-by: Sherry Sun <sherry.sun at nxp.com>
Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
drivers/usb/gadget/f_sdp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/gadget/f_sdp.c b/drivers/usb/gadget/f_sdp.c
index c5b35945c1..e48aa2f90d 100644
--- a/drivers/usb/gadget/f_sdp.c
+++ b/drivers/usb/gadget/f_sdp.c
@@ -186,7 +186,7 @@ static struct usb_endpoint_descriptor in_hs_desc = {
.bEndpointAddress = 1 | USB_DIR_IN,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.wMaxPacketSize = 512,
- .bInterval = 1,
+ .bInterval = 3,
};
static struct usb_endpoint_descriptor out_hs_desc = {
@@ -196,7 +196,7 @@ static struct usb_endpoint_descriptor out_hs_desc = {
.bEndpointAddress = 1 | USB_DIR_OUT,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.wMaxPacketSize = SDP_HID_PACKET_SIZE_EP1,
- .bInterval = 1,
+ .bInterval = 3,
};
static struct usb_descriptor_header *sdp_runtime_descs[] = {
--
2.16.4
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