openwrt/target/linux/brcm2708/patches-4.4/0207-dwc_otg-Enable-the-hack-for-Split-Interrupt-transact.patch
Álvaro Fernández Rojas 3fc661a98c brcm2708: update linux 4.4 patches to latest version
As usual these patches were extracted from the raspberry pi repo:
https://github.com/raspberrypi/linux/tree/rpi-4.4.y
Also alphabetically order sound-soc kernel packages.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2016-06-08 21:23:21 +02:00

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From e1e24dfafa725d849724cb9bf24c142a5cc8473a Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Mon, 21 Mar 2016 15:38:38 +0000
Subject: [PATCH 207/381] dwc_otg: Enable the hack for Split Interrupt
transactions by default
dwc_otg.fiq_fsm_mask=0xF has long been a suggestion for users with audio stutters or other USB bandwidth issues.
So far we are aware of many success stories but no failure caused by this setting.
Make it a default to learn more.
See: https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=70437
Signed-off-by: popcornmix <popcornmix@gmail.com>
---
drivers/usb/host/dwc_otg/dwc_otg_driver.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/host/dwc_otg/dwc_otg_driver.c
+++ b/drivers/usb/host/dwc_otg/dwc_otg_driver.c
@@ -247,7 +247,7 @@ bool fiq_fsm_enable = true;
//Bulk split-transaction NAK holdoff in microframes
uint16_t nak_holdoff = 8;
-unsigned short fiq_fsm_mask = 0x07;
+unsigned short fiq_fsm_mask = 0x0F;
/**
* This function shows the Driver Version.