X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=drivers%2Fusb%2Fgadget%2Ffotg210.c;h=3acf6a1f41dfd35897d84262871c71f5203e1de3;hb=340ed422d2a58c4858ba8e110c233e8ae92c04e0;hp=d003331baee1e98a1901b873554ef6d1b6d5ebfc;hpb=fbbbc86e8ebac4f42f4ca39ceba80cea27c983bc;p=oweals%2Fu-boot.git

diff --git a/drivers/usb/gadget/fotg210.c b/drivers/usb/gadget/fotg210.c
index d003331bae..3acf6a1f41 100644
--- a/drivers/usb/gadget/fotg210.c
+++ b/drivers/usb/gadget/fotg210.c
@@ -4,8 +4,7 @@
  * (C) Copyright 2010 Faraday Technology
  * Dante Su <dantesu@faraday-tech.com>
  *
- * This file is released under the terms of GPL v2 and any later version.
- * See the file COPYING in the root directory of the source tree for details.
+ * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
@@ -246,6 +245,7 @@ static int fotg210_dma(struct fotg210_ep *ep, struct fotg210_request *req)
 		if (ep->id == 0) {
 			/* Wait until cx/ep0 fifo empty */
 			fotg210_cxwait(chip, CXFIFO_CXFIFOE);
+			udelay(1);
 			writel(DMAFIFO_CX, &regs->dma_fifo);
 		} else {
 			/* Wait until epx fifo empty */
@@ -848,6 +848,13 @@ int usb_gadget_handle_interrupts(void)
 	/* CX interrupts */
 	if (gisr & GISR_GRP0) {
 		st = readl(&regs->gisr0);
+		/*
+		 * Write 1 and then 0 works for both W1C & RW.
+		 *
+		 * HW v1.11.0+: It's a W1C register (write 1 clear)
+		 * HW v1.10.0-: It's a R/W register (write 0 clear)
+		 */
+		writel(st & GISR0_CXABORT, &regs->gisr0);
 		writel(0, &regs->gisr0);
 
 		if (st & GISR0_CXERR)
@@ -874,6 +881,13 @@ int usb_gadget_handle_interrupts(void)
 	/* Device Status Interrupts */
 	if (gisr & GISR_GRP2) {
 		st = readl(&regs->gisr2);
+		/*
+		 * Write 1 and then 0 works for both W1C & RW.
+		 *
+		 * HW v1.11.0+: It's a W1C register (write 1 clear)
+		 * HW v1.10.0-: It's a R/W register (write 0 clear)
+		 */
+		writel(st, &regs->gisr2);
 		writel(0, &regs->gisr2);
 
 		if (st & GISR2_RESET)