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usb: musb: Always clear the data toggle bit when configuring ep

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Without this patch clearing was done only when U-Boot was compiled with
MUSB Host Controller. But clearing of data toggle bit is needed also for
MUSB Device Controller otherwise Device Controller does not work correctly.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
This commit is contained in:
Pali Rohár 2021-02-07 14:50:04 +01:00 committed by Marek Vasut
parent 4cc53ef184
commit a6f5e1b9cd
1 changed files with 0 additions and 4 deletions
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4
drivers/usb/musb/musb_core.c
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@ -81,10 +81,8 @@ void musb_configure_ep(const struct musb_epinfo *epinfo, u8 cnt)
config_fifo(tx, idx, fifoaddr);
csr = readw(&musbr->txcsr);
#if defined(CONFIG_USB_MUSB_HCD)
/* clear the data toggle bit */
writew(csr | MUSB_TXCSR_CLRDATATOG, &musbr->txcsr);
#endif
/* Flush fifo if required */
if (csr & MUSB_TXCSR_TXPKTRDY)
writew(csr | MUSB_TXCSR_FLUSHFIFO,
@ -94,10 +92,8 @@ void musb_configure_ep(const struct musb_epinfo *epinfo, u8 cnt)
config_fifo(rx, idx, fifoaddr);
csr = readw(&musbr->rxcsr);
#if defined(CONFIG_USB_MUSB_HCD)
/* clear the data toggle bit */
writew(csr | MUSB_RXCSR_CLRDATATOG, &musbr->rxcsr);
#endif
/* Flush fifo if required */
if (csr & MUSB_RXCSR_RXPKTRDY)
writew(csr | MUSB_RXCSR_FLUSHFIFO,