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synopsys-dwmac: Bugfixes

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* Dedicated FIFO mode requires a non-zero multi-count for periodic INs
 * Add ISO frame polarity
 * Correct max packet size for high-speed ISOC operation

Change-Id: I2c0d40b5f8d0e1e4cf43369631f17c7f80c6fab2
This commit is contained in:
Solomon Peachy 2026-08-11 07:42:43 -04:00
parent 444c9ce4bd
commit fd8d6f10a1
1 changed files with 19 additions and 2 deletions
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21
firmware/drivers/usb-designware.c
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@ -708,6 +708,12 @@ static void usb_dw_epstart(int epnum, enum usb_dw_epdir epdir,
#endif
#ifdef USB_DW_SHARED_FIFO
eptsiz |= MCCNT((ep_periodic_msk >> epnum) & 1);
#else
/* Dedicated FIFO mode still requires a non-zero multi-count for
* periodic IN endpoints. MCCNT(0) transmits no packets. */
uint32_t eptype = (DWC_DIEPCTL(epnum) >> 18) & 0x3;
if (eptype == EPTYP_ISOCHRONOUS || eptype == EPTYP_INTERRUPT)
eptsiz |= MCCNT(packets); /* rarely, if ever, not 1 */
#endif
}
@ -722,7 +728,18 @@ static void usb_dw_epstart(int epnum, enum usb_dw_epdir epdir,
DWC_EPDMA(epnum, epdir) = USB_DW_PHYSADDR((uint32_t)buf);
#endif
DWC_EPTSIZ(epnum, epdir) = eptsiz;
DWC_EPCTL(epnum, epdir) |= EPENA | nak;
if (((DWC_EPCTL(epnum, epdir) >> 18) & 0x3) == EPTYP_ISOCHRONOUS)
{
/* Schedule the transfer for the next frame. */
if ((DWC_DSTS >> 8) & 1)
DWC_EPCTL(epnum, epdir) |= EPENA | nak | SETD0PIDEF;
else
DWC_EPCTL(epnum, epdir) |= EPENA | nak | SETD1PIDOF;
}
else
{
DWC_EPCTL(epnum, epdir) |= EPENA | nak;
}
#ifdef USB_DW_ARCH_SLAVE
/* Enable interrupts to start pushing data into the FIFO */
@ -1444,7 +1461,7 @@ void usb_drv_ep_init(const struct usb_drv_ep_alloc_ctx* ctx, int ep)
{
if(type == EPTYP_ISOCHRONOUS)
{
mps = 1023;
mps = usb_drv_port_speed() ? 1024 : 1023;
}
else
{