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Merge tag 'u-boot-dfu-next-20250616' of https://source.denx.de/u-boot/custodians/u-boot-dfu into next

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u-boot-dfu-next-20250616

CI: https://source.denx.de/u-boot/custodians/u-boot-dfu/-/pipelines/26704

Usb gadget:
- Atmel: Improve gadget disconnect stability by power cycling
This commit is contained in:
Tom Rini
2025-06-16 11:06:51 -06:00
parent 4d23c8aeaa ca036308a5
commit 62d24441e0
1 changed files with 7 additions and 7 deletions
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14
drivers/usb/gadget/atmel_usba_udc.c
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@@ -521,16 +521,16 @@ usba_udc_set_selfpowered(struct usb_gadget *gadget, int is_selfpowered)
static int usba_udc_pullup(struct usb_gadget *gadget, int is_on)
{
struct usba_udc *udc = to_usba_udc(gadget);
u32 ctrl;
ctrl = usba_readl(udc, CTRL);
/*
* Some chips don't reliably drive DP/DM lines to high impedance when
* using the DETACH/PULLD_DIS bits.
* To ensure a reliable disconnect, power cycle the controller instead
*/
if (is_on)
ctrl &= ~USBA_DETACH;
usba_writel(udc, CTRL, USBA_ENABLE_MASK);
else
ctrl |= USBA_DETACH;
usba_writel(udc, CTRL, ctrl);
usba_writel(udc, CTRL, USBA_DISABLE_MASK);
return 0;
}