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- From 88ca61467a0897c79b1fbf8f5c30691b43b52613 Mon Sep 17 00:00:00 2001
- From: Christian Lamparter <[email protected]>
- Date: Sun, 26 Dec 2021 22:36:29 +0200
- Subject: [PATCH] dwc2: temporary force to be powered up all times
- the APM821xx's onchip dwc2 misbehaves with 5.4 and 5.10
- when a USB device gets connected. Instead of announcing
- and setting up the USB devices it crashes and burns with:
- [ 22.023476] dwc2 4bff80000.usbotg: dwc2_restore_global_registers: no global registers to restore
- [ 22.032245] dwc2 4bff80000.usbotg: dwc2_exit_partial_power_down: failed to restore registers
- [ 22.040647] dwc2 4bff80000.usbotg: exit partial_power_down failed
- [ 22.058765] dwc2 4bff80000.usbotg: HC died; cleaning up
- This is all seemingly fixed with dwc2 from a 5.16-rc6.
- Signed-off-by: Christian Lamparter <[email protected]>
- ---
- --- a/drivers/usb/dwc2/params.c
- +++ b/drivers/usb/dwc2/params.c
- @@ -137,6 +137,7 @@ static void dwc2_set_amcc_params(struct
- struct dwc2_core_params *p = &hsotg->params;
-
- p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT;
- + p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
- }
-
- static void dwc2_set_stm32f4x9_fsotg_params(struct dwc2_hsotg *hsotg)
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