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| author | Christian Lamparter <chunkeey@gmail.com> | 2021-12-24 14:44:08 +0100 |
|---|---|---|
| committer | Christian Lamparter <chunkeey@gmail.com> | 2021-12-27 13:55:10 +0100 |
| commit | 832b9cbd741cdb6cc8483b2cddfef6de000ec61d (patch) | |
| tree | 7913cf37587a89ab265722ba0926a6a4d2fd7d79 /target/linux/apm821xx/patches-5.10 | |
| parent | cf8ee49c9bd37ea3e17abe710353737e0f5f9608 (diff) | |
| download | upstream-832b9cbd741cdb6cc8483b2cddfef6de000ec61d.tar.gz upstream-832b9cbd741cdb6cc8483b2cddfef6de000ec61d.tar.bz2 upstream-832b9cbd741cdb6cc8483b2cddfef6de000ec61d.zip | |
apm821xx: fix WD MyBook Live DUO USB-Port
where to begin? the USB regulator settings were just
a part of the issue. With them changed, according to
the forum it still failed when a USB device was
connected to the port with:
dwc2 4bff80000.usbotg: dwc2_restore_global_registers: no global registers to restore
dwc2 4bff80000.usbotg: dwc2_exit_partial_power_down: failed to restore registers
dwc2 4bff80000.usbotg: exit partial_power_down failed
dwc2 4bff80000.usbotg: HC died; cleaning up
One clue was found upstream in
commit cc10ce0c51b1 ("usb: dwc2: disable power_down on Amlogic devices")
|Disable power_down by setting the parameter to
|DWC2_POWER_DOWN_PARAM_NONE. This fixes a problem on various Amlogic
|Meson SoCs where USB devices are only recognized when plugged in before
|booting Linux. A hot-plugged USB device was not detected even though the
|device got power (my USB thumb drive for example has an LED which lit
|up).
|[...]
the same method proposed there worked with APM821xx's USB IP-Core.
Link: https://forum.openwrt.org/t/wd-my-book-duo-usb/111926/2
Reported-by: thwe and takimata (openwrt forum)
Fixes: b70d3557e05 ("apm821xx: clean up gpio-hogs")
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Diffstat (limited to 'target/linux/apm821xx/patches-5.10')
| -rw-r--r-- | target/linux/apm821xx/patches-5.10/100-dwc2-disable-powerdown.patch | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/target/linux/apm821xx/patches-5.10/100-dwc2-disable-powerdown.patch b/target/linux/apm821xx/patches-5.10/100-dwc2-disable-powerdown.patch new file mode 100644 index 0000000000..ede7d732ff --- /dev/null +++ b/target/linux/apm821xx/patches-5.10/100-dwc2-disable-powerdown.patch @@ -0,0 +1,29 @@ +From 88ca61467a0897c79b1fbf8f5c30691b43b52613 Mon Sep 17 00:00:00 2001 +From: Christian Lamparter <chunkeey@gmail.com> +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 <chunkeey@gmail.com> +--- + +--- 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) |