Merge tag 'v6.6.83' into for/openbmc/dev-6.6

This is the 6.6.83 stable release

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Merge tag 'v6.6.83' into for/openbmc/dev-6.6

This is the 6.6.83 stable release

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# gpg: Signature made Thu 13 Mar 2025 22:29:54 ACDT
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# gpg: gregkh@kernel.org: Verified 12 signatures in the past 7 weeks. Encrypted
# 0 messages.
# gpg: Warning: you have yet to encrypt a message to this key!
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 647F 2865 4894 E3BD 4571 99BE 38DB BDC8 6092 693E

show more ...

usb: dwc3: gadget: Prevent irq storm when TH re-executes

commit 69c58deec19628c8a686030102176484eb94fed4 upstream.

While commit d325a1de49d6 ("usb: dwc3: gadget: Prevent losing events in
event cach

usb: dwc3: gadget: Prevent irq storm when TH re-executes

commit 69c58deec19628c8a686030102176484eb94fed4 upstream.

While commit d325a1de49d6 ("usb: dwc3: gadget: Prevent losing events in
event cache") makes sure that top half(TH) does not end up overwriting the
cached events before processing them when the TH gets invoked more than one
time, returning IRQ_HANDLED results in occasional irq storm where the TH
hogs the CPU. The irq storm can be prevented by the flag before event
handler busy is cleared. Default enable interrupt moderation in all
versions which support them.

ftrace event stub during dwc3 irq storm:
irq/504_dwc3-1111 ( 1111) [000] .... 70.000866: irq_handler_exit: irq=14 ret=handled
irq/504_dwc3-1111 ( 1111) [000] .... 70.000872: irq_handler_entry: irq=504 name=dwc3
irq/504_dwc3-1111 ( 1111) [000] .... 70.000874: irq_handler_exit: irq=504 ret=handled
irq/504_dwc3-1111 ( 1111) [000] .... 70.000881: irq_handler_entry: irq=504 name=dwc3
irq/504_dwc3-1111 ( 1111) [000] .... 70.000883: irq_handler_exit: irq=504 ret=handled
irq/504_dwc3-1111 ( 1111) [000] .... 70.000889: irq_handler_entry: irq=504 name=dwc3
irq/504_dwc3-1111 ( 1111) [000] .... 70.000892: irq_handler_exit: irq=504 ret=handled
irq/504_dwc3-1111 ( 1111) [000] .... 70.000898: irq_handler_entry: irq=504 name=dwc3
irq/504_dwc3-1111 ( 1111) [000] .... 70.000901: irq_handler_exit: irq=504 ret=handled
irq/504_dwc3-1111 ( 1111) [000] .... 70.000907: irq_handler_entry: irq=504 name=dwc3
irq/504_dwc3-1111 ( 1111) [000] .... 70.000909: irq_handler_exit: irq=504 ret=handled
irq/504_dwc3-1111 ( 1111) [000] .... 70.000915: irq_handler_entry: irq=504 name=dwc3
irq/504_dwc3-1111 ( 1111) [000] .... 70.000918: irq_handler_exit: irq=504 ret=handled
irq/504_dwc3-1111 ( 1111) [000] .... 70.000924: irq_handler_entry: irq=504 name=dwc3
irq/504_dwc3-1111 ( 1111) [000] .... 70.000927: irq_handler_exit: irq=504 ret=handled
irq/504_dwc3-1111 ( 1111) [000] .... 70.000933: irq_handler_entry: irq=504 name=dwc3
irq/504_dwc3-1111 ( 1111) [000] .... 70.000935: irq_handler_exit: irq=504 ret=handled
....

Cc: stable <stable@kernel.org>
Suggested-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Fixes: d325a1de49d6 ("usb: dwc3: gadget: Prevent losing events in event cache")
Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20250216223003.3568039-1-badhri@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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usb: dwc3: Set SUSPENDENABLE soon after phy init

commit cc5bfc4e16fc1d1c520cd7bb28646e82b6e69217 upstream.

After phy initialization, some phy operations can only be executed while
in lower P states

usb: dwc3: Set SUSPENDENABLE soon after phy init

commit cc5bfc4e16fc1d1c520cd7bb28646e82b6e69217 upstream.

After phy initialization, some phy operations can only be executed while
in lower P states. Ensure GUSB3PIPECTL.SUSPENDENABLE and
GUSB2PHYCFG.SUSPHY are set soon after initialization to avoid blocking
phy ops.

Previously the SUSPENDENABLE bits are only set after the controller
initialization, which may not happen right away if there's no gadget
driver or xhci driver bound. Revise this to clear SUSPENDENABLE bits
only when there's mode switching (change in GCTL.PRTCAPDIR).

Fixes: 6d735722063a ("usb: dwc3: core: Prevent phy suspend during init")
Cc: stable <stable@kernel.org>
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/633aef0afee7d56d2316f7cc3e1b2a6d518a8cc9.1738280911.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Merge tag 'v6.6.76' into for/openbmc/dev-6.6

This is the 6.6.76 stable release

Conflicts:
arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts

Conflicts were resolved in favour of our side a

Merge tag 'v6.6.76' into for/openbmc/dev-6.6

This is the 6.6.76 stable release

Conflicts:
arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts

Conflicts were resolved in favour of our side as the upstream stable
branches cherry-picked a small number of changes out of a much large
series, which has already been backported.

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usb: dwc3: core: Defer the probe until USB power supply ready

commit 66e0ea341a2a78d14336117f19763bd9be26d45d upstream.

Currently, DWC3 driver attempts to acquire the USB power supply only
once dur

usb: dwc3: core: Defer the probe until USB power supply ready

commit 66e0ea341a2a78d14336117f19763bd9be26d45d upstream.

Currently, DWC3 driver attempts to acquire the USB power supply only
once during the probe. If the USB power supply is not ready at that
time, the driver simply ignores the failure and continues the probe,
leading to permanent non-functioning of the gadget vbus_draw callback.

Address this problem by delaying the dwc3 driver initialization until
the USB power supply is registered.

Fixes: 6f0764b5adea ("usb: dwc3: add a power supply for current control")
Cc: stable <stable@kernel.org>
Signed-off-by: Kyle Tso <kyletso@google.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20250115044548.2701138-1-kyletso@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

show more ...

Merge tag 'v6.6.61' into for/openbmc/dev-6.6

This is the 6.6.61 stable release

usb: dwc3: fix fault at system suspend if device was already runtime suspended

commit 9cfb31e4c89d200d8ab7cb1e0bb9e6e8d621ca0b upstream.

If the device was already runtime suspended then during syst

usb: dwc3: fix fault at system suspend if device was already runtime suspended

commit 9cfb31e4c89d200d8ab7cb1e0bb9e6e8d621ca0b upstream.

If the device was already runtime suspended then during system suspend
we cannot access the device registers else it will crash.

Also we cannot access any registers after dwc3_core_exit() on some
platforms so move the dwc3_enable_susphy() call to the top.

Cc: stable@vger.kernel.org # v5.15+
Reported-by: William McVicker <willmcvicker@google.com>
Closes: https://lore.kernel.org/all/ZyVfcUuPq56R2m1Y@google.com
Fixes: 705e3ce37bcc ("usb: dwc3: core: Fix system suspend on TI AM62 platforms")
Signed-off-by: Roger Quadros <rogerq@kernel.org>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Tested-by: Will McVicker <willmcvicker@google.com>
Link: https://lore.kernel.org/r/20241104-am62-lpm-usb-fix-v1-1-e93df73a4f0d@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

show more ...

Merge tag 'v6.6.59' into for/openbmc/dev-6.6

This is the 6.6.59 stable release

usb: dwc3: core: Fix system suspend on TI AM62 platforms

[ Upstream commit 705e3ce37bccdf2ed6f848356ff355f480d51a91 ]

Since commit 6d735722063a ("usb: dwc3: core: Prevent phy suspend during init"),

usb: dwc3: core: Fix system suspend on TI AM62 platforms

[ Upstream commit 705e3ce37bccdf2ed6f848356ff355f480d51a91 ]

Since commit 6d735722063a ("usb: dwc3: core: Prevent phy suspend during init"),
system suspend is broken on AM62 TI platforms.

Before that commit, both DWC3_GUSB3PIPECTL_SUSPHY and DWC3_GUSB2PHYCFG_SUSPHY
bits (hence forth called 2 SUSPHY bits) were being set during core
initialization and even during core re-initialization after a system
suspend/resume.

These bits are required to be set for system suspend/resume to work correctly
on AM62 platforms.

Since that commit, the 2 SUSPHY bits are not set for DEVICE/OTG mode if gadget
driver is not loaded and started.
For Host mode, the 2 SUSPHY bits are set before the first system suspend but
get cleared at system resume during core re-init and are never set again.

This patch resovles these two issues by ensuring the 2 SUSPHY bits are set
before system suspend and restored to the original state during system resume.

Cc: stable@vger.kernel.org # v6.9+
Fixes: 6d735722063a ("usb: dwc3: core: Prevent phy suspend during init")
Link: https://lore.kernel.org/all/1519dbe7-73b6-4afc-bfe3-23f4f75d772f@kernel.org/
Signed-off-by: Roger Quadros <rogerq@kernel.org>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Tested-by: Markus Schneider-Pargmann <msp@baylibre.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Link: https://lore.kernel.org/r/20241011-am62-lpm-usb-v3-1-562d445625b5@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

show more ...

Merge tag 'v6.6.57' into for/openbmc/dev-6.6

This is the 6.6.57 stable release

usb: dwc3: core: Stop processing of pending events if controller is halted

commit 0d410e8913f5cffebcca79ffdd596009d4a13a28 upstream.

This commit addresses an issue where events were being processed

usb: dwc3: core: Stop processing of pending events if controller is halted

commit 0d410e8913f5cffebcca79ffdd596009d4a13a28 upstream.

This commit addresses an issue where events were being processed when
the controller was in a halted state. To fix this issue by stop
processing the events as the event count was considered stale or
invalid when the controller was halted.

Fixes: fc8bb91bc83e ("usb: dwc3: implement runtime PM")
Cc: stable@kernel.org
Signed-off-by: Selvarasu Ganesan <selvarasu.g@samsung.com>
Suggested-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20240916231813.206-1-selvarasu.g@samsung.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

show more ...

Merge tag 'v6.6.51' into for/openbmc/dev-6.6

This is the 6.6.51 stable release

usb: dwc3: core: update LC timer as per USB Spec V3.2

commit 9149c9b0c7e046273141e41eebd8a517416144ac upstream.

This fix addresses STAR 9001285599, which only affects DWC_usb3 version
3.20a. The ti

usb: dwc3: core: update LC timer as per USB Spec V3.2

commit 9149c9b0c7e046273141e41eebd8a517416144ac upstream.

This fix addresses STAR 9001285599, which only affects DWC_usb3 version
3.20a. The timer value for PM_LC_TIMER in DWC_usb3 3.20a for the Link
ECN changes is incorrect. If the PM TIMER ECN is enabled via GUCTL2[19],
the link compliance test (TD7.21) may fail. If the ECN is not enabled
(GUCTL2[19] = 0), the controller will use the old timer value (5us),
which is still acceptable for the link compliance test. Therefore, clear
GUCTL2[19] to pass the USB link compliance test: TD 7.21.

Cc: stable@vger.kernel.org
Signed-off-by: Faisal Hassan <quic_faisalh@quicinc.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20240829094502.26502-1-quic_faisalh@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Merge tag 'v6.6.49' into for/openbmc/dev-6.6

This is the 6.6.49 stable release

usb: dwc3: core: Prevent USB core invalid event buffer address access

commit 14e497183df28c006603cc67fd3797a537eef7b9 upstream.

This commit addresses an issue where the USB core could access an
inv

usb: dwc3: core: Prevent USB core invalid event buffer address access

commit 14e497183df28c006603cc67fd3797a537eef7b9 upstream.

This commit addresses an issue where the USB core could access an
invalid event buffer address during runtime suspend, potentially causing
SMMU faults and other memory issues in Exynos platforms. The problem
arises from the following sequence.
1. In dwc3_gadget_suspend, there is a chance of a timeout when
moving the USB core to the halt state after clearing the
run/stop bit by software.
2. In dwc3_core_exit, the event buffer is cleared regardless of
the USB core's status, which may lead to an SMMU faults and
other memory issues. if the USB core tries to access the event
buffer address.

To prevent this hardware quirk on Exynos platforms, this commit ensures
that the event buffer address is not cleared by software when the USB
core is active during runtime suspend by checking its status before
clearing the buffer address.

Cc: stable <stable@kernel.org>
Signed-off-by: Selvarasu Ganesan <selvarasu.g@samsung.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20240815064836.1491-1-selvarasu.g@samsung.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Merge tag 'v6.6.48' into for/openbmc/dev-6.6

This is the 6.6.48 stable release

usb: dwc3: core: Skip setting event buffers for host only controllers

[ Upstream commit 89d7f962994604a3e3d480832788d06179abefc5 ]

On some SoC's like SA8295P where the tertiary controller is host-o

usb: dwc3: core: Skip setting event buffers for host only controllers

[ Upstream commit 89d7f962994604a3e3d480832788d06179abefc5 ]

On some SoC's like SA8295P where the tertiary controller is host-only
capable, GEVTADDRHI/LO, GEVTSIZ, GEVTCOUNT registers are not accessible.
Trying to access them leads to a crash.

For DRD/Peripheral supported controllers, event buffer setup is done
again in gadget_pullup. Skip setup or cleanup of event buffers if
controller is host-only capable.

Suggested-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Krishna Kurapati <quic_kriskura@quicinc.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Tested-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20240420044901.884098-4-quic_kriskura@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Merge tag 'v6.6.37' into dev-6.6

This is the 6.6.37 stable release

usb: dwc3: core: Workaround for CSR read timeout

commit fc1d1a712b517bbcb383b1f1f7ef478e7d0579f2 upstream.

This is a workaround for STAR 4846132, which only affects
DWC_usb31 version2.00a operating

usb: dwc3: core: Workaround for CSR read timeout

commit fc1d1a712b517bbcb383b1f1f7ef478e7d0579f2 upstream.

This is a workaround for STAR 4846132, which only affects
DWC_usb31 version2.00a operating in host mode.

There is a problem in DWC_usb31 version 2.00a operating
in host mode that would cause a CSR read timeout When CSR
read coincides with RAM Clock Gating Entry. By disable
Clock Gating, sacrificing power consumption for normal
operation.

Cc: stable <stable@kernel.org> # 5.10.x: 1e43c86d: usb: dwc3: core: Add DWC31 version 2.00a controller
Signed-off-by: Jos Wang <joswang@lenovo.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20240619114529.3441-1-joswang1221@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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usb: dwc3: core: remove lock of otg mode during gadget suspend/resume to avoid deadlock

commit 7838de15bb700c2898a7d741db9b1f3cbc86c136 upstream.

When config CONFIG_USB_DWC3_DUAL_ROLE is selected,

usb: dwc3: core: remove lock of otg mode during gadget suspend/resume to avoid deadlock

commit 7838de15bb700c2898a7d741db9b1f3cbc86c136 upstream.

When config CONFIG_USB_DWC3_DUAL_ROLE is selected, and trigger system
to enter suspend status with below command:
echo mem > /sys/power/state
There will be a deadlock issue occurring. Detailed invoking path as
below:
dwc3_suspend_common()
spin_lock_irqsave(&dwc->lock, flags); <-- 1st
dwc3_gadget_suspend(dwc);
dwc3_gadget_soft_disconnect(dwc);
spin_lock_irqsave(&dwc->lock, flags); <-- 2nd
This issue is exposed by commit c7ebd8149ee5 ("usb: dwc3: gadget: Fix
NULL pointer dereference in dwc3_gadget_suspend") that removes the code
of checking whether dwc->gadget_driver is NULL or not. It causes the
following code is executed and deadlock occurs when trying to get the
spinlock. In fact, the root cause is the commit 5265397f9442("usb: dwc3:
Remove DWC3 locking during gadget suspend/resume") that forgot to remove
the lock of otg mode. So, remove the redundant lock of otg mode during
gadget suspend/resume.

Fixes: 5265397f9442 ("usb: dwc3: Remove DWC3 locking during gadget suspend/resume")
Cc: Xu Yang <xu.yang_2@nxp.com>
Cc: stable@vger.kernel.org
Signed-off-by: Meng Li <Meng.Li@windriver.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20240618031918.2585799-1-Meng.Li@windriver.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

show more ...

Merge tag 'v6.6.31' into dev-6.6

This is the 6.6.31 stable release

usb: dwc3: core: Prevent phy suspend during init

commit 6d735722063a945de56472bdc6bfcb170fd43b86 upstream.

GUSB3PIPECTL.SUSPENDENABLE and GUSB2PHYCFG.SUSPHY should be cleared
during initialization.

usb: dwc3: core: Prevent phy suspend during init

commit 6d735722063a945de56472bdc6bfcb170fd43b86 upstream.

GUSB3PIPECTL.SUSPENDENABLE and GUSB2PHYCFG.SUSPHY should be cleared
during initialization. Suspend during initialization can result in
undefined behavior due to clock synchronization failure, which often
seen as core soft reset timeout.

The programming guide recommended these bits to be cleared during
initialization for DWC_usb3.0 version 1.94 and above (along with
DWC_usb31 and DWC_usb32). The current check in the driver does not
account if it's set by default setting from coreConsultant.

This is especially the case for DRD when switching mode to ensure the
phy clocks are available to change mode. Depending on the
platforms/design, some may be affected more than others. This is noted
in the DWC_usb3x programming guide under the above registers.

Let's just disable them during driver load and mode switching. Restore
them when the controller initialization completes.

Note that some platforms workaround this issue by disabling phy suspend
through "snps,dis_u3_susphy_quirk" and "snps,dis_u2_susphy_quirk" when
they should not need to.

Cc: stable@vger.kernel.org
Fixes: 9ba3aca8fe82 ("usb: dwc3: Disable phy suspend after power-on reset")
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20da4e5a0c4678c9587d3da23f83bdd6d77353e9.1713394973.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

show more ...

Merge tag 'v6.6.24' into dev-6.6

This is the 6.6.24 stable release

usb: dwc3: Properly set system wakeup

commit f9aa41130ac69d13a53ce2a153ca79c70d43f39c upstream.

If the device is configured for system wakeup, then make sure that the
xHCI driver knows about it and

usb: dwc3: Properly set system wakeup

commit f9aa41130ac69d13a53ce2a153ca79c70d43f39c upstream.

If the device is configured for system wakeup, then make sure that the
xHCI driver knows about it and make sure to permit wakeup only at the
appropriate time.

For host mode, if the controller goes through the dwc3 code path, then a
child xHCI platform device is created. Make sure the platform device
also inherits the wakeup setting for xHCI to enable remote wakeup.

For device mode, make sure to disable system wakeup if no gadget driver
is bound. We may experience unwanted system wakeup due to the wakeup
signal from the controller PMU detecting connection/disconnection when
in low power (D3). E.g. In the case of Steam Deck, the PCI PME prevents
the system staying in suspend.

Cc: stable@vger.kernel.org
Reported-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Closes: https://lore.kernel.org/linux-usb/70a7692d-647c-9be7-00a6-06fc60f77294@igalia.com/T/#mf00d6669c2eff7b308d1162acd1d66c09f0853c7
Fixes: d07e8819a03d ("usb: dwc3: add xHCI Host support")
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Tested-by: Sanath S <Sanath.S@amd.com>
Tested-by: Guilherme G. Piccoli <gpiccoli@igalia.com> # Steam Deck
Link: https://lore.kernel.org/r/667cfda7009b502e08462c8fb3f65841d103cc0a.1709865476.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Merge tag 'v6.6.14' into dev-6.6

This is the 6.6.14 stable release