Commit graph

78059 commits

Author SHA1 Message Date
Pali Rohár
107d587fe2 tools: kwbimage: Fix help how to extract DDR3 training code
First binary executable header is extracted by '-p 1' argument.

Signed-off-by: Pali Rohár <pali@kernel.org>
Tested-by: Tony Dinh <mibodhi@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
a6661a0ea2 tools: kwbimage: Add support for NAND_BLKSZ and NAND_BADBLK_LOCATION for v0 images
These two commands are currently not processed when generating v0 images.

Signed-off-by: Pali Rohár <pali@kernel.org>
Tested-by: Tony Dinh <mibodhi@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
e65ea147e2 tools: kwbimage: Do not show mkimage error message in dumpimage
When pflag is set then kwbimage was invoked by dumpimage and not mkimage.
So do not show mkimage error message in this case.

Signed-off-by: Pali Rohár <pali@kernel.org>
Tested-by: Tony Dinh <mibodhi@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
f76ae2571f tools: kwbimage: Add support for dumping extended and binary v0 headers
dumpimage is now able to successfully parse and dump content of the Dove
bootloader image.

Note that support for generating these extended parts of v0 images is not
included yet.

Signed-off-by: Pali Rohár <pali@kernel.org>
Tested-by: Tony Dinh <mibodhi@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
9a9a2c1acf tools: kwbimage: Fix calculating size of kwbimage v0 header
Extended and binary headers are optional and are part of the image header.

Fixes kwboot to determinate correct length of Dove images.

Signed-off-by: Pali Rohár <pali@kernel.org>
Tested-by: Tony Dinh <mibodhi@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
3917ec57f7 tools: kwbimage: Define structures for extended kwbimage v0 headers
They are used by Marvell Dove 88AP510 BootROM.

After the main header is a list of optional extended headers and after that
is a list of optional binary executable headers. Between each two extended
headers is additional 0x20 byte long padding.

Original Kirkwood SoCs support only one extended header and no binary
executable header.

Extension of struct ext_hdr_v0 is backward compatible with the old
definition. Only reserved[] fields are changed.

Signed-off-by: Pali Rohár <pali@kernel.org>
Tested-by: Tony Dinh <mibodhi@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Marek Behún
a163db9fba ddr: marvell: a38x: fix BYTE_HOMOGENEOUS_SPLIT_OUT decision
In commit 3fc92a215b ("ddr: marvell: a38x: fix SPLIT_OUT_MIX state
decision") I ported a cleaned up and changed version of patch
  mv_ddr: a380: fix SPLIT_OUT_MIX state decision

In the port we removed checking for BYTE_HOMOGENEOUS_SPLIT_OUT bit,
because:
- the fix seemed to work without it
- the bit was checked for only at one place out of two, while the second
  bit, BYTE_SPLIT_OUT_MIX, was checked for in both cases
- without the removal it didn't work on Allied Telesis' x530 board

We recently had a chance to test on more boards, and it seems that the
change needs to be opposite: instead of removing the check for
BYTE_HOMOGENEOUS_SPLIT_OUT from the first if() statement, the check
needs to be added also to the second one - it needs to be at both
places.

With this change all the Turris Omnia boards I have had available to
test seem to work, I didn't encounter not even one failed DDR training.

As last time, I am noting that I do not understand what this code is
actually doing, I haven't studied the DDR training algorithm and
I suspect that no one will be able to explain it to U-Boot contributors,
so we are left with this blind poking in the code with testing whether
it works on several boards and hoping it doesn't break anything for
anyone :-(.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Tested-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
18ab060288 arm: mvebu: a37xx: Fix comment with name of the function
Function is named build_mem_map, not a3700_build_mem_map.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
2022-02-17 14:17:07 +01:00
Pali Rohár
65375d026a arm: mvebu: a37xx: Map CCI-400 and AP BootROM address space
In function build_mem_map() prepare also mapping for CCI-400 and
BootROM windows.

BootROM window is 1 MB long and by default starts at address 0xfff00000.
A53 AP BootROM is 16 kB long and repeats in this BootROM window 64 times.
RVBAR_EL3 register is set to value 0xffff0000, so by default A53 AP BootROM
is accessed via range 0xffff0000-0xffff3fff.

CCI-400 window when new TF-A version is used, starts at address 0xfe000000
and when old TF-A version is used, starts at address 0xd8000000.

Physical addresses are read directly from mvebu registers, so if TF-A
remaps it in future (again) then it would not cause any issue for U-Boot.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
2fb7426cf0 arm: mvebu: a37xx: Fix calling build_mem_map()
Function build_mem_map() modifies global variable mem_map. This variable is
used by the get_page_table_size() function which is called by function
arm_reserve_mmu() (as aliased macro PGTABLE_SIZE). Function
arm_reserve_mmu() is called earlier than enable_caches() which calls
build_mem_map(). So arm_reserve_mmu() does not calculate reserved memory
correctly.

Fix this issue by calling build_mem_map() from a3700_dram_init() which is
called before arm_reserve_mmu().

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
2022-02-17 14:17:07 +01:00
Pali Rohár
0eebc3dbe5 pci: mvebu: Ensure that root port is always on root zero bus
Writing to the PCI_PRIMARY_BUS register of the root port should not change
bus number on which is root port present.

Same change and exactly same fix as was done in commit for pci-aardvark.c.

Fixes: a7b61ab58d ("pci: pci_mvebu: Properly configure and use PCI Bridge (PCIe Root Port)")
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
682bad8cec arm: a37xx: pci: Update comment about Command/Direct mode
Code is changing PCIe controller from Command mode to Direct mode.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
6c7ccb9700 arm: a37xx: pci: Register controller also when no PCIe card is connected
Allow access to config space of PCIe Root Port (which is always present on
the root bus) even when PCIe link is down or no card is connected.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
2727e9dd27 arm: a37xx: pci: Do not try to access other buses when link is down
If a PIO request is executed while link-down, the whole controller gets
stuck in a non-functional state, and even after link comes up again, PIO
requests won't work anymore, and a reset of the whole PCIe controller is
needed. Therefore we need to prevent sending PIO requests while the link
is down.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
0934dddc64 arm: a37xx: Update DTS files to version from upstream Linux kernel
This change updates all Armada 37xx DTS files to version which is used by
Linux kernel v5.18.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
6560bf4ede arm: a37xx: espressobin: Explicitly enable eMMC node in -u-boot.dtsi
Official DT bindings for Espressobin have disabled eMMC node.

As U-Boot requires to have this node enabled by default, do it in
armada-3720-espressobin-u-boot.dtsi DTS file.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
a134aaa54e arm: a37xx: espressobin: Move U-Boot specific partitions node to -u-boot.dtsi
U-Boot specific changes should be in armada-3720-espressobin-u-boot.dtsi DTS file.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
9dde7a09fc arm: a37xx: Update sdhci pointers to official DT bindings
In Linux kernel version of armada-37xx.dtsi file sdhci1 pointer refers to
sdhci@d0000 node and sdhci0 pointer to sdhci@d8000 node.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
bf1f1668bb arm: mvebu: turris_mox: Remove hardcoded ethernet node names
Armada 3720 DTS files in upstream kernel use ethernet nodes named
'ethernet@30000' and 'ethernet@40000'. U-Boot have them named 'neta@30000'
and 'neta@40000'. To have Turris Mox U-Boot board code independent of
ethernet node names, find ethernet node via alias.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
0c4625ac7d watchdog: armada_37xx: Convert to official DT bindings
Official DT bindings have only one reg property: watchdog address space.
Convert armada-37xx-wdt.c driver to offical DT bindings and access sel_reg
register via MVEBU_REGISTER() macro, as its value (required by U-Boot
driver) is not in DT yet. In later stage can be driver cleaned to not use
it.

This change would allow U-Boot to use A3720 watchdog DTS structure from
Linux kernel.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
af6d0938f3 usb: ehci: ehci-marvell: Update compatible string to official DT bindings
Official DT bindings use compatible string marvell,armada-3700-ehci.
Update drivers and DTS files.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
9bc68546bb phy: marvell: a3700: Update compatible string to official DT bindings
In commit d368e10705 ("phy: marvell: a3700: Convert to official DT
bindings in COMPHY driver") was done update to official DT bindings but
compatible string of official DT bindings was not updated.

Fix it now.

Fixes: d368e10705 ("phy: marvell: a3700: Convert to official DT bindings in COMPHY driver")
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
48c144f8ef rtc: ds1307: Add bindings for microchip, mcp7940x
Compatible string microchip,mcp7940x is used by Turris Mox DTS file in
Linux kernel and U-Boot ds1307.c driver works fine with it.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
a2389213f2 tools: kwbimage: Fix dumping DATA registers for v0 images
End of DATA register section is indicated by zero value in both raddr and
rdata.

So do not stop dumping registers with non-zero address and zero value.
And also print end of DATA registers section.

Fixes: 1a8e6b63e2 ("tools: kwbimage: Dump kwbimage config file on '-p -1' option")
Signed-off-by: Pali Rohár <pali@kernel.org>
Reported-by: Tony Dinh <mibodhi@gmail.com>
Tested-by: Tony Dinh <mibodhi@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
2a9059aef5 arm: a37xx: pci: Ensure that root port is always on root zero bus
Writing to the PCI_PRIMARY_BUS register of the root port should not change
bus number on which is root port present.

This PCI_PRIMARY_BUS register is used only for correct configuration of
legacy PCI stuff, like forwarding of PCI special cycles between buses.

Aardvark HW does not support PCI special cycles, so it does not have HW
register for PCI_PRIMARY_BUS and therefore it does not matter what is
stored in this register.

So fix this issue and do not use PCI_PRIMARY_BUS register in pci-aardvark.c
driver for moving root bus of the root port.

After this change there is no reason for storing bus number (zero) into
first_busno variable, so remove this variable.

Signed-off-by: Pali Rohár <pali@kernel.org>
Fixes: cb056005dc ("arm: a37xx: pci: Add support for accessing PCI Bridge on root bus")
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
45e3fe65f6 arm: a37xx: pci: Use dev_read_addr()
There is only one base address, so use dev_read_addr() instead of dev_read_addr_index().

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
cf2a589a89 arm: a37xx: pci: Cleanup macro names
Remove "PCI_" prefix from all macros which are aardvark specific to not
conflict with macros defined in global include file pci.h. Instead add
"ADVK_" prefix for them so it is visible that they are aardvark specific.

After "ADVK_" prefix append keyword which describes register group, so it
would be clear to which register each macro value belongs.

Rename some macros for consistency with other macros.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
819a43c90a arm: a37xx: pci: Use standard register macros from pci.h
PCI config space of the aardvark PCIe Root Port is available only in
internal aardvark memory space starting at offset 0x0. PCI Express
registers (PCI_EXP_*) start at offset 0xc0. And Advanced Error Reporting
registers (PCI_ERR_*) start at offset 0x100.

Replace custom aardvark register macros by standard PCI macros from
include/pci.h file with fixed offset.

Some DEVCTL and AER macros are not defined in include/pci.h file, so define
them in the same way as in linux uapi header file pci_regs.h.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Tom Rini
b627718939 Merge branch 'master' of git://source.denx.de/u-boot-usb 2022-02-16 18:21:41 -05:00
Tom Rini
6bb2557da2 Merge branch '2022-02-16-add-TI-J721E-SK'
- Add TI J721E SK support
2022-02-16 18:21:21 -05:00
Sinthu Raja
bc2972bd9a arm: dts: k3-j721e-r5-sk: Update R5 DT to pick the new DDR config
A new lpddr4 configuration is introduced for J7 SK with 4266 MTs data
rate. Therefore, update the R5 DTS file to point to the new DDR config
file.

Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>
2022-02-16 14:19:30 -05:00
Sinthu Raja
51f660120f arm: dts: k3-j721e-sk: EMIF tool update to 0.6.1 with 4266MTs for lpddr4
EMIF tool for J721E SK is now updated to 0.6.1 that includes
* Updated write DQ training pattern to enable user pattern and clock
  pattern (from 0x7 to 0x6).
* Updated IO drive strength to 40-80-80 Ohms.

J721E SK uses the lpddr4 configuration of 4266 MTs data rate which is
the same as J721E EVM but facing random failures. As the tool update is
specific to the SK board, add a new lpddr4 config of 4266 MTs.

Signed-off-by: Kevin Scholz <k-scholz@ti.com>
Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>
2022-02-16 14:19:30 -05:00
Sinthu Raja
0ca9f70423 include: configs: Update env for selecting right dtb
Now that single defconfig can be used for booting J721E EVM and
SK, default device tree will not work for selecting dtb for
kernel. Update the findfdt env to select right dtb based on
board_name env variable.

Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>
2022-02-16 14:19:30 -05:00
Sinthu Raja
8e0758aa6e configs: j721e_evm: Store env in MMC FAT partition
Enable defconfigs relevant for storing env on FAT partion of MMC.

Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>
2022-02-16 14:19:30 -05:00
Sinthu Raja
c4ba922153 configs: j721e_evm_a72: Align OSPI partitions on erase block boundary
S28HS512T on TI SK has sector size of 256KB, so update OSPI partition
to align on 256KB sector size. Since the sector size for MT35XU512ABA
on EVM is 128KB, partitions will remain aligned for EVM.

Also, now since the sector size is 256KB ospi.env.backup will collide
with ospi.sysfw, so move ospi.env.backup to the padding space (0x7C0000)
before ospi.rootfs partition.

Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>
2022-02-16 14:19:30 -05:00
Sinthu Raja
9bb621aad3 configs: j721e_evm_a72: Add SK dtb as part of DTB FIT
Add k3-j721e-sk dtb along with other dtbs inside DTB FIT image.

Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>
2022-02-16 14:19:30 -05:00
Sinthu Raja
d9c59a3da1 configs: j721e_evm_r5: Enable support for building multiple dtbs into FIT
Enable configs for building multiple dtbs into a single fit image
and load the right dtb for next stage. This will help to use same
defconfig for both J721E EVM and SK boards.

Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>
2022-02-16 14:19:30 -05:00
Sinthu Raja
daad7d6d85 arm: dts: k3-j721e-r5-sk: Add initial R5 specific dts support for j721e-sk
Add R5 specific dts for J721E-SK

Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>
2022-02-16 14:19:30 -05:00
Sinthu Raja
58d61fb5a7 arm: dts: k3-j721e-sk: Add initial A72 specific dts support
J721E Starter Kit (SK)[1] is a low cost, small form factor board designed
for TI’s J721E SoC. TI’s J721E SoC comprises of dual core A72, high
performance vision accelerators, video codec accelerators, latest C71x
and C66x DSP, high bandwidth real-time IPs for capture and display, GPU,
dedicated safety island and security accelerators. The SoC is power
optimized to provide best in class performance for industrial and
automotive applications.

    J721E SK supports the following interfaces:
    * 4 GB LPDDR4 RAM
    * x1 Gigabit Ethernet interface
    * x1 USB 3.0 Type-C port
    * x3 USB 3.0 Type-A ports
    * x1 PCIe M.2 E Key
    * x1 PCIe M.2 M Key
    * 512 Mbit OSPI flash
    * x2 CSI2 Camera interface (RPi and TI Camera connector)
    * 40-pin Raspberry Pi GPIO header

Add A72 specific dts for J721E-SK.

[1] https://www.ti.com/tool/SK-TDA4VM

Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>
2022-02-16 14:19:30 -05:00
Sinthu Raja
1157f36724 arm: dts: k3-j721e-r5-common-proc-board: Do not use power-domains for I2C
Board ID I2C EEPROM will be probed before SYSFW is available.
So drop the power-domains property for wakup_i2c0 on which
board ID EEPROM is connected.

Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>
2022-02-16 14:19:30 -05:00
Sinthu Raja
1e82a80d17 arm: j721e: Add support for selecting DT based on board name
Enable support for selecting DTB from FIT within SPL based on the
board name read from EEPROM. This will help to use single defconfig
for both EVM and SK.

Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>
2022-02-16 14:19:30 -05:00
Sinthu Raja
d8004919aa board: ti: j721e: Add support for detecting multiple device trees
Update the board_fit_config_name_match() to choose the right dtb
based on the board name read from EEPROM.

Also restrict multpile EEPROM reads by verifying if EEPROM is already
read.

Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>
2022-02-16 14:19:30 -05:00
Sinthu Raja
ee59fa45c8 board: ti: j721e: Disable probing of daughtercards
j721e-sk doesn't have any daughter cards, so disable daughter
card probing inside board_late_init() and spl_board_init() for
j721e-sk.

Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>
2022-02-16 14:19:30 -05:00
Sinthu Raja
dfb2429ff4 board: ti: j721e: Add support to update board_name for j721e-sk
Update setup_board_eeprom_env() to choose the right board name
for j721e-sk.

Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>
2022-02-16 14:19:30 -05:00
Sinthu Raja
a46c5289b7 board: ti: j721e: Enable support for reading EEPROM at next alternate address
J721E EVM has EEPROM populated at 0x50. J721E SK has EEPROM populated
at next address 0x51 in order to be compatible with RPi. So start
looking for TI specific EEPROM at 0x50, if not found look for EEPROM at
0x51.

Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>
2022-02-16 14:19:30 -05:00
Sinthu Raja
d948fc4e66 board: ti: j721e: Guard functions with right #ifdef to avoid build warnings
board_late_init(), setup_board_eeprom_env() and setup_serial() is
called only under CONFIG_BOARD_LATE_INIT, so guard these functions
with the same. Also, reorder these functions to place it under
single #ifdef

Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>
2022-02-16 14:19:30 -05:00
Sinthu Raja
df1fa2718f drivers: power: regulator: tps65941_regulator: Add support for 3Phase buck
Buck regulator 1, 2 and 3 of TPS6594132 on j721e-sk is in 3 Phase
confguration, in-order to support this, add configuring 3 Phase buck
in tps65941 while driver probing.

Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
2022-02-16 14:19:29 -05:00
Sinthu Raja
3d32ad4d24 drivers: power: pmic: Add support for tps659412 PMIC
Since TPS659412 and TPS659413 are both software compatible,
add a compatible string for the same inside tps65941.c.

Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
2022-02-16 14:19:29 -05:00
Tom Rini
545026a554 fdtdec.h: Remove gurads around fdtdec_resetup function
This function has not been conditionally compiled for some time, so
remove the incorrect guards around the declaration.

Signed-off-by: Tom Rini <trini@konsulko.com>
2022-02-16 14:19:29 -05:00
Stefan Agner
d5daa02d8d usb: xhci: reset endpoint on USB stall
There are devices which cause a USB stall when trying to read strings.
Specifically Arduino Mega R3 stalls when trying to read the product
string.

The stall currently remains unhandled, and subsequent retries submit new
transfers on a stopped endpoint which ultimately cause a crash in
abort_td():
WARN halted endpoint, queueing URB anyway.
XHCI control transfer timed out, aborting...
Unexpected XHCI event TRB, skipping... (3affe040 00000000 13000000 02008401)
BUG at drivers/usb/host/xhci-ring.c:505/abort_td()!
BUG!
resetting ...

Linux seems to be able to recover from the stall by issuing a
TRB_RESET_EP command.

Introduce reset_ep() which issues a TRB_RESET_EP followed by setting the
transfer ring dequeue pointer via TRB_SET_DEQ. This allows to properly
recover from a USB stall error and continue communicating with the USB
device.

Signed-off-by: Stefan Agner <stefan@agner.ch>
2022-02-16 17:11:31 +01:00