When transitioning from USB_ROLE_DEVICE to USB_ROLE_NONE, the code
assumed that the regulator should be disabled. However, if the regulator
is marked as always-on, regulator_is_enabled() continues to return true,
leading to an incorrect attempt to disable a regulator which is not
enabled.
This can result in warnings such as:
[ 250.155624] WARNING: CPU: 1 PID: 7326 at drivers/regulator/core.c:3004
_regulator_disable+0xe4/0x1a0
[ 250.155652] unbalanced disables for VIN_SYS_5V0
To fix this, we move the regulator control logic into
tegra186_xusb_padctl_id_override() function since it's directly related
to the ID override state. The regulator is now only disabled when the role
transitions from USB_ROLE_HOST to USB_ROLE_NONE, by checking the VBUS_ID
register. This ensures that regulator enable/disable operations are
properly balanced and only occur when actually transitioning to/from host
mode.
Fixes: 49d46e3c7e ("phy: tegra: xusb: Add set_mode support for UTMI phy on Tegra186")
Cc: stable@vger.kernel.org
Signed-off-by: Wayne Chang <waynec@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/r/20250502092606.2275682-1-waynec@nvidia.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The logic that drives the pad calibration values resides in the
controller reset domain and so the calibration values are only being
captured when the controller is out of reset. However, by clearing the
CYA_TRK_CODE_UPDATE_ON_IDLE bit, the calibration values can be set
while the controller is in reset.
The CYA_TRK_CODE_UPDATE_ON_IDLE bit was previously cleared based on the
trk_hw_mode flag, but this dependency is not necessary. Instead,
introduce a new flag, trk_update_on_idle, to independently control this
bit.
Fixes: d8163a32ca ("phy: tegra: xusb: Add Tegra234 support")
Cc: stable@vger.kernel.org
Signed-off-by: Wayne Chang <waynec@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/r/20250519090929.3132456-2-waynec@nvidia.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
- New Support
- Qualcomm IPQ5424 qusb2 support, IPQ5018 uniphy-pcie driver
- Rockchip usb2 support for RK3562, RK3036 usb2 phy support
- Samsung exynos2200 eusb2 phy support and driver refactoring for this
support, exynos7870 USBDRD support
- Mediatek MT7988 xs-phy support
- Broadcom BCM74110 usb phy support
- Renesas RZ/V2H(P) usb2 phy support
- Updates
- Freescale phy rate claculation updates, i.MX95 tuning support
- Better error handling for amlogic pcie phy
- Rockchip color depth configuration and management support
- Yaml binding conversion for RK3399 Type-C and PCIe Phy
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Merge tag 'phy-for-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy
Pull phy updates from Vinod Koul:
"As usual featuring couple of new driver and bunch of new device
support and some driver changes to Freescale, rockchip driver along
with couple of yaml binding conversions.
New Support:
- Qualcomm IPQ5424 qusb2 support, IPQ5018 uniphy-pcie driver
- Rockchip usb2 support for RK3562, RK3036 usb2 phy support
- Samsung exynos2200 eusb2 phy support and driver refactoring for
this support, exynos7870 USBDRD support
- Mediatek MT7988 xs-phy support
- Broadcom BCM74110 usb phy support
- Renesas RZ/V2H(P) usb2 phy support
Updates:
- Freescale phy rate claculation updates, i.MX95 tuning support
- Better error handling for amlogic pcie phy
- Rockchip color depth configuration and management support
- Yaml binding conversion for RK3399 Type-C and PCIe Phy"
* tag 'phy-for-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy: (77 commits)
phy: tegra: p2u: Broaden architecture dependency
phy: rockchip: inno-usb2: Add usb2 phy support for rk3562
dt-bindings: phy: rockchip,inno-usb2phy: add rk3562
phy: rockchip: inno-usb2: add phy definition for rk3036
dt-bindings: phy: rockchip,inno-usb2phy: add rk3036 compatible
phy: freescale: fsl-samsung-hdmi: Improve LUT search for best clock
phy: freescale: fsl-samsung-hdmi: Refactor finding PHY settings
phy: freescale: fsl-samsung-hdmi: Rename phy_clk_round_rate
phy: renesas: phy-rcar-gen3-usb2: Add USB2.0 PHY support for RZ/V2H(P)
phy: renesas: phy-rcar-gen3-usb2: Sort compatible entries by SoC part number
dt-bindings: phy: renesas,usb2-phy: Document RZ/V2H(P) SoC
dt-bindings: phy: renesas,usb2-phy: Add clock constraint for RZ/G2L family
phy: exynos5-usbdrd: support Exynos USBDRD 3.2 4nm controller
phy: phy-snps-eusb2: add support for exynos2200
phy: phy-snps-eusb2: refactor reference clock init
phy: phy-snps-eusb2: make reset control optional
phy: phy-snps-eusb2: make repeater optional
phy: phy-snps-eusb2: split phy init code
phy: phy-snps-eusb2: refactor constructs names
phy: move phy-qcom-snps-eusb2 out of its vendor sub-directory
...
If device_add() fails, do not use device_unregister() for error
handling. device_unregister() consists two functions: device_del() and
put_device(). device_unregister() should only be called after
device_add() succeeded because device_del() undoes what device_add()
does if successful. Change device_unregister() to put_device() call
before returning from the function.
As comment of device_add() says, 'if device_add() succeeds, you should
call device_del() when you want to get rid of it. If device_add() has
not succeeded, use only put_device() to drop the reference count'.
Found by code review.
Cc: stable@vger.kernel.org
Fixes: 53d2a715c2 ("phy: Add Tegra XUSB pad controller support")
Signed-off-by: Ma Ke <make24@iscas.ac.cn>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20250303072739.3874987-1-make24@iscas.ac.cn
Signed-off-by: Vinod Koul <vkoul@kernel.org>
We used to take a lock in tegra186_utmi_bias_pad_power_on() but now we
have moved the lock into the caller. Unfortunately, when we moved the
lock this unlock was left behind and it results in a double unlock.
Delete it now.
Fixes: b47158fb42 ("phy: tegra: xusb: Use a bitmask for UTMI pad power state tracking")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/r/aAjmR6To4EnvRl4G@stanley.mountain
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The current implementation uses bias_pad_enable as a reference count to
manage the shared bias pad for all UTMI PHYs. However, during system
suspension with connected USB devices, multiple power-down requests for
the UTMI pad result in a mismatch in the reference count, which in turn
produces warnings such as:
[ 237.762967] WARNING: CPU: 10 PID: 1618 at tegra186_utmi_pad_power_down+0x160/0x170
[ 237.763103] Call trace:
[ 237.763104] tegra186_utmi_pad_power_down+0x160/0x170
[ 237.763107] tegra186_utmi_phy_power_off+0x10/0x30
[ 237.763110] phy_power_off+0x48/0x100
[ 237.763113] tegra_xusb_enter_elpg+0x204/0x500
[ 237.763119] tegra_xusb_suspend+0x48/0x140
[ 237.763122] platform_pm_suspend+0x2c/0xb0
[ 237.763125] dpm_run_callback.isra.0+0x20/0xa0
[ 237.763127] __device_suspend+0x118/0x330
[ 237.763129] dpm_suspend+0x10c/0x1f0
[ 237.763130] dpm_suspend_start+0x88/0xb0
[ 237.763132] suspend_devices_and_enter+0x120/0x500
[ 237.763135] pm_suspend+0x1ec/0x270
The root cause was traced back to the dynamic power-down changes
introduced in commit a30951d31b ("xhci: tegra: USB2 pad power controls"),
where the UTMI pad was being powered down without verifying its current
state. This unbalanced behavior led to discrepancies in the reference
count.
To rectify this issue, this patch replaces the single reference counter
with a bitmask, renamed to utmi_pad_enabled. Each bit in the mask
corresponds to one of the four USB2 PHYs, allowing us to track each pad's
enablement status individually.
With this change:
- The bias pad is powered on only when the mask is clear.
- Each UTMI pad is powered on or down based on its corresponding bit
in the mask, preventing redundant operations.
- The overall power state of the shared bias pad is maintained
correctly during suspend/resume cycles.
The mutex used to prevent race conditions during UTMI pad enable/disable
operations has been moved from the tegra186_utmi_bias_pad_power_on/off
functions to the parent functions tegra186_utmi_pad_power_on/down. This
change ensures that there are no race conditions when updating the bitmask.
Cc: stable@vger.kernel.org
Fixes: a30951d31b ("xhci: tegra: USB2 pad power controls")
Signed-off-by: Wayne Chang <waynec@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/r/20250408030905.990474-1-waynec@nvidia.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Observed VBUS_OVERRIDE & ID_OVERRIDE might be programmed
with unexpected value prior to XUSB PADCTL driver, this
could also occur in virtualization scenario.
For example, UEFI firmware programs ID_OVERRIDE=GROUNDED to set
a type-c port to host mode and keeps the value to kernel.
If the type-c port is connected a usb host, below errors can be
observed right after usb host mode driver gets probed. The errors
would keep until usb role class driver detects the type-c port
as device mode and notifies usb device mode driver to set both
ID_OVERRIDE and VBUS_OVERRIDE to correct value by XUSB PADCTL
driver.
[ 173.765814] usb usb3-port2: Cannot enable. Maybe the USB cable is bad?
[ 173.765837] usb usb3-port2: config error
Taking virtualization into account, asserting XUSB PADCTL
reset would break XUSB functions used by other guest OS,
hence only reset VBUS & ID OVERRIDE of the port in
utmi_phy_init.
Fixes: bbf711682c ("phy: tegra: xusb: Add Tegra186 support")
Cc: stable@vger.kernel.org
Change-Id: Ic63058d4d49b4a1f8f9ab313196e20ad131cc591
Signed-off-by: BH Hsieh <bhsieh@nvidia.com>
Signed-off-by: Henry Lin <henryl@nvidia.com>
Link: https://lore.kernel.org/r/20250122105943.8057-1-henryl@nvidia.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Commit de60266825 ("phy: tegra: Add PCIe PIPE2UPHY support for Tegra234")
add support for Tegra234 to the tegra194-p2u PHY driver. But the driver is
currently not selectable when Tegra234 SoC support is enabled.
Update the Kconfig entry to allow the driver to be built when support the
Tegra234 SoC is enabled.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20241201002519.3468-1-lars@metafoo.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Here is a small set of driver core changes for 6.13-rc1.
Nothing major for this merge cycle, except for the 2 simple merge
conflicts are here just to make life interesting.
Included in here are:
- sysfs core changes and preparations for more sysfs api cleanups that
can come through all driver trees after -rc1 is out
- fw_devlink fixes based on many reports and debugging sessions
- list_for_each_reverse() removal, no one was using it!
- last-minute seq_printf() format string bug found and fixed in many
drivers all at once.
- minor bugfixes and changes full details in the shortlog
As mentioned above, there is 2 merge conflicts with your tree, one is
where the file is removed (easy enough to resolve), the second is a
build time error, that has been found in linux-next and the fix can be
seen here:
https://lore.kernel.org/r/20241107212645.41252436@canb.auug.org.au
Other than that, the changes here have been in linux-next with no other
reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is a small set of driver core changes for 6.13-rc1.
Nothing major for this merge cycle, except for the two simple merge
conflicts are here just to make life interesting.
Included in here are:
- sysfs core changes and preparations for more sysfs api cleanups
that can come through all driver trees after -rc1 is out
- fw_devlink fixes based on many reports and debugging sessions
- list_for_each_reverse() removal, no one was using it!
- last-minute seq_printf() format string bug found and fixed in many
drivers all at once.
- minor bugfixes and changes full details in the shortlog"
* tag 'driver-core-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (35 commits)
Fix a potential abuse of seq_printf() format string in drivers
cpu: Remove spurious NULL in attribute_group definition
s390/con3215: Remove spurious NULL in attribute_group definition
perf: arm-ni: Remove spurious NULL in attribute_group definition
driver core: Constify bin_attribute definitions
sysfs: attribute_group: allow registration of const bin_attribute
firmware_loader: Fix possible resource leak in fw_log_firmware_info()
drivers: core: fw_devlink: Fix excess parameter description in docstring
driver core: class: Correct WARN() message in APIs class_(for_each|find)_device()
cacheinfo: Use of_property_present() for non-boolean properties
cdx: Fix cdx_mmap_resource() after constifying attr in ->mmap()
drivers: core: fw_devlink: Make the error message a bit more useful
phy: tegra: xusb: Set fwnode for xusb port devices
drm: display: Set fwnode for aux bus devices
driver core: fw_devlink: Stop trying to optimize cycle detection logic
driver core: Constify attribute arguments of binary attributes
sysfs: bin_attribute: add const read/write callback variants
sysfs: implement all BIN_ATTR_* macros in terms of __BIN_ATTR()
sysfs: treewide: constify attribute callback of bin_attribute::llseek()
sysfs: treewide: constify attribute callback of bin_attribute::mmap()
...
- New Support
- ST STM32MP25 combophy support
- Sparx5 support for lan969x serdes and updates to driver to support this
- NXP PTN3222 eUSB2 to USB2 redriver
- Qualcomm SAR2130P eusb2 support, QCS8300 USB DW3 and QMP USB2 support,
X1E80100 QMP PCIe PHY Gen4 support, QCS615 and QCS8300 QMP UFS PHY
support and SA8775P eDP PHY support
- Rockchip rk3576 usbdp and rk3576 usb2 phy support
- Binding for Microchip ATA6561 can phy
- Updates
- Freescale driver updates from hdmi support
- Conversion of rockchip rk3228 hdmi phy binding to yaml
- Broadcom usb2-phy deprecated support dropped and USB init array update
for BCM4908
- TI USXGMII mode support in J7200
- Switch back to platform_driver::remove() subsystem update
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Merge tag 'phy-for-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy
Pull phy updates from Vinod Koul:
"New hardware support:
- ST STM32MP25 combophy support
- Sparx5 support for lan969x serdes and updates to driver to support
this
- NXP PTN3222 eUSB2 to USB2 redriver
- Qualcomm SAR2130P eusb2 support, QCS8300 USB DW3 and QMP USB2
support, X1E80100 QMP PCIe PHY Gen4 support, QCS615 and QCS8300 QMP
UFS PHY support and SA8775P eDP PHY support
- Rockchip rk3576 usbdp and rk3576 usb2 phy support
- Binding for Microchip ATA6561 can phy
Updates:
- Freescale driver updates from hdmi support
- Conversion of rockchip rk3228 hdmi phy binding to yaml
- Broadcom usb2-phy deprecated support dropped and USB init array
update for BCM4908
- TI USXGMII mode support in J7200
- Switch back to platform_driver::remove() subsystem update"
* tag 'phy-for-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy: (59 commits)
phy: qcom: qmp: Fix lecacy-legacy typo
phy: lan969x-serdes: add support for lan969x serdes driver
dt-bindings: phy: sparx5: document lan969x
phy: sparx5-serdes: add support for branching on chip type
phy: sparx5-serdes: add indirection layer to register macros
phy: sparx5-serdes: add function for getting the CMU index
phy: sparx5-serdes: add ops to match data
phy: sparx5-serdes: add constant for the number of CMU's
phy: sparx5-serdes: add constants to match data
phy: sparx5-serdes: add support for private match data
phy: bcm-ns-usb2: drop support for old binding variant
dt-bindings: phy: bcm-ns-usb2-phy: drop deprecated variant
dt-bindings: phy: Add QMP UFS PHY compatible for QCS8300
dt-bindings: phy: qcom: snps-eusb2: Add SAR2130P compatible
dt-bindings: phy: ti,tcan104x-can: Document Microchip ATA6561
phy: airoha: Fix REG_CSR_2L_RX{0,1}_REV0 definitions
phy: airoha: Fix REG_CSR_2L_JCPLL_SDM_HREN config in airoha_pcie_phy_init_ssc_jcpll()
phy: airoha: Fix REG_PCIE_PMA_TX_RESET config in airoha_pcie_phy_init_csr_2l()
phy: airoha: Fix REG_CSR_2L_PLL_CMN_RESERVE0 config in airoha_pcie_phy_init_clk_out()
phy: phy-rockchip-samsung-hdptx: Don't request RST_PHY/RST_ROPLL/RST_LCPLL
...
fwnode needs to be set for a device for fw_devlink to be able to
track/enforce its dependencies correctly. Without this, you'll see error
messages like this when the supplier has probed and tries to make sure
all its fwnode consumers are linked to it using device links:
tegra-xusb-padctl 3520000.padctl: Failed to create device link (0x180) with 1-0008
Reported-by: Jon Hunter <jonathanh@nvidia.com>
Closes: https://lore.kernel.org/all/20240910130019.35081-1-jonathanh@nvidia.com/
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Suggested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: Saravana Kannan <saravanak@google.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20241024061347.1771063-3-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
After commit 0edb555a65 ("platform: Make platform_driver::remove()
return void") .remove() is (again) the right callback to implement for
platform drivers.
Convert all platform drivers below drivers/phy/ to use .remove(), with
the eventual goal to drop struct platform_driver::remove_new(). As
.remove() and .remove_new() have the same prototypes, conversion is done
by just changing the structure member name in the driver initializer.
While touching these files, make indention of the struct initializer
consistent in several files.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/20241009065307.504930-2-u.kleine-koenig@baylibre.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Here is the big set of USB and Thunderbolt changes for 6.9-rc1. Lots of
tiny changes and forward progress to support new hardware and better
support for existing devices. Included in here are:
- Thunderbolt (i.e. USB4) updates for newer hardware and uses as more
people start to use the hardware
- default USB authentication mode Kconfig and documentation update to
make it more obvious what is going on
- USB typec updates and enhancements
- usual dwc3 driver updates
- usual xhci driver updates
- function USB (i.e. gadget) driver updates and additions
- new device ids for lots of drivers
- loads of other small updates, full details in the shortlog
All of these, including a "last minute regression fix" have been in
linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt updates from Greg KH:
"Here is the big set of USB and Thunderbolt changes for 6.9-rc1. Lots
of tiny changes and forward progress to support new hardware and
better support for existing devices. Included in here are:
- Thunderbolt (i.e. USB4) updates for newer hardware and uses as more
people start to use the hardware
- default USB authentication mode Kconfig and documentation update to
make it more obvious what is going on
- USB typec updates and enhancements
- usual dwc3 driver updates
- usual xhci driver updates
- function USB (i.e. gadget) driver updates and additions
- new device ids for lots of drivers
- loads of other small updates, full details in the shortlog
All of these, including a "last minute regression fix" have been in
linux-next with no reported issues"
* tag 'usb-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (185 commits)
usb: usb-acpi: Fix oops due to freeing uninitialized pld pointer
usb: gadget: net2272: Use irqflags in the call to net2272_probe_fin
usb: gadget: tegra-xudc: Fix USB3 PHY retrieval logic
phy: tegra: xusb: Add API to retrieve the port number of phy
USB: gadget: pxa27x_udc: Remove unused of_gpio.h
usb: gadget/snps_udc_plat: Remove unused of_gpio.h
usb: ohci-pxa27x: Remove unused of_gpio.h
usb: sl811-hcd: only defined function checkdone if QUIRK2 is defined
usb: Clarify expected behavior of dev_bin_attrs_are_visible()
xhci: Allow RPM on the USB controller (1022:43f7) by default
usb: isp1760: remove SLAB_MEM_SPREAD flag usage
usb: misc: onboard_hub: use pointer consistently in the probe function
usb: gadget: fsl: Increase size of name buffer for endpoints
usb: gadget: fsl: Add of device table to enable module autoloading
usb: typec: tcpm: add support to set tcpc connector orientatition
usb: typec: tcpci: add generic tcpci fallback compatible
dt-bindings: usb: typec-tcpci: add tcpci fallback binding
usb: gadget: fsl-udc: Replace custom log wrappers by dev_{err,warn,dbg,vdbg}
usb: core: Set connect_type of ports based on DT node
dt-bindings: usb: Add downstream facing ports to realtek binding
...
This patch introduces a new API, tegra_xusb_padctl_get_port_number,
to the Tegra XUSB Pad Controller driver. This API is used to identify
the USB port that is associated with a given PHY.
The function takes a PHY pointer for either a USB2 PHY or USB3 PHY as input
and returns the corresponding port number. If the PHY pointer is invalid,
it returns -ENODEV.
Cc: stable@vger.kernel.org
Signed-off-by: Wayne Chang <waynec@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/r/20240307030328.1487748-2-waynec@nvidia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The xlate callbacks are supposed to translate of_phandle_args to proper
provider without modifying the of_phandle_args. Make the argument
pointer to const for code safety and readability.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Thierry Reding <treding@nvidia.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Florian Fainelli <florian.fainelli@broadcom.com> #Broadcom
Link: https://lore.kernel.org/r/20240217093937.58234-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it as merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> # for drivers/phy/phy-can-transceiver.c
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Link: https://lore.kernel.org/r/20230714174841.4061919-1-robh@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
For the dual-role port, it will assign the phy dev to usb-phy dev and
use the port dev driver as the dev driver of usb-phy.
When we try to destroy the port dev, it will destroy its dev driver
as well. But we did not remove the reference from usb-phy dev. This
might cause the use-after-free issue in KASAN.
Fixes: e8f7d2f409 ("phy: tegra: xusb: Add usb-phy support")
Cc: stable@vger.kernel.org
Signed-off-by: EJ Hsu <ejh@nvidia.com>
Signed-off-by: Haotien Hsu <haotienh@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/r/20230609062932.3276509-1-haotienh@nvidia.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The tegra_xusb_port_unregister should be called when usb2_port
and ulpi_port map fails in tegra_xusb_add_usb2_port() or in
tegra_xusb_add_ulpi_port(), fix it.
Fixes: 53d2a715c2 ("phy: Add Tegra XUSB pad controller support")
Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20221129111634.1547747-1-cuigaosheng1@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Add new registers programming in sleepwalk sequence for Tegra234:
MASTER_ENABLE_A/B/C/D in XUSB_AO_UTMIP_SLEEPWALK.
Signed-off-by: Henry Lin <henryl@nvidia.com>
Signed-off-by: Haotien Hsu <haotienh@nvidia.com>
Link: https://lore.kernel.org/r/20230309061708.4156383-1-haotienh@nvidia.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is (mostly) ignored
and this typically results in resource leaks. To improve here there is a
quest to make the remove callback return void. In the first step of this
quest all drivers are converted to .remove_new() which already returns
void.
Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230307115900.2293120-25-u.kleine-koenig@pengutronix.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Add support for the XUSB pad controller found on Tegra234 SoCs. It is
mostly similar to the same IP found on Tegra194, because most of
the Tegra234 XUSB PADCTL registers definition and programming sequence
are the same as Tegra194, Tegra234 XUSB PADCTL can share the same
driver with Tegra186 and Tegra194 XUSB PADCTL.
Introduce a new feature, USB2 HW tracking, for Tegra234.
The feature is to enable HW periodical PAD tracking which measure
and capture the electric parameters of USB2.0 PAD.
Signed-off-by: Sing-Han Chen <singhanc@nvidia.com>
Co-developed-by: Wayne Chang <waynec@nvidia.com>
Signed-off-by: Wayne Chang <waynec@nvidia.com>
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/r/20230111110450.24617-6-jonathanh@nvidia.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Pad tracking is a one-time calibration for Tegra186 and Tegra194.
Clk should be disabled after calibration.
Disable clk after calibration.
While at it add 100us delay for HW recording the calibration value.
Signed-off-by: Wayne Chang <waynec@nvidia.com>
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/r/20230111110450.24617-5-jonathanh@nvidia.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Remove redundant codes for getting the vbus supply of usb3 ports because
we get and control the vbus supply by the companion usb2 ports
Signed-off-by: Wayne Chang <waynec@nvidia.com>
Signed-off-by: Haotien Hsu <haotienh@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/r/20221005084031.2154251-1-haotienh@nvidia.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Set ENABLE_L2_EXIT_RATE_CHANGE register bit to request UPHY PLL rate change
to Gen1 during initialization. This helps in the below surprise link down
cases,
- Surprise link down happens at Gen3/Gen4 link speed.
- Surprise link down happens and external REFCLK is cut off, which causes
UPHY PLL rate to deviate to an invalid rate.
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Link: https://lore.kernel.org/r/20221013183854.21087-9-vidyas@nvidia.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Commit a88520bfc0 ("usb: gadget: tegra: Reduce pad power") added calls
to tegra_phy_xusb_utmi_pad_power_on/down in the Tegra XUDC driver to
control the pad power. This change is causing a kernel panic when
powering down the pads on entering suspend with the Jetson TX2 platform.
The panic occurs because the 'xudc->curr_utmi_phy' is not configured on
this platform and we do not check to see if the pointer is valid before
attempting to deference the pointer. Fix this by checking to see if the
'phy' pointer passed to tegra_phy_xusb_utmi_pad_power_on/down is valid.
Fixes: a88520bfc0 ("usb: gadget: tegra: Reduce pad power")
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/r/20221010135132.30809-1-jonathanh@nvidia.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Here is the big set of USB and Thunderbolt driver changes for 6.1-rc1.
Nothing major in here, lots of little things with new devices supported
and updates for a few drivers. Highlights include:
- thunderbolt/USB4 devices supported a bit better than before,
and some new ids to enable new hardware devices
- USB gadget uvc updates for newer video formats and better v4l
integration (the v4l portions were acked by those maintainers)
- typec updates for tiny issues and more typec drivers for new
chips.
- xhci tiny updates for minor issues
- big usb-serial ftdi_sio driver update to handle new devices
better
- lots of tiny dwc3 fixes and updates for the IP block that is
showing up everywhere these days
- dts updates for new devices being supported
- other tiny janitorial and cleanups fixes for lots of different
USB drivers. Full details are in the shortlog.
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt updates from Greg KH:
"Here is the big set of USB and Thunderbolt driver changes for 6.1-rc1.
Nothing major in here, lots of little things with new devices
supported and updates for a few drivers. Highlights include:
- thunderbolt/USB4 devices supported a bit better than before, and
some new ids to enable new hardware devices
- USB gadget uvc updates for newer video formats and better v4l
integration (the v4l portions were acked by those maintainers)
- typec updates for tiny issues and more typec drivers for new chips.
- xhci tiny updates for minor issues
- big usb-serial ftdi_sio driver update to handle new devices better
- lots of tiny dwc3 fixes and updates for the IP block that is
showing up everywhere these days
- dts updates for new devices being supported
- other tiny janitorial and cleanups fixes for lots of different USB
drivers. Full details are in the shortlog.
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (169 commits)
usb: gadget: uvc: don't put item still in use
usb: gadget: uvc: Fix argument to sizeof() in uvc_register_video()
usb: host: ehci-exynos: switch to using gpiod API
Revert "usb: dwc3: Don't switch OTG -> peripheral if extcon is present"
Revert "USB: fixup for merge issue with "usb: dwc3: Don't switch OTG -> peripheral if extcon is present""
dt-bindings: usb: Convert FOTG210 to dt schema
usb: mtu3: fix failed runtime suspend in host only mode
USB: omap_udc: Fix spelling mistake: "tranceiver_ctrl" -> "transceiver_ctrl"
usb: typec: ucsi_ccg: Disable UCSI ALT support on Tegra
usb: typec: Replace custom implementation of device_match_fwnode()
usb: typec: ucsi: Don't warn on probe deferral
usb: add quirks for Lenovo OneLink+ Dock
MAINTAINERS: switch dwc3 to Thinh
usb: idmouse: fix an uninit-value in idmouse_open
USB: PHY: JZ4770: Switch to use dev_err_probe() helper
usb: phy: generic: Switch to use dev_err_probe() helper
usb: ulpi: use DEFINE_SHOW_ATTRIBUTE to simplify ulpi_regs
usb: cdns3: remove dead code
usb: cdc-wdm: Use skb_put_data() instead of skb_put/memcpy pair
usb: musb: sunxi: Switch to use dev_err_probe() helper
...
This patch enables the usb-role-switch attribute and lets users check
the current device role of the otg capability ports
Signed-off-by: Wayne Chang <waynec@nvidia.com>
Signed-off-by: Haotien Hsu <haotienh@nvidia.com>
Link: https://lore.kernel.org/r/20220928125640.2219402-1-haotienh@nvidia.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
In the probe path, dev_err() can be replaced with dev_err_probe()
which will check if error code is -EPROBE_DEFER and prints the
error name. It also sets the defer probe reason which can be
checked later through debugfs.
Signed-off-by: Yuan Can <yuancan@huawei.com>
Link: https://lore.kernel.org/r/20220922092243.22281-1-yuancan@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The single difference between returning 0 and returning an error code in
a platform remove callback is that in the latter case the platform core
emits a warning about the error being ignored.
If reset_control_assert() fails there is already a warning, so suppress
the more generic (and less helpful) by returning 0 in
tegra_xusb_padctl_remove().
This is a preparation for making platform remove callbacks return void.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20220716145403.107703-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Add utmi_pad_power_on/down ops for each SOC instead of exporting
tegra_phy_xusb_utmi_pad_power_on/down directly for Tegra186 chip.
Signed-off-by: BH Hsieh <bhsieh@nvidia.com>
Signed-off-by: Jim Lin <jilin@nvidia.com>
Link: https://lore.kernel.org/r/20220816082353.13390-2-jilin@nvidia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Synopsys DesignWare core based PCIe controllers in Tegra234 SoC
interface with Universal PHY (UPHY) module through a PIPE2UPHY (P2U)
module. For each PCIe lane of a controller, there is a P2U unit
instantiated at hardware level. This driver provides support for the
programming required for each P2U that is going to be used for a PCIe
controller.
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Link: https://lore.kernel.org/r/20220629060435.25297-9-vidyas@nvidia.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
callers of tegra_xusb_find_port_node() function only do NULL checking for
the return value. return NULL instead of ERR_PTR(-ENOMEM) to keep
consistent.
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20211213020507.1458-1-linmq006@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
When these are not referenced, gcc prints a harmless warning:
drivers/phy/tegra/xusb.c:1286:12: error: 'tegra_xusb_padctl_resume_noirq' defined but not used [-Werror=unused-function]
1286 | static int tegra_xusb_padctl_resume_noirq(struct device *dev)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/phy/tegra/xusb.c:1276:12: error: 'tegra_xusb_padctl_suspend_noirq' defined but not used [-Werror=unused-function]
1276 | static int tegra_xusb_padctl_suspend_noirq(struct device *dev)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Fixes: c545a90567 ("phy: tegra: xusb: Add sleepwalk and suspend/resume")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20210721152550.2976003-1-arnd@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
To support XUSB host controller ELPG, this commit moves VBUS control
.phy_power_on()/.phy_power_off() to .phy_init()/.phy_exit().
When XUSB host controller enters ELPG, host driver invokes
.phy_power_off(), VBUS should remain ON so that USB devices will not
disconnect. VBUS can be turned OFF when host driver invokes
.phy_exit() which indicates disabling a USB port.
Signed-off-by: JC Kuo <jckuo@nvidia.com>
Acked-By: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit implements Tegra210 XUSB PADCTL wake and sleepwalk
routines. Sleepwalk logic is in PMC (always-on) hardware block.
PMC driver provides managed access to the sleepwalk registers
via regmap framework.
Signed-off-by: JC Kuo <jckuo@nvidia.com>
Acked-By: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit adds sleepwalk/wake and suspend/resume interfaces
to Tegra XUSB PHY driver.
Tegra XUSB host controller driver makes use of sleepwalk functions
to enable/disable sleepwalk circuit which is in always-on partition
and can respond to USB resume signals when controller is not powered.
Sleepwalk can be enabled/disabled for any USB UPHY individually.
- tegra_xusb_padctl_enable_phy_sleepwalk()
- tegra_xusb_padctl_disable_phy_sleepwalk()
Tegra XUSB host controller driver makes use of wake functions to
enable/disable/query wake circuit which is in always-on partition
can wake system up when USB resume happens.
Wake circuit can be enabled/disabled for any USB PHY individually.
- tegra_xusb_padctl_enable_phy_wake()
- tegra_xusb_padctl_disable_phy_wake()
- tegra_xusb_padctl_remote_wake_detected()
This commit also adds two system suspend stubs that can be used to
save and restore XUSB PADCTL context during system suspend and
resume.
- tegra_xusb_padctl_suspend_noirq()
- tegra_xusb_padctl_resume_noirq()
Signed-off-by: JC Kuo <jckuo@nvidia.com>
Acked-By: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
As per Tegra210 TRM, before changing lane assignments, driver should
keep lanes in IDDQ and sleep state; after changing lane assignments,
driver should bring lanes out of IDDQ.
This commit implements the required operations.
Signed-off-by: JC Kuo <jckuo@nvidia.com>
Acked-By: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is a preparation for enabling XUSB SC7 support.
It rearranges Tegra210 XUSB PADCTL UPHY initialization sequence,
for the following reasons:
1. PLLE hardware power sequencer has to be enabled only after both
PEX UPHY PLL and SATA UPHY PLL are initialized.
tegra210_uphy_init() -> tegra210_pex_uphy_enable()
-> tegra210_sata_uphy_enable()
-> tegra210_plle_hw_sequence_start()
-> tegra210_aux_mux_lp0_clamp_disable()
2. At cold boot and SC7 exit, the following bits must be cleared after
PEX/SATA lanes are out of IDDQ (IDDQ_DISABLE=1).
a. XUSB_PADCTL_ELPG_PROGRAM1_AUX_MUX_LP0_CLAMP_EN,
b. XUSB_PADCTL_ELPG_PROGRAM1_AUX_MUX_LP0_CLAMP_EN_EARLY
c. XUSB_PADCTL_ELPG_PROGRAM1_AUX_MUX_LP0_VCORE_DOWN
tegra210_pex_uphy_enable() and tegra210_sata_uphy_enable() are in
charge of bringing lanes out of IDDQ, and then AUX_MUX_LP0_* bits
will be cleared by tegra210_aux_mux_lp0_clamp_disable().
3. Once UPHY PLL hardware power sequencer is enabled, do not assert
reset to PEX/SATA PLLs, otherwise UPHY PLL operation will be broken.
Signed-off-by: JC Kuo <jckuo@nvidia.com>
Acked-By: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
The programming sequence in tegra210_usb3_port_enable() is required
for both cold boot and SC7 exit, and must be performed only after
PEX/SATA UPHY is initialized. Therefore, this commit moves the
programming sequence to tegra210_usb3_phy_power_on(). PCIE/SATA phy
.power_on() stub will invoke tegra210_usb3_phy_power_on() if the lane
is assigned for XUSB super-speed.
Signed-off-by: JC Kuo <jckuo@nvidia.com>
Acked-By: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
- New phy drivers:
- Mediatek MT7621 PCIe PHY (promoted from staging)
- Ingenic USB phy driver supporting JZ4775 and X2000
- Intel Keem Bay USB PHY driver
- Marvell USB HSIC PHY driver supporting MMP3 SoC
- AXG MIPI D-PHY driver
- Updates:
- Conversion to YAML binding for:
- Broadcom SATA PHY
- Cadence Sierra PHY bindings
- STM32 USBC Phy
- Support for Exynos5433 PCIe PHY
- Support for Qualcomm SM8250 PCIe QMP PHY
- Support for Exynos5420 USB2 phy
- devm_platform_ioremap_resource conversion for bunch of drivers
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Merge tag 'phy-for-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy into char-misc-next
Vinod writes:
phy-for-5.11
- New phy drivers:
- Mediatek MT7621 PCIe PHY (promoted from staging)
- Ingenic USB phy driver supporting JZ4775 and X2000
- Intel Keem Bay USB PHY driver
- Marvell USB HSIC PHY driver supporting MMP3 SoC
- AXG MIPI D-PHY driver
- Updates:
- Conversion to YAML binding for:
- Broadcom SATA PHY
- Cadence Sierra PHY bindings
- STM32 USBC Phy
- Support for Exynos5433 PCIe PHY
- Support for Qualcomm SM8250 PCIe QMP PHY
- Support for Exynos5420 USB2 phy
- devm_platform_ioremap_resource conversion for bunch of drivers
* tag 'phy-for-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy: (72 commits)
drm/mediatek: avoid dereferencing a null hdmi_phy on an error message
phy: ingenic: depend on HAS_IOMEM
phy: mediatek: statify mtk_hdmi_phy_driver
dt-bindings: phy: Convert Broadcom SATA PHY to YAML
devicetree: phy: rockchip-emmc add output-tapdelay-select
phy: rockchip-emmc: output tap delay dt property
PHY: Ingenic: Add USB PHY driver using generic PHY framework.
dt-bindings: USB: Add bindings for Ingenic JZ4775 and X2000.
USB: PHY: JZ4770: Remove unnecessary function calls.
devicetree: phy: rockchip-emmc: pulldown property
phy: rockchip: set pulldown for strobe line in dts
phy: renesas: rcar-gen3-usb2: disable runtime pm in case of failure
phy: mediatek: allow compile-testing the hdmi phy
phy/rockchip: Make PHY_ROCKCHIP_INNO_HDMI depend on HAS_IOMEM to fix build error
phy: samsung: Merge Kconfig for Exynos5420 and Exynos5250
phy: ralink: phy-mt7621-pci: set correct name in MODULE_DEVICE_TABLE macro
phy: ralink: phy-mt7621-pci: drop 'COMPILE_TEST' from Kconfig
phy: mediatek: Make PHY_MTK_{XSPHY, TPHY} depend on HAS_IOMEM and OF_ADDRESS to fix build errors
phy: tegra: xusb: Fix usb_phy device driver field
phy: amlogic: replace devm_reset_control_array_get()
...
Deferred probe is an expected return value for devm_regulator_bulk_get().
Given that the driver deals with it properly, there's no need to output a
warning that may potentially confuse users.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Acked-by: JC Kuo <jckuo@nvidia.com>
Link: https://lore.kernel.org/r/20201111103708.152566-1-jonathanh@nvidia.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
