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There is a erratum on lx2160a which is: "SATA link is
going down sometime during sata initialization"
The workaround for it is to reset the lane. This patch
implements this workaround.
This erratum only exists on lx2160 Rev1, will be addressed
on Rev2 and later.
Signed-off-by: Peng Ma <peng.ma@nxp.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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On the LX2160A, there are lots (about 160) of IOMMU messages produced
during boot; this is excessive. Reduce the severity of these messages
to debug level.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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When modifying the objects attached to a DPRC, we may end up reading
the list of objects from the firmware while another thread is changing
changing the list. Since we read the objects via:
- Read the number of DPRC objects
- Iterate over this number of objects retrieving their details
and objects can be added in the middle of the list, this causes the
last few objects to unexpectedly disappear. The side effect of this
is if network interfaces are added after boot, they come and go. This
can result in already configured interfaces unexpectedly disappearing.
This has been easy to provoke with the restool interface added, and a
script which adds network interfaces one after each other; the kernel
rescanning runs asynchronously to restool.
NXP's approach to fixing this was to introduce a sysfs "attribute" in
their vendor tree, /sys/bus/fsl-mc/rescan, which userspace poked at to
request the kernel to rescan the DPRC object tree each time the
"restool" command completed (whether or not the tool changed anything.)
This has the effect of making the kernel's rescan synchronous with a
scripted restool, but still fails if we have multiple restools running
concurrently.
This patch takes a different approach:
- Read the number of DPRC objects
- Iterate over this number of objects retrieving their details
- Re-read the number of DPRC objects
- If the number of DPRC objects has changed while reading, repeat.
This solves the issue where network interfaces unexpectedly disappear
while adding others via ls-addni, because they've fallen off the end
of the object list.
This does *not* solve the issue that if an object is deleted while
another is added while we are reading the objects - that requires
firmware modification, or a more elaborate solution on the Linux side
(e.g., CRCing the object details and reading all objects at least
twice to check the CRC is stable.)
However, without firmware modification, this is probably the best way
to ensure that we read all the objects.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Add the uapi interface for restool, picked from the QoriQ kernel tree
commit f2278d43b7ca ("bus: fsl-mc: add fsl-mc userspace support")
by Ioana Ciornei <ioana.ciornei@nxp.com>.
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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The DPAA2 MC interface supports XAUI, there is no reason not to include
it.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Phylink documentation says:
* Note that the PHY may be able to transform from one connection
* technology to another, so, eg, don't clear 1000BaseX just
* because the MAC is unable to BaseX mode. This is more about
* clearing unsupported speeds and duplex settings. The port modes
* should not be cleared; phylink_set_port_modes() will help with this.
So add the missing 10G modes.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Add support for backplane link mode, which is, according to discussions
with NXP earlier in the year, is a mode where the OS (Linux) is able to
manage the PCS and Serdes itself.
This commit prepares the ground work for allowing 1G fiber connections
to be used with DPAA2 on the SolidRun CEX7 platforms.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Now that pcs-lynx supports 1000BASE-X, add support for this interface
mode to dpaa2-mac. pcs-lynx can be switched at runtime between SGMII
and 1000BASE-X mode, so allow dpaa2-mac to switch between these as
well.
This commit prepares the ground work for allowing 1G fiber connections
to be used with DPAA2 on the SolidRun CEX7 platforms.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Add support for 1000BASE-X to pcs-lynx for the LX2160A.
This commit prepares the ground work for allowing 1G fiber connections
to be used with DPAA2 on the SolidRun CEX7 platforms.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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The implementation appears not to support pause modes on anything
but RGMII, RGMII_TXID, MII and REVMII interface modes. Let phylink
know that detail.
(This may not be correct; particularly see the FIXMEs in this patch.)
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Use the phy interface mode bitmaps for SFP modules and PHYs to select
the operating interface for SFPs and PHYs with SFPs.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Select the host interface configuration according to the capabilities
of the host; this allows the kernel to support SFP modules using the
88x3310.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Pass the supported PHY interface types to phylib so that PHY drivers
can select an appropriate host configuration mode for their interface
according to the host capabilities.
This is only done for SFP modules presently.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Display SFP module information verbosely, splitting the generic parts
into a separate file.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Add a compatible for SFP+ cages. SFP+ cages are backwards compatible,
but the ethernet device behind them may not support the slower speeds
of SFP modules.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Cooled SFP+ transceivers need a longer initialisation (startup) time.
Select the initialisation time depending on the cooled option bit.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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phy_error() is called from phy_interrupt() or phy_state_machine(), and
uses WARN_ON() to print a backtrace. The backtrace is not useful when
reporting a PHY error.
However, a system may contain multiple ethernet PHYs, and phy_error()
gives no clue which one caused the problem.
Replace WARN_ON() with a call to phydev_err() so that we can see which
PHY had an error, and also inform the user that we are halting the PHY.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Allow the PHY to probe when there is no firmware, but do not allow the
link to come up by forcing the PHY state to PHY_HALTED in a similar way
to phy_error().
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Provide phy driver start/stop hooks so that the PHY driver knows when
the network driver is starting or stopping. This will be used for the
Marvell 10G driver so that we can sanely refuse to start if the PHYs
firmware is not present, and also so that we can sanely support SFPs
behind the PHY.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Support reporting the hardware resolved pause enablement states via
phylib, overriding our software implementation.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Allow phylib drivers to pass the hardware-resolved pause state to MAC
drivers, rather than using the software-based pause resolution code.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Add support for configuring the LEDs. Macchiatobin has an oddity in
that the left LED goes out when the cable is connected, and flashes
when there's link activity. This is because the reset default for
the LED outputs assume that the LED is connected to supply, not to
ground. Add support for configuring the LED modes and polarities.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Add support for the downshift tunable for the Marvell 88x3310 PHY.
Downshift is only usable with firmware 0.3.5.0 and later.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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There are several places which open code comparing PHY IDs. Provide a
couple of helpers to assist with this, using a slightly simpler test
than the original:
- phy_id_compare() compares two arbitary PHY IDs and a mask of the
significant bits in the ID.
- phydev_id_compare() compares the bound phydev with the specified
PHY ID, using the bound driver's mask.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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The at803x driver contains a function, at803x_match_phy_id(), which
tests whether the PHY ID matches the value passed, comparing phy_id
with phydev->phy_id and testing all bits that have a "one" in the
mask, phydev->drv->phy_id_mask.
This is the same test that is used to match the driver, with phy_id
replaced with the driver specified ID, phydev->drv->phy_id.
Hence, we already know the value of the bits being tested if we look
at phydev->drv->phy_id directly, and we do not require a complicated
test to check them. Test directly against phydev->drv->phy_id instead.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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The SGMII PCS PHY needs to be updated with the link configuration in
the mac_link_up() call rather than in mac_config(). However,
mtk_sgmii_setup_mode_force() programs the SGMII block during
mac_config() when using 802.3z interface modes with the link
configuration.
Split that functionality from mtk_sgmii_setup_mode_force(), moving it
to a new mtk_sgmii_link_up() function, and call it from mac_link_up().
This does not look correct to me: 802.3z modes operate at a fixed
speed. The contents of mtk_sgmii_link_up() look more appropriate for
SGMII mode, but the original code definitely did not call
mtk_sgmii_setup_mode_force() for SGMII mode but only 802.3z mode.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Implement the .phylink_get_interfaces method for mv88e6xxx driver.
We are currently only interested in SGMII, 1000base-x and 2500base-x
modes (for the SFP code). USXGMII and 10gbase-r can be added later for
Amethyst. XAUI and RXAUI are irrelevant for SFP (but maybe not for
QSFP?).
Signed-off-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Fill in the phy interface mode bitmap for the Marvell mvpp2 driver, so
phylink can know which interfaces are supported by the MAC.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Fill in the phy interface mode bitmap for the Marvell mvneta driver, so
phylink can know which interfaces are supported by the MAC.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Where a MAC provides the PHY interface mode capabilities, use the PHY
interface mode bitmaps to select the operating interface mode for
optical SFP modules, rather than using the linkmode bitmaps.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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We currently parse the SFP EEPROM to a bitmap of ethtool link modes,
and then attempt to convert the link modes to a PHY interface mode.
While this works at present, there are cases where this is sub-optimal.
For example, where a module can operate with several different PHY
interface modes.
To start addressing this, arrange for the SFP EEPROM parsing to also
provide a bitmap of the possible PHY interface modes.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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SmartEEE for the atheros phy was deemed buggy by Freescale and commits
were added to disable it for their boards.
In initial testing, SolidRun found that the default settings were
causing disconnects but by increasing the Tw buffer time we could allow
enough time for all parts of the link to come out of a low power state
and function properly without causing a disconnect. This allows us to
have functional power savings of between 300 and 400mW, rather than
disabling the feature altogether.
This commit adds support for disabling SmartEEE and configuring the Tw
parameters for 1G and 100M speeds.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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This bit is enabled by default and advertises support for extended
next page support. XNP is only needed for 10GBase-T and MultiGig
support which is not supported. Additionally, Cisco MultiGig switches
will read this bit and attempt 10Gb negotiation even though Next Page
support is disabled. This will cause timeouts when the interface is
forced to 100Mbps and auto-negotiation will fail. The interfaces are
only 1000Base-T and supporting auto-negotiation for this only requires
the Next Page bit to be set.
Taken from:
https://github.com/SolidRun/linux-stable/commit/7406c5244b7ea6bc17a2afe8568277a8c4b126a9
and adapted to mainline kernels by rmk.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Convert at803x_clk_out_config() to use phy_modify_mmd().
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Extend the bitrate-derived support to include 2500BASE-X for modules
that report a bitrate of 2500Mbaud.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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The SFP MSA defines two option bits in byte 65 to indicate how the
Rx_LOS signal on SFP pin 8 behaves:
bit 2 - Loss of Signal implemented, signal inverted from standard
definition in SFP MSA (often called "Signal Detect").
bit 1 - Loss of Signal implemented, signal as defined in SFP MSA
(often called "Rx_LOS").
Clearly, setting both bits results in a meaningless situation: it would
mean that LOS is implemented in both the normal sense (1 = signal loss)
and inverted sense (0 = signal loss).
Unfortunately, there are modules out there which set both bits, which
will be initially interpret as "inverted" sense, and then, if the LOS
signal changes state, we will toggle between LINK_UP and WAIT_LOS
states.
Change our LOS handling to give well defined behaviour: only interpret
these bits as meaningful if exactly one is set, otherwise treat it as
if LOS is not implemented.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Add debugfs support to SFP so that the internal state of the SFP state
machines and hardware signal state can be viewed from userspace, rather
than having to compile a debug kernel to view state state transitions
in the kernel log. The 'state' output looks like:
Module state: empty
Module probe attempts: 0 0
Device state: up
Main state: down
Fault recovery remaining retries: 5
PHY probe remaining retries: 12
moddef0: 0
rx_los: 1
tx_fault: 1
tx_disable: 1
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds
Pull LED fix from Pavel Machek:
"One-liner fixing a build problem"
* 'for-rc8-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds:
leds: rt8515: add V4L2_FLASH_LED_CLASS dependency
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The leds-rt8515 driver can optionall use the v4l2 flash led class,
but it causes a link error when that class is in a loadable module
and the rt8515 driver itself is built-in:
ld.lld: error: undefined symbol: v4l2_flash_init
>>> referenced by leds-rt8515.c
>>> leds/flash/leds-rt8515.o:(rt8515_probe) in archive
drivers/built-in.a
Adding 'depends on V4L2_FLASH_LED_CLASS' in Kconfig would avoid that,
but it would make it impossible to use the driver without the
v4l2 support.
Add the same dependency that the other users of this class have
instead, which just prevents the broken configuration.
Fixes: e1c6edcbea13 ("leds: rt8515: Add Richtek RT8515 LED driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fix from Stephen Boyd:
"One small fix for the Allwinner clk driver so that display clks figure
out the correct rate to use.
This fixes displays running 4k@60Hz and some other resolutions that
haven't been exercised and fully understood until now"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: sunxi-ng: mp: fix parent rate change flag check
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fix from James Bottomley:
"One fix for scsi_debug that fixes a memory leak on module removal"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: scsi_debug: Fix a memory leak
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fix from Wolfram Sang:
"One more I2C driver bugfix"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: stm32f7: fix configuration of the digital filter
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Pull drm fixes from Dave Airlie:
"Regular fixes for final, there is a ttm regression fix, dp-mst fix,
one amdgpu revert, two i915 fixes, and some misc fixes for sun4i,
xlnx, and vc4.
All pretty quiet and don't think we have any known outstanding
regressions.
ttm:
- page pool regression fix.
dp_mst:
- don't report un-attached ports as connected
amdgpu:
- blank screen fix
i915:
- ensure Type-C FIA is powered when initializing
- fix overlay frontbuffer tracking
sun4i:
- tcon1 sync polarity fix
- always set HDMI clock rate
- fix H6 HDMI PHY config
- fix H6 max frequency
vc4:
- fix buffer overflow
xlnx:
- fix memory leak"
* tag 'drm-fixes-2021-02-12' of git://anongit.freedesktop.org/drm/drm:
drm/ttm: make sure pool pages are cleared
drm/sun4i: dw-hdmi: Fix max. frequency for H6
drm/sun4i: Fix H6 HDMI PHY configuration
drm/sun4i: dw-hdmi: always set clock rate
drm/sun4i: tcon: set sync polarity for tcon1 channel
drm/i915: Fix overlay frontbuffer tracking
Revert "drm/amd/display: Update NV1x SR latency values"
drm/i915/tgl+: Make sure TypeC FIA is powered up when initializing it
drm/dp_mst: Don't report ports connected if nothing is attached to them
drm/xlnx: fix kmemleak by sending vblank_event in atomic_disable
drm/vc4: hvs: Fix buffer overflow with the dlist handling
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fix from Juergen Gross:
"A single fix for an issue introduced this development cycle: when
running as a Xen guest on Arm systems the kernel will hang during
boot"
* tag 'for-linus-5.11-rc8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
arm/xen: Don't probe xenbus as part of an early initcall
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The digital filter related computation are present in the driver
however the programming of the filter within the IP is missing.
The maximum value for the DNF is wrong and should be 15 instead of 16.
Fixes: aeb068c57214 ("i2c: i2c-stm32f7: add driver")
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@foss.st.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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into drm-fixes
(I've pulled from a non-tag to get the ttm regression fix)
drm-misc-fixes-2021-02-10:
* dp_mst: Don't report un-attached ports as connected
* sun4i: tcon1 sync polarity fix; Always set HDMI clock rate; Fix
H6 HDMI PHY config; Fix H6 max frequency
* vc4: Fix buffer overflow
* xlnx: Fix memory leak
* ttm: page pool regression fix.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/YCPo6g3gDxD3P//h@linux-uq9g
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