meson64: sleep and wake on ODROID-HC4 - PCIe, Wake-on-Lan and the RTC alarm by iav · Pull Request #10740 · armbian/build

iav · 2026-09-17T00:33:44Z

The board is meant to sleep in s2idle and wake either on its RTC alarm or on a
magic packet, with the disks and the network working afterwards. Seven patches;
each one alone looks like an unrelated fix, together they make that work.

PCIe: survive the sleep (patches 1-3, `pci-meson.c`, all four branches)

Unchanged from the previous revision of this PR: PM callbacks for a controller
that genpd powers off, a resume that retrains the link while the data link
layer stays down, and a poll that rebuilds the root complex after a link down
reset takes the disks away.

Wake-on-Lan reaches the PHY (patch 4, `phylink.c`, 7.2 and 7.3)

A board configured for WoL the usual way - nmcli, which netplan turns into a
.link file - never wakes on a magic packet. udev applies WakeOnLan= as soon
as the interface appears, and stmmac attaches the PHY only when the interface
is opened, so phylink has no PHY to offer the request to and keeps it at the
MAC. The MAC on SM1 has no wake line of its own ("IRQ eth_wake_irq not found"),
and a later ethtool call is a no-op because the state already reads as "g".

Offer the stored MAC options to the PHY as it attaches and keep at the MAC only
what the PHY does not take, as phylink_ethtool_set_wol() does. The series that
put WoL under phylink (b79fbd86c849, v6.19) left the initial state unhandled.

The MAC interrupt stays shut across a sleep (patch 5, `stmmac_main.c`, 7.2 and 7.3)

Resume resets the MAC in stmmac_hw_setup(), and the interrupt mask reads zero
until dwmac1000_core_init() writes it again. Device interrupts are live from
the noirq phase, so a link change in that window raises the RGMII interrupt,
which the handler no longer clears - 2e2c878a3141 relies on it staying masked.
dwmac_dma_interrupt() then prints "unexpected status 04000000" until the board
is power cycled. Shut the interrupt in suspend, open it at the end of resume,
as owl-emac does; a MAC that wakes the system through that line keeps it.

RTC alarm interrupt (patch 6, board DTS, all four branches)

The PCF8563 node is marked as a wakeup source but has no interrupt, so its alarm
reaches nothing. The INT line sits on GPIOX_5.

Tested on ODROID-HC4 with two SATA disks

Kernel built from these patches only, no overlays on the board:

woken from s2idle by a magic packet 3/3 and by the RTC alarm 2/2;
both disks present after every resume, no interrupt storms;
earlier kernels carrying the same code plus debug prints: nine more sleep
cycles, no storms;
builds on all four branches (6.12, 6.18, 7.2, 7.3).

Not covered

6.12 and 6.18 have no phylink-managed WoL, so a magic packet does not wake
those kernels;
patch 5 touches stmmac for every board, and only HC4 was tested;
deep sleep needs BL301 changes; this is s2idle only;
a warm reboot leaves the SD card in UHS mode, and neither U-Boot nor the
boot ROM reads it afterwards (CMD18 fails), so the board stops in the
bootloader until it is power cycled. Not caused by these patches - it
reproduces with the SPI erased - but a tester meets it first: use poweroff
and a power cycle.

Summary by CodeRabbit

New Features
- ODROID-HC4 RTC alarms can now wake the system.
- Meson PCIe devices support more reliable suspend/resume, link retraining, and automatic recovery when connections drop.
- Wake-on-LAN settings are preserved when transitioning between the network controller and PHY.
Bug Fixes
- Network interrupts are managed safely across suspend and resume.
- Improved reliability for ASMedia ASM1061 SATA controller links after system resume.

Added 21 Sep: testing shutdown on the bench turned up a defect in this very series. The link watchdog from pm-3 is not stopped on shutdown - the driver has no .shutdown - so the poll outlives the point where shutdown has taken the controller's power and clocks away, and faults reading the link registers:

Internal error: synchronous external abort: 0000000096000010
Workqueue: events meson_pcie_link_watch
pc : meson_pcie_link_up+0x18/0x50

The dying kworker then keeps RCU from finishing a grace period, and a board that reached reboot: Power down prints stalls instead of powering off. The bench log has four such faults.

pm-4 adds the .shutdown and changes how the poll is stopped: it requeues itself at the end of every run, so cancel_delayed_work_sync() is not enough on its own - catching the work while it runs, it waits for that run to finish, and the tail of that same run puts the work back. It uses disable_delayed_work_sync(), which refuses the requeue, with a matching enable_delayed_work() on resume. The suspend path gets the same treatment, where the cancel had the same hole.

Tested on ODROID-HC4: three shutdowns in a row, three reboot: Power down, no oops.

Review on the staging PR then caught two more holes of the same kind, both fixed here: the watchdog was still cancelled rather than disabled on the removal path, where the work outlives dw_pcie_host_deinit() and the devm teardown; and stmmac_resume() handed the MAC interrupt back only at the end of its successful path, while three earlier returns walked past it, leaving the disable depth one deeper each cycle.

For what it is worth, the same shape shows up elsewhere - as of 21 Sep 2026, on 7.2.6: owl-emac returns from resume past its enable_irq on error (owl-emac.c:1402-1425), and fec skips enable_irq(fep->wake_irq) when fec_enet_clk_enable() fails with WoL enabled (fec_main.c:5580-5609). Not touching them here, just noting it.

Added 22 Sep: three fixes from the review rounds, and a bench run of all of them.

Patch 4 (phylink). The wolopts_phy field is gone. It was filled only when a PHY attached and phylink_ethtool_set_wol() never refreshed it, so a mode the user had switched off with ethtool came back to the MAC when the PHY detached. phylink_disconnect_phy() now asks the PHY itself with phy_ethtool_get_wol() before phy_disconnect(). The hand-off at attach is narrowed too: the PHY is offered only what it reports as supported, since a single unknown mode makes it refuse the whole request and everything would stay on the MAC.

Patch 5 (stmmac). The disable is out of stmmac_suspend(). The line is requested with IRQF_SHARED, and kept closed for the whole sleep it would silence a co-owner that can wake the system. It is now closed at the start of stmmac_resume() and reopened on the common exit, so the window is the hardware setup only - and a MAC that owns the wake source itself is no longer an exception.

Tested on ODROID-HC4 with two SATA disks, 7.2.7, branch rebased onto current main:

warm reboot 1/1, the board back in 45 s;
ethtool -s end0 wol g then ip link set end0 down: the MAC takes the mode over (power/wakeup reads enabled), and hands it back to the PHY on up;
wol d then down: the MAC takes nothing, the mode does not come back;
three s2idle cycles woken by a magic packet: back in 10, 10 and 15 s, both disks present after each, no PCIe link rebuilds, no interrupt storms.

Added 22 Sep, later.

Patch 4 (phylink), one more review fix: a SecureOn mode the PHY holds and the MAC cannot carries the PHY's own password along, from the same phy_ethtool_get_wol() query.

Patch 7 (ASM1061 and ASPM, quirks.c, 6.18, 7.2 and 7.3). Since v6.18 the kernel enables L0s and L1 on devicetree platforms by default (f3ac2ff14834, narrowed in df5192d9bb0e); before that nothing turned ASPM on for the HC4's SATA bridge. After s2idle resume its link then died in L1 while the disk spun up - 6 of 21 cycles, each one rebuilt by the watchdog. The patch disables L0s and L1 on 1b21:0611 the way mainline does for the ASM1083 (b361663c5a40) and the 6.18 regressions (921b3f59b7b0), and the way storage drivers do for their own controllers: hpsa (e5a44df85e8d), aacraid (cf16123c9c8e), mpt3sas (ffdadd68af5a). 6.12 does not enable ASPM on devicetree platforms and needs no change.

Tested on ODROID-HC4, 7.2.7, ASPM policy default: lspci reads ASPM Disabled on both ends; 15 s2idle cycles woken by a magic packet - no link down, both disks present after each.

Added 22 Sep, evening. Patch 5 carried an imbalance CodeRabbit and Codex both flagged: stmmac_resume() decided on netif_running() whether to shut the line, and decided again, later, whether to hand it back. A local irq_off now carries that single decision to the matching enable, and the !netif_running return goes through out with ret = 0.

Bench results, 22 Sep (ODROID-HC4, 7.2.7 P1367: this series plus that fix):

Sleep: six s2idle cycles. Five woken by a magic packet - the PHY interrupt, five seconds from the packet to PM: suspend exit; one with end0 administratively down, woken by the RTC alarm. Both disks back after every cycle, no Unbalanced enable for IRQ, no link rebuilds.
Shutdown: four in a row, four reboot: Power down, no meson_pcie_link_watch faults.
Warm reboot: three in a row, back in 76-78 s, no SD read errors.

coderabbitai · 2026-09-17T00:33:49Z

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📝 Walkthrough

Walkthrough

The patch set adds ODROID-HC4 RTC alarm interrupt wiring, Meson PCIe suspend/resume and link recovery, PHY Wake-on-LAN handoff, and stmmac interrupt handling across the meson64 kernel archives.

Changes

ODROID-HC4 RTC alarm interrupt

Layer / File(s)	Summary
RTC alarm interrupt wiring `patch/kernel/archive/meson64-*/board-odroidhc4-rtc-alarm-irq.patch`	The PCF8563 RTC node maps its alarm to GPIOX_5 through `gpio_intc` with a level-low trigger.

Meson PCIe power and link recovery

Layer / File(s)	Summary
PCIe suspend and resume callbacks `patch/kernel/archive/meson64-*/general-pci-meson-pm-1-system-suspend-resume.patch`	The driver stops the LTSSM, powers down the PHY during suspend, and restores PCIe state during noirq resume.
PCIe resume link retraining `patch/kernel/archive/meson64-*/general-pci-meson-pm-2-link-retrain.patch`	Resume checks DLL Active status and retries link training for ports that previously had endpoints.
PCIe link watchdog and bus recovery `patch/kernel/archive/meson64-*/general-pci-meson-pm-3-link-watchdog.patch`	A delayed work item confirms link loss, removes downstream devices, retries root-complex recovery, rescans the bus, and stops safely during suspend, removal, and shutdown.

Ethernet power-management updates

Layer / File(s)	Summary
Phylink PHY Wake-on-LAN handoff `patch/kernel/archive/meson64-*/general-phylink-hand-wol-to-phy.patch`	Phylink transfers supported Wake-on-LAN modes to the PHY after bring-up and restores them to the MAC when the PHY disconnects.
stmmac suspend interrupt handling `patch/kernel/archive/meson64-*/general-stmmac-irq-shut-across-suspend.patch`	The stmmac driver disables the MAC interrupt across suspend when Wake-on-LAN is disabled and re-enables it on every resume exit path.

Priority: ➖ Normal

Estimated code review effort: 4 (Complex) | ~60 minutes

Change: Bug fix

Sequence Diagram(s)

sequenceDiagram
  participant PCIeWatchdog
  participant PCIeRecovery
  participant PCIeBus
  PCIeWatchdog->>PCIeWatchdog: confirm link remains down
  PCIeWatchdog->>PCIeBus: disconnect and remove downstream devices
  PCIeWatchdog->>PCIeRecovery: reset and retrain root complex
  PCIeRecovery-->>PCIeWatchdog: report recovery result
  PCIeWatchdog->>PCIeBus: rescan bus after successful recovery

Merge Risk: 🟡 Moderate · up to dfbbf

A Wake-on-LAN mode disabled while the PHY is attached can become enabled again when it disconnects. Update the handoff state before merging.

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Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main changes: ODROID-HC4 sleep and wake support through PCIe, Wake-on-LAN, and RTC alarm handling.

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The RTL8211F on HC4 has its interrupt wired to GPIOZ_14 and the device tree already describes it, but the node does not declare that it can wake the board. The Realtek PHY driver registers the interrupt as a wakeup IRQ only for nodes that say so: if (device_property_read_bool(dev, "wakeup-source") && phy_interrupt_is_valid(phydev)) { device_set_wakeup_capable(dev, true); devm_pm_set_wake_irq(dev, phydev->irq); } Without the property Wake-on-LAN looks enabled and does nothing: 'ethtool -s end0 wol g' succeeds, the PHY stores the magic packet and raises PME on its interrupt line, but that interrupt is not a wakeup source, so it is masked entering suspend and the board sleeps through the packet. Measured on ODROID-HC4. Before: a magic packet left the board asleep, the RTC alarm had to bring it back, and the network device reported wakeup_count 0. After: the same packet wakes the board within seconds. Added to 6.18, 7.2 and 7.3 only. The 6.12 Realtek driver has no wakeup-source handling at all, so the property would be inert there. Depends on the GPIO interrupt controller being able to hold a wakeup state: the PHY interrupt arrives through meson_gpio_irq_chip, so without IRQCHIP_SKIP_SET_WAKE (armbian#10738) this property is worse than useless — everything reports Wake-on-LAN as enabled while the board still cannot be woken. And on HC4 a woken board also needs PCIe suspend/resume support (armbian#10740) to find its SATA controller afterwards. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

The RTL8211F on HC4 has its interrupt wired to GPIOZ_14 and the device tree already describes it, but the node does not declare that it can wake the board. The Realtek PHY driver registers the interrupt as a wakeup IRQ only for nodes that say so: if (device_property_read_bool(dev, "wakeup-source") && phy_interrupt_is_valid(phydev)) { device_set_wakeup_capable(dev, true); devm_pm_set_wake_irq(dev, phydev->irq); } Without the property Wake-on-LAN looks enabled and does nothing: 'ethtool -s end0 wol g' succeeds, the PHY stores the magic packet and raises PME on its interrupt line, but that interrupt is not a wakeup source, so it is masked entering suspend and the board sleeps through the packet. Measured on ODROID-HC4. Before: a magic packet left the board asleep, the RTC alarm had to bring it back, and the network device reported wakeup_count 0. After: the same packet wakes the board within seconds. Added to 6.18, 7.2 and 7.3 only. The 6.12 Realtek driver has no wakeup-source handling at all, so the property would be inert there. Depends on the GPIO interrupt controller being able to hold a wakeup state: the PHY interrupt arrives through meson_gpio_irq_chip, so without IRQCHIP_SKIP_SET_WAKE (#10738) this property is worse than useless — everything reports Wake-on-LAN as enabled while the board still cannot be woken. And on HC4 a woken board also needs PCIe suspend/resume support (#10740) to find its SATA controller afterwards. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

iav · 2026-09-21T04:43:58Z

Rebuilt the branch. Patch 4 is folded into patch 3: the watchdog and stopping it are one change now, not a fix in the next patch. remove, .shutdown and the .prepare/.complete pair all use disable_delayed_work_sync() - the work re-arms itself at the end of every run, so a cancel that catches it running is undone by that same run.

Both Codex findings applied: the retry budget no longer stops the poll, only the reset, so a link that comes back on its own is noticed and the bus scanned again; and phylink now remembers the modes handed to the PHY and gives them back to the MAC when that PHY detaches.

On hardware, six shutdowns in a row: without stopping the watchdog, four end in a synchronous external abort in meson_pcie_link_watch with the board still running past reboot: Power down; with it, zero out of six. Ten sleep cycles across the two kernels lost no disks.

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Inline comments:
In `@patch/kernel/archive/meson64-7.2/general-phylink-hand-wol-to-phy.patch`:
- Line 91: Update phylink_ethtool_set_wol() to refresh pl->wolopts_phy from the
PHY’s returned w.wolopts masked by w.wolopts after phy_ethtool_get_wol(), before
recalculating the MAC mask; clear pl->wolopts_phy when the PHY path is inactive.
Apply the equivalent update to the meson64-7.3 patch as well.

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📒 Files selected for processing (8)

patch/kernel/archive/meson64-6.12/general-pci-meson-pm-3-link-watchdog.patch
patch/kernel/archive/meson64-6.18/general-pci-meson-pm-3-link-watchdog.patch
patch/kernel/archive/meson64-7.2/general-pci-meson-pm-3-link-watchdog.patch
patch/kernel/archive/meson64-7.2/general-phylink-hand-wol-to-phy.patch
patch/kernel/archive/meson64-7.2/general-stmmac-irq-shut-across-suspend.patch
patch/kernel/archive/meson64-7.3/general-pci-meson-pm-3-link-watchdog.patch
patch/kernel/archive/meson64-7.3/general-phylink-hand-wol-to-phy.patch
patch/kernel/archive/meson64-7.3/general-stmmac-irq-shut-across-suspend.patch

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Inline comments:
In
`@patch/kernel/archive/meson64-7.2/general-stmmac-irq-shut-across-suspend.patch`:
- Around line 87-88: In the resume path, track whether this invocation performed
disable_irq(), set ret to 0 and route early returns through the out label, and
move enable_irq() there guarded by that flag rather than netif_running(ndev).
Apply the same pairing fix to the corresponding 7.3 patch.

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📒 Files selected for processing (23)

patch/kernel/archive/meson64-6.12/board-odroidhc4-rtc-alarm-irq.patch
patch/kernel/archive/meson64-6.12/general-pci-meson-pm-1-system-suspend-resume.patch
patch/kernel/archive/meson64-6.12/general-pci-meson-pm-2-link-retrain.patch
patch/kernel/archive/meson64-6.12/general-pci-meson-pm-3-link-watchdog.patch
patch/kernel/archive/meson64-6.18/board-odroidhc4-rtc-alarm-irq.patch
patch/kernel/archive/meson64-6.18/general-pci-asm1061-disable-aspm.patch
patch/kernel/archive/meson64-6.18/general-pci-meson-pm-1-system-suspend-resume.patch
patch/kernel/archive/meson64-6.18/general-pci-meson-pm-2-link-retrain.patch
patch/kernel/archive/meson64-6.18/general-pci-meson-pm-3-link-watchdog.patch
patch/kernel/archive/meson64-7.2/board-odroidhc4-rtc-alarm-irq.patch
patch/kernel/archive/meson64-7.2/general-pci-asm1061-disable-aspm.patch
patch/kernel/archive/meson64-7.2/general-pci-meson-pm-1-system-suspend-resume.patch
patch/kernel/archive/meson64-7.2/general-pci-meson-pm-2-link-retrain.patch
patch/kernel/archive/meson64-7.2/general-pci-meson-pm-3-link-watchdog.patch
patch/kernel/archive/meson64-7.2/general-phylink-hand-wol-to-phy.patch
patch/kernel/archive/meson64-7.2/general-stmmac-irq-shut-across-suspend.patch
patch/kernel/archive/meson64-7.3/board-odroidhc4-rtc-alarm-irq.patch
patch/kernel/archive/meson64-7.3/general-pci-asm1061-disable-aspm.patch
patch/kernel/archive/meson64-7.3/general-pci-meson-pm-1-system-suspend-resume.patch
patch/kernel/archive/meson64-7.3/general-pci-meson-pm-2-link-retrain.patch
patch/kernel/archive/meson64-7.3/general-pci-meson-pm-3-link-watchdog.patch
patch/kernel/archive/meson64-7.3/general-phylink-hand-wol-to-phy.patch
patch/kernel/archive/meson64-7.3/general-stmmac-irq-shut-across-suspend.patch

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Three patches for pci-meson.c, added to meson64-6.12, -6.18, -7.2 and -7.3. 1. PM callbacks. On SM1 the controller sits in a power domain that genpd switches off during the noirq suspend phase, and the driver has no PM callbacks at all. The controller comes back unprogrammed, and the first config access to the root port after resume hangs the CPU. On ODROID-HC4, where the SATA controller lives behind that port, s2idle never returns. Suspend asserts PERST#, stops the LTSSM and powers the PHY off; resume repeats the probe sequence and hands over to dw_pcie_resume_noirq(), which reprograms the root complex, MSI and iATU and restarts the link. A stop_link callback, which the driver was missing entirely, goes in as well. dw_pcie_suspend_noirq() is not used: it broadcasts PME_Turn_Off through a MSG TLP window this controller does not have and fails with -ENOSPC, which aborts the noirq suspend phase for the whole system; the board then hangs in ahci's resume. Measured on HC4. A glue driver can ask the core for that window by setting pp.use_atu_msg before dw_pcie_host_init(), as pci-imx6.c and pcie-nxp-s32g.c do - worth doing, not done here. 2. Retrain the link on resume. meson_pcie_link_up() reports the controller's SMLH and RDLH bits, and after a resume that does not train the link both read as up while the data link layer is down: LNKSTA comes back as 0x1011 with DLL Active clear and the endpoint answers 0xffffffff. Ask the link status register once the root complex is back and, while the data link layer is down, rebuild it and train again, holding the endpoint in reset for T_PVPERL first. A dw_pcie_resume_noirq() that fails counts as an attempt too; after three of them resume gives up rather than reporting a link that carries nothing. A slot that had no device before the suspend gets a single attempt and no error - an empty slot never trains, and host init leaves it alone as well. 3. Rebuild the root complex after a link down reset. The same signature has also shown up with no sleep at all, after swapping the two disks on a running board: the root complex registers read as their defaults (bus numbers, COMMAND and LNKCTL zero), every config access below the port returns all ones, and the devices stay gone. Nothing puts those registers back: the only interrupt this controller has goes to MSI, so there is no link down handler, and AER reports nothing either. The endpoint survives it - unbinding and binding the driver brings everything back - so poll the link once a second and, when a link that carried a device goes down, do that automatically the way pciehp handles a surprise removal: mark the devices disconnected, remove them, and run the same path resume uses to program the root complex and train the link, with the MSI interrupt masked while the controller is in reset. On success the bus is scanned again. An empty slot is left alone. Once the devices are removed the port looks empty as well, so a flag keeps the poll going, and after three failed rebuilds the port is no longer reset, rather than reset once a second forever. The poll carries on, so a link that comes back on its own is still noticed and the bus scanned again; a system resume gives such a port three more tries. A link seen down is read again 100 ms later before anything is torn down, and the warning carries COMMAND and LNKSTA of the root port and the controller's STATUS12, to tell a real link down from a misread. The poll stops in .prepare, before the devices behind the port suspend, and restarts from .complete, once they have resumed. It is disabled rather than cancelled: the work re-arms itself at the end of every run, so a cancel that caught it running would be undone by that same run. Removal and shutdown disable it for good - otherwise the poll outlives the controller and reads registers whose power and clocks are gone. Without that, four shutdowns out of six on an ODROID-HC4 end in a synchronous external abort in meson_pcie_link_watch and the board keeps running past reboot: Power down; with it, six out of six power down cleanly. Builds on all four branches. On ODROID-HC4 with two SATA disks (7.2): s2idle woken by the RTC alarm, the link back at Gen2 x1 in resume, both disks read afterwards. In two of ten cold boots the poll rebuilt the port while the disks were spinning up; the one warning that carried the new fields read COMMAND 0x0000 and LNKSTA 0x1011, a real link down. The disks came back after about 4 s once and after about 30 s once, the latter while SCSI commands to the lost disk ran out their timeout. Assisted-by: Claude:claude-opus-5

A board configured for Wake-on-Lan the usual way - nmcli, which netplan turns into a .link file - never wakes on a magic packet. udev applies WakeOnLan= as soon as the interface appears, and stmmac attaches the PHY only when the interface is opened, so phylink has no PHY to offer the request to and leaves it at the MAC. The MAC on SM1 has no wake line of its own ("IRQ eth_wake_irq not found"), and a later ethtool call is a no-op because the state already reads as "g". Offer the stored MAC options to the PHY as it attaches, keep at the MAC only what the PHY does not take, as phylink_ethtool_set_wol() does. The series that put WoL under phylink (b79fbd86c849, v6.19) left the initial state unhandled; this covers it. A PHY on its way out - an SFP pulled, the interface taken down - takes its Wake-on-Lan with it, so ask it what it wakes on while it is still there and arm the MAC for as much of that as the MAC supports; the next PHY is then offered everything the MAC holds. Assisted-by: Claude:claude-opus-5

Resume resets the MAC, and every core interrupt stays unmasked until the mask is written again: a link change in that window storms the CPU with "unexpected status 04000000" until the board is power cycled. Shut the line for as long as that takes, from the start of resume until the hardware is set up again. The line is requested with IRQF_SHARED, so disabling it stops every handler on it, not only this one; a line closed for the whole sleep would silence a co-owner that wakes the system. Closing it in resume alone also covers a MAC that owns a wake source itself: such a MAC needs the line alive while asleep, and the same reset waits for it on the way back. Resume gives the line back on every path out, not just the successful one: the PM core clears the suspended flag whatever the callback returns, so a resume that failed early would otherwise leave the interrupt disabled one level deeper each cycle. Assisted-by: Claude:claude-opus-5

The PCF8563 node on ODROID-HC4 is marked as a wakeup source but has no interrupt, so its alarm reaches nothing and the board sleeps through it. The INT line sits on GPIOX_5; point the node at it and the alarm wakes the board from s2idle. Added to all four branches. Assisted-by: Claude:claude-opus-5

Since v6.18 the kernel enables L0s and L1 by default on devicetree platforms. On ODROID-HC4 the link to the ASM1061 then died in L1 while the disk spun up after s2idle resume, in 6 of 21 cycles; the watchdog rebuilt the root complex each time. With this quirk: 0 of 15. Disable L0s and L1 on 1b21:0611 as mainline does for the ASM1083. Assisted-by: Claude:claude-opus-5

github-actions Bot added size/large PR with 250 lines or more 11 Milestone: Fourth quarter release labels Sep 17, 2026

This was referenced Sep 17, 2026

meson64: allow GPIO interrupts to act as wakeup sources #10738

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odroidhc4: let the ethernet PHY wake the board iav/armbian#248

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github-actions Bot added Needs review Seeking for review Hardware Hardware related like kernel, U-Boot, ... Patches Patches related to kernel, U-Boot, ... labels Sep 17, 2026

iav mentioned this pull request Sep 17, 2026

odroidhc4: let the ethernet PHY wake the board #10741

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iav mentioned this pull request Sep 17, 2026

meson64: require the PCIe port services on boards that have PCIe #10739

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iav force-pushed the fix/meson64-pcie-suspend-resume branch from 26178d5 to e2a80ee Compare September 17, 2026 18:28

iav mentioned this pull request Sep 17, 2026

meson64: move the pending MPS series from v7 to v9 #10743

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iav force-pushed the fix/meson64-pcie-suspend-resume branch from e2a80ee to 85c7ca9 Compare September 17, 2026 21:59

iav changed the title ~~meson64: restore the PCIe controller after system sleep~~ meson64: survive system sleep and recover from a PCIe link down reset Sep 17, 2026

iav force-pushed the fix/meson64-pcie-suspend-resume branch 6 times, most recently from 4f904d8 to 6996897 Compare September 20, 2026 01:57

iav changed the title ~~meson64: survive system sleep and recover from a PCIe link down reset~~ meson64: sleep and wake on ODROID-HC4 - PCIe, Wake-on-Lan and the RTC alarm Sep 20, 2026

iav force-pushed the fix/meson64-pcie-suspend-resume branch from 6996897 to c6ec4b7 Compare September 20, 2026 02:00

iav marked this pull request as ready for review September 20, 2026 02:04

iav requested review from SteeManMI, adeepn, igorpecovnik, pyavitz and rpardini as code owners September 20, 2026 02:04

iav force-pushed the fix/meson64-pcie-suspend-resume branch from 60b6a6c to be12c60 Compare September 20, 2026 04:36

iav marked this pull request as draft September 20, 2026 21:26

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iav force-pushed the fix/meson64-pcie-suspend-resume branch from a0e3560 to dfbbf19 Compare September 21, 2026 04:46

iav marked this pull request as ready for review September 21, 2026 04:50

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Comment thread patch/kernel/archive/meson64-7.2/general-phylink-hand-wol-to-phy.patch Outdated

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iav marked this pull request as draft September 21, 2026 05:00

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Comment thread patch/kernel/archive/meson64-7.2/general-stmmac-irq-shut-across-suspend.patch Outdated

github-actions Bot added the Work in progress Unfinished / work in progress label Sep 22, 2026

iav force-pushed the fix/meson64-pcie-suspend-resume branch from 488cd99 to 713a45a Compare September 22, 2026 18:21

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meson64: sleep and wake on ODROID-HC4 - PCIe, Wake-on-Lan and the RTC alarm - #10740

meson64: sleep and wake on ODROID-HC4 - PCIe, Wake-on-Lan and the RTC alarm#10740
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iav commented Sep 17, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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PCIe: survive the sleep (patches 1-3, pci-meson.c, all four branches)

Wake-on-Lan reaches the PHY (patch 4, phylink.c, 7.2 and 7.3)

The MAC interrupt stays shut across a sleep (patch 5, stmmac_main.c, 7.2 and 7.3)

RTC alarm interrupt (patch 6, board DTS, all four branches)

Tested on ODROID-HC4 with two SATA disks

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iav commented Sep 17, 2026 •

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PCIe: survive the sleep (patches 1-3, `pci-meson.c`, all four branches)

Wake-on-Lan reaches the PHY (patch 4, `phylink.c`, 7.2 and 7.3)

The MAC interrupt stays shut across a sleep (patch 5, `stmmac_main.c`, 7.2 and 7.3)

coderabbitai Bot commented Sep 17, 2026 •

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