[BUG] ASoC: amd: ps / soundwire: SDW peripherals unrecoverable after s0i3 on Strix Halo (ACP7.0)

[Adnrey Golovko <andrey.golovko@gmail.com>]

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   SoundWire slaves lose firmware after s2idle on AMD ACP7.0 (Strix Halo) —
   TAS2783 cannot resume

   ## Summary

   On ASUS ProArt PX13 HN7306EAC (AMD Ryzen AI MAX+ 395, Strix Halo) 
with  ACP  PCI
   rev  0x70  (ACP7.0), entering  s2idle  for as little as 3.8 seconds 
causes the
   Realtek RT721 SDCA and TI TAS2783 SoundWire peripherals to enter an
   unrecoverable state. After resume,  Peripheral status = unattached  
and the
   TAS2783 driver reports  error playback without fw download . No 
software-only
   recovery is possible — driver re-bind, PCI hot remove+rescan, and 
module reload
   all fail. Only a full machine reboot restores audio.

   Filed because all available fixes in current upstream/-next are 
already applied
   and do not address the root cause.

   ## Hardware

     DMI:               ASUS HN7306EAC, BIOS HN7306EAC.307 (2026-01-27)
     CPU:               AMD Ryzen AI MAX+ 395 w/ Radeon 8060S (Strix Halo)
     ACP PCI ID:        1022:15e2 rev 0x70  (sysfs: 0000:c4:00.5)
     ACP driver:        snd_pci_ps
     SoundWire link 1:  Realtek RT721 SDCA  (sdw:0:1:025d:0721:01)
                        2× TI TAS2783        (sdw:0:1:0102:0000:01:8, 
...:01:b)
     TAS2783 firmware:  /lib/firmware/1714-1-{8,B}.bin  (extracted from 
Windows
                        driver — ASUS does not ship to linux-firmware as 
of 2026-
   05)
     ACPI path:         \_SB.PCI0.GPPA.ACP.SDWC.SWM1

   ## Kernel

     Linux 7.1.0-rc3 + 3 backports:
       c368dd5cbd61 soundwire: don't program SDW_SCP_BUSCLOCK_SCALE on a 
unattached
   Peripheral
       9a0afdd19a01 soundwire: stream: sdw_stream_remove_slave(): Check 
stream is
   valid
       e09bbf11b53f HID: input: delete hid_battery on disconnect 
(unrelated)

    git log v7.1-rc3..v7.1-rc4 -- sound/soc/amd drivers/soundwire/ is 
empty.
    broonie/sound#for-next  adds  sound/soc/amd/acp7x/  (ACP7.D/E/F, rev 
0x7D-0x7F)
   —
   not applicable to ACP7.0.

   ## DSDT / ACPI properties

   SWM1 (active link) has:

     amd-sdw-power-mode                    = 0x02  (AMD_SDW_POWER_OFF_MODE)
     amd-sdw-enable                        = 1
     amd-sdw-wakeup-enable                 = 1
     mipi-sdw-clock-stop-mode0-supported   = 1
     mipi-sdw-clock-stop-mode1-supported   = 0

   No  _PS0 / _PS3 / _PR0 / _PR3  methods for \_SB.PCI0.GPPA.ACP.SDWC  
or its
    SWM0 / SWM1  children, no  _RST  method.

   With  power_mode_mask = AMD_SDW_POWER_OFF_MODE ,
   drivers/soundwire/amd_manager.c
   correctly takes the full deinit/init path: amd_deinit_sdw_manager()  on
   suspend,
    sdw_clear_slave_status(SDW_UNATTACH_REQUEST_MASTER_RESET) +
   amd_sdw_clk_init_ctrl +
   amd_init_sdw_manager + amd_enable_sdw_manager + 
amd_sdw_set_frameshape  on
   resume.
    snd_acp70_resume()  in  sound/soc/amd/ps/ps-common.c  correctly 
takes the slow
   path ( acp_hw_init  + pad-keeper restore) because  sdw_en_stat  is 
cleared
   during
   suspend by  amd_deinit_sdw_manager . So the driver-level resume code 
paths are
   exercised correctly. The failure is at a lower level.

   ## Reproducer

     # Cold boot, audio works.
     $ aplay -l | grep amdsoundwire
     card 1: amdsoundwire ... SDW1-PIN1-PLAYBACK-SmartAmp multicodec-2 []
     $ speaker-test -D plughw:1,2 -c2  # → works

     # One s2idle cycle:
     $ systemctl suspend
     # (3.8 sec residency in s0i3, /sys/kernel/debug/amd_pmc/s0ix_stats 
confirms)
     # (woken by i2c-ASCF1A03:00 touchpad wake event, but issue 
reproduces with
     #  any wake source including RTC alarm)

     # After resume:
     $ speaker-test -D plughw:1,2 -c2
     Setting of hwparams failed: Invalid argument

   ## Evidence — kernel trace

    /sys/power/suspend_stats :

     last_failed_dev    = sdw:0:1:0102:0000:01:b
     last_failed_step   = resume
     last_hw_sleep      = 3825561   (µs)

    journalctl -k  around suspend/resume:

     PM: suspend entry (s2idle)
     Freezing user space processes completed
     printk: Suspending console(s)
     ACPI: EC: interrupt blocked
     ACPI: EC: interrupt unblocked
     slave-tas2783 sdw:0:1:0102:0000:01:8: PM: dpm_run_callback():
   acpi_subsys_resume returns -110
     slave-tas2783 sdw:0:1:0102:0000:01:8: PM: failed to resume: error -110
     slave-tas2783 sdw:0:1:0102:0000:01:b: PM: dpm_run_callback():
   acpi_subsys_resume returns -110
     slave-tas2783 sdw:0:1:0102:0000:01:b: PM: failed to resume: error -110
     PM: suspend exit
     snd_pci_ps 0000:c4:00.5: AMD-Vi: Event logged [IO_PAGE_FAULT
        domain=0x0018 address=0xfffffffffffffffc flags=0x0030]

   The  0xfffffffffffffffc  IOMMU fault address is the sentinel returned 
when PCI
   config reads return  0xff..ff , i.e., ACP is in an inaccessible state 
at the
   moment of DMA.

   Detailed resume-path trace (excerpts):

     amd_sdw_manager amd_sdw_manager.1: SCP_addrpage ignored for Slave 1
     soundwire sdw-master-0-1: trf on Slave 1 failed:-5 write addr 8089 
count 0
     amd_sdw amd_sdw: ASoC: PRE_PMD: tas2783-2 FU21 event failed: -5
     amd_sdw_manager amd_sdw_manager.1: SCP_addrpage ignored for Slave 2
     soundwire sdw-master-0-1: trf on Slave 2 failed:-5 write addr 8089 
count 0
     rt721-sdca sdw:0:1:025d:0721:01: Initialization not complete, timed 
out
     amd_sdw_manager amd_sdw_manager.1: slave_stat:0x1
     soundwire sdw-master-0-1: PING status: 0x1
     amd_sdw_manager amd_sdw_manager.1: SDW1 clock stop successful
     amd_sdw_manager amd_sdw_manager.1: AMD_SDW_DEVICE_STATE:0xc
     amd_sdw_manager amd_sdw_manager.1: mclk 24000000 max 12000000 row 
50 col 10
   frame_rate:48000
     amd_sdw_manager amd_sdw_manager.1: AMD_SDW_DEVICE_STATE:0x0
     snd_pci_ps 0000:c4:00.5: AMD-Vi: Event logged [IO_PAGE_FAULT ...
   0xfffffffffffffffc ...]
     slave-tas2783 sdw:0:1:0102:0000:01:8: resume: initialization timed out
     soundwire sdw-master-0-1: PING status: 0x1

   Note  PING status: 0x1  — the SoundWire PING-frame status returns the 
same low
   value before and after the manager attempts to re-enumerate. 
Peripherals are
   not responding on the wire even though clock is running.

   Steady-state symptoms after the resume path completes (slave drivers 
loaded,
   codec link tries to prepare PCM):

     slave-tas2783 sdw:0:1:0102:0000:01:8: Peripheral status = unattached
     slave-tas2783 sdw:0:1:0102:0000:01:8: error playback without fw 
download
     slave-tas2783 sdw:0:1:0102:0000:01:8: ASoC error (-22): at
   snd_soc_dai_hw_params()
     soundwire sdw-master-0-1: Program transport params failed: -61
     amd_sdw_manager amd_sdw_manager.1: command is ignored for Slave 2

    command is ignored for Slave N  from  amd_sdw_fill_msg_resp() 
indicates the
   SoundWire bus sees no ACK for any peripheral command — the 
peripherals are not
   responding on the wire.

   The  error playback without fw download  from  tas2783-sdw.c  is the 
giveaway —
   the TAS2783 driver explicitly knows its firmware blob is no longer 
loaded.
   During cold boot the firmware is downloaded after slave attach; after 
s0i3, the
   slave never reaches attached state, so the firmware download path is 
never
   re-entered.

   ## Recovery attempts — ALL FAIL

   Attempt                                │Result
───────────────────────────────────────┼────────────────────────────────────────
   Stop PipeWire,  rmmod snd_soc_tas2783_…│ EBUSY  — kernel ALSA-SOC 
retry loop ho…
    echo 0000:c4:00.5 > /sys/bus/pci/driv…│Probe replays cleanly ( probe 
complete …
   PCIe Function-Level Reset ( /sys/.../r…│File does not exist — ACP 
does not adve…
    echo 1 > /sys/bus/pci/devices/0000:c4…│Same as unbind+bind — slaves 
enumerate …
   pm-utils system-sleep hook running the…│Same
   BIOS update 305 → 307                  │No change

   This is consistent with the underlying SMU behaviour on Strix Halo s0i3:
   the ACP power island is power-gated, peripherals connected to the 
SoundWire
   pads lose state including firmware. There is no software path from 
the OS
   to re-power the slave chips short of a full machine reboot.

   ## What I think the bug is

   Either (a) the AMD SMU should hold the ACP power island powered 
during s0i3
   when SoundWire link is active and peripherals require firmware (BIOS 
or SMU
   firmware change), or (b) the kernel needs an explicit recovery path 
that:

   1. Detects in  snd_acp70_resume()  that ACP was actually power-gated 
(e.g.
   by reading a sentinel register that survives only across non-power-gated
   suspend).
   2. If power-gated, performs a full peripheral-chip reset (some 
platform-specific
   GPIO toggle? secondary bus reset on the ACP's PCIe link?) before the SDW
   manager attempts to re-enumerate.
   3. Triggers each slave driver's firmware-download path on resume.

   I cannot find any GPIO under  \_SB.PCI0.GPPA.ACP  in DSDT that would 
let the
   kernel toggle slave chip power. Is there an SMU command available via
    amd_pmc  that would force a re-power of the ACP island? Or is this a 
BIOS
   deficiency on this specific HN7306EAC firmware?

   ## Workaround currently used

    suspend  is disabled in GNOME.  hibernate  (S4) works because it 
goes through
   a full cold-boot path.

   ## Asks

   1. Is there a known software path to recover SoundWire peripherals after
   ACP power-gate that I missed?
   2. If not — would AMD consider adding either a full ACP island re-power
   sequence in  snd_acp70_resume()  or a peripheral-reset hook that
   slave drivers can call from their resume path?
   3. Should ASUS BIOS be updated to either advertise  _RST  for SDW nodes
   or prevent SMU from power-gating ACP during s0i3 when SDW is active?
   (Happy to file with ASUS Linux team if you can confirm direction.)

   I have full DSDT/SSDT decode, complete dmesg traces, and a reproducer
   environment if more data is helpful. Source tree with all backports at
    https://github.com/...  (will set up on request).

   Tested on  7.1.0-rc3  + backports above. Confirmed same failure on stock
    7.1.0-070100rc3-generic  from kernel.ubuntu.com/mainline/v7.1-rc3/ .

   Thanks,
   Andrey Golovko

[-- Attachment #2: dsdt-sdwc.dsl --]
[-- Type: text/x-dsl, Size: 4268 bytes --]

        Device (SDWC)
        {
            Name (_ADR, 0x05)  // _ADR: Address
            Name (_DSD, Package (0x04)  // _DSD: Device-Specific Data
            {
                ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301") /* Device Properties for _DSD */, 
                Package (0x03)
                {
                    Package (0x02)
                    {
                        "mipi-sdw-sw-interface-revision", 
                        0x00010000
                    }, 

                    Package (0x02)
                    {
                        "mipi-sdw-manager-list", 
                        0x03
                    }, 

                    Package (0x02)
                    {
                        "amd-sdw-aggregation-master-id", 
                        0xFFFF
                    }
                }, 

                ToUUID ("dbb8e3e6-5886-4ba6-8795-1319f52a966b") /* Hierarchical Data Extension */, 
                Package (0x02)
                {
                    Package (0x02)
                    {
                        "mipi-sdw-link-0-subproperties", 
                        "SWM0"
                    }, 

                    Package (0x02)
                    {
                        "mipi-sdw-link-1-subproperties", 
                        "SWM1"
                    }
                }
            })
            Name (SWM0, Package (0x02)
            {
                ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301") /* Device Properties for _DSD */, 
                Package (0x0E)
                {
                    Package (0x02)
                    {

--- SWM1 properties (active link with RT721 + 2× TAS2783) ---
            Name (SWM1, Package (0x02)
            {
                ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301") /* Device Properties for _DSD */, 
                Package (0x0E)
                {
                    Package (0x02)
                    {
                        "mipi-sdw-sw-interface-revision", 
                        0x00010000
                    }, 

                    Package (0x02)
                    {
                        "mipi-sdw-clock-stop-mode0-supported", 
                        One
                    }, 

                    Package (0x02)
                    {
                        "mipi-sdw-clock-stop-mode1-supported", 
                        Zero
                    }, 

                    Package (0x02)
                    {
                        "mipi-sdw-max-clock-frequency", 
                        0x00B71B00
                    }, 

                    Package (0x02)
                    {
                        "mipi-sdw-supported-clock-scales", 
                        Zero
                    }, 

                    Package (0x02)
                    {
                        "mipi-sdw-default-frame-rate", 
                        0xBB80
                    }, 

                    Package (0x02)
                    {
                        "mipi-sdw-default-frame-row-size", 
                        0x32
                    }, 

                    Package (0x02)
                    {
                        "mipi-sdw-default-frame-col-size", 
                        0x0A
                    }, 

                    Package (0x02)
                    {
                        "mipi-sdw-dynamic-frame-shape", 
                        Zero
                    }, 

                    Package (0x02)
                    {
                        "mipi-sdw-command-error-threshold", 
                        Zero
                    }, 

                    Package (0x02)
                    {
                        "amd-sdw-enable", 
                        One
                    }, 

                    Package (0x02)
                    {
                        "amd-sdw-wakeup-enable", 
                        One
                    }, 

                    Package (0x02)
                    {
                        "amd-sdw-power-mode", 
                        0x02
                    }, 

                    Package (0x02)
                    {
                        "amd-sdw-multi-lane-enable", 
                        One
                    }
                }
            })

[-- Attachment #3: sysinfo.txt --]
[-- Type: text/plain, Size: 577 bytes --]

# System info

## DMI
ASUS
ProArt PX13 HN7306EAC
ProArt PX13
BIOS: American Megatrends International, LLC. HN7306EAC.307 01/27/2026

## CPU
model name	: AMD RYZEN AI MAX+ 395 w/ Radeon 8060S

## Kernel
Linux asus-px 7.1.0-rc3-px13fix #2 SMP PREEMPT_DYNAMIC Thu May 14 20:38:57 MSK 2026 x86_64 GNU/Linux

## ACP PCI
c4:00.5 Multimedia controller [0480]: Advanced Micro Devices, Inc. [AMD] Audio Coprocessor [1022:15e2] (rev 70)
rev: 0x0x70
driver: snd_pci_ps

## SoundWire devices
sdw-master-0-0
sdw-master-0-1
sdw:0:1:0102:0000:01:8
sdw:0:1:0102:0000:01:b
sdw:0:1:025d:0721:01

[-- Attachment #4: trace-summary.txt --]
[-- Type: text/plain, Size: 4019 bytes --]

# Trace of one failing s2idle cycle (captured 2026-05-22)

## PM events
May 22 15:10:43 asus-px kernel: PM: suspend entry (s2idle)
May 22 15:11:05 asus-px kernel: Freezing user space processes
May 22 15:11:05 asus-px kernel: Freezing user space processes completed (elapsed 0.001 seconds)
May 22 15:11:05 asus-px kernel: Freezing remaining freezable tasks
May 22 15:11:05 asus-px kernel: Freezing remaining freezable tasks completed (elapsed 0.000 seconds)
May 22 15:11:05 asus-px kernel: printk: Suspending console(s) (use no_console_suspend to debug)
May 22 15:11:05 asus-px kernel: ACPI: EC: interrupt blocked
May 22 15:11:05 asus-px kernel: ACPI: EC: interrupt unblocked
May 22 15:11:05 asus-px kernel: snd_pci_ps 0000:c4:00.5: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0018 address=0xfffffffffffffffc flags=0x0030]
May 22 15:11:05 asus-px kernel: slave-tas2783 sdw:0:1:0102:0000:01:8: PM: dpm_run_callback(): acpi_subsys_resume returns -110
May 22 15:11:05 asus-px kernel: slave-tas2783 sdw:0:1:0102:0000:01:8: PM: failed to resume: error -110
May 22 15:11:05 asus-px kernel: slave-tas2783 sdw:0:1:0102:0000:01:b: PM: dpm_run_callback(): acpi_subsys_resume returns -110
May 22 15:11:05 asus-px kernel: slave-tas2783 sdw:0:1:0102:0000:01:b: PM: failed to resume: error -110
May 22 15:11:05 asus-px kernel: PM: suspend exit

## Steady-state symptoms after resume (first 20 lines)
May 22 15:11:05 asus-px kernel: amd_sdw_manager amd_sdw_manager.1: SCP_addrpage ignored for Slave 1
May 22 15:11:05 asus-px kernel: soundwire sdw-master-0-1: trf on Slave 1 failed:-5 write addr 8089 count 0
May 22 15:11:05 asus-px kernel: amd_sdw amd_sdw: ASoC: PRE_PMD: tas2783-2 FU21 event failed: -5
May 22 15:11:05 asus-px kernel: amd_sdw_manager amd_sdw_manager.1: SCP_addrpage ignored for Slave 1
May 22 15:11:05 asus-px kernel: soundwire sdw-master-0-1: trf on Slave 1 failed:-5 write addr 8109 count 0
May 22 15:11:05 asus-px kernel: amd_sdw amd_sdw: ASoC: PRE_PMD: tas2783-2 FU23 event failed: -5
May 22 15:11:05 asus-px kernel: amd_sdw_manager amd_sdw_manager.1: SCP_addrpage ignored for Slave 2
May 22 15:11:05 asus-px kernel: soundwire sdw-master-0-1: trf on Slave 2 failed:-5 write addr 8089 count 0
May 22 15:11:05 asus-px kernel: amd_sdw amd_sdw: ASoC: PRE_PMD: tas2783-1 FU21 event failed: -5
May 22 15:11:05 asus-px kernel: amd_sdw_manager amd_sdw_manager.1: SCP_addrpage ignored for Slave 2
May 22 15:11:05 asus-px kernel: soundwire sdw-master-0-1: trf on Slave 2 failed:-5 write addr 8109 count 0
May 22 15:11:05 asus-px kernel: amd_sdw amd_sdw: ASoC: PRE_PMD: tas2783-1 FU23 event failed: -5
May 22 15:11:05 asus-px kernel: rt721-sdca sdw:0:1:025d:0721:01: Initialization not complete, timed out
May 22 15:11:05 asus-px kernel: amd_sdw_manager amd_sdw_manager.1: slave_stat:0x1
May 22 15:11:05 asus-px kernel: soundwire sdw-master-0-1: PING status: 0x1
May 22 15:11:05 asus-px kernel: amd_sdw_manager amd_sdw_manager.1: SDW1 clock stop successful
May 22 15:11:05 asus-px kernel: amd_sdw_manager amd_sdw_manager.1: AMD_SDW_DEVICE_STATE:0xc
May 22 15:11:05 asus-px kernel: amd_sdw_manager amd_sdw_manager.1: mclk 24000000 max 12000000 row 50 col 10 frame_rate:48000
May 22 15:11:05 asus-px kernel: amd_sdw_manager amd_sdw_manager.1: AMD_SDW_DEVICE_STATE:0x0
May 22 15:11:05 asus-px kernel: snd_pci_ps 0000:c4:00.5: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0018 address=0xfffffffffffffffc flags=0x0030]
May 22 15:11:05 asus-px kernel: slave-tas2783 sdw:0:1:0102:0000:01:8: resume: initialization timed out
May 22 15:11:05 asus-px kernel: amd_sdw_manager amd_sdw_manager.1: slave_stat:0x1
May 22 15:11:05 asus-px kernel: soundwire sdw-master-0-1: PING status: 0x1
May 22 15:11:05 asus-px kernel: slave-tas2783 sdw:0:1:0102:0000:01:8: PM: dpm_run_callback(): acpi_subsys_resume returns -110
May 22 15:11:05 asus-px kernel: slave-tas2783 sdw:0:1:0102:0000:01:8: PM: failed to resume: error -110

## suspend_stats after failure
last_failed_dev:  sdw:0:1:0102:0000:01:b
last_failed_step: resume
(captured 2026-05-22)