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d/patches: disable audiopd daemon on QRB2210 #97

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41 changes: 41 additions & 0 deletions debian/patches/qrb2210-disable-audiopd
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Original file line number Diff line number Diff line change
@@ -0,0 +1,41 @@
From: Christopher Obbard <chris.obbard@oss.qualcomm.com>
Date: Wed, 16 Sep 2026 16:00:55 +0100
Subject: Disable audiopd daemon on QRB2210

QRB2210 (RB1 and Arduino Uno Q) exposes /dev/fastrpc-adsp, so the unit's
existing ConditionPathExists= checks pass and adsprpcd is started, but on
these Agatti platforms the device tree does not protect the memory region
used by fastrpc. Starting the audiopd daemon reboots the board which makes
the machine unusable rather than simply leaving the unit failed.

The kernel side is fixed by the device tree patch linked below but it may
not reach released kernels for some time. Until it does, guard the
unit with a ConditionFirmware= match on the device tree compatible so it
is skipped on affected machines:
https://lore.kernel.org/all/20260908-agatti-audio-v4-1-b3db91d3fdec@oss.qualcomm.com/

Bug: https://github.com/qualcomm-linux/qcom-deb-images/issues/572
Forwarded: no
Last-Update: 2026-09-16

Signed-off-by: Christopher Obbard <chris.obbard@oss.qualcomm.com>
---
files/adsprpcd_audiopd.service.in | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/files/adsprpcd_audiopd.service.in b/files/adsprpcd_audiopd.service.in
index 6fb786c..b212548 100644
--- a/files/adsprpcd_audiopd.service.in
+++ b/files/adsprpcd_audiopd.service.in
@@ -3,6 +3,11 @@ Description=audiopd aDSP RPC daemon
After=dev-fastrpc\x2dadsp.device dev-fastrpc\x2dadsp\x2dsecure.device
ConditionPathExists=|/dev/fastrpc-adsp
ConditionPathExists=|/dev/fastrpc-adsp-secure
+# Starting audiopd reboots QRB2210 devices (RB1 and Arduino Uno Q) because
+# the fastrpc memory region is not protected in the device tree, see
+# https://github.com/qualcomm-linux/qcom-deb-images/issues/572
+# TODO: drop this once the device tree fix has reached released kernels
+ConditionFirmware=!device-tree-compatible(qcom,qrb2210)

[Service]
Type=exec
1 change: 1 addition & 0 deletions debian/patches/series
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Original file line number Diff line number Diff line change
@@ -1,2 +1,3 @@
udev-start-offline-dsp-remoteprocs
fix-hexagon-path-separator
qrb2210-disable-audiopd
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