The osdrv packages create default.ini as a symlink to one fixed sensor's
IQ file -- imx307.ini for hisilicon-osdrv-hi3516ev200 and
goke-osdrv-gk7205v200. Two device profiles prune that exact file to fit
NOR and leave the symlink behind, so the image ships a default.ini that
resolves to nothing.
majestic answers that silently. init_iq_monitor() (src/hisi/sdk.c) has no
default for isp.iqProfile, falls through to /etc/sensors/iq/default.ini,
and returns on `access(default_prof, 0) != 0` without logging at any
level. No IQ profile means no monitor thread, so SCENE_Set3DNR() never
runs and VPSS keeps the single static NRX block from scene.c tune_vpss()
at every ISO. The explicit-iqProfile path does log "Cannot find %s file";
only this fallback is mute.
Measured on a lab hi3516ev300_85h50ai (IMX335, nightly-20260904-605fa9d)
against a night scene at ISO ~30000, changing nothing but the profile
majestic loads:
dangling imx335.ini
RTSP, 20 s capture 14.13 Mbit/s 3.54 Mbit/s
/proc/umap/rc InsBr 14310 kbps 3626 kbps
StartQp 42 (= MaxQp) 31
3DNR SFS2 5/16/0/30 36/60/60/52
3DNR TFS 1/7/12/10 5/9/13/11
The encoder was configured correctly the whole time -- VBR 4096, MinQp
28, MaxQp 42. Rate control pinned at MaxQp while still emitting 14 Mbit/s
is what an undenoised sensor at ISO 30000 costs, not a bitrate that was
ignored. It reads as "the bitrate setting does nothing" and "3DNR is
off", which is how it was reported.
hi3516ev300_lite_xm-85h50ai keeps imx335.ini and runs an IMX335, so
general/overlay now carries a default.ini aimed at it. BR2_ROOTFS_OVERLAY
is rsynced after the packages install and rootfs_script.sh runs the
excludes list after that, so the overlay's symlink replaces the package's
and the pruning that follows is harmless. This also stops the board
loading an IMX307 profile for an IMX335 sensor, which is what it would
have got had imx307.ini simply been kept.
gk7202v300_lite_ipg-g3-wr prunes every IQ file its package installs
(imx307, imx335, sc2232), so there is nothing to aim a symlink at. It
drops default.ini instead. Behaviour is unchanged -- majestic already
loads no profile there -- but the image stops carrying a broken link that
would silently start resolving to the wrong sensor's profile the moment
one of those entries goes stale. The board runs jxh63, which no shipped
IQ file covers; a note in the list records that keeping imx307.ini costs
126 KB if it turns out to want one.
An audit of every device profile against its SoC's osdrv package finds no
others: the rest either keep the symlink's target, remove default.ini
already, or pin .isp.iqProfile in customizer.sh.
XiongMai's 85H50AI: hi3516ev300 + imx335 with a motorized zoom/focus
module whose MCU shares /dev/ttyAMA0 with the serial console at 115200,
speaking the XM near-Pelco protocol (majestic-webui's btzoom-xm).
Proven on a lab unit driven end to end through the WebUI
(majestic-webui#227).
The defconfig is a byte-copy of firmware's hi3516ev300_lite_defconfig.
customizer.sh (first boot) sets sensor imx335, the upgrade URL, and the
PTZ trio — ptz_control pelco-xm, ptz_port /dev/ttyAMA0, ptz_caps
'zoom focus' (majestic-webui#261) — and deletes the getty line from
/etc/inittab: the MCU owns the console UART. The edit lands in the
overlay and heals itself (an upgrade that wipes the overlay wipes
/etc/custom.ok too, so the script re-runs). S01printk quiets runtime
kernel messages that would drip onto the PTZ wire. The required
hi3516ev300_lite excludes list prunes every non-imx335 sensor blob,
generated from the live lite image so no entry is stale on arrival.
