BFE Engineering
42fb386f60
Replace every em dash with real punctuation (rewrites, not hyphen swaps) in docs, code comments, scripts, configs, and the port records; convert en dashes, curly quotes, ellipsis glyphs, arrows, and section signs to ASCII; drop machine-writing tell phrases from living docs. ADR titles now use a colon. The M2 bring-up DTS model string carried an em dash into the patch series and its record echoes; fixed at both, and the full series re-verified to apply cleanly onto pristine 6.18.46. One comment in freshness.h deliberately names the em dash glyph the UI renders as the unknown mark; that is data, kept as prose naming it. Verified: cargo tests (sim, config-lint, rs485-bridge), shellcheck, both driver MC/DC harnesses, patches-apply.
1.5 KiB
PVTM (Process-Voltage-Temperature Monitor): VERIFIED on warden-c8a3 (2026-08-25)
Whole-driver port: mainline 6.18 has no rockchip pvtm driver; the vendor
drivers/soc/rockchip/rockchip_pvtm.c (GPL-2.0, 1046L) supports rv1106. Copied it in
include/linux/soc/rockchip/pvtm.h; KconfigROCKCHIP_PVTM+ Makefile;=y.
API-delta fixes (6.18)
struct thermal_zone_deviceis now opaque -> replacedpvtm->tz->ops->get_temp(...)with the publicthermal_zone_get_temp(pvtm->tz, &cur_temp).- added
#include <linux/of_device.h>forof_match_device(). - copied the vendor-only header
linux/soc/rockchip/pvtm.h.
The real blocker (why it first probed silently)
The vendor of_match_table wraps the rv1106 entries in #ifdef CONFIG_CPU_RV1106: a
vendor per-SoC symbol that does not exist in mainline. Result: devices
(ff240000.pvtm, ff390000.pvtm) were created + the driver registered, but the
compatibles were compiled out of the match table, so nothing bound and probe never
ran (no dmesg at all). Fix: drop the #ifdef CONFIG_CPU_RV1106 guard; our tree
only builds for rv1106, so the entries are unconditional. (Watch for this guard in any
other vendor driver ported by verbatim copy.)
Evidence
rockchip-pvtm ff240000.pvtm: pvtm@0 probed + ff390000.pvtm: pvtm@0 probed;
/sys/kernel/debug/pvtm/core/value = pvtm: 71682 90462,
/sys/kernel/debug/pvtm/pmu/value = pvtm: 35772 (ring-oscillator counts, the PVT
signal). Exports rockchip_get_pvtm_value() for future DVFS voltage margining.