BFE EngineeringandClaude Fable 5
5155224594
Preparing the repo to go public (ADR-0007): - CI: kernel-build moves from the self-hosted runner to ubuntu-latest (installs its own cross toolchain + qemu, caches the pristine tarball). On a public repo a registered self-hosted runner is reachable from approved fork-PR workflows — i.e. arbitrary code on private infrastructure — and the build never actually needed the SDK host. ADR-0004 marked superseded-in-part; docs/ci-cd.md rewritten (site specifics now live only in the private deployment log). - Licensing: LICENSE gains the GPL-2.0 carve-out for patches/ and the kernel source excerpts (Linux derivatives; per-driver provenance was already tracked in PROVENANCE.md); patches/README.md states it too. - Scrubbed from the tip: bench-unit dev credentials and its gadget IP (m2-boot notes), the site AP SSID+BSSID and a neighboring AP's BSSID and the device WLAN MAC (wifi bring-up evidence — BSSIDs are geolocatable), the runner mesh IP. NOTE: these remain in git history; decision on a pre-publication history rewrite is separate. - Emoji cleanup across 21 tracked files (kernel port docs, review report, enforce-mcdc.sh) per repo text conventions: status marks became [x]/[wip]/[ ]/OK plain text. - "[maintainer]-gated" process phrasing normalized to "maintainer-gated" (attributions in dated evidence docs kept). Verified: zero emojis tracked; scrub grep clean; patches carry no internal references; ci.yml parses; shellcheck unchanged. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_018HUayid7W5w7jBdb9Rrj1K
20 lines
1.1 KiB
Markdown
20 lines
1.1 KiB
Markdown
# SARADC — VERIFIED on warden-c8a3 (2026-08-25); the -22 was vref, not clk
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The rockchip_saradc probe failed `-22` NOT at clk_set_rate (no "failed to set
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adc clk rate" ever printed) but at `regulator_get_voltage(info->vref)` — with no
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`vref-supply` in DT the driver got a **dummy** regulator, and
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`regulator_get_voltage(dummy)` returns -EINVAL, which probe returns directly (so
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only the generic "probe failed with error -22" showed). The earlier
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clk-rv1106-divider theory was wrong (the divider is HIWORD settable, xin24m is
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registered; clk_set_rate would clamp, not fail).
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**Fix (DT only):** add the 1.8 V reference the vendor 86-panel uses —
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```dts
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/ { vcc_1v8: vcc-1v8 { compatible = "regulator-fixed"; regulator-name = "vcc_1v8";
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regulator-always-on; regulator-boot-on;
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regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; }; };
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&saradc { vref-supply = <&vcc_1v8>; status = "okay"; };
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```
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**Evidence:** `iio:device0` (`ff3c0000.saradc`), `in_voltage0_raw=1023`,
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`in_voltage1_raw=246` — both channels read real analog values (the adc-keys path).
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