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.
2.0 KiB
TRNG + OTP port (batch A): 6.18
TRNG (hardware RNG): VERIFIED on warden-c8a3 (2026-08-25)
rv1106's rockchip,trngv1 is the same standalone TRNG_V1 IP as rk3588 (identical
register map). Mainline drivers/char/hw_random/rockchip-rng.c already drives it.
Delta: one OF-table entry reusing rk3588_soc_data:
{ .compatible = "rockchip,rv1106-rng", .data = (void *)&rk3588_soc_data },
(The driver grabs clocks via clk_bulk_get_all and treats reset as optional, so
rv1106's clock/reset names need no special handling.) Kconfig
HW_RANDOM_ROCKCHIP=y (already set).
DT (rv1106-warden.dts): override the dtsi rng@ff448000 node:
&rng { compatible = "rockchip,rv1106-rng"; status = "okay"; };
Evidence: /dev/hwrng present, rng_current = rockchip-rng,
dd if=/dev/hwrng bs=16 -> c697 503d f9db 6b84 50e4 e1ee f232 b2ae (real HW
entropy, non-zero). Hardware entropy source for the panel's crypto/keys.
OTP / nvmem: VERIFIED on warden-c8a3 (2026-08-25)
Reads real data: dd .../rockchip-otp0/nvmem bs=1 count=16 | xxd ->
5211 02fe 084d 5231 0000 0000 3b15 0000 (contains "MR1" chip id), no timeout.
Mainline drivers/nvmem/rockchip-otp.c gains an rv1106_data + compatible.
Delta:
static const char * const rv1106_otp_clocks[] = {
"usr", "sbpi", "apb", "phy", "arb", "pmc", /* matches DT clock-names */
};
static const struct rockchip_data rv1106_data = {
.size = 0x80,
.clks = rv1106_otp_clocks,
.num_clks = ARRAY_SIZE(rv1106_otp_clocks),
.reg_read = px30_otp_read, /* user-mode OTPC_USER interface */
};
/* OF: { "rockchip,rv1106-otp", &rv1106_data } */
Kconfig NVMEM_ROCKCHIP_OTP=y. DT: &otp { status = "okay"; }; (the dtsi
otp@ff3d0000 node already carries compatible + the 6 clocks/resets).
First try used .reg_read = rk3588_otp_read -> timeout during read setup
(rk3588 uses a different addressing path). Corrected to px30_otp_read: the
mainline user-mode OTPC_USER read, the same sequence the vendor 5.10 driver used
for rv1106 (its rk3568_otp_read). Confirmed: cell reads return real data.