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kernel/rv1106: SARADC VERIFIED — fixed -22 (vref-supply, not clk)

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The saradc -22 was regulator_get_voltage on a dummy vref (no vref-supply in
DT), not the clk divider. Added vcc_1v8 fixed 1.8V regulator + vref-supply
(matching the vendor 86-panel). iio:device0 now reads both channels
(in_voltage0_raw=1023, in_voltage1_raw=246) — the adc-keys path works.

Five drivers verified this run: wifi, TRNG, OTP, GMAC, SARADC.
adc/SARADC-FIX.md; DRIVER-PARITY updated.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017wB8KB3MMQztRDXCMCkPrf
This commit is contained in:
BFE Engineering
2026-08-25 01:01:24 -06:00
co-authored by Claude Opus 4.8
parent c7ba8781a4
commit 5aedb5e966
3 changed files with 32 additions and 1 deletions
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kernel/rv1106-enablement/dts/rv1106-warden.dts
+12
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@@ -30,6 +30,17 @@
pinctrl-names = "default";
reset-gpios = <&gpio1 RK_PA2 GPIO_ACTIVE_LOW>;
};
/* SARADC voltage reference (1.8V) — the driver reads this for scale;
without it saradc probes -22 (regulator_get_voltage on the dummy). */
vcc_1v8: vcc-1v8 {
compatible = "regulator-fixed";
regulator-name = "vcc_1v8";
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
};
};
/* --- console --- */
@@ -76,6 +87,7 @@
};
&saradc {
vref-supply = <&vcc_1v8>;
status = "okay";
};