feat(es8311): add digital input gain and restore 42dB HW max for ES3C28P/35P

- Same as firmware: add input-gain-percent, 42dB HW max, digital multiplier
2026-07-31 12:11:13 -04:00
parent d8c5a55fe8
commit 7788415e0e
5 changed files with 34 additions and 4 deletions
@@ -9,3 +9,7 @@ properties:
    type: phandle
    required: true
    description: "I2S controller device that carries audio data"
+  input-gain-percent:
+    type: int
+    default: 100
+    description: "Extra digital gain multiplier applied by audio_stream on top of the ES8311's own 24dB hardware ADC gain, as an integer percentage (100 = 1.0x / no extra boost). For quiet MEMS mic capsules that are still quiet even at max hardware gain."