openwrt / openwrt/mt76

does mt76x2_eeprom contain invalid values?

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Dominant language
C
Stars
888
Forks
436
PR merge metrics
No merged PRs in 30d

Description

looking at the code i see there is quite some defines missing, and some are possibly wrong!

for example:

MT_EE_LNA_GAIN =          0x044,
MT_EE_RSSI_OFFSET_2G_0 =        0x046,
MT_EE_RSSI_OFFSET_2G_1 =        0x048,
MT_EE_RSSI_OFFSET_5G_0 =        0x04a,
MT_EE_RSSI_OFFSET_5G_1 =        0x04c,

this would mean the data for chain 0 are not read since in my factory eeprom this field is 00. it is also wrong name RSSI_OFFSET for what the driver assumes it works with but it should be renamed to LNA_GAIN

according to MT7612E EEPROM content guideline

it should be:

MT_EE_LNA_GAIN_2G =           0x044,
MT_EE_LNA_GAIN_5G_GROUP1 =      0x045,
MT_EE_RSSI_OFFSET_2G_0 =        0x046,
MT_EE_RSSI_OFFSET_2G_1 =        0x047,
MT_EE_LNA_GAIN_5G_GROUP2 =      0x049,
MT_EE_RSSI_OFFSET_5G_0 =        0x04a,
MT_EE_RSSI_OFFSET_5G_1 =        0x04b,
MT_EE_LNA_GAIN_5G_GROUP3 =      0x04d,

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the mt76x2_eeprom definitions and the code that reads MT_EE_LNA_GAIN and RSSI offset fields. Compare those offsets and names with the MT7612E EEPROM content guideline and the examples in the issue. Done means the definitions match the documented layout and the driver reads the intended chain and band values.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
embedded-iot, operating-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
32/100

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