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docs: correct i2cdetect usage and ignore archived notes

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The engine exposes only SMBus BYTE_DATA/WORD_DATA, so i2cdetect (which
needs SMBus QUICK or READ_BYTE) cannot scan the bus. Replace the
misleading "i2cdetect -r/-y" scan instructions with a direct i2cget
byte-data read in the README, the cover letter and the smoke test.

Also gitignore the archived internal working documents
(docs/archive-*.md).

Signed-off-by: Simone Chifari <simone.chifari@gmail.com>
This commit is contained in:
Simone
2026-06-27 20:11:37 +02:00
parent fee48bba23
commit 3c86f6c866
4 changed files with 25 additions and 12 deletions
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docs/submission/cover-letter.txt
+3 -2
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@@ -89,8 +89,9 @@ on both read and write paths.
Since the hardware requires a register offset for every transaction,
I2C_SMBUS_QUICK and I2C_SMBUS_BYTE (which have no offset) are not supported
(returning -EOPNOTSUPP). Use `i2cdetect -r` (read byte data probe) to scan
for devices. Standard kernel drivers such as ee1004 (for DDR4 SPD) load
(returning -EOPNOTSUPP). For the same reason i2cdetect cannot scan the bus;
access a device directly with a byte-data read, e.g. `i2cget -y <bus> 0x50 0x02`
reads SPD byte 2. Standard kernel drivers such as ee1004 (for DDR4 SPD) load
and bind successfully via BYTE_DATA reads.
udev autoloads the module on PCI add event (MODULE_DEVICE_TABLE present).