board: ti: common: board_detect: Fix EEPROM read quirk for 2-byte
EEPROM detection logic in ti_i2c_eeprom_get() involves figuring out whether addressing is 1-byte or 2-byte. There are currently different behaviours seen across boards as documented in commit bf637664 ("board: ti: common: board_detect: Fix EEPROM read quirk"). Adding to the list, we see that there are 2-byte EEPROMs that read properly with 1-byte addressing with no offset. For ti_i2c_eeprom_am6_get where eeprom parse operation is dynamic, the earlier commit d2ab2a2b ("board: ti: common: board_detect: Fix EEPROM read quirk for AM6 style data") tried to resolve this by running ti_i2c_eeprom_get() twice. However this commit along with its former commit fails on J7 platforms where EEPROM successfully return back the header on 1-byte addressing and continues to do so until an offset is introduced. So the second read incorrectly determines the EEPROM as 1-byte addressing. A more generic solution is introduced here to solve this issue: 1-byte read without offset and 1-byte read with offset. If both passes, it follows 1-byte addressing else we proceed with 2-byte addressing check. Tested on J721E, J7200, DRA7xx, AM64x Signed-off-by:Neha Malcom Francis <n-francis@ti.com> Fixes: d2ab2a2b (board: ti: common: board_detect: Fix EEPROM read quirk for AM6 style data) Fixes: bf637664 (board: ti: common: board_detect: Fix EEPROM read quirk) Tested-By:
Matwey V. Kornilov <matwey.kornilov@gmail.com>
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