[RESEND PATCH] board: ti: common: board_detect: Fix EEPROM offset read for 1-byte

Prasanth Babu Mantena p-mantena at ti.com
Fri Oct 20 09:01:28 CEST 2023


EEPROM detection logic in ti_i2c_eeprom_get() involves reading the total
size followed by reading 1-byte size with an offset 1. This commit fixes
the header matching issue in commit 9f393a2d7af8 ("board: ti: common:
board_detect: Fix EEPROM read quirk for 2-byte").

In the previous commit, the value with one offset is being read into
offset_test, but the pointer used to match was still ep. After reading
with an offset 1, the second byte of the header is compared with the 1-byte
data read from EEPROM. This is taken care by comparing proper first byte
value from the header.

Signed-off-by: Prasanth Babu Mantena <p-mantena at ti.com>
Fixes: 9f393a2d7af8 (board: ti: common: board_detect: Fix EEPROM read quirk for 2-byte)
---
Resending due to incorrect patch tag last time.

 board/ti/common/board_detect.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/board/ti/common/board_detect.c b/board/ti/common/board_detect.c
index 9a53884c98..17fe8f8069 100644
--- a/board/ti/common/board_detect.c
+++ b/board/ti/common/board_detect.c
@@ -128,7 +128,7 @@ static int __maybe_unused ti_i2c_eeprom_get(int bus_addr, int dev_addr,
 
 	rc = dm_i2c_read(dev, 0x1, &offset_test, sizeof(offset_test));
 
-	if (*((u32 *)ep) != (header & 0xFF))
+	if (offset_test != ((header >> 8) & 0xFF))
 		one_byte_addressing = false;
 
 	/* Corrupted data??? */
-- 
2.39.0



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