1 files changed, 34 insertions, 12 deletions

diff --git a/board/ti/common/board_detect.c b/board/ti/common/board_detect.c
index c37629f..9a53884 100644
--- a/board/ti/common/board_detect.c
+++ b/board/ti/common/board_detect.c
@@ -87,6 +87,8 @@ static int __maybe_unused ti_i2c_eeprom_get(int bus_addr, int dev_addr,
 					    u32 header, u32 size, uint8_t *ep)
 {
 	int rc;
+	uint8_t offset_test;
+	bool one_byte_addressing = true;
 
 #if CONFIG_IS_ENABLED(DM_I2C)
 	struct udevice *dev;
@@ -114,8 +116,23 @@ static int __maybe_unused ti_i2c_eeprom_get(int bus_addr, int dev_addr,
 	 */
 	(void)dm_i2c_read(dev, 0, ep, size);
 
+	if (*((u32 *)ep) != header)
+		one_byte_addressing = false;
+
+	/*
+	 * Handle case of bad 2 byte eeproms that responds to 1 byte addressing
+	 * but gets stuck in const addressing when read requests are performed
+	 * on offsets. We perform an offset test to make sure it is not a 2 byte
+	 * eeprom that works with 1 byte addressing but just without an offset
+	 */
+
+	rc = dm_i2c_read(dev, 0x1, &offset_test, sizeof(offset_test));
+
+	if (*((u32 *)ep) != (header & 0xFF))
+		one_byte_addressing = false;
+
 	/* Corrupted data??? */
-	if (*((u32 *)ep) != header) {
+	if (!one_byte_addressing) {
 		/*
 		 * read the eeprom header using i2c again, but use only a
 		 * 2 byte address (some newer boards need this..)
@@ -151,8 +168,23 @@ static int __maybe_unused ti_i2c_eeprom_get(int bus_addr, int dev_addr,
 	 */
 	(void)i2c_read(dev_addr, 0x0, byte, ep, size);
 
+	if (*((u32 *)ep) != header)
+		one_byte_addressing = false;
+
+	/*
+	 * Handle case of bad 2 byte eeproms that responds to 1 byte addressing
+	 * but gets stuck in const addressing when read requests are performed
+	 * on offsets. We perform an offset test to make sure it is not a 2 byte
+	 * eeprom that works with 1 byte addressing but just without an offset
+	 */
+
+	rc = i2c_read(dev_addr, 0x1, byte, &offset_test, sizeof(offset_test));
+
+	if (*((u32 *)ep) != (header & 0xFF))
+		one_byte_addressing = false;
+
 	/* Corrupted data??? */
-	if (*((u32 *)ep) != header) {
+	if (!one_byte_addressing) {
 		/*
 		 * read the eeprom header using i2c again, but use only a
 		 * 2 byte address (some newer boards need this..)
@@ -444,16 +476,6 @@ int __maybe_unused ti_i2c_eeprom_am6_get(int bus_addr, int dev_addr,
 	if (rc)
 		return rc;
 
-	/*
-	 * Handle case of bad 2 byte eeproms that responds to 1 byte addressing
-	 * but gets stuck in const addressing when read requests are performed
-	 * on offsets. We re-read the board ID to ensure we have sane data back
-	 */
-	rc = ti_i2c_eeprom_get(bus_addr, dev_addr, TI_EEPROM_HEADER_MAGIC,
-			       sizeof(board_id), (uint8_t *)&board_id);
-	if (rc)
-		return rc;
-
 	if (board_id.header.id != TI_AM6_EEPROM_RECORD_BOARD_ID) {
 		pr_err("%s: Invalid board ID record!\n", __func__);
 		return -EINVAL;