[PATCH] ti: common: Remove additional i2c read for board detection
Michal Simek
michal.simek at xilinx.com
Thu Aug 27 15:43:48 CEST 2020
There shouldn't be a need to call additional i2c read if above failed
already. Based on comment it should be enough to try to detect legacy
boards which are mentioned in the comment.
Fixes: 2463f6728e82 ("ti: common: board_detect: Allow DM I2C without CONFIG_DM_I2C_COMPAT")
Fixes: 0bea813d0018 ("ARM: omap-common: Add standard access for board description EEPROM")
Signed-off-by: Michal Simek <michal.simek at xilinx.com>
---
Found based on reading the code. Untested on HW but also not explain why
additional same read should be called again.
---
board/ti/common/board_detect.c | 18 ++++++------------
1 file changed, 6 insertions(+), 12 deletions(-)
diff --git a/board/ti/common/board_detect.c b/board/ti/common/board_detect.c
index e09ecda4d7e6..8b3b4bc82539 100644
--- a/board/ti/common/board_detect.c
+++ b/board/ti/common/board_detect.c
@@ -113,18 +113,15 @@ static int __maybe_unused ti_i2c_eeprom_get(int bus_addr, int dev_addr,
/* Corrupted data??? */
if (hdr_read != header) {
- rc = dm_i2c_read(dev, 0, (uint8_t *)&hdr_read, 4);
/*
* read the eeprom header using i2c again, but use only a
* 1 byte address (some legacy boards need this..)
*/
- if (rc) {
- rc = i2c_set_chip_offset_len(dev, 1);
- if (rc)
- return rc;
+ rc = i2c_set_chip_offset_len(dev, 1);
+ if (rc)
+ return rc;
- rc = dm_i2c_read(dev, 0, (uint8_t *)&hdr_read, 4);
- }
+ rc = dm_i2c_read(dev, 0, (uint8_t *)&hdr_read, 4);
if (rc)
return rc;
}
@@ -153,16 +150,13 @@ static int __maybe_unused ti_i2c_eeprom_get(int bus_addr, int dev_addr,
/* Corrupted data??? */
if (hdr_read != header) {
- rc = i2c_read(dev_addr, 0x0, byte, (uint8_t *)&hdr_read, 4);
/*
* read the eeprom header using i2c again, but use only a
* 1 byte address (some legacy boards need this..)
*/
byte = 1;
- if (rc) {
- rc = i2c_read(dev_addr, 0x0, byte, (uint8_t *)&hdr_read,
- 4);
- }
+ rc = i2c_read(dev_addr, 0x0, byte, (uint8_t *)&hdr_read,
+ 4);
if (rc)
return rc;
}
--
2.28.0
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