The I2C reading in the PEX vs SATA detection code often fails on the first try. Try three times, as the code for EEPROM reading does.
Signed-off-by: Marek Behun marek.behun@nic.cz --- board/CZ.NIC/turris_omnia/turris_omnia.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/board/CZ.NIC/turris_omnia/turris_omnia.c b/board/CZ.NIC/turris_omnia/turris_omnia.c index 86926f8050..a4275091d2 100644 --- a/board/CZ.NIC/turris_omnia/turris_omnia.c +++ b/board/CZ.NIC/turris_omnia/turris_omnia.c @@ -90,7 +90,7 @@ static struct serdes_map board_serdes_map_sata[] = { static bool omnia_detect_sata(void) { struct udevice *bus, *dev; - int ret; + int ret, retry = 3; u16 mode;
puts("SERDES0 card detect: "); @@ -106,8 +106,13 @@ static bool omnia_detect_sata(void) return false; }
- ret = dm_i2c_read(dev, OMNIA_I2C_MCU_ADDR_STATUS, (uchar *) &mode, 2); - if (ret) { + for (; retry > 0; --retry) { + ret = dm_i2c_read(dev, OMNIA_I2C_MCU_ADDR_STATUS, (uchar *) &mode, 2); + if (!ret) + break; + } + + if (!retry) { puts("I2C read failed! Default PEX\n"); return false; }