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mvebu: turris_omnia: Fix PEX vs SATA detection for board topology

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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>
Signed-off-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Marek Behún 2017-08-04 15:28:25 +02:00 committed by Stefan Roese
parent eaa90e5df2
commit 8daa3468b5
1 changed files with 8 additions and 3 deletions
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11
board/CZ.NIC/turris_omnia/turris_omnia.c
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@ -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;
}