IR chip is on one of the channels on multiplexed I2C-bus.
Reset to default channel after accessing.
Signed-off-by: Wenbin Song <wenbin.s...@nxp.com>
---
Changes for v2:
-Rework the commit message and the tag int the subject.
---
board/freescale/common/vid.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/board/freescale/common/vid.c b/board/freescale/common/vid.c
index 1bd65a8..a6a132a 100644
--- a/board/freescale/common/vid.c
+++ b/board/freescale/common/vid.c
@@ -454,6 +454,9 @@ int adjust_vdd(ulong vdd_override)
exit:
if (re_enable)
enable_interrupts();
+
+ i2c_multiplexer_select_vid_channel(I2C_MUX_CH_DEFAULT);
+
return ret;
}
@@ -469,7 +472,7 @@ static int print_vdd(void)
ret = find_ir_chip_on_i2c();
if (ret < 0) {
printf("VID: Could not find voltage regulator on I2C.\n");
- return -1;
+ goto exit;
} else {
i2caddress = ret;
debug("VID: IR Chip found on I2C address 0x%02x\n", i2caddress);
@@ -481,11 +484,14 @@ static int print_vdd(void)
vdd_last = read_voltage(i2caddress);
if (vdd_last < 0) {
printf("VID: Couldn't read sensor abort VID adjustment\n");
- return -1;
+ goto exit;
}
printf("VID: Core voltage is at %d mV\n", vdd_last);
+exit:
+ i2c_multiplexer_select_vid_channel(I2C_MUX_CH_DEFAULT);
+
+ return ret < 0 ? -1 : 0;
- return 0;
}
static int do_vdd_override(cmd_tbl_t *cmdtp,
--
2.1.0.27.g96db324
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