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freescale: vid: Return i2c mux to default channel 

IR chip is on one of the channels on multiplexed I2C-bus.
Reset to default channel after accessing.

Signed-off-by: Wenbin Song <wenbin.song@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
This commit is contained in:
Wenbin Song 2016-03-09 13:38:23 +08:00 committed by York Sun
parent f8008f144b
commit 1be8d10be4
1 changed files with 9 additions and 3 deletions
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12
board/freescale/common/vid.c
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@ -454,6 +454,9 @@ int adjust_vdd(ulong vdd_override)
exit: exit:
if (re_enable) if (re_enable)
enable_interrupts(); enable_interrupts();
i2c_multiplexer_select_vid_channel(I2C_MUX_CH_DEFAULT);
return ret; return ret;
} }
@ -469,7 +472,7 @@ static int print_vdd(void)
ret = find_ir_chip_on_i2c(); ret = find_ir_chip_on_i2c();
if (ret < 0) { if (ret < 0) {
printf("VID: Could not find voltage regulator on I2C.\n"); printf("VID: Could not find voltage regulator on I2C.\n");
return -1; goto exit;
} else { } else {
i2caddress = ret; i2caddress = ret;
debug("VID: IR Chip found on I2C address 0x%02x\n", i2caddress); 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); vdd_last = read_voltage(i2caddress);
if (vdd_last < 0) { if (vdd_last < 0) {
printf("VID: Couldn't read sensor abort VID adjustment\n"); 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); 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, static int do_vdd_override(cmd_tbl_t *cmdtp,