On 08/25/2015 01:30 AM, shh.xie@gmail.com wrote:
From: Shaohui Xie Shaohui.Xie@freescale.com
A U-boot CMD vdd_read is implemented to read Core voltage.
Signed-off-by: Shaohui Xie Shaohui.Xie@freescale.com
board/freescale/t4qds/t4240qds.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+)
diff --git a/board/freescale/t4qds/t4240qds.c b/board/freescale/t4qds/t4240qds.c index 4f2cccd..56273e4 100644 --- a/board/freescale/t4qds/t4240qds.c +++ b/board/freescale/t4qds/t4240qds.c @@ -887,8 +887,38 @@ static int do_vdd_adjust(cmd_tbl_t *cmdtp, return 0; }
+static int do_vdd_read(cmd_tbl_t *cmdtp,
int flag, int argc,char * const argv[])+{
- int vdd, ret;
- if (argc < 1)
return CMD_RET_USAGE;- ret = select_i2c_ch_pca9547(I2C_MUX_CH_VOL_MONITOR);
- if (ret) {
printf("VID: I2c failed to switch channel\n");return 0;- }
- vdd = read_voltage();
- if (vdd < 0)
printf("VID: Could not read voltage\n");- else
printf("VID: Core voltage is at %d mV\n", vdd);- return 0;
+}
U_BOOT_CMD( vdd_override, 2, 0, do_vdd_adjust, "Override VDD", "- override with the voltage specified in mV, eg. 1050" );
+U_BOOT_CMD(
- vdd_read, 1, 0, do_vdd_read,
- "read VDD",
- " - Read the voltage specified in mV"
+)
Can you explain why you need this command? You already get the voltage if you run bdinfo. If you override vdd, you also get a print.
York