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cmd: date: rtc: Update command to read the first RTC with seq 0

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RTCs are using sequence number defined in aliases node. Date command with
DM_RTC enabled is looking for the first RTC with index 0. But when
RTC_EMULATION is enabled it gets likely most of the time index 0 even when
system has rtc0 device via aliases node and gets sequence number 0.
That's why extend the code to look for sequence 0 number first. If this
fails continue to use existing device with index 0.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
Michal Simek
2021-07-29 12:59:12 +02:00
parent 23a328769a
commit a1ae55ee7f
1 changed files with 6 additions and 3 deletions
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9
cmd/date.c
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@@ -41,10 +41,13 @@ static int do_date(struct cmd_tbl *cmdtp, int flag, int argc,
#ifdef CONFIG_DM_RTC
struct udevice *dev;
rcode = uclass_get_device(UCLASS_RTC, 0, &dev);
rcode = uclass_get_device_by_seq(UCLASS_RTC, 0, &dev);
if (rcode) {
printf("Cannot find RTC: err=%d\n", rcode);
return CMD_RET_FAILURE;
rcode = uclass_get_device(UCLASS_RTC, 0, &dev);
if (rcode) {
printf("Cannot find RTC: err=%d\n", rcode);
return CMD_RET_FAILURE;
}
}
#elif defined(CONFIG_SYS_I2C_LEGACY)
old_bus = i2c_get_bus_num();