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bootloader: Only apply VDDSDIO 1.8V->1.9V if regulator is enabled

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Fixes bug if regulator is disabled via efuse.
This commit is contained in:
Angus Gratton
2017-11-27 10:33:41 +11:00
committed by Angus Gratton
parent 75ff6dce15
commit fccc30d2d5
2 changed files with 5 additions and 4 deletions
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3
components/bootloader/subproject/main/bootloader_start.c
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@@ -745,12 +745,11 @@ static void vddsdio_configure()
{
#if CONFIG_BOOTLOADER_VDDSDIO_BOOST
rtc_vddsdio_config_t cfg = rtc_vddsdio_get_config();
if (cfg.tieh == 0) { // 1.8V is used
if (cfg.enable == 1 && cfg.tieh == 0) { // VDDSDIO regulator is enabled @ 1.8V
cfg.drefh = 3;
cfg.drefm = 3;
cfg.drefl = 3;
cfg.force = 1;
cfg.enable = 1;
rtc_vddsdio_set_config(cfg);
ets_delay_us(10); // wait for regulator to become stable
}