cpu/nrf5x: also enable DCDC for REG0 if used

2021-01-20 12:41:32 +01:00 · 2021-01-20 12:41:32 +01:00 · 9d7a37a571
commit 9d7a37a571
parent 3a9f8d5851
1 changed files with 9 additions and 0 deletions
--- a/cpu/nrf5x_common/include/nrfx.h
+++ b/cpu/nrf5x_common/include/nrfx.h
@ -42,6 +42,15 @@ static inline void nrfx_dcdc_init(void)
 {
 #ifdef NRF5X_ENABLE_DCDC
    NRF_POWER->DCDCEN = 1;
+
+    /* on CPUs that support high voltage power supply via VDDH and thus use a
+     * two stage regulator, we also enable the DC/DC converter for the first
+     * state. */
+#ifdef POWER_MAINREGSTATUS_MAINREGSTATUS_High
+    if (NRF_POWER->MAINREGSTATUS == POWER_MAINREGSTATUS_MAINREGSTATUS_High) {
+        NRF_POWER->DCDCEN0 = 1;
+    }
+#endif
 #endif
 }