imx233: don"t be smart when waiting for voltage stabilisation

Unfortunately the hardware is not very helpful when changing voltage: in DCDC
mode we have the DC_OK_IRQ but in linear regulator mode, the only available
bit doesn't work when lowering the voltages. At the moment, simply sleep for a
little while before a better solution is found.

Change-Id: I89335873e9e42e5c6e9131f40db7839b008c021c

1 files changed, 1 insertions, 7 deletions

diff --git a/firmware/target/arm/imx233/power-imx233.c b/firmware/target/arm/imx233/power-imx233.c
index 9ad8734823..0a4482fa08 100644
--- a/firmware/target/arm/imx233/power-imx233.c
+++ b/firmware/target/arm/imx233/power-imx233.c
@@ -383,13 +383,7 @@ void imx233_power_set_regulator(enum imx233_regulator_t reg, unsigned value_mv,
      * Otherwise it is unreliable (doesn't work when lowering voltage on linregs)
      * It usually takes between 0.5ms and 2.5ms */
 #if IMX233_SUBTARGET >= 3700
-    if(!BF_RD(POWER_5VCTRL, ENABLE_DCDC))
-        panicf("regulator %d: wait for voltage stabilize in linreg mode !", reg);
-    unsigned timeout = current_tick + (HZ * 20) / 1000;
-    while(!BF_RD(POWER_CTRL, DC_OK_IRQ) || !TIME_AFTER(current_tick, timeout))
-        yield();
-    if(!BF_RD(POWER_CTRL, DC_OK_IRQ))
-        panicf("regulator %d: failed to stabilize", reg);
+    sleep(1);
 #else
     if(!BF_RD(POWER_5VCTRL, EN_DCDC1) || !BF_RD(POWER_5VCTRL, EN_DCDC2))
         panicf("regulator %d: wait for voltage stabilize in linreg mode !", reg);