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imx233: update comment about vbusvalid

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Change-Id: Ice1ece716657fa7f78f69736e5e733e1b7f67b59
This commit is contained in:
Amaury Pouly 2017-08-27 15:55:01 +02:00
parent 7ce764cdc3
commit 5d2d747247
1 changed files with 3 additions and 2 deletions
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5
firmware/target/arm/imx233/power-imx233.c
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@ -129,8 +129,9 @@ static struct current_step_bit_t g_4p2_charge_limit_bits[] =
* Since we didn't encounter this problem, we never lock VBUSVALID
*
* WARNING
* Using VBUSVALID irq on STMP3700 seems broken, once the irq is fired,
* it cannot be acked. Currently fallback to the VDD5V>VDDIO method.
* Using VBUSVALID IRQ is broken on STMP3700 (see errata). The IRQ cannot be
* cleared. Currently fallback to the VDD5V>VDDIO method even though it's less
* reliable (we could use polling too).
*/
#if IMX233_SUBTARGET >= 3780
#define USE_VBUSVALID