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rk3288: disable rk808 DCDC_UV_ACT_REG restart converter function

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if DCDC_UV_ACT_REG setted, when the buck voltage drop to 85%,
rk808 will reset this buck, but now when the current consumption large,
rk808 may miscarriage of justice this status, so we must disable this function

BUG=chrome-os-partner:34834
TEST=Boot from jerry, and do RUNIN test sucess
BRANCH=None

Change-Id: I46ebe332c576eebd3386b5042b146a8b57a5c194
Signed-off-by: huang lin <hl@rock-chips.com>
Reviewed-on: https://chromium-review.googlesource.com/254496
Commit-Queue: Julius Werner <jwerner@chromium.org>
Tested-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
(cherry picked from commit 858c8abc11a824fc3d991a39a49710243f4b1473)
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/255976
This commit is contained in:
huang lin 2015-02-27 19:35:04 -08:00 • committed by ChromeOS Commit Bot
commit fefe006021
1 changed files with 5 additions and 0 deletions
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5
src/soc/rockchip/rk3288/rk808.c
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@ -54,6 +54,7 @@
#define RTC_CTRL_GET_TIME (1 << 6)
#define RTC_CTRL_RTC_READSEL (1 << 7)
#define DCDC_UV_ACT 0x28
#define DCDC_ILMAX 0x90
static int rk808_read(uint8_t reg, uint8_t *value)
@ -134,6 +135,10 @@ void rk808_configure_buck(int buck, int millivolts)
die("Unknown buck index!");
}
rk808_clrsetbits(DCDC_ILMAX, 0, 3 << ((buck - 1) * 2));
/* undervoltage detection may be wrong, disable it */
rk808_clrsetbits(DCDC_UV_ACT, 1 << (buck - 1), 0);
rk808_clrsetbits(buck_reg, 0x3f, vsel);
rk808_clrsetbits(DCDC_EN, 0, 1 << (buck - 1));
}