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authorhuang lin <hl@rock-chips.com>2015-02-27 19:35:04 -0800
committerPatrick Georgi <pgeorgi@google.com>2015-04-21 08:19:21 +0200
commit3704e69e472d68e52c9e8a64b648fbf80f6e0e63 (patch)
treec5e39bd0b6e40b16547ac37c5f722f528aa6aebc /src
parent19ee1569f6d411d26111afc0552e6a11178e1890 (diff)
downloadcoreboot-3704e69e472d68e52c9e8a64b648fbf80f6e0e63.tar.xz
rk3288: disable rk808 DCDC_UV_ACT_REG restart converter function
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: I08cef73b88d6c2722b389c632c7db29605f4545d Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 858c8abc11a824fc3d991a39a49710243f4b1473 Original-Change-Id: I46ebe332c576eebd3386b5042b146a8b57a5c194 Original-Signed-off-by: huang lin <hl@rock-chips.com> Original-Reviewed-on: https://chromium-review.googlesource.com/254496 Original-Commit-Queue: Julius Werner <jwerner@chromium.org> Original-Tested-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-on: http://review.coreboot.org/9831 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src')
-rw-r--r--src/soc/rockchip/rk3288/rk808.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/soc/rockchip/rk3288/rk808.c b/src/soc/rockchip/rk3288/rk808.c
index d375f46483..b922d81c77 100644
--- a/src/soc/rockchip/rk3288/rk808.c
+++ b/src/soc/rockchip/rk3288/rk808.c
@@ -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));
}