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| author | Vincent Palatin <vpalatin@chromium.org> | 2013-02-13 09:51:36 -0800 |
|---|---|---|
| committer | ChromeBot <chrome-bot@google.com> | 2013-02-13 11:58:41 -0800 |
| commit | 92ceccbc4ba81ae077b2a41594d83dc125af0b46 (patch) | |
| tree | 08500730acec6c0f58bf0bc9c5a4de8aee2cd651 | |
| parent | 695289cfe6724ad349a96d1f36ddf036b3df5daa (diff) | |
| download | chrome-ec-92ceccbc4ba81ae077b2a41594d83dc125af0b46.tar.gz | |
tps65090: update LDOs configuration
Match the configuration on Snow :
- set overcurrent timeout to 3200us (max)
(to avoid triggering the protection on initial inrush current)
- properly enable the auto-discharge feature
(we need it when the LDOs are turned OFF)
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
BRANCH=none
BUG=chrome-os-partner:17790 chrome-os-partner:17804
TEST=on Spring, boot and dump the TPS65090 configuration from the EC
command line by using "pmu" command.
See 0x1f in registers 0x0f and 0x14 for LCD and Backlight LDOs.
Change-Id: I20b0cb11d7abb890e921816e75e8ed816ca4f2d4
Reviewed-on: https://gerrit.chromium.org/gerrit/43180
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Todd Broch <tbroch@chromium.org>
Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
| -rw-r--r-- | common/pmu_tps65090.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/common/pmu_tps65090.c b/common/pmu_tps65090.c index 7a587e1b21..cfb6ffd582 100644 --- a/common/pmu_tps65090.c +++ b/common/pmu_tps65090.c @@ -80,6 +80,7 @@ /* FET control register bits */ #define FET_CTRL_ENFET (1 << 0) #define FET_CTRL_ADENFET (1 << 1) +#define FET_CTRL_WAIT (3 << 2) /* Overcurrent timeout max : 3200 us */ #define FET_CTRL_PGFET (1 << 4) #define FET_CTRL_BASE (FET1_CTRL - 1) @@ -380,8 +381,9 @@ int pmu_enable_fet(int fet_id, int enable, int *power_good) rv = pmu_read(reg_offset, ®); if (rv) return rv; + reg |= FET_CTRL_ADENFET | FET_CTRL_WAIT; if (enable) - reg |= FET_CTRL_ADENFET | FET_CTRL_ENFET; + reg |= FET_CTRL_ENFET; else reg &= ~FET_CTRL_ENFET; |