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| author | Aseda Aboagye <aaboagye@google.com> | 2020-03-10 11:09:26 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-03-12 02:32:39 +0000 |
| commit | 6f186aaa6960f1902ae5b6964ab3dd4e1df26dce (patch) | |
| tree | f1fc12ba784ec0297fb61c6e4d78cf854e0b4e83 | |
| parent | 326d9a6fa33942aff01b602e96bad6fedd7f48a9 (diff) | |
| download | chrome-ec-6f186aaa6960f1902ae5b6964ab3dd4e1df26dce.tar.gz | |
raa489000: Choose charge port if VBUS present @ init
Per the vendor, we need to starting sinking VBUS before writing to the
Role control register, otherwise the ASGATE turns off. This commit
checks to see if VBUS is present on a port at init time and no other
charge port has been selected in order to keep the ASGATE turned on.
BUG=b:150702984
BRANCH=None
TEST=build and flash waddledoo, verify that VSYS remains up.
Change-Id: I00957f7588f503551223d16969785198e1a9fd48
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2097136
Reviewed-by: Diana Z <dzigterman@chromium.org>
Commit-Queue: Aseda Aboagye <aaboagye@chromium.org>
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
| -rw-r--r-- | driver/tcpm/raa489000.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/driver/tcpm/raa489000.c b/driver/tcpm/raa489000.c index dec9313fba..f311252843 100644 --- a/driver/tcpm/raa489000.c +++ b/driver/tcpm/raa489000.c @@ -5,6 +5,7 @@ * Renesas RAA489000 TCPC driver */ +#include "charge_manager.h" #include "common.h" #include "console.h" #include "driver/charger/isl923x.h" @@ -21,6 +22,7 @@ int raa489000_init(int port) int rv; int regval; int i2c_port; + struct charge_port_info chg = { 0 }; /* Perform unlock sequence */ rv = tcpc_write16(port, 0xAA, 0xDAA0); @@ -111,6 +113,20 @@ int raa489000_init(int port) if (rv) CPRINTS("c%d: failed to set TCPCIv1.0 mode", port); + /* + * If VBUS is present, start sinking from it if we haven't already + * chosen a charge port. This is *kinda hacky* doing it here, but we + * must start sinking VBUS now, otherwise the board may die if there is + * no battery connected. (See b/150702984) + */ + if (pd_snk_is_vbus_provided(port) && + charge_manager_get_active_charge_port() == CHARGE_PORT_NONE) { + chg.current = 500; + chg.voltage = 5000; + charge_manager_update_charge(CHARGE_SUPPLIER_VBUS, port, &chg); + board_set_active_charge_port(port); + } + return rv; } |