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coffeecake: Set Unconstrained Power (aka Ext) bit on 5V PDO

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This bit needs to be set to allow Chromebooks to determine that the dock
is an externally powered DRP, so they'll try to charge from it instead of
sitting there with 5V 0A.

BRANCH=none
BUG=b:69056645
TEST=make buildall -j
Check that Chromebooks successfully charge from Coffee Cake.

Signed-off-by: Benson Leung <bleung@chromium.org>

Change-Id: I9b1f207d976ef55b4a3016ba35c99522d4d1fce6
Reviewed-on: https://chromium-review.googlesource.com/723979
Commit-Ready: Rong Chang <rongchang@chromium.org>
Tested-by: Rong Chang <rongchang@chromium.org>
Reviewed-by: Rong Chang <rongchang@chromium.org>
This commit is contained in:
Benson Leung
2017-10-17 11:33:46 -07:00
committed by chrome-bot
parent 6d2066aa39
commit e78174a0b5
1 changed files with 4 additions and 1 deletions
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5
board/coffeecake/usb_pd_policy.c
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@@ -23,6 +23,9 @@
#define CPRINTF(format, args...) cprintf(CC_USBPD, format, ## args)
#define CPRINTS(format, args...) cprints(CC_USBPD, format, ## args)
#define PDO_FIXED_FLAGS_EXT (PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP |\
PDO_FIXED_COMM_CAP | PDO_FIXED_EXTERNAL)
#define PDO_FIXED_FLAGS (PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP |\
PDO_FIXED_COMM_CAP)
@@ -37,7 +40,7 @@ enum volt_idx {
/* PDOs */
const uint32_t pd_src_pdo[] = {
[PDO_IDX_5V] = PDO_FIXED(5000, 3000, PDO_FIXED_FLAGS),
[PDO_IDX_5V] = PDO_FIXED(5000, 3000, PDO_FIXED_FLAGS_EXT),
[PDO_IDX_9V] = PDO_FIXED(9000, 3000, PDO_FIXED_FLAGS),
};
const int pd_src_pdo_cnt = ARRAY_SIZE(pd_src_pdo);