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author | Tom Hughes <tomhughes@chromium.org> | 2021-01-26 10:38:55 -0800 |
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committer | Commit Bot <commit-bot@chromium.org> | 2021-01-28 16:38:57 +0000 |
commit | 2f40b71b625bcd826fd0cb4a005985abef0b8903 (patch) | |
tree | 1f67563e6de1dc64fd4d40bb50ea70d2a17d18a7 /docs/usb_power.md | |
parent | 4e950b9fde9e5d7197d2558f7a36bc809e193a49 (diff) | |
download | chrome-ec-2f40b71b625bcd826fd0cb4a005985abef0b8903.tar.gz |
docs: Run mdformat on all .md files
BRANCH=none
BUG=b:178648877
TEST=view in gitiles
Signed-off-by: Tom Hughes <tomhughes@chromium.org>
Change-Id: I0ac5581ba7bc512234d40dbf34222422afa9c725
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2650551
Reviewed-by: Jack Rosenthal <jrosenth@chromium.org>
Diffstat (limited to 'docs/usb_power.md')
-rw-r--r-- | docs/usb_power.md | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/docs/usb_power.md b/docs/usb_power.md index 860e7fe589..acdbd47269 100644 --- a/docs/usb_power.md +++ b/docs/usb_power.md @@ -139,8 +139,8 @@ in-depth information can be found in the [USB Type-C Specification] \(section and is not present in the codebase currently. ChromeOS devices currently source power to external USB devices at 5V with a -typical current of 1.5A for each Type-C port. In certain scenarios, a -Type-C port can source up to 3A @ 5V. +typical current of 1.5A for each Type-C port. In certain scenarios, a Type-C +port can source up to 3A @ 5V. ChromeOS prefers that the first PD-capable Type-C device **that requires 3A** should get 3A guaranteed at 5V. Once the maximum supported number of PD-capable @@ -149,15 +149,15 @@ offered a maximum of 1.5A. If there are no PD-capable Type-C devices requiring 3A, then the first non-PD device will be given 3A until a PD-capable device **that requires 3A** is -inserted. Devices will indicate they require 3A in their sink capabilities, -and this will be used as the trigger to let the EC know to offer that port a -3A source contract. This policy is laid out in the following flow chart. +inserted. Devices will indicate they require 3A in their sink capabilities, and +this will be used as the trigger to let the EC know to offer that port a 3A +source contract. This policy is laid out in the following flow chart. ![Partner Attach](images/usb_power_on_attach.png "Partner Attach") When a device that is currently claiming 3A is removed, then the next oldest -PD-capable device is offered 3A. If no PD-capable devices require 3A, -then the oldest non-PD capable device is given 3A through a CC resistor change. +PD-capable device is offered 3A. If no PD-capable devices require 3A, then the +oldest non-PD capable device is given 3A through a CC resistor change. ![Partner Detach](images/usb_power_on_detach.png "Partner Detach") @@ -202,7 +202,7 @@ with a board with a maximum number of 1 3A-ports supported: * Since this is a PD device, query its operational current through requesting Sink Capabilities. * Tablet would like 3A, but the board has reached its maximum number of - supported 3A ports. Note this port's desired current for later. + supported 3A ports. Note this port's desired current for later. * Current state: `keyboard @ 1.5A` and `mouse @ 1.5A` and `dock @ 1.5A` and `phone @ 3A` and `tablet @ 1.5A`. 7. The PD-capable phone is removed @@ -217,11 +217,11 @@ with a board with a maximum number of 1 3A-ports supported: change. * Current state: `keyboard @ 3A` and `mouse @ 1.5A` and `dock @ 1.5A` 9. The non-PD capable keyboard is removed - * The next oldest PD-capable device requiring 3A is offered 3A.. If there - are no PD-capable devices requiring 3A, then the next oldest non-PD capable - device is given 3A. - * The dock only requires 1.5A, so mouse is given 3A via CC - resistor change. + * The next oldest PD-capable device requiring 3A is offered 3A.. If there + are no PD-capable devices requiring 3A, then the next oldest non-PD + capable device is given 3A. + * The dock only requires 1.5A, so mouse is given 3A via CC resistor + change. * Current state: `mouse @ 3A` and `dock @ 1.5A`. 10. The non-PD capable mouse is removed * The dock does not require 3A. |