diff options
| author | Tom Hughes <tomhughes@chromium.org> | 2020-01-06 12:11:05 -0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-01-08 19:36:38 +0000 |
| commit | c7e46e446e593f89deee9d5ac7adc4eb691a7bd3 (patch) | |
| tree | 22e9ec249b989e5cdf842efb505e0b7f4ed287ef /docs/fingerprint | |
| parent | 9688812f8b7f01167e80dd37c28bc9f0a4a55534 (diff) | |
| download | chrome-ec-c7e46e446e593f89deee9d5ac7adc4eb691a7bd3.tar.gz | |
docs/fingerprint: Update Dragonclaw v0.2 rework instructions
Update Dragonclaw v0.2 rework instructions to account for second load
switch.
BRANCH=none
BUG=none
TEST=view in gitiles
Change-Id: I3cd609f62eca7f7a3aa8fd5a354f8df2cd09ca8c
Signed-off-by: Tom Hughes <tomhughes@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1988708
Reviewed-by: Craig Hesling <hesling@chromium.org>
Diffstat (limited to 'docs/fingerprint')
| -rw-r--r-- | docs/fingerprint/fingerprint-dev-for-partners.md | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/docs/fingerprint/fingerprint-dev-for-partners.md b/docs/fingerprint/fingerprint-dev-for-partners.md index 15cd6dc340..309a2f4333 100644 --- a/docs/fingerprint/fingerprint-dev-for-partners.md +++ b/docs/fingerprint/fingerprint-dev-for-partners.md @@ -423,12 +423,12 @@ From the DUT, flash the firmware you copied: ### Dragonclaw Rev 0.2 Rework {#dragonclaw-rev-0.2-rework} -Dragonclaw **Rev 0.2** has a switch to choose 1.8V from the servo connector or -motherboard connector (controlled by `SW1`). However, this switch is not -compatible with 1.8V, so will always output 0V. The switch can be bypassed by -placing a zero ohm resistor on `R14`. See the image below. After performing this -rework, do not power the board through the motherboard and servo at the same -time. +Dragonclaw **Rev 0.2** has two load switches (`U4` and `U6`) that enable the +1.8V power rail from the servo connector or motherboard connector. However, +this switch is not compatible with 1.8V, so will always output 0V. The switches +can be bypassed by placing a zero ohm resistor on `R14` and `R16`. See the image +below. After performing this rework, do not power the board through the +motherboard and servo at the same time. ![Dragonclaw Rev 0.2 1.8V Rework] @@ -536,5 +536,5 @@ https://crbug.com/992082. <!-- If you make changes to the docs below make sure to regenerate the JPEGs by appending "export/jpeg" to the Google Drive link. --> -<!-- https://docs.google.com/drawings/d/1i9YE3xcsBQRhSrBRP6zlFUSgN2i01Dk8mC2-Q_vvmmY --> +<!-- https://docs.google.com/drawings/d/1ecDewBXy8KecyPLi85sXcnqBh4KwK1Z8hfW_T2fDfUU --> [Dragonclaw Rev 0.2 1.8V Rework]: ../images/dragonclaw_rev_0.2_1.8v_rework.jpg |