diff options
| author | Sam Hurst <shurst@google.com> | 2020-05-06 08:51:08 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-05-21 04:56:46 +0000 |
| commit | 61efe94f1e1ca1ebbd7c49ed9bd1bcfe8948e7f0 (patch) | |
| tree | d4484be2e69c78dcb8369be447b0b139ba147ef0 /docs | |
| parent | c92f3d36f70a551e3df442cc7e015000f73f0578 (diff) | |
| download | chrome-ec-61efe94f1e1ca1ebbd7c49ed9bd1bcfe8948e7f0.tar.gz | |
TCPMv2: Only include PD3.0 functionality when CONFIG_USB_PD_REV30
The TCPMv2 stack defaults to PD2.0 functionality. Defining
CONFIG_USB_PD_REV30 enables PD3.0 functionality.
BUG=b:155879504
BRANCH=none
TEST=make -j buildall
Manual tests:
passed FAFT_PD running on kohaku
Before patch:
*** 18624 bytes in flash and 29216 bytes in RAM on kohaku RO ****
*** 18544 bytes in flash and 29216 bytes in RAM on kohaku RW ****
After patch:
*** 23320 bytes in flash and 30336 bytes in RAM on kohaku RO ****
*** 23228 bytes in flash and 30336 bytes in RAM on kohaku RW ****
Flash savings of 4696 bytest
Ram savings of 1120
Signed-off-by: Sam Hurst <shurst@google.com>
Change-Id: I082cf62617a91b487d2d3567afd5e340bd52258c
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2184547
Reviewed-by: Jett Rink <jettrink@chromium.org>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/usb-tcpmv2.md | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/docs/usb-tcpmv2.md b/docs/usb-tcpmv2.md index d80eb677a7..0afd07c3e6 100644 --- a/docs/usb-tcpmv2.md +++ b/docs/usb-tcpmv2.md @@ -14,6 +14,7 @@ Boards may enable TCPMv2 by adding the following defines: * `CONFIG_USB_DRP_ACC_TRYSRC`: Configures the type of state machine to run (in this case, a DRP which performs Try.SRC behavior). Currently available are DRP and charge-through Vconn-powered device options * `CONFIG_USB_PD_DECODE_SOP`: Sets up messaging for SOP’ and SOP’’, which is strongly encouraged in the TCPMv2 code moving forward * `CONFIG_USB_PID 0x1234`: Sets the USB Product Identifier. This will be shared for all boards within one reference design, and new PIDs may be requested by sending an email to the ChromeOS FW Team. +* `CONFIG_USB_PD_REV30`: The TCPMv2 stack defaults to PD2.0 operation but defining this macro enables PD3.0 functionality. Other configurations to specify behaviors within the task still apply (ex. `CONFIG_USB_PD_ALT_MODE_DFP` and `CONFIG_USB_PD_TCPC_LOW_POWER`). |