| commit | 2f448dfa5c7e514241d04244f47474511a1386d8 | [log] [tgz] |
|---|---|---|
| author | Michael Schaffner <msf@opentitan.org> | Tue Jul 13 15:49:51 2021 -0700 |
| committer | Michael Schaffner <msf@google.com> | Wed Jul 14 10:32:42 2021 -0700 |
| tree | 16de00488c961a70b6ec72a9bfe115b083112032 | |
| parent | 0c6bac8e5df34691ffc7ecb06dd23b98be30db64 [diff] |
[pinmux] Always sample DFT mode straps only once at boot While it is useful for the TAP straps to be sampled continuously in DFT-enabled life cycle states such that test sequences can dynamically change between TAPs, this is not so much the case for the DFT-mode straps. I.e., from a test perspective it would be better if these DFT-mode straps were sampled only once such that the corresponding pins do not have to be constantly held at a specific value throughout the test sequence. This would also free them up such that they can be used as regular GPIOs. This commit changes the strap sampling logic accordingly. Signed-off-by: Michael Schaffner <msf@opentitan.org>
OpenTitan is an open source silicon Root of Trust (RoT) project. OpenTitan will make the silicon RoT design and implementation more transparent, trustworthy, and secure for enterprises, platform providers, and chip manufacturers. OpenTitan is administered by lowRISC CIC as a collaborative project to produce high quality, open IP for instantiation as a full-featured product. See the OpenTitan site and OpenTitan docs for more information about the project.
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