jesultra

[pinmux] Earl Grey open drain and pullup

3

### Description With Z1 silicon, I am observing that if I enable od_en on pin R7, then it seems that the chip also enables internal pullup, no matter how I...

[spi_host] Control of WP and HOLD for single- and dual-lane modes

1

### Description The spi_host supports single, dual or quad mode transfers. When quad mode is achieved by using WP and HOLD signals for D2 and D3, and for such transactions,...

Introduce means for users of opentitanlib to declare that for a period, no other users will be simultaneously accessing the same debugger device, allowing the driver to keep USB handles...

[usbdev] Race condition, SETUP packets

8

### Description The documentation says the following about the [configin . rdy](https://opentitan.org/book/hw/ip/usbdev/doc/registers.html#configin--rdy) bit: > This bit should be set to indicate the buffer is ready for sending. It will be...

[opentitantool] Improvement to HyperDebug firmware upgrade

1

Firmware upgrading of HyperDebug requires entering and leaving "DFU mode", each of which involves resetting connection with the USB device. Previous code waited one second for the device to reset...

### Description At Google, we could want to use JTAG on chips in DEV lifecycle, running our production code. However, one unfortunate effect of enabling the JTAG strapping, is that...