Finally, after all the prerequisites, here is now the series to let the testunit trigger SMBusAlerts. First two patches are preparations, third one is the real thing. The patches are based on i2c/for-next and have been tested on a Renesas Lager board (R-Car H2) and a Renesas Falcon board (R-Car V3U). Next and final step is to update/clarify DT bindings so GPIOs are recognized as custom SMBALERT# pins. Code is all there already. Looking forward to comments! Wolfram Sang (3): i2c: testunit: describe fwnode based instantiation i2c: testunit: move code to avoid a forward declaration i2c: testunit: add SMBusAlert trigger Documentation/i2c/slave-testunit-backend.rst | 60 +++++++++ drivers/i2c/i2c-slave-testunit.c | 123 ++++++++++++++----- 2 files changed, 151 insertions(+), 32 deletions(-) -- 2.43.0