On Wed, Oct 16, 2024 at 05:18:42PM +0200, Christian Marangi wrote: > Add support for Airoha TRNG. The Airoha SoC provide a True RNG module > that can output 4 bytes of raw data at times. > > The module makes use of various noise source to provide True Random > Number Generation. > > On probe the module is reset to operate Health Test and verify correct > execution of it. > > The module can also provide DRBG function but the execution mode is > mutually exclusive, running as TRNG doesn't permit to also run it as > DRBG. > > Signed-off-by: Christian Marangi <ansuelsmth@xxxxxxxxx> > --- > drivers/char/hw_random/Kconfig | 13 ++ > drivers/char/hw_random/Makefile | 1 + > drivers/char/hw_random/airoha-trng.c | 243 +++++++++++++++++++++++++++ > 3 files changed, 257 insertions(+) > create mode 100644 drivers/char/hw_random/airoha-trng.c > > diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig > index 5912c2dd6398..bda283f290bc 100644 > --- a/drivers/char/hw_random/Kconfig > +++ b/drivers/char/hw_random/Kconfig > @@ -62,6 +62,19 @@ config HW_RANDOM_AMD > > If unsure, say Y. > > +config HW_RANDOM_AIROHA > + tristate "Airoha True HW Random Number Generator support" > + depends on ARCH_AIROHA || COMPILE_TEST > + default HW_RANDOM This should not be always enabled when HW_RANDOM is enabled. Enabling driver should be a opt-in. Francesco
