• Michael Walle's avatar
    crypto: caam - disable pkc for non-E SoCs · f20311cc
    Michael Walle authored
    On newer CAAM versions, not all accelerators are disabled if the SoC is
    a non-E variant. While the driver checks most of the modules for
    availability, there is one - PKHA - which sticks out. On non-E variants
    it is still reported as available, that is the number of instances is
    non-zero, but it has limited functionality. In particular it doesn't
    support encryption and decryption, but just signing and verifying. This
    is indicated by a bit in the PKHA_MISC field. Take this bit into account
    if we are checking for availability.
    
    This will the following error:
    [    8.167817] caam_jr 8020000.jr: 20000b0f: CCB: desc idx 11: : Invalid CHA selected.
    
    Tested on an NXP LS1028A (non-E) SoC.
    
    Fixes: d239b10d ("crypto: caam - add register map changes cf. Era 10")
    Signed-off-by: default avatarMichael Walle <michael@walle.cc>
    Reviewed-by: default avatarHoria Geantă <horia.geanta@nxp.com>
    Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
    f20311cc
caampkc.c 32.1 KB