6cca8f154a
RTS, DTR and LOOP bits can be updated in a single MCR register update. This reduces the number of (slow) SPI/I2C bus transactions. Signed-off-by: Lech Perczak <l.perczak@camlintechnologies.com> Signed-off-by: Tomasz Moń <tomasz.mon@camlingroup.com> Link: https://lore.kernel.org/r/20220221105618.3503470-3-tomasz.mon@camlingroup.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>