clk: bcm283x: add driver interfacing with Raspberry Pi's firmware
Commit 4e85e535 upstream. Raspberry Pi's firmware offers an interface though which update it's clock's frequencies. This is specially useful in order to change the CPU clock (pllb_arm) which is 'owned' by the firmware and we're unable to scale using the register interface provided by clk-bcm2835. Signed-off-by:Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Acked-by:
Eric Anholt <eric@anholt.net> Signed-off-by:
Stephen Boyd <sboyd@kernel.org>
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