bf10d7edd8
Introduce a codec driver to control a remote audio dsp chip by spi. This patch is running on a rk3588 board with rk3308 adsp board, while the rk3308 actually is a SoC without a slave spi controller, so the rk3588 needs connect to rk3308 by spi. Currently, the host(rk3588) uses the audiocontrol to set volume to the adsp. Change-Id: Ia07e9def78cfe7441dc03c97124f0532bc9d72bc Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com> Signed-off-by: Jun Zeng <jun.zeng@rock-chips.com>