Re: [PATCH] clk: spacemit: program the mux when setting a mix clock's rate

[Dave Klotz]

Also tested on the OrangePi R2S with upstream's K1 SDHCI driver from
next: the SPL moves the eMMC io clock from 409.6 MHz to 204.8 MHz and
loads U-Boot, which then runs the eMMC in HS200. The tree is upstream
next plus the posted K1 fixes and board support that is not posted yet.