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André Przywara authored
In clock_sun50i_h6.c, responsible for (mostly early) clock setup on newer generation Allwinner SoCs, many functions are only needed by the SPL, and are thus already guarded by CONFIG_SPL_BUILD. Over the years drivers like for the UART or I2C were converted to DM, so they care about clock setup themselves now, by using a proper DM clock driver. This means those devices need the clock setup functions here for the SPL only. Include those functions into the existing CONFIG_SPL_BUILD guards, so they are compiled for the SPL only. By moving the clock_get_pll6() function to the end of the file, all SPL-only clocks can be contained within one #ifdef guard. This avoids unnecessary code in U-Boot proper and helps further refactoring. Add some comments on the way to help understanding of the file. Signed-off-by: Andre Przywara <andre.przywara@arm.com>
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