Hi Sergei, On Sun, Oct 30, 2016 at 7:36 PM, Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx> wrote: > drivers/clk/renesas/rcar-gen3-cpg.c seems to forget that the PLL0/2/4 all > have a fixed divisor (2) while it multiplies PLLxCR.STC with 2 for the > 'mult' variable (see the manual). All the dependent frequencies this should > be reported greater x2 than the actual ones... The actual frequencies in /sys/kernel/debug/clk/clk_summary are correct, though, considering MD14=MD13=MD19=M17=1 (for a 33.3333 MHz EXTAL), while Salvator-X has a 16.6666 MHz EXTAL. Perhaps you missed the extal divider? Note that I have measured MSIOF clock signal frequencies before, and they matched Linux' point of view. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds