Hi! I work with custom board based on s3c2416 SoC. I'm trying to make cpufreq work. I wrote the driver based on cpu-freq.c from mach-s3c2410. On kernel start i get error message: cpufreq: failed to get clock 'armclk' s3c2416_cpufreq_add: failed to get clocks So i have to add dummy 'armclk' and some dummy clk_ops functions. Now cpufreq starts, and tries to change freqs, calling to my s3c2416_cpufreq_calcdivs. But the problem is that it passes wrong fclk value. Pll rums on 800 MHz, armclk = 400 MHz, hclk = 133, pclk = 66. I get fclk = 400 MHz. It is two time smaller than mpll. I can not understood is value of fclk the same as armclk or as mpll? To count correct armclk divider i must know mpll freq. But as i see in s3c2443_common_setup_clocks and in s3c24xx_setup_clocks, mpll rate is set the same as fclk, but fclk = pll / get_fdiv(clkdiv0); So there is three ways to solve this problem, as i see: 1) pass one more argument to s3c24xx_setup_clocks with value of mpll. This will break to many mach-s3c**** 2) write get_rate for mpll clock and set mpll as a parent for fclk. Problem is that PLLs are diferent on diferent s3c SoCs. 3) the same as 2, but use function get_mpll, wich is passed to s3c2443_common_setup_clocks. Witch way is preferred? Thanks. Andrey. -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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