bclk32 246 arch/unicore32/kernel/puv3-core.c struct clk *bclk32; bclk32 248 arch/unicore32/kernel/puv3-core.c bclk32 = clk_get(NULL, "BUS32_CLK"); bclk32 249 arch/unicore32/kernel/puv3-core.c writel(clk_get_rate(bclk32) / 200000, PS2_CNT); /* should > 5us */