From 4c90234586833c0bb4a5d9d3f69a69c8ab09e01f Mon Sep 17 00:00:00 2001 From: Vladimir Zapolskiy Date: Sun, 4 Oct 2015 23:18:45 +0100 Subject: [PATCH] lpc32xx: fix calculation of HCLK PLL output clock Execution branches on feedback mode are swapped, this has no effect if default direct mode is on (then p_div is equal to 1 and Fout equals to Fcco), that's why the problem remained unnoticed for a long time. Signed-off-by: Vladimir Zapolskiy --- arch/arm/cpu/arm926ejs/lpc32xx/clk.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/arm/cpu/arm926ejs/lpc32xx/clk.c b/arch/arm/cpu/arm926ejs/lpc32xx/clk.c index 1ef8a36669..f5e2103426 100644 --- a/arch/arm/cpu/arm926ejs/lpc32xx/clk.c +++ b/arch/arm/cpu/arm926ejs/lpc32xx/clk.c @@ -54,12 +54,12 @@ unsigned int get_hclk_pll_rate(void) if (fref > 27000000ULL || fref < 1000000ULL) return 0; - fout = fref * m_div; - if (val & CLK_HCLK_PLL_FEEDBACK) { - fcco = fout; + fcco = fref * m_div; + fout = fcco; + if (val & CLK_HCLK_PLL_FEEDBACK) + fcco *= p_div; + else do_div(fout, p_div); - } else - fcco = fout * p_div; if (fcco > 320000000ULL || fcco < 156000000ULL) return 0; -- 2.25.1