From: Vladimir Zapolskiy <vz@mleia.com>
Date: Sun, 4 Oct 2015 22:18:45 +0000 (+0100)
Subject: lpc32xx: fix calculation of HCLK PLL output clock
X-Git-Tag: v2015.10-rc5~4
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=4c90234586833c0bb4a5d9d3f69a69c8ab09e01f;p=u-boot

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 <vz@mleia.com>
---

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;