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28 lines
860 B
Diff
28 lines
860 B
Diff
From a9913dccdeaabca37343d0d8b0a48cda1e434e02 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Wed, 1 Mar 2017 16:06:53 +0000
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Subject: [PATCH] clk-bcm2835: Correct the prediv logic
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If a clock has the prediv flag set, both the integer and fractional
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parts must be scaled when calculating the resulting frequency.
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Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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---
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drivers/clk/bcm/clk-bcm2835.c | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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--- a/drivers/clk/bcm/clk-bcm2835.c
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+++ b/drivers/clk/bcm/clk-bcm2835.c
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@@ -616,8 +616,10 @@ static unsigned long bcm2835_pll_get_rat
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using_prediv = cprman_read(cprman, data->ana_reg_base + 4) &
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data->ana->fb_prediv_mask;
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- if (using_prediv)
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+ if (using_prediv) {
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ndiv *= 2;
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+ fdiv *= 2;
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+ }
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return bcm2835_pll_rate_from_divisors(parent_rate, ndiv, fdiv, pdiv);
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}
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