1 files changed, 27 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.9/0194-clk-bcm2835-Correct-the-prediv-logic.patch b/target/linux/brcm2708/patches-4.9/0194-clk-bcm2835-Correct-the-prediv-logic.patch
new file mode 100644
index 0000000000..c81194fe69
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.9/0194-clk-bcm2835-Correct-the-prediv-logic.patch
@@ -0,0 +1,27 @@
+From a9913dccdeaabca37343d0d8b0a48cda1e434e02 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Wed, 1 Mar 2017 16:06:53 +0000
+Subject: [PATCH] clk-bcm2835: Correct the prediv logic
+
+If a clock has the prediv flag set, both the integer and fractional
+parts must be scaled when calculating the resulting frequency.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/clk/bcm/clk-bcm2835.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+--- a/drivers/clk/bcm/clk-bcm2835.c
++++ b/drivers/clk/bcm/clk-bcm2835.c
+@@ -616,8 +616,10 @@ static unsigned long bcm2835_pll_get_rat
+ 	using_prediv = cprman_read(cprman, data->ana_reg_base + 4) &
+ 		data->ana->fb_prediv_mask;
+ 
+-	if (using_prediv)
++	if (using_prediv) {
+ 		ndiv *= 2;
++		fdiv *= 2;
++	}
+ 
+ 	return bcm2835_pll_rate_from_divisors(parent_rate, ndiv, fdiv, pdiv);
+ }