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lantiq: correct value for fpi clock on ar9

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This adds a patch to target/linux/lantiq/patches-3.14
fixing a bug clock code on ar9. The current version returns
the wrong value for the fpi clock frequency in some
cases.

See discussion for further details:
https://lists.openwrt.org/pipermail/openwrt-devel/2015-January/030688.html

I'm not sure about the patch naming and numbering convention.
Do please let me know it this is not OK.

Many thanks,

Ben Mulvihill

Signed-off-by: Ben Mulvihill <ben.mulvihill@gmail.com>

SVN-Revision: 44083
This commit is contained in:
John Crispin 2015-01-23 12:32:28 +00:00
parent bc31129b03
commit 74b3597d07
1 changed files with 21 additions and 0 deletions
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21
target/linux/lantiq/patches-3.14/0038-MIPS-lantiq-fpi-on-ar9.patch Normal file
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@ -0,0 +1,21 @@
Return correct value for fpi clock on ar9.
Signed-off-by: Ben Mulvihill <ben.mulvihill@gmail.com>
---
arch/mips/lantiq/xway/clk.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/arch/mips/lantiq/xway/clk.c 2015-01-21 10:15:44.000000000 +0100
+++ b/arch/mips/lantiq/xway/clk.c 2015-01-21 10:17:29.000000000 +0100
@@ -104,8 +104,9 @@ unsigned long ltq_ar9_fpi_hz(void)
unsigned long sys = ltq_ar9_sys_hz();
if (ltq_cgu_r32(CGU_SYS) & BIT(0))
- return sys;
- return sys >> 1;
+ return sys / 3;
+ else
+ return sys / 2;
}
unsigned long ltq_ar9_cpu_hz(void)