mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-27 17:18:59 +00:00
38 lines
1.1 KiB
Diff
38 lines
1.1 KiB
Diff
|
From a58eb20fb80f478038243e9e0f30f6984725e265 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
|
||
|
|
Date: Tue, 6 Jan 2015 15:47:18 +0100
|
||
|
|
Subject: sun6i: Sync PLL1 multipliers/dividers with Boot1
|
||
|
|
|
||
|
|
This change syncs up the multipliers and dividers used to initialize
|
||
|
|
PLL1 (i.e. the fast clock driving the ARM cores) with the values used
|
||
|
|
in Allwinner's Boot1 on sun6i.
|
||
|
|
|
||
|
|
More specifically, the following settings are now used:
|
||
|
|
* up to 768MHz: mul=2, div=2 (was: mul=1, div=1)
|
||
|
|
* up to 1152MHz: mul=3, div=2 (unchanged)
|
||
|
|
* above 1152MHz: mul=4, div=2 (was: mul=2, div=1)
|
||
|
|
|
||
|
|
diff --git a/arch/arm/cpu/armv7/sunxi/clock_sun6i.c b/arch/arm/cpu/armv7/sunxi/clock_sun6i.c
|
||
|
|
index cfb32b4..2986539 100644
|
||
|
|
--- a/arch/arm/cpu/armv7/sunxi/clock_sun6i.c
|
||
|
|
+++ b/arch/arm/cpu/armv7/sunxi/clock_sun6i.c
|
||
|
|
@@ -102,11 +102,12 @@ void clock_set_pll1(unsigned int clk)
|
||
|
|
struct sunxi_ccm_reg * const ccm =
|
||
|
|
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
|
||
|
|
const int p = 0;
|
||
|
|
- int k = 1;
|
||
|
|
- int m = 1;
|
||
|
|
+ int k = 2;
|
||
|
|
+ int m = 2;
|
||
|
|
|
||
|
|
if (clk > 1152000000) {
|
||
|
|
- k = 2;
|
||
|
|
+ k = 4;
|
||
|
|
+ m = 2;
|
||
|
|
} else if (clk > 768000000) {
|
||
|
|
k = 3;
|
||
|
|
m = 2;
|
||
|
|
--
|
||
|
|
cgit v0.10.2
|
||
|
|
|