diff options
Diffstat (limited to 'package/boot/uboot-sunxi/patches/091-sun6i-sync-PLL1-multdiv-with-Boot1.patch')
| -rw-r--r-- | package/boot/uboot-sunxi/patches/091-sun6i-sync-PLL1-multdiv-with-Boot1.patch | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/package/boot/uboot-sunxi/patches/091-sun6i-sync-PLL1-multdiv-with-Boot1.patch b/package/boot/uboot-sunxi/patches/091-sun6i-sync-PLL1-multdiv-with-Boot1.patch new file mode 100644 index 0000000000..f782994c14 --- /dev/null +++ b/package/boot/uboot-sunxi/patches/091-sun6i-sync-PLL1-multdiv-with-Boot1.patch @@ -0,0 +1,37 @@ +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 + |