[U-Boot] [PATCH 03/28] armv8/fsl-lsch3: Fix platform clock calculation

York Sun
2015-03-19T16:45:34Z

Platform clock is half of platform PLL. There is an additional divisor
in place. Clean up code copied from powerpc.

Signed-off-by: York Sun <yorksun@freescale.com>
---
arch/arm/cpu/armv8/fsl-lsch3/speed.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/arch/arm/cpu/armv8/fsl-lsch3/speed.c b/arch/arm/cpu/armv8/fsl-lsch3/speed.c
index 72cd999..2b140cd 100644
--- a/arch/arm/cpu/armv8/fsl-lsch3/speed.c
+++ b/arch/arm/cpu/armv8/fsl-lsch3/speed.c
@@ -86,6 +86,8 @@ void get_sys_info(struct sys_info *sys_info)
sys_info->freq_systembus *= (in_le32(&gur->rcwsr[0]) >>
FSL_CHASSIS3_RCWSR0_SYS_PLL_RAT_SHIFT) &
FSL_CHASSIS3_RCWSR0_SYS_PLL_RAT_MASK;
+ /* Platform clock is half of platform PLL */
+ sys_info->freq_systembus /= 2;
sys_info->freq_ddrbus *= (in_le32(&gur->rcwsr[0]) >>
FSL_CHASSIS3_RCWSR0_MEM_PLL_RAT_SHIFT) &
FSL_CHASSIS3_RCWSR0_MEM_PLL_RAT_MASK;
@@ -102,10 +104,7 @@ void get_sys_info(struct sys_info *sys_info)
offsetof(struct ccsr_clk_cluster_group,
pllngsr[i%3].gsr));
ratio[i] = (in_le32(offset) >> 1) & 0x3f;
- if (ratio[i] > 4)
- freq_c_pll[i] = sysclk * ratio[i];
- else
- freq_c_pll[i] = sys_info->freq_systembus * ratio[i];
+ freq_c_pll[i] = sysclk * ratio[i];
}

for_each_cpu(i, cpu, cpu_numcores(), cpu_mask()) {
--
1.7.9.5