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update ddr delayus

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yangkai
2011-03-16 22:14:14 +08:00
parent 25049b15fe
commit ddb1adbaa9
1 changed files with 7 additions and 5 deletions
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12
arch/arm/mach-rk29/ddr.c
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@@ -568,10 +568,10 @@ Cpu highest frequency is 1.2 GHz
void __sramlocalfunc delayus(uint32_t us)
{
uint32_t count;
if(cpu_freq == 600)
count = us * 150;//533;
if(cpu_freq == 24)
count = us * 6;//533;
else
count = us*6;
count = us*200;
while(count--) // 3 cycles
barrier();
@@ -1015,8 +1015,10 @@ void __sramfunc ddr_change_freq(uint32_t nMHz)
local_irq_save(flags);
//ddr_print("%s enter\n", __func__);
cpu_freq = clk_get_rate(clk_get(NULL,"core"));
cpu_freq = cpu_freq/1000000;
if((pSCU_Reg->CRU_MODE_CON & 0x03) == 0x03)
cpu_freq = 24;
else
cpu_freq = clk_get_rate(clk_get(NULL,"core"))/1000000;
ret = ddr_set_pll(nMHz, 0);
ddr_get_parameter(ret);