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rk3026: i2s add several attempts to double confirm i2s frac effect

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This commit is contained in:
chenxing 2013-11-06 09:32:49 +08:00
parent 96342a866b
commit baf73f765d
1 changed files with 7 additions and 1 deletions
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8
arch/arm/mach-rk3026/clock_data.c
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@ -1687,12 +1687,18 @@ static struct clk clk_i2s_pll = {
static int i2s_fracdiv_set_rate(struct clk *clk, unsigned long rate)
{
u32 numerator, denominator;
int i = 10;
//clk_i2s_div->clk_i2s_pll->gpll/cpll
//clk->parent->parent
if (frac_div_get_seting(rate, clk->parent->parent->rate,
&numerator, &denominator) == 0) {
clk_set_rate_nolock(clk->parent, clk->parent->parent->rate); //PLL:DIV 1:
cru_writel_frac(numerator << 16 | denominator, clk->clksel_con);
while (i--) {
cru_writel_frac((numerator - 1) << 16 | denominator, clk->clksel_con);
mdelay(1);
cru_writel_frac(numerator << 16 | denominator, clk->clksel_con);
mdelay(1);
}
CLKDATA_DBG("%s set rate=%lu,is ok\n", clk->name, rate);
} else {
CLKDATA_DBG("clk_frac_div can't get rate=%lu,%s\n", rate, clk->name);