/* Select the MMC clock frequency */
static int jz_mmc_set_clock(u32 rate)
{
int clkrt;
jz_mmc_stop_clock();
__cpm_select_msc_clk(1); /* select clock source from CPM */
clkrt = jz_mmc_calc_clkrt(1, rate);
REG_MSC_CLKRT = clkrt;
return MMC_NO_ERROR;
}
/* Select the MMC clock frequency */
static int jz_mmc_set_clock(u32 rate)
{
int clkrt;
/* __cpm_select_msc_clk_high will select 48M clock for MMC/SD card
* perhaps this will made some card with bad quality init fail,or
* bad stabilization.
*/
if (rate > SD_CLOCK_FAST) {
__cpm_select_msc_clk_high(MSC_ID,1); /* select clock source from CPM */
clkrt = jz_mmc_calc_clkrt(0, rate);
} else {
__cpm_select_msc_clk(MSC_ID,1); /* select clock source from CPM */
clkrt = jz_mmc_calc_clkrt(1, rate);
}
#ifndef CONFIG_FPGA
REG_MSC_CLKRT(MSC_ID) = clkrt;
#else
REG_MSC_CLKRT(MSC_ID) = 7;
#endif
return MMC_NO_ERROR;
}