AT91_PMC_PCKR
css = readl(soc_pm.data.pmc + AT91_PMC_PCKR(i)) & AT91_PMC_CSS;
regmap_update_bits(prog->regmap, AT91_PMC_PCKR(prog->id), mask, pckr);
regmap_read(prog->regmap, AT91_PMC_PCKR(prog->id), &pckr);
regmap_update_bits(prog->regmap, AT91_PMC_PCKR(prog->id),
regmap_read(prog->regmap, AT91_PMC_PCKR(prog->id), &pckr);