if (!m)
m++;
+ if (ccu_sdm_helper_is_enabled(&nm->common, &nm->sdm)) {
+ unsigned long rate =
+ ccu_sdm_helper_read_rate(&nm->common, &nm->sdm,
+ m, n);
+ if (rate)
+ return rate;
+ }
+
return parent_rate * n / m;
}
if (ccu_frac_helper_has_rate(&nm->common, &nm->frac, rate))
return rate;
+ if (ccu_sdm_helper_has_rate(&nm->common, &nm->sdm, rate))
+ return rate;
+
_nm.min_n = nm->n.min ?: 1;
_nm.max_n = nm->n.max ?: 1 << nm->n.width;
_nm.min_m = 1;
_nm.min_m = 1;
_nm.max_m = nm->m.max ?: 1 << nm->m.width;
- ccu_nm_find_best(parent_rate, rate, &_nm);
+ if (ccu_sdm_helper_has_rate(&nm->common, &nm->sdm, rate)) {
+ ccu_sdm_helper_enable(&nm->common, &nm->sdm, rate);
+
+ /* Sigma delta modulation requires specific N and M factors */
+ ccu_sdm_helper_get_factors(&nm->common, &nm->sdm, rate,
+ &_nm.m, &_nm.n);
+ } else {
+ ccu_sdm_helper_disable(&nm->common, &nm->sdm);
+ ccu_nm_find_best(parent_rate, rate, &_nm);
+ }
spin_lock_irqsave(nm->common.lock, flags);
#include "ccu_div.h"
#include "ccu_frac.h"
#include "ccu_mult.h"
+#include "ccu_sdm.h"
/*
* struct ccu_nm - Definition of an N-M clock
struct ccu_mult_internal n;
struct ccu_div_internal m;
struct ccu_frac_internal frac;
+ struct ccu_sdm_internal sdm;
struct ccu_common common;
};
+#define SUNXI_CCU_NM_WITH_SDM_GATE_LOCK(_struct, _name, _parent, _reg, \
+ _nshift, _nwidth, \
+ _mshift, _mwidth, \
+ _sdm_table, _sdm_en, \
+ _sdm_reg, _sdm_reg_en, \
+ _gate, _lock, _flags) \
+ struct ccu_nm _struct = { \
+ .enable = _gate, \
+ .lock = _lock, \
+ .n = _SUNXI_CCU_MULT(_nshift, _nwidth), \
+ .m = _SUNXI_CCU_DIV(_mshift, _mwidth), \
+ .sdm = _SUNXI_CCU_SDM(_sdm_table, _sdm_en, \
+ _sdm_reg, _sdm_reg_en),\
+ .common = { \
+ .reg = _reg, \
+ .features = CCU_FEATURE_SIGMA_DELTA_MOD, \
+ .hw.init = CLK_HW_INIT(_name, \
+ _parent, \
+ &ccu_nm_ops, \
+ _flags), \
+ }, \
+ }
+
#define SUNXI_CCU_NM_WITH_FRAC_GATE_LOCK(_struct, _name, _parent, _reg, \
_nshift, _nwidth, \
_mshift, _mwidth, \