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add clkrstSetMinVClockRate() and clkrstGetDvfsTable() #734

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add clkrstSetMinVClockRate() and clkrstGetDvfsTable() #734

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c490f50
clkrst: add clkrstSetMinVClockRate and clkrstGetDvfsTable
Lightos1 Jun 28, 2026
69c3226
change names
Lightos1 Jun 28, 2026
c3b184e
Change function order/names
Lightos1 Jun 30, 2026
c5b49b2
correct function order in header
Lightos1 Jun 30, 2026
315d1e0
clkrstGetDvfsTable: remove reduntant firmware version checks
Lightos1 Jun 30, 2026
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2 changes: 2 additions & 0 deletions nx/include/switch/services/clkrst.h
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Original file line number Diff line number Diff line change
Expand Up @@ -27,4 +27,6 @@ Result clkrstOpenSession(ClkrstSession* session_out, PcvModuleId module_id, u32
void clkrstCloseSession(ClkrstSession* session);
Result clkrstSetClockRate(ClkrstSession* session, u32 hz);
Result clkrstGetClockRate(ClkrstSession* session, u32 *out_hz);
Result clkrstSetMinimumVoltageClockRate(ClkrstSession *session, u32 hz);
Result clkrstGetPossibleClockRates(ClkrstSession *session, u32 *rates, s32 max_count, PcvClockRatesListType *out_type, s32 *out_count);
Result clkrstGetDvfsTable(ClkrstSession *session, u32 *out_rate_table, s32 in_rate_count, u32 *out_voltage_table, s32 in_voltage_count, s32 *out_count);
29 changes: 29 additions & 0 deletions nx/source/services/clkrst.c
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Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,10 @@ Result clkrstGetClockRate(ClkrstSession* session, u32 *out_hz) {
return serviceDispatchOut(&session->s, 8, *out_hz);
}

Result clkrstSetMinimumVoltageClockRate(ClkrstSession *session, u32 hz) {
return serviceDispatchIn(&session->s, 9, hz);
}

Result clkrstGetPossibleClockRates(ClkrstSession *session, u32 *rates, s32 max_count, PcvClockRatesListType *out_type, s32 *out_count) {
struct {
s32 type;
Expand All @@ -61,3 +65,28 @@ Result clkrstGetPossibleClockRates(ClkrstSession *session, u32 *rates, s32 max_c

return rc;
}

Result clkrstGetDvfsTable(ClkrstSession *session, u32 *out_rate_table, s32 in_rate_count, u32 *out_voltage_table, s32 in_voltage_count, s32 *out_count) {
const struct {
s32 rate_count;
s32 voltage_count;
} in = { in_rate_count, in_voltage_count };

s32 out = 0;
Result rc = serviceDispatchInOut(&session->s, 11, in, out,
.buffer_attrs = {
SfBufferAttr_Out | SfBufferAttr_HipcAutoSelect,
SfBufferAttr_Out | SfBufferAttr_HipcAutoSelect,
},
.buffers = {
{ out_rate_table, in_rate_count * sizeof(u32) },
{ out_voltage_table, in_voltage_count * sizeof(u32) },
},
);

if (R_SUCCEEDED(rc) && out_count) {
*out_count = out;
}

return rc;
}