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cpg: add superhyway clock frequency calculation

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CalcLoverHK 2025-02-16 17:04:27 +08:00 • committed by Chen-Zhanming
parent 3c36a2e14e
commit 3178aa6987
2 changed files with 5 additions and 0 deletions
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2
include/gint/clock.h
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@ -35,6 +35,7 @@ typedef struct
int Bphi_div; int Bphi_div;
int Iphi_div; int Iphi_div;
int Pphi_div; int Pphi_div;
int Sphi_div;
union { union {
int CKIO_f; int CKIO_f;
@ -44,6 +45,7 @@ typedef struct
int Bphi_f; int Bphi_f;
int Iphi_f; int Iphi_f;
int Pphi_f; int Pphi_f;
int Sphi_f;
} clock_frequency_t; } clock_frequency_t;

3
src/cpg/cpg.c
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@ -84,10 +84,12 @@ static void sh7305_probe(void)
int divb = CPG.FRQCR.BFC; int divb = CPG.FRQCR.BFC;
int divi = CPG.FRQCR.IFC; int divi = CPG.FRQCR.IFC;
int divp = CPG.FRQCR.P1FC; int divp = CPG.FRQCR.P1FC;
int divs = CPG.FRQCR.SFC;
freq.Bphi_div = 1 << (divb + 1); freq.Bphi_div = 1 << (divb + 1);
freq.Iphi_div = 1 << (divi + 1); freq.Iphi_div = 1 << (divi + 1);
freq.Pphi_div = 1 << (divp + 1); freq.Pphi_div = 1 << (divp + 1);
freq.Sphi_div = 1 << (divs + 1);
/* Deduce the input frequency of divider 1 */ /* Deduce the input frequency of divider 1 */
int base = 32768; int base = 32768;
@ -99,6 +101,7 @@ static void sh7305_probe(void)
freq.Bphi_f = base >> (divb + 1); freq.Bphi_f = base >> (divb + 1);
freq.Iphi_f = base >> (divi + 1); freq.Iphi_f = base >> (divi + 1);
freq.Pphi_f = base >> (divp + 1); freq.Pphi_f = base >> (divp + 1);
freq.Sphi_f = base >> (divs + 1);
} }
#undef CPG #undef CPG