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rtiocrg.c: pipistrello also has pll_reset

This commit is contained in:
Robert Jördens 2015-07-27 22:14:42 -06:00
parent e95b06e96d
commit bdee914828
1 changed files with 0 additions and 12 deletions
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12
soc/runtime/rtiocrg.c
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@ -10,9 +10,7 @@ void rtiocrg_init(void)
char b; char b;
int clk; int clk;
#ifdef CSR_RTIO_CRG_PLL_RESET_ADDR
rtio_crg_pll_reset_write(0); rtio_crg_pll_reset_write(0);
#endif
b = 'i'; b = 'i';
clk = 0; clk = 0;
fs_read("startup_clock", &b, 1, NULL); fs_read("startup_clock", &b, 1, NULL);
@ -33,11 +31,7 @@ void rtiocrg_init(void)
int rtiocrg_check(void) int rtiocrg_check(void)
{ {
#ifdef CSR_RTIO_CRG_PLL_RESET_ADDR
return rtio_crg_pll_locked_read(); return rtio_crg_pll_locked_read();
#else
return 1;
#endif
} }
int rtiocrg_switch_clock(int clk) int rtiocrg_switch_clock(int clk)
@ -46,22 +40,16 @@ int rtiocrg_switch_clock(int clk)
current_clk = rtio_crg_clock_sel_read(); current_clk = rtio_crg_clock_sel_read();
if(clk == current_clk) { if(clk == current_clk) {
#ifdef CSR_RTIO_CRG_PLL_RESET_ADDR
busywait_us(150); busywait_us(150);
if(!rtio_crg_pll_locked_read()) if(!rtio_crg_pll_locked_read())
return 0; return 0;
#endif
return 1; return 1;
} }
#ifdef CSR_RTIO_CRG_PLL_RESET_ADDR
rtio_crg_pll_reset_write(1); rtio_crg_pll_reset_write(1);
#endif
rtio_crg_clock_sel_write(clk); rtio_crg_clock_sel_write(clk);
#ifdef CSR_RTIO_CRG_PLL_RESET_ADDR
rtio_crg_pll_reset_write(0); rtio_crg_pll_reset_write(0);
busywait_us(150); busywait_us(150);
if(!rtio_crg_pll_locked_read()) if(!rtio_crg_pll_locked_read())
return 0; return 0;
#endif
return 1; return 1;
} }