visus
/
teensy-core-4.1
關註 1
收藏 0
複製 0
程式碼 問題管理 0 合併請求 0 版本發佈 0 Wiki Activity
瀏覽代碼

Easier F_BUS overclocking

teensy4-core
PaulStoffregen 8 年之前
父節點
be42e0574e
當前提交
d79723c252
共有 2 個文件被更改，包括 81 次插入 和 0 次删除
分割檢視 顯示文件統計
  1. +27
    -0
      teensy3/kinetis.h
  2. +54
    -0
      teensy3/mk20dx128.c

+ 27
- 0
teensy3/kinetis.h 查看文件

@@ -755,19 +755,34 @@ enum IRQ_NUMBER_t {

#if (F_CPU == 240000000)
#define F_PLL 240000000
#ifndef F_BUS
#define F_BUS 60000000
//#define F_BUS 80000000 // uncomment these to try peripheral overclocking
//#define F_BUS 120000000 // all the usual overclocking caveats apply...
#endif
#define F_MEM 30000000
#elif (F_CPU == 216000000)
#define F_PLL 216000000
#ifndef F_BUS
#define F_BUS 54000000
//#define F_BUS 72000000
//#define F_BUS 108000000
#endif
#define F_MEM 27000000
#elif (F_CPU == 192000000)
#define F_PLL 192000000
#ifndef F_BUS
#define F_BUS 48000000
//#define F_BUS 64000000
//#define F_BUS 96000000
#endif
#define F_MEM 27428571
#elif (F_CPU == 180000000)
#define F_PLL 180000000
#ifndef F_BUS
#define F_BUS 60000000
//#define F_BUS 90000000
#endif
#define F_MEM 25714286
#elif (F_CPU == 168000000)
#define F_PLL 168000000
@@ -775,19 +790,31 @@ enum IRQ_NUMBER_t {
#define F_MEM 28000000
#elif (F_CPU == 144000000)
#define F_PLL 144000000
#ifndef F_BUS
#define F_BUS 48000000
//#define F_BUS 72000000
#endif
#define F_MEM 28800000
#elif (F_CPU == 120000000)
#define F_PLL 120000000
#ifndef F_BUS
#define F_BUS 60000000
//#define F_BUS 120000000
#endif
#define F_MEM 24000000
#elif (F_CPU == 96000000)
#define F_PLL 96000000
#ifndef F_BUS
#define F_BUS 48000000
//#define F_BUS 96000000
#endif
#define F_MEM 24000000
#elif (F_CPU == 72000000)
#define F_PLL 72000000
#ifndef F_BUS
#define F_BUS 36000000
//#define F_BUS 72000000
#endif
#define F_MEM 24000000
#elif (F_CPU == 48000000)
#define F_PLL 96000000

+ 54
- 0
teensy3/mk20dx128.c 查看文件

@@ -888,21 +888,51 @@ void ResetHandler(void)
#if F_CPU == 240000000
// config divisors: 240 MHz core, 60 MHz bus, 30 MHz flash, USB = 240 / 5
// TODO: gradual ramp-up for HSRUN mode
#if F_BUS == 60000000
SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(3) | SIM_CLKDIV1_OUTDIV4(7);
#elif F_BUS == 80000000
SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(2) | SIM_CLKDIV1_OUTDIV4(7);
#elif F_BUS == 120000000
SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(1) | SIM_CLKDIV1_OUTDIV4(7);
#else
#error "This F_CPU & F_BUS combination is not supported"
#endif
SIM_CLKDIV2 = SIM_CLKDIV2_USBDIV(4);
#elif F_CPU == 216000000
// config divisors: 216 MHz core, 54 MHz bus, 27 MHz flash, USB = IRC48M
// TODO: gradual ramp-up for HSRUN mode
#if F_BUS == 54000000
SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(3) | SIM_CLKDIV1_OUTDIV4(7);
#elif F_BUS == 72000000
SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(2) | SIM_CLKDIV1_OUTDIV4(7);
#elif F_BUS == 108000000
SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(1) | SIM_CLKDIV1_OUTDIV4(7);
#else
#error "This F_CPU & F_BUS combination is not supported"
#endif
SIM_CLKDIV2 = SIM_CLKDIV2_USBDIV(0);
#elif F_CPU == 192000000
// config divisors: 192 MHz core, 48 MHz bus, 27.4 MHz flash, USB = 192 / 4
// TODO: gradual ramp-up for HSRUN mode
#if F_BUS == 48000000
SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(3) | SIM_CLKDIV1_OUTDIV4(6);
#elif F_BUS == 64000000
SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(2) | SIM_CLKDIV1_OUTDIV4(6);
#elif F_BUS == 96000000
SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(1) | SIM_CLKDIV1_OUTDIV4(6);
#else
#error "This F_CPU & F_BUS combination is not supported"
#endif
SIM_CLKDIV2 = SIM_CLKDIV2_USBDIV(3);
#elif F_CPU == 180000000
// config divisors: 180 MHz core, 60 MHz bus, 25.7 MHz flash, USB = IRC48M
#if F_BUS == 60000000
SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(2) | SIM_CLKDIV1_OUTDIV4(6);
#elif F_BUS == 90000000
SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(1) | SIM_CLKDIV1_OUTDIV4(6);
#else
#error "This F_CPU & F_BUS combination is not supported"
#endif
SIM_CLKDIV2 = SIM_CLKDIV2_USBDIV(0);
#elif F_CPU == 168000000
// config divisors: 168 MHz core, 56 MHz bus, 28 MHz flash, USB = 168 * 2 / 7
@@ -910,19 +940,43 @@ void ResetHandler(void)
SIM_CLKDIV2 = SIM_CLKDIV2_USBDIV(6) | SIM_CLKDIV2_USBFRAC;
#elif F_CPU == 144000000
// config divisors: 144 MHz core, 48 MHz bus, 28.8 MHz flash, USB = 144 / 3
#if F_BUS == 48000000
SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(2) | SIM_CLKDIV1_OUTDIV4(4);
#elif F_BUS == 72000000
SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(1) | SIM_CLKDIV1_OUTDIV4(4);
#else
#error "This F_CPU & F_BUS combination is not supported"
#endif
SIM_CLKDIV2 = SIM_CLKDIV2_USBDIV(2);
#elif F_CPU == 120000000
// config divisors: 120 MHz core, 60 MHz bus, 24 MHz flash, USB = 128 * 2 / 5
#if F_BUS == 60000000
SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(1) | SIM_CLKDIV1_OUTDIV4(4);
#elif F_BUS == 120000000
SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(0) | SIM_CLKDIV1_OUTDIV4(4);
#else
#error "This F_CPU & F_BUS combination is not supported"
#endif
SIM_CLKDIV2 = SIM_CLKDIV2_USBDIV(4) | SIM_CLKDIV2_USBFRAC;
#elif F_CPU == 96000000
// config divisors: 96 MHz core, 48 MHz bus, 24 MHz flash, USB = 96 / 2
#if F_BUS == 48000000
SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(1) | SIM_CLKDIV1_OUTDIV4(3);
#elif F_BUS == 96000000
SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(0) | SIM_CLKDIV1_OUTDIV4(3);
#else
#error "This F_CPU & F_BUS combination is not supported"
#endif
SIM_CLKDIV2 = SIM_CLKDIV2_USBDIV(1);
#elif F_CPU == 72000000
// config divisors: 72 MHz core, 36 MHz bus, 24 MHz flash, USB = 72 * 2 / 3
#if F_BUS == 36000000
SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(1) | SIM_CLKDIV1_OUTDIV4(2);
#elif F_BUS == 72000000
SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(0) | SIM_CLKDIV1_OUTDIV4(2);
#else
#error "This F_CPU & F_BUS combination is not supported"
#endif
SIM_CLKDIV2 = SIM_CLKDIV2_USBDIV(2) | SIM_CLKDIV2_USBFRAC;
#elif F_CPU == 48000000
// config divisors: 48 MHz core, 48 MHz bus, 24 MHz flash, USB = 96 / 2

Write Preview
Loading…
取消
儲存