/* * (C) Copyright 2007 * Stefan Roese, DENX Software Engineering, sr@denx.de. * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include <common.h> #include <asm/processor.h> #include <ppc405.h> /* test-only: move into cpu directory!!! */ #if defined(PLLMR0_200_133_66) void board_pll_init_f(void) { /* * set PLL clocks based on input sysclk is 33M * * ---------------------------------- * | CLK | FREQ (MHz) | DIV RATIO | * ---------------------------------- * | CPU | 200.0 | 4 (0x02)| * | PLB | 133.3 | 6 (0x06)| * | OPB | 66.6 | 12 (0x0C)| * | EBC | 66.6 | 12 (0x0C)| * | SPI | 66.6 | 12 (0x0C)| * | UART0 | 10.0 | 40 (0x28)| * | UART1 | 10.0 | 40 (0x28)| * | DAC | 2.0 | 200 (0xC8)| * | ADC | 2.0 | 200 (0xC8)| * | PWM | 100.0 | 4 (0x04)| * | EMAC | 25.0 | 16 (0x10)| * ----------------------------------- */ /* Initialize PLL */ mtcpr(cprpllc, 0x0000033c); mtcpr(cprplld, 0x0c010200); mtcpr(cprprimad, 0x04060c0c); mtcpr(cprperd0, 0x000c0000); /* SPI clk div. eq. OPB clk div. */ mtcpr(cprclkupd, 0x40000000); } #elif defined(PLLMR0_266_160_80) void board_pll_init_f(void) { /* * set PLL clocks based on input sysclk is 33M * * ---------------------------------- * | CLK | FREQ (MHz) | DIV RATIO | * ---------------------------------- * | CPU | 266.64 | 3 | * | PLB | 159.98 | 5 (0x05)| * | OPB | 79.99 | 10 (0x0A)| * | EBC | 79.99 | 10 (0x0A)| * | SPI | 79.99 | 10 (0x0A)| * | UART0 | 28.57 | 7 (0x07)| * | UART1 | 28.57 | 7 (0x07)| * | DAC | 28.57 | 7 (0xA7)| * | ADC | 4 | 50 (0x32)| * | PWM | 28.57 | 7 (0x07)| * | EMAC | 4 | 50 (0x32)| * ----------------------------------- */ /* Initialize PLL */ mtcpr(cprpllc, 0x20000238); mtcpr(cprplld, 0x03010400); mtcpr(cprprimad, 0x03050a0a); mtcpr(cprperc0, 0x00000000); mtcpr(cprperd0, 0x070a0707); /* SPI clk div. eq. OPB clk div. */ mtcpr(cprperd1, 0x07323200); mtcpr(cprclkupd, 0x40000000); } #elif defined(PLLMR0_333_166_83) void board_pll_init_f(void) { /* * set PLL clocks based on input sysclk is 33M * * ---------------------------------- * | CLK | FREQ (MHz) | DIV RATIO | * ---------------------------------- * | CPU | 333.33 | 2 | * | PLB | 166.66 | 4 (0x04)| * | OPB | 83.33 | 8 (0x08)| * | EBC | 83.33 | 8 (0x08)| * | SPI | 83.33 | 8 (0x08)| * | UART0 | 16.66 | 5 (0x05)| * | UART1 | 16.66 | 5 (0x05)| * | DAC | ???? | 166 (0xA6)| * | ADC | ???? | 166 (0xA6)| * | PWM | 41.66 | 3 (0x03)| * | EMAC | ???? | 3 (0x03)| * ----------------------------------- */ /* Initialize PLL */ mtcpr(cprpllc, 0x0000033C); mtcpr(cprplld, 0x0a010000); mtcpr(cprprimad, 0x02040808); mtcpr(cprperd0, 0x02080505); /* SPI clk div. eq. OPB clk div. */ mtcpr(cprperd1, 0xA6A60300); mtcpr(cprclkupd, 0x40000000); } #elif defined(PLLMR0_100_100_12) void board_pll_init_f(void) { /* * set PLL clocks based on input sysclk is 33M * * ---------------------- * | CLK | FREQ (MHz) | * ---------------------- * | CPU | 100.00 | * | PLB | 100.00 | * | OPB | 12.00 | * | EBC | 49.00 | * ---------------------- */ /* Initialize PLL */ mtcpr(cprpllc, 0x000003BC); mtcpr(cprplld, 0x06060600); mtcpr(cprprimad, 0x02020004); mtcpr(cprperd0, 0x04002828); /* SPI clk div. eq. OPB clk div. */ mtcpr(cprperd1, 0xC8C81600); mtcpr(cprclkupd, 0x40000000); } #endif /* CPU_<speed>_405EZ */ #if defined(CONFIG_NAND_SPL) || defined(CONFIG_SPI_SPL) /* * Get timebase clock frequency */ unsigned long get_tbclk(void) { unsigned long cpr_plld; unsigned long cpr_primad; unsigned long primad_cpudv; unsigned long pllFbkDiv; unsigned long freqProcessor; /* * Read PLL Mode registers */ mfcpr(cprplld, cpr_plld); /* * Read CPR_PRIMAD register */ mfcpr(cprprimad, cpr_primad); /* * Determine CPU clock frequency */ primad_cpudv = ((cpr_primad & PRIMAD_CPUDV_MASK) >> 24); if (primad_cpudv == 0) primad_cpudv = 16; /* * Determine FBK_DIV. */ pllFbkDiv = ((cpr_plld & PLLD_FBDV_MASK) >> 24); if (pllFbkDiv == 0) pllFbkDiv = 256; freqProcessor = (CONFIG_SYS_CLK_FREQ * pllFbkDiv) / primad_cpudv; return (freqProcessor); } #endif /* defined(CONFIG_NAND_SPL) || defined(CONFIG_SPI_SPL) */