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SMC1 uses external CLK4 instead of BRG on spc1920

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This commit is contained in:
Markus Klotzbuecher
2007-01-09 14:57:11 +01:00
committed by Markus Klotzbuecher
parent d8d9de1a02
commit 8139567b60
2 changed files with 12 additions and 3 deletions
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13
cpu/mpc8xx/serial.c
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@@ -227,8 +227,17 @@ static int smc_init (void)
sp->smc_smcm = 0; sp->smc_smcm = 0;
sp->smc_smce = 0xff; sp->smc_smce = 0xff;
#ifdef CFG_SPC1920_SMC1_CLK4 /* clock source is PLD */ #ifdef CFG_SPC1920_SMC1_CLK4
*((volatile uchar *) CFG_SPC1920_PLD_BASE+6) = 0xff; /* clock source is PLD */
/* set freq to 19200 Baud */
*((volatile uchar *) CFG_SPC1920_PLD_BASE+6) = 0x3;
/* configure clk4 as input */
im->im_ioport.iop_pdpar |= 0x800;
im->im_ioport.iop_pddir &= ~0x800;
cp->cp_simode = 0x0000;
cp->cp_simode |= 0x7000;
#else #else
/* Set up the baud rate generator */ /* Set up the baud rate generator */
smc_setbrg (); smc_setbrg ();

2
include/configs/spc1920.h
View File

@@ -44,7 +44,7 @@
#define CONFIG_BAUDRATE 19200 #define CONFIG_BAUDRATE 19200
/* use PLD CLK4 instead of brg */ /* use PLD CLK4 instead of brg */
#undef CFG_SPC1920_SMC1_CLK4 #define CFG_SPC1920_SMC1_CLK4
#define CONFIG_8xx_OSCLK 10000000 /* 10 MHz oscillator on EXTCLK */ #define CONFIG_8xx_OSCLK 10000000 /* 10 MHz oscillator on EXTCLK */
#define CONFIG_8xx_CPUCLK_DEFAULT 50000000 #define CONFIG_8xx_CPUCLK_DEFAULT 50000000