arch/m68k/coldfire/m5206.c

   1 /***************************************************************************/
   2
   3 /*
   4  *      m5206.c  -- platform support for ColdFire 5206 based boards
   5  *
   6  *      Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
   7  *      Copyright (C) 2000-2001, Lineo Inc. (www.lineo.com)
   8  */
   9
  10 /***************************************************************************/
  11
  12 #include <linux/kernel.h>
  13 #include <linux/param.h>
  14 #include <linux/init.h>
  15 #include <linux/io.h>
  16 #include <asm/machdep.h>
  17 #include <asm/coldfire.h>
  18 #include <asm/mcfsim.h>
  19 #include <asm/mcfclk.h>
  20
  21 /***************************************************************************/
  22
  23 DEFINE_CLK(pll, "pll.0", MCF_CLK);
  24 DEFINE_CLK(sys, "sys.0", MCF_BUSCLK);
  25 DEFINE_CLK(mcftmr0, "mcftmr.0", MCF_BUSCLK);
  26 DEFINE_CLK(mcftmr1, "mcftmr.1", MCF_BUSCLK);
  27 DEFINE_CLK(mcfuart0, "mcfuart.0", MCF_BUSCLK);
  28 DEFINE_CLK(mcfuart1, "mcfuart.1", MCF_BUSCLK);
  29 DEFINE_CLK(mcfi2c0, "imx1-i2c.0", MCF_BUSCLK);
  30
  31 struct clk *mcf_clks[] = {
  32         &clk_pll,
  33         &clk_sys,
  34         &clk_mcftmr0,
  35         &clk_mcftmr1,
  36         &clk_mcfuart0,
  37         &clk_mcfuart1,
  38         &clk_mcfi2c0,
  39         NULL
  40 };
  41
  42 /***************************************************************************/
  43
  44 static void __init m5206_i2c_init(void)
  45 {
  46 #if IS_ENABLED(CONFIG_I2C_IMX)
  47         writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL5 | MCFSIM_ICR_PRI0,
  48                MCFSIM_I2CICR);
  49         mcf_mapirq2imr(MCF_IRQ_I2C0, MCFINTC_I2C);
  50 #endif /* IS_ENABLED(CONFIG_I2C_IMX) */
  51 }
  52
  53 void __init config_BSP(char *commandp, int size)
  54 {
  55 #if defined(CONFIG_NETtel)
  56         /* Copy command line from FLASH to local buffer... */
  57         memcpy(commandp, (char *) 0xf0004000, size);
  58         commandp[size-1] = 0;
  59 #endif /* CONFIG_NETtel */
  60
  61         mach_sched_init = hw_timer_init;
  62
  63         /* Only support the external interrupts on their primary level */
  64         mcf_mapirq2imr(25, MCFINTC_EINT1);
  65         mcf_mapirq2imr(28, MCFINTC_EINT4);
  66         mcf_mapirq2imr(31, MCFINTC_EINT7);
  67         m5206_i2c_init();
  68 }
  69
  70 /***************************************************************************/