arch/m68k/platform/coldfire/m523x.c

   1 /***************************************************************************/
   2
   3 /*
   4  *      linux/arch/m68knommu/platform/523x/config.c
   5  *
   6  *      Sub-architcture dependent initialization code for the Freescale
   7  *      523x CPUs.
   8  *
   9  *      Copyright (C) 1999-2005, Greg Ungerer (gerg@snapgear.com)
  10  *      Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com)
  11  */
  12
  13 /***************************************************************************/
  14
  15 #include <linux/kernel.h>
  16 #include <linux/param.h>
  17 #include <linux/init.h>
  18 #include <linux/io.h>
  19 #include <asm/machdep.h>
  20 #include <asm/coldfire.h>
  21 #include <asm/mcfsim.h>
  22 #include <asm/mcfgpio.h>
  23
  24 /***************************************************************************/
  25
  26 struct mcf_gpio_chip mcf_gpio_chips[] = {
  27         MCFGPS(PIRQ, 1, 7, MCFEPORT_EPDDR, MCFEPORT_EPDR, MCFEPORT_EPPDR),
  28         MCFGPF(ADDR, 13, 3),
  29         MCFGPF(DATAH, 16, 8),
  30         MCFGPF(DATAL, 24, 8),
  31         MCFGPF(BUSCTL, 32, 8),
  32         MCFGPF(BS, 40, 4),
  33         MCFGPF(CS, 49, 7),
  34         MCFGPF(SDRAM, 56, 6),
  35         MCFGPF(FECI2C, 64, 4),
  36         MCFGPF(UARTH, 72, 2),
  37         MCFGPF(UARTL, 80, 8),
  38         MCFGPF(QSPI, 88, 5),
  39         MCFGPF(TIMER, 96, 8),
  40         MCFGPF(ETPU, 104, 3),
  41 };
  42
  43 unsigned int mcf_gpio_chips_size = ARRAY_SIZE(mcf_gpio_chips);
  44
  45 /***************************************************************************/
  46
  47 #if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
  48
  49 static void __init m523x_qspi_init(void)
  50 {
  51         u16 par;
  52
  53         /* setup QSPS pins for QSPI with gpio CS control */
  54         writeb(0x1f, MCFGPIO_PAR_QSPI);
  55         /* and CS2 & CS3 as gpio */
  56         par = readw(MCFGPIO_PAR_TIMER);
  57         par &= 0x3f3f;
  58         writew(par, MCFGPIO_PAR_TIMER);
  59 }
  60
  61 #endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */
  62
  63 /***************************************************************************/
  64
  65 static void __init m523x_fec_init(void)
  66 {
  67         u16 par;
  68         u8 v;
  69
  70         /* Set multi-function pins to ethernet use */
  71         par = readw(MCF_IPSBAR + 0x100082);
  72         writew(par | 0xf00, MCF_IPSBAR + 0x100082);
  73         v = readb(MCF_IPSBAR + 0x100078);
  74         writeb(v | 0xc0, MCF_IPSBAR + 0x100078);
  75 }
  76
  77 /***************************************************************************/
  78
  79 void __init config_BSP(char *commandp, int size)
  80 {
  81         mach_sched_init = hw_timer_init;
  82         m523x_fec_init();
  83 #if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
  84         m523x_qspi_init();
  85 #endif
  86 }
  87
  88 /***************************************************************************/