1 /***************************************************************************/ 2 3 /* 4 * m523x.c -- platform support for ColdFire 523x based boards 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/mcfclk.h> 23 24 /***************************************************************************/ 25 26 DEFINE_CLK(pll, "pll.0", MCF_CLK); 27 DEFINE_CLK(sys, "sys.0", MCF_BUSCLK); 28 DEFINE_CLK(mcfpit0, "mcfpit.0", MCF_CLK); 29 DEFINE_CLK(mcfpit1, "mcfpit.1", MCF_CLK); 30 DEFINE_CLK(mcfpit2, "mcfpit.2", MCF_CLK); 31 DEFINE_CLK(mcfpit3, "mcfpit.3", MCF_CLK); 32 DEFINE_CLK(mcfuart0, "mcfuart.0", MCF_BUSCLK); 33 DEFINE_CLK(mcfuart1, "mcfuart.1", MCF_BUSCLK); 34 DEFINE_CLK(mcfuart2, "mcfuart.2", MCF_BUSCLK); 35 DEFINE_CLK(mcfqspi0, "mcfqspi.0", MCF_BUSCLK); 36 DEFINE_CLK(fec0, "fec.0", MCF_BUSCLK); 37 38 struct clk *mcf_clks[] = { 39 &clk_pll, 40 &clk_sys, 41 &clk_mcfpit0, 42 &clk_mcfpit1, 43 &clk_mcfpit2, 44 &clk_mcfpit3, 45 &clk_mcfuart0, 46 &clk_mcfuart1, 47 &clk_mcfuart2, 48 &clk_mcfqspi0, 49 &clk_fec0, 50 NULL 51 }; 52 53 /***************************************************************************/ 54 55 static void __init m523x_qspi_init(void) 56 { 57 #if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) 58 u16 par; 59 60 /* setup QSPS pins for QSPI with gpio CS control */ 61 writeb(0x1f, MCFGPIO_PAR_QSPI); 62 /* and CS2 & CS3 as gpio */ 63 par = readw(MCFGPIO_PAR_TIMER); 64 par &= 0x3f3f; 65 writew(par, MCFGPIO_PAR_TIMER); 66 #endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */ 67 } 68 69 /***************************************************************************/ 70 71 static void __init m523x_fec_init(void) 72 { 73 /* Set multi-function pins to ethernet use */ 74 writeb(readb(MCFGPIO_PAR_FECI2C) | 0xf0, MCFGPIO_PAR_FECI2C); 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 m523x_qspi_init(); 84 } 85 86 /***************************************************************************/ 87