Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | /***************************************************************************/ |
| 3 | |
| 4 | /* |
Greg Ungerer | ece9ae6 | 2014-08-19 11:55:24 +1000 | [diff] [blame] | 5 | * m528x.c -- platform support for ColdFire 528x based boards |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | * |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 7 | * Sub-architcture dependent initialization code for the Freescale |
Greg Ungerer | 980f923 | 2009-04-28 14:24:25 +1000 | [diff] [blame] | 8 | * 5280, 5281 and 5282 CPUs. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | * |
| 10 | * Copyright (C) 1999-2003, Greg Ungerer (gerg@snapgear.com) |
| 11 | * Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com) |
| 12 | */ |
| 13 | |
| 14 | /***************************************************************************/ |
| 15 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | #include <linux/param.h> |
| 18 | #include <linux/init.h> |
Greg Ungerer | eb49e90 | 2008-02-01 17:34:50 +1000 | [diff] [blame] | 19 | #include <linux/platform_device.h> |
Greg Ungerer | eb49e90 | 2008-02-01 17:34:50 +1000 | [diff] [blame] | 20 | #include <linux/io.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include <asm/machdep.h> |
| 22 | #include <asm/coldfire.h> |
| 23 | #include <asm/mcfsim.h> |
Greg Ungerer | eb49e90 | 2008-02-01 17:34:50 +1000 | [diff] [blame] | 24 | #include <asm/mcfuart.h> |
Greg Ungerer | 87f3776 | 2012-07-13 16:04:22 +1000 | [diff] [blame] | 25 | #include <asm/mcfclk.h> |
| 26 | |
| 27 | /***************************************************************************/ |
| 28 | |
| 29 | DEFINE_CLK(pll, "pll.0", MCF_CLK); |
| 30 | DEFINE_CLK(sys, "sys.0", MCF_BUSCLK); |
| 31 | DEFINE_CLK(mcfpit0, "mcfpit.0", MCF_CLK); |
| 32 | DEFINE_CLK(mcfpit1, "mcfpit.1", MCF_CLK); |
| 33 | DEFINE_CLK(mcfpit2, "mcfpit.2", MCF_CLK); |
| 34 | DEFINE_CLK(mcfpit3, "mcfpit.3", MCF_CLK); |
| 35 | DEFINE_CLK(mcfuart0, "mcfuart.0", MCF_BUSCLK); |
| 36 | DEFINE_CLK(mcfuart1, "mcfuart.1", MCF_BUSCLK); |
| 37 | DEFINE_CLK(mcfuart2, "mcfuart.2", MCF_BUSCLK); |
Steven King | 7485952 | 2014-05-14 10:06:29 -0700 | [diff] [blame] | 38 | DEFINE_CLK(mcfqspi0, "mcfqspi.0", MCF_BUSCLK); |
Greg Ungerer | 87f3776 | 2012-07-13 16:04:22 +1000 | [diff] [blame] | 39 | DEFINE_CLK(fec0, "fec.0", MCF_BUSCLK); |
Steven King | 2d24b53 | 2014-06-30 09:53:19 -0700 | [diff] [blame] | 40 | DEFINE_CLK(mcfi2c0, "imx1-i2c.0", MCF_BUSCLK); |
Greg Ungerer | 87f3776 | 2012-07-13 16:04:22 +1000 | [diff] [blame] | 41 | |
| 42 | struct clk *mcf_clks[] = { |
| 43 | &clk_pll, |
| 44 | &clk_sys, |
| 45 | &clk_mcfpit0, |
| 46 | &clk_mcfpit1, |
| 47 | &clk_mcfpit2, |
| 48 | &clk_mcfpit3, |
| 49 | &clk_mcfuart0, |
| 50 | &clk_mcfuart1, |
| 51 | &clk_mcfuart2, |
Steven King | 7485952 | 2014-05-14 10:06:29 -0700 | [diff] [blame] | 52 | &clk_mcfqspi0, |
Greg Ungerer | 87f3776 | 2012-07-13 16:04:22 +1000 | [diff] [blame] | 53 | &clk_fec0, |
Steven King | 2d24b53 | 2014-06-30 09:53:19 -0700 | [diff] [blame] | 54 | &clk_mcfi2c0, |
Greg Ungerer | 87f3776 | 2012-07-13 16:04:22 +1000 | [diff] [blame] | 55 | NULL |
| 56 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
| 58 | /***************************************************************************/ |
| 59 | |
Steven King | 91d6041 | 2010-01-22 12:43:03 -0800 | [diff] [blame] | 60 | static void __init m528x_qspi_init(void) |
| 61 | { |
Steven King | 151d14f | 2014-05-14 10:07:55 -0700 | [diff] [blame] | 62 | #if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) |
Steven King | 91d6041 | 2010-01-22 12:43:03 -0800 | [diff] [blame] | 63 | /* setup Port QS for QSPI with gpio CS control */ |
| 64 | __raw_writeb(0x07, MCFGPIO_PQSPAR); |
Steven King | 83ca600 | 2012-05-06 12:22:53 -0700 | [diff] [blame] | 65 | #endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */ |
Steven King | 151d14f | 2014-05-14 10:07:55 -0700 | [diff] [blame] | 66 | } |
Greg Ungerer | eb49e90 | 2008-02-01 17:34:50 +1000 | [diff] [blame] | 67 | |
| 68 | /***************************************************************************/ |
| 69 | |
Steven King | 2d24b53 | 2014-06-30 09:53:19 -0700 | [diff] [blame] | 70 | static void __init m528x_i2c_init(void) |
| 71 | { |
| 72 | #if IS_ENABLED(CONFIG_I2C_IMX) |
| 73 | u16 paspar; |
| 74 | |
| 75 | /* setup Port AS Pin Assignment Register for I2C */ |
| 76 | /* set PASPA0 to SCL and PASPA1 to SDA */ |
| 77 | paspar = readw(MCFGPIO_PASPAR); |
| 78 | paspar |= 0xF; |
| 79 | writew(paspar, MCFGPIO_PASPAR); |
| 80 | #endif /* IS_ENABLED(CONFIG_I2C_IMX) */ |
| 81 | } |
| 82 | |
| 83 | /***************************************************************************/ |
| 84 | |
Greg Ungerer | cae82a8 | 2011-12-24 01:00:48 +1000 | [diff] [blame] | 85 | static void __init m528x_uarts_init(void) |
Greg Ungerer | eb49e90 | 2008-02-01 17:34:50 +1000 | [diff] [blame] | 86 | { |
| 87 | u8 port; |
Greg Ungerer | eb49e90 | 2008-02-01 17:34:50 +1000 | [diff] [blame] | 88 | |
Greg Ungerer | eb49e90 | 2008-02-01 17:34:50 +1000 | [diff] [blame] | 89 | /* make sure PUAPAR is set for UART0 and UART1 */ |
Greg Ungerer | 0371a1c | 2013-03-04 11:51:45 +1000 | [diff] [blame] | 90 | port = readb(MCFGPIO_PUAPAR); |
Greg Ungerer | cae82a8 | 2011-12-24 01:00:48 +1000 | [diff] [blame] | 91 | port |= 0x03 | (0x03 << 2); |
Steven King | eac5794 | 2012-05-21 13:10:19 -0700 | [diff] [blame] | 92 | writeb(port, MCFGPIO_PUAPAR); |
Greg Ungerer | eb49e90 | 2008-02-01 17:34:50 +1000 | [diff] [blame] | 93 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | |
| 95 | /***************************************************************************/ |
| 96 | |
Greg Ungerer | ffba3f4 | 2009-02-26 22:40:38 -0800 | [diff] [blame] | 97 | static void __init m528x_fec_init(void) |
| 98 | { |
Greg Ungerer | ffba3f4 | 2009-02-26 22:40:38 -0800 | [diff] [blame] | 99 | u16 v16; |
| 100 | |
Greg Ungerer | ffba3f4 | 2009-02-26 22:40:38 -0800 | [diff] [blame] | 101 | /* Set multi-function pins to ethernet mode for fec0 */ |
Greg Ungerer | a91f74158 | 2012-09-17 12:20:20 +1000 | [diff] [blame] | 102 | v16 = readw(MCFGPIO_PASPAR); |
| 103 | writew(v16 | 0xf00, MCFGPIO_PASPAR); |
| 104 | writeb(0xc0, MCFGPIO_PEHLPAR); |
Greg Ungerer | ffba3f4 | 2009-02-26 22:40:38 -0800 | [diff] [blame] | 105 | } |
| 106 | |
| 107 | /***************************************************************************/ |
| 108 | |
Steve Bennett | 188a9a4 | 2008-05-01 12:17:08 +1000 | [diff] [blame] | 109 | #ifdef CONFIG_WILDFIRE |
| 110 | void wildfire_halt(void) |
| 111 | { |
| 112 | writeb(0, 0x30000007); |
| 113 | writeb(0x2, 0x30000007); |
| 114 | } |
| 115 | #endif |
| 116 | |
| 117 | #ifdef CONFIG_WILDFIREMOD |
| 118 | void wildfiremod_halt(void) |
| 119 | { |
| 120 | printk(KERN_INFO "WildFireMod hibernating...\n"); |
| 121 | |
| 122 | /* Set portE.5 to Digital IO */ |
Greg Ungerer | 41b39ea | 2016-08-23 21:27:16 +1000 | [diff] [blame] | 123 | writew(readw(MCFGPIO_PEPAR) & ~(1 << (5 * 2)), MCFGPIO_PEPAR); |
Steve Bennett | 188a9a4 | 2008-05-01 12:17:08 +1000 | [diff] [blame] | 124 | |
| 125 | /* Make portE.5 an output */ |
Greg Ungerer | 41b39ea | 2016-08-23 21:27:16 +1000 | [diff] [blame] | 126 | writeb(readb(MCFGPIO_PDDR_E) | (1 << 5), MCFGPIO_PDDR_E); |
Steve Bennett | 188a9a4 | 2008-05-01 12:17:08 +1000 | [diff] [blame] | 127 | |
| 128 | /* Now toggle portE.5 from low to high */ |
Greg Ungerer | 41b39ea | 2016-08-23 21:27:16 +1000 | [diff] [blame] | 129 | writeb(readb(MCFGPIO_PODR_E) & ~(1 << 5), MCFGPIO_PODR_E); |
| 130 | writeb(readb(MCFGPIO_PODR_E) | (1 << 5), MCFGPIO_PODR_E); |
Steve Bennett | 188a9a4 | 2008-05-01 12:17:08 +1000 | [diff] [blame] | 131 | |
| 132 | printk(KERN_EMERG "Failed to hibernate. Halting!\n"); |
| 133 | } |
| 134 | #endif |
| 135 | |
Greg Ungerer | eb49e90 | 2008-02-01 17:34:50 +1000 | [diff] [blame] | 136 | void __init config_BSP(char *commandp, int size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | { |
Steve Bennett | 188a9a4 | 2008-05-01 12:17:08 +1000 | [diff] [blame] | 138 | #ifdef CONFIG_WILDFIRE |
| 139 | mach_halt = wildfire_halt; |
| 140 | #endif |
| 141 | #ifdef CONFIG_WILDFIREMOD |
| 142 | mach_halt = wildfiremod_halt; |
| 143 | #endif |
Greg Ungerer | 35aefb2 | 2012-01-23 15:34:58 +1000 | [diff] [blame] | 144 | mach_sched_init = hw_timer_init; |
Greg Ungerer | eb49e90 | 2008-02-01 17:34:50 +1000 | [diff] [blame] | 145 | m528x_uarts_init(); |
Greg Ungerer | ffba3f4 | 2009-02-26 22:40:38 -0800 | [diff] [blame] | 146 | m528x_fec_init(); |
Steven King | 91d6041 | 2010-01-22 12:43:03 -0800 | [diff] [blame] | 147 | m528x_qspi_init(); |
Steven King | 2d24b53 | 2014-06-30 09:53:19 -0700 | [diff] [blame] | 148 | m528x_i2c_init(); |
Greg Ungerer | eb49e90 | 2008-02-01 17:34:50 +1000 | [diff] [blame] | 149 | } |
| 150 | |
Greg Ungerer | eb49e90 | 2008-02-01 17:34:50 +1000 | [diff] [blame] | 151 | /***************************************************************************/ |