projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
| b5aaf3f7 GU |
2 | /***************************************************************************/ |
| 3 | ||
| 4 | /* | |
| ece9ae65 | 5 | * m523x.c -- platform support for ColdFire 523x based boards |
| b5aaf3f7 | 6 | * |
| 25985edc | 7 | * Sub-architcture dependent initialization code for the Freescale |
| b5aaf3f7 GU |
8 | * 523x CPUs. |
| 9 | * | |
| 10 | * Copyright (C) 1999-2005, Greg Ungerer (gerg@snapgear.com) | |
| 11 | * Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com) | |
| 12 | */ | |
| 13 | ||
| 14 | /***************************************************************************/ | |
| 15 | ||
| 63aadb77 | 16 | #include <linux/clkdev.h> |
| b5aaf3f7 | 17 | #include <linux/kernel.h> |
| b5aaf3f7 GU |
18 | #include <linux/param.h> |
| 19 | #include <linux/init.h> | |
| 4b61a353 | 20 | #include <linux/io.h> |
| b5aaf3f7 GU |
21 | #include <asm/machdep.h> |
| 22 | #include <asm/coldfire.h> | |
| 23 | #include <asm/mcfsim.h> | |
| a0f8f8c8 GU |
24 | #include <asm/mcfclk.h> |
| 25 | ||
| 26 | /***************************************************************************/ | |
| 27 | ||
| 28 | DEFINE_CLK(pll, "pll.0", MCF_CLK); | |
| 29 | DEFINE_CLK(sys, "sys.0", MCF_BUSCLK); | |
| 63aadb77 | 30 | |
| 90ebf501 | 31 | static struct clk_lookup m523x_clk_lookup[] = { |
| 63aadb77 AB |
32 | CLKDEV_INIT(NULL, "pll.0", &clk_pll), |
| 33 | CLKDEV_INIT(NULL, "sys.0", &clk_sys), | |
| 34 | CLKDEV_INIT("mcfpit.0", NULL, &clk_pll), | |
| 35 | CLKDEV_INIT("mcfpit.1", NULL, &clk_pll), | |
| 36 | CLKDEV_INIT("mcfpit.2", NULL, &clk_pll), | |
| 37 | CLKDEV_INIT("mcfpit.3", NULL, &clk_pll), | |
| 38 | CLKDEV_INIT("mcfuart.0", NULL, &clk_sys), | |
| 39 | CLKDEV_INIT("mcfuart.1", NULL, &clk_sys), | |
| 40 | CLKDEV_INIT("mcfuart.2", NULL, &clk_sys), | |
| 41 | CLKDEV_INIT("mcfqspi.0", NULL, &clk_sys), | |
| 42 | CLKDEV_INIT("fec.0", NULL, &clk_sys), | |
| 43 | CLKDEV_INIT("imx1-i2c.0", NULL, &clk_sys), | |
| a0f8f8c8 | 44 | }; |
| b5aaf3f7 GU |
45 | |
| 46 | /***************************************************************************/ | |
| 47 | ||
| 91d60417 SK |
48 | static void __init m523x_qspi_init(void) |
| 49 | { | |
| 151d14f4 | 50 | #if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) |
| 91d60417 SK |
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); | |
| 83ca6009 | 59 | #endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */ |
| 151d14f4 | 60 | } |
| b5aaf3f7 | 61 | |
| 4b61a353 GU |
62 | /***************************************************************************/ |
| 63 | ||
| 2d24b532 SK |
64 | static void __init m523x_i2c_init(void) |
| 65 | { | |
| 66 | #if IS_ENABLED(CONFIG_I2C_IMX) | |
| 67 | u8 par; | |
| 68 | ||
| 69 | /* setup Port AS Pin Assignment Register for I2C */ | |
| 70 | /* set PASPA0 to SCL and PASPA1 to SDA */ | |
| 71 | par = readb(MCFGPIO_PAR_FECI2C); | |
| 72 | par |= 0x0f; | |
| 73 | writeb(par, MCFGPIO_PAR_FECI2C); | |
| 74 | #endif /* IS_ENABLED(CONFIG_I2C_IMX) */ | |
| 75 | } | |
| 76 | ||
| 77 | /***************************************************************************/ | |
| 78 | ||
| 14c16db3 GU |
79 | static void __init m523x_fec_init(void) |
| 80 | { | |
| 14c16db3 | 81 | /* Set multi-function pins to ethernet use */ |
| 98d9696b | 82 | writeb(readb(MCFGPIO_PAR_FECI2C) | 0xf0, MCFGPIO_PAR_FECI2C); |
| 14c16db3 GU |
83 | } |
| 84 | ||
| 85 | /***************************************************************************/ | |
| 86 | ||
| 4b61a353 | 87 | void __init config_BSP(char *commandp, int size) |
| b5aaf3f7 | 88 | { |
| 35aefb26 | 89 | mach_sched_init = hw_timer_init; |
| 2ba168a9 | 90 | m523x_fec_init(); |
| 91d60417 | 91 | m523x_qspi_init(); |
| 2d24b532 | 92 | m523x_i2c_init(); |
| 63aadb77 AB |
93 | |
| 94 | clkdev_add_table(m523x_clk_lookup, ARRAY_SIZE(m523x_clk_lookup)); | |
| 4b61a353 GU |
95 | } |
| 96 | ||
| 4b61a353 | 97 | /***************************************************************************/ |