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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/m68k/coldfire/m5307.c
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// SPDX-License-Identifier: GPL-2.0

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/***************************************************************************/

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/*

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 *	m5307.c  -- platform support for ColdFire 5307 based boards

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 *

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 *	Copyright (C) 1999-2002, Greg Ungerer ([email protected])

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 *	Copyright (C) 2000, Lineo (www.lineo.com)

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 */

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/***************************************************************************/

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#include <linux/clkdev.h>

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#include <linux/kernel.h>

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#include <linux/param.h>

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#include <linux/init.h>

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#include <linux/io.h>

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#include <asm/machdep.h>

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#include <asm/coldfire.h>

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#include <asm/mcfsim.h>

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#include <asm/mcfwdebug.h>

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#include <asm/mcfclk.h>

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/***************************************************************************/

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/*

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 *	Some platforms need software versions of the GPIO data registers.

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 */

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unsigned short ppdata;

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unsigned char ledbank = 0xff;

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/***************************************************************************/

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DEFINE_CLK(pll, "pll.0", MCF_CLK);

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DEFINE_CLK(sys, "sys.0", MCF_BUSCLK);

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static struct clk_lookup m5307_clk_lookup[] = {

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	CLKDEV_INIT(NULL, "pll.0", &clk_pll),

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	CLKDEV_INIT(NULL, "sys.0", &clk_sys),

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	CLKDEV_INIT("mcftmr.0", NULL, &clk_sys),

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	CLKDEV_INIT("mcftmr.1", NULL, &clk_sys),

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	CLKDEV_INIT("mcfuart.0", NULL, &clk_sys),

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	CLKDEV_INIT("mcfuart.1", NULL, &clk_sys),

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	CLKDEV_INIT("imx1-i2c.0", NULL, &clk_sys),

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};

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/***************************************************************************/

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static void __init m5307_i2c_init(void)

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{

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#if IS_ENABLED(CONFIG_I2C_IMX)

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	writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL5 | MCFSIM_ICR_PRI0,

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	       MCFSIM_I2CICR);

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	mcf_mapirq2imr(MCF_IRQ_I2C0, MCFINTC_I2C);

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#endif /* IS_ENABLED(CONFIG_I2C_IMX) */

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}

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/***************************************************************************/

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void __init config_BSP(char *commandp, int size)

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{

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#if defined(CONFIG_NETtel) || \

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    defined(CONFIG_SECUREEDGEMP3) || defined(CONFIG_CLEOPATRA)

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	/* Copy command line from FLASH to local buffer... */

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	memcpy(commandp, (char *) 0xf0004000, size);

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	commandp[size-1] = 0;

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#endif

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	mach_sched_init = hw_timer_init;

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	/* Only support the external interrupts on their primary level */

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	mcf_mapirq2imr(25, MCFINTC_EINT1);

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	mcf_mapirq2imr(27, MCFINTC_EINT3);

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	mcf_mapirq2imr(29, MCFINTC_EINT5);

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	mcf_mapirq2imr(31, MCFINTC_EINT7);

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#ifdef CONFIG_BDM_DISABLE

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	/*

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	 * Disable the BDM clocking.  This also turns off most of the rest of

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	 * the BDM device.  This is good for EMC reasons. This option is not

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	 * incompatible with the memory protection option.

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	 */

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	wdebug(MCFDEBUG_CSR, MCFDEBUG_CSR_PSTCLK);

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#endif

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	m5307_i2c_init();

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	clkdev_add_table(m5307_clk_lookup, ARRAY_SIZE(m5307_clk_lookup));

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}

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/***************************************************************************/

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