153 lines
3.7 KiB
C
153 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/***************************************************************************/
|
|
|
|
/*
|
|
* m5249.c -- platform support for ColdFire 5249 based boards
|
|
*
|
|
* Copyright (C) 2002, Greg Ungerer (gerg@snapgear.com)
|
|
*/
|
|
|
|
/***************************************************************************/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/param.h>
|
|
#include <linux/init.h>
|
|
#include <linux/io.h>
|
|
#include <linux/platform_device.h>
|
|
#include <asm/machdep.h>
|
|
#include <asm/coldfire.h>
|
|
#include <asm/mcfsim.h>
|
|
#include <asm/mcfclk.h>
|
|
|
|
/***************************************************************************/
|
|
|
|
DEFINE_CLK(pll, "pll.0", MCF_CLK);
|
|
DEFINE_CLK(sys, "sys.0", MCF_BUSCLK);
|
|
DEFINE_CLK(mcftmr0, "mcftmr.0", MCF_BUSCLK);
|
|
DEFINE_CLK(mcftmr1, "mcftmr.1", MCF_BUSCLK);
|
|
DEFINE_CLK(mcfuart0, "mcfuart.0", MCF_BUSCLK);
|
|
DEFINE_CLK(mcfuart1, "mcfuart.1", MCF_BUSCLK);
|
|
DEFINE_CLK(mcfqspi0, "mcfqspi.0", MCF_BUSCLK);
|
|
DEFINE_CLK(mcfi2c0, "imx1-i2c.0", MCF_BUSCLK);
|
|
DEFINE_CLK(mcfi2c1, "imx1-i2c.1", MCF_BUSCLK);
|
|
|
|
struct clk *mcf_clks[] = {
|
|
&clk_pll,
|
|
&clk_sys,
|
|
&clk_mcftmr0,
|
|
&clk_mcftmr1,
|
|
&clk_mcfuart0,
|
|
&clk_mcfuart1,
|
|
&clk_mcfqspi0,
|
|
&clk_mcfi2c0,
|
|
&clk_mcfi2c1,
|
|
NULL
|
|
};
|
|
|
|
/***************************************************************************/
|
|
|
|
#ifdef CONFIG_M5249C3
|
|
|
|
static struct resource m5249_smc91x_resources[] = {
|
|
{
|
|
.start = 0xe0000300,
|
|
.end = 0xe0000300 + 0x100,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
{
|
|
.start = MCF_IRQ_GPIO6,
|
|
.end = MCF_IRQ_GPIO6,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct platform_device m5249_smc91x = {
|
|
.name = "smc91x",
|
|
.id = 0,
|
|
.num_resources = ARRAY_SIZE(m5249_smc91x_resources),
|
|
.resource = m5249_smc91x_resources,
|
|
};
|
|
|
|
#endif /* CONFIG_M5249C3 */
|
|
|
|
static struct platform_device *m5249_devices[] __initdata = {
|
|
#ifdef CONFIG_M5249C3
|
|
&m5249_smc91x,
|
|
#endif
|
|
};
|
|
|
|
/***************************************************************************/
|
|
|
|
static void __init m5249_qspi_init(void)
|
|
{
|
|
#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
|
|
/* QSPI irq setup */
|
|
writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL4 | MCFSIM_ICR_PRI0,
|
|
MCFSIM_QSPIICR);
|
|
mcf_mapirq2imr(MCF_IRQ_QSPI, MCFINTC_QSPI);
|
|
#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */
|
|
}
|
|
|
|
/***************************************************************************/
|
|
|
|
static void __init m5249_i2c_init(void)
|
|
{
|
|
#if IS_ENABLED(CONFIG_I2C_IMX)
|
|
u32 r;
|
|
|
|
/* first I2C controller uses regular irq setup */
|
|
writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL5 | MCFSIM_ICR_PRI0,
|
|
MCFSIM_I2CICR);
|
|
mcf_mapirq2imr(MCF_IRQ_I2C0, MCFINTC_I2C);
|
|
|
|
/* second I2C controller is completely different */
|
|
r = readl(MCFINTC2_INTPRI_REG(MCF_IRQ_I2C1));
|
|
r &= ~MCFINTC2_INTPRI_BITS(0xf, MCF_IRQ_I2C1);
|
|
r |= MCFINTC2_INTPRI_BITS(0x5, MCF_IRQ_I2C1);
|
|
writel(r, MCFINTC2_INTPRI_REG(MCF_IRQ_I2C1));
|
|
#endif /* CONFIG_I2C_IMX */
|
|
}
|
|
|
|
/***************************************************************************/
|
|
|
|
#ifdef CONFIG_M5249C3
|
|
|
|
static void __init m5249_smc91x_init(void)
|
|
{
|
|
u32 gpio;
|
|
|
|
/* Set the GPIO line as interrupt source for smc91x device */
|
|
gpio = readl(MCFSIM2_GPIOINTENABLE);
|
|
writel(gpio | 0x40, MCFSIM2_GPIOINTENABLE);
|
|
|
|
gpio = readl(MCFINTC2_INTPRI5);
|
|
writel(gpio | 0x04000000, MCFINTC2_INTPRI5);
|
|
}
|
|
|
|
#endif /* CONFIG_M5249C3 */
|
|
|
|
/***************************************************************************/
|
|
|
|
void __init config_BSP(char *commandp, int size)
|
|
{
|
|
mach_sched_init = hw_timer_init;
|
|
|
|
#ifdef CONFIG_M5249C3
|
|
m5249_smc91x_init();
|
|
#endif
|
|
m5249_qspi_init();
|
|
m5249_i2c_init();
|
|
}
|
|
|
|
/***************************************************************************/
|
|
|
|
static int __init init_BSP(void)
|
|
{
|
|
platform_add_devices(m5249_devices, ARRAY_SIZE(m5249_devices));
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(init_BSP);
|
|
|
|
/***************************************************************************/
|