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147 lines
3.8 KiB
147 lines
3.8 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/***************************************************************************/ |
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/* |
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* m5249.c -- platform support for ColdFire 5249 based boards |
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* |
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* Copyright (C) 2002, Greg Ungerer ([email protected]) |
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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 <linux/platform_device.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/mcfclk.h> |
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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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struct clk_lookup m5249_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("mcfqspi.0", NULL, &clk_sys), |
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CLKDEV_INIT("imx1-i2c.0", NULL, &clk_sys), |
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CLKDEV_INIT("imx1-i2c.1", NULL, &clk_sys), |
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}; |
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/***************************************************************************/ |
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#ifdef CONFIG_M5249C3 |
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static struct resource m5249_smc91x_resources[] = { |
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{ |
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.start = 0xe0000300, |
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.end = 0xe0000300 + 0x100, |
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.flags = IORESOURCE_MEM, |
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}, |
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{ |
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.start = MCF_IRQ_GPIO6, |
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.end = MCF_IRQ_GPIO6, |
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.flags = IORESOURCE_IRQ, |
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}, |
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}; |
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static struct platform_device m5249_smc91x = { |
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.name = "smc91x", |
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.id = 0, |
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.num_resources = ARRAY_SIZE(m5249_smc91x_resources), |
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.resource = m5249_smc91x_resources, |
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}; |
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#endif /* CONFIG_M5249C3 */ |
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static struct platform_device *m5249_devices[] __initdata = { |
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#ifdef CONFIG_M5249C3 |
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&m5249_smc91x, |
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#endif |
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}; |
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/***************************************************************************/ |
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static void __init m5249_qspi_init(void) |
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{ |
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#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) |
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/* QSPI irq setup */ |
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writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL4 | MCFSIM_ICR_PRI0, |
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MCFSIM_QSPIICR); |
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mcf_mapirq2imr(MCF_IRQ_QSPI, MCFINTC_QSPI); |
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#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */ |
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} |
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/***************************************************************************/ |
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static void __init m5249_i2c_init(void) |
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{ |
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#if IS_ENABLED(CONFIG_I2C_IMX) |
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u32 r; |
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/* first I2C controller uses regular irq setup */ |
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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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/* second I2C controller is completely different */ |
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r = readl(MCFINTC2_INTPRI_REG(MCF_IRQ_I2C1)); |
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r &= ~MCFINTC2_INTPRI_BITS(0xf, MCF_IRQ_I2C1); |
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r |= MCFINTC2_INTPRI_BITS(0x5, MCF_IRQ_I2C1); |
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writel(r, MCFINTC2_INTPRI_REG(MCF_IRQ_I2C1)); |
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#endif /* CONFIG_I2C_IMX */ |
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} |
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/***************************************************************************/ |
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#ifdef CONFIG_M5249C3 |
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static void __init m5249_smc91x_init(void) |
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{ |
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u32 gpio; |
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/* Set the GPIO line as interrupt source for smc91x device */ |
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gpio = readl(MCFSIM2_GPIOINTENABLE); |
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writel(gpio | 0x40, MCFSIM2_GPIOINTENABLE); |
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gpio = readl(MCFINTC2_INTPRI5); |
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writel(gpio | 0x04000000, MCFINTC2_INTPRI5); |
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} |
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#endif /* CONFIG_M5249C3 */ |
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/***************************************************************************/ |
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void __init config_BSP(char *commandp, int size) |
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{ |
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mach_sched_init = hw_timer_init; |
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#ifdef CONFIG_M5249C3 |
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m5249_smc91x_init(); |
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#endif |
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m5249_qspi_init(); |
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m5249_i2c_init(); |
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clkdev_add_table(m5249_clk_lookup, ARRAY_SIZE(m5249_clk_lookup)); |
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} |
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/***************************************************************************/ |
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static int __init init_BSP(void) |
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{ |
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platform_add_devices(m5249_devices, ARRAY_SIZE(m5249_devices)); |
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return 0; |
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} |
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arch_initcall(init_BSP); |
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/***************************************************************************/
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