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- // SPDX-License-Identifier: GPL-2.0
- /***************************************************************************/
- /*
- * m5249.c -- platform support for ColdFire 5249 based boards
- *
- * Copyright (C) 2002, Greg Ungerer ([email protected])
- */
- /***************************************************************************/
- #include <linux/clkdev.h>
- #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);
- struct clk_lookup m5249_clk_lookup[] = {
- CLKDEV_INIT(NULL, "pll.0", &clk_pll),
- CLKDEV_INIT(NULL, "sys.0", &clk_sys),
- CLKDEV_INIT("mcftmr.0", NULL, &clk_sys),
- CLKDEV_INIT("mcftmr.1", NULL, &clk_sys),
- CLKDEV_INIT("mcfuart.0", NULL, &clk_sys),
- CLKDEV_INIT("mcfuart.1", NULL, &clk_sys),
- CLKDEV_INIT("mcfqspi.0", NULL, &clk_sys),
- CLKDEV_INIT("imx1-i2c.0", NULL, &clk_sys),
- CLKDEV_INIT("imx1-i2c.1", NULL, &clk_sys),
- };
- /***************************************************************************/
- #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();
- clkdev_add_table(m5249_clk_lookup, ARRAY_SIZE(m5249_clk_lookup));
- }
- /***************************************************************************/
- static int __init init_BSP(void)
- {
- platform_add_devices(m5249_devices, ARRAY_SIZE(m5249_devices));
- return 0;
- }
- arch_initcall(init_BSP);
- /***************************************************************************/
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