| /***************************************************************************/ |
| |
| /* |
| * 525x.c -- platform support for ColdFire 525x based boards |
| * |
| * Copyright (C) 2012, Steven King <sfking@fdwdc.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); |
| |
| struct clk *mcf_clks[] = { |
| &clk_pll, |
| &clk_sys, |
| &clk_mcftmr0, |
| &clk_mcftmr1, |
| &clk_mcfuart0, |
| &clk_mcfuart1, |
| &clk_mcfqspi0, |
| NULL |
| }; |
| |
| /***************************************************************************/ |
| |
| static void __init m525x_qspi_init(void) |
| { |
| #if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) |
| /* set the GPIO function for the qspi cs gpios */ |
| /* FIXME: replace with pinmux/pinctl support */ |
| u32 f = readl(MCFSIM2_GPIOFUNC); |
| f |= (1 << MCFQSPI_CS2) | (1 << MCFQSPI_CS1) | (1 << MCFQSPI_CS0); |
| writel(f, MCFSIM2_GPIOFUNC); |
| |
| /* 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 m525x_i2c_init(void) |
| { |
| #if IS_ENABLED(CONFIG_I2C_COLDFIRE) |
| 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 /* IS_ENABLED(CONFIG_I2C_COLDFIRE) */ |
| } |
| |
| /***************************************************************************/ |
| |
| void __init config_BSP(char *commandp, int size) |
| { |
| mach_sched_init = hw_timer_init; |
| |
| m525x_qspi_init(); |
| m525x_i2c_init(); |
| } |
| |
| /***************************************************************************/ |
