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linux-pinenote/arch/m68k/coldfire/m5441x.c

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m68knommu: Add support for the Coldfire m5441x. Add support for the Coldfire 5441x (54410/54415/54416/54417/54418). Currently we only support noMMU mode. It requires the PIT patch posted previously as it uses the PIT instead of the dma timer as a clock source so we can get all that GENERIC_CLOCKEVENTS goodness. It also adds some simple clk definitions and very simple minded power management. The gpio code is tweeked and some additional devices are added to devices.c. The Makefile uses -mv4e as apparently, the only difference a v4m (m5441x) and a v4e is the later has a FPU, which I don't think should matter to us in the kernel. Signed-off-by: Steven King <sfking@fdwdc.com> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-06-06 14:28:31 -07:00
/*
* m5441x.c -- support for Coldfire m5441x processors
*
* (C) Copyright Steven King <sfking@fdwdc.com>
*/
#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/mcfuart.h>
#include <asm/mcfdma.h>
#include <asm/mcfclk.h>
DEFINE_CLK(0, "flexbus", 2, MCF_CLK);
DEFINE_CLK(0, "mcfcan.0", 8, MCF_CLK);
DEFINE_CLK(0, "mcfcan.1", 9, MCF_CLK);
DEFINE_CLK(0, "mcfi2c.1", 14, MCF_CLK);
DEFINE_CLK(0, "mcfdspi.1", 15, MCF_CLK);
DEFINE_CLK(0, "edma", 17, MCF_CLK);
DEFINE_CLK(0, "intc.0", 18, MCF_CLK);
DEFINE_CLK(0, "intc.1", 19, MCF_CLK);
DEFINE_CLK(0, "intc.2", 20, MCF_CLK);
DEFINE_CLK(0, "mcfi2c.0", 22, MCF_CLK);
DEFINE_CLK(0, "mcfdspi.0", 23, MCF_CLK);
DEFINE_CLK(0, "mcfuart.0", 24, MCF_BUSCLK);
DEFINE_CLK(0, "mcfuart.1", 25, MCF_BUSCLK);
DEFINE_CLK(0, "mcfuart.2", 26, MCF_BUSCLK);
DEFINE_CLK(0, "mcfuart.3", 27, MCF_BUSCLK);
DEFINE_CLK(0, "mcftmr.0", 28, MCF_CLK);
DEFINE_CLK(0, "mcftmr.1", 29, MCF_CLK);
DEFINE_CLK(0, "mcftmr.2", 30, MCF_CLK);
DEFINE_CLK(0, "mcftmr.3", 31, MCF_CLK);
DEFINE_CLK(0, "mcfpit.0", 32, MCF_CLK);
DEFINE_CLK(0, "mcfpit.1", 33, MCF_CLK);
DEFINE_CLK(0, "mcfpit.2", 34, MCF_CLK);
DEFINE_CLK(0, "mcfpit.3", 35, MCF_CLK);
DEFINE_CLK(0, "mcfeport.0", 37, MCF_CLK);
DEFINE_CLK(0, "mcfadc.0", 38, MCF_CLK);
DEFINE_CLK(0, "mcfdac.0", 39, MCF_CLK);
DEFINE_CLK(0, "mcfrtc.0", 42, MCF_CLK);
DEFINE_CLK(0, "mcfsim.0", 43, MCF_CLK);
DEFINE_CLK(0, "mcfusb-otg.0", 44, MCF_CLK);
DEFINE_CLK(0, "mcfusb-host.0", 45, MCF_CLK);
DEFINE_CLK(0, "mcfddr-sram.0", 46, MCF_CLK);
DEFINE_CLK(0, "mcfssi.0", 47, MCF_CLK);
DEFINE_CLK(0, "pll.0", 48, MCF_CLK);
DEFINE_CLK(0, "mcfrng.0", 49, MCF_CLK);
DEFINE_CLK(0, "mcfssi.1", 50, MCF_CLK);
DEFINE_CLK(0, "mcfsdhc.0", 51, MCF_CLK);
DEFINE_CLK(0, "enet-fec.0", 53, MCF_CLK);
DEFINE_CLK(0, "enet-fec.1", 54, MCF_CLK);
DEFINE_CLK(0, "switch.0", 55, MCF_CLK);
DEFINE_CLK(0, "switch.1", 56, MCF_CLK);
DEFINE_CLK(0, "nand.0", 63, MCF_CLK);
DEFINE_CLK(1, "mcfow.0", 2, MCF_CLK);
DEFINE_CLK(1, "mcfi2c.2", 4, MCF_CLK);
DEFINE_CLK(1, "mcfi2c.3", 5, MCF_CLK);
DEFINE_CLK(1, "mcfi2c.4", 6, MCF_CLK);
DEFINE_CLK(1, "mcfi2c.5", 7, MCF_CLK);
DEFINE_CLK(1, "mcfuart.4", 24, MCF_BUSCLK);
DEFINE_CLK(1, "mcfuart.5", 25, MCF_BUSCLK);
DEFINE_CLK(1, "mcfuart.6", 26, MCF_BUSCLK);
DEFINE_CLK(1, "mcfuart.7", 27, MCF_BUSCLK);
DEFINE_CLK(1, "mcfuart.8", 28, MCF_BUSCLK);
DEFINE_CLK(1, "mcfuart.9", 29, MCF_BUSCLK);
DEFINE_CLK(1, "mcfpwm.0", 34, MCF_BUSCLK);
DEFINE_CLK(1, "sys.0", 36, MCF_BUSCLK);
DEFINE_CLK(1, "gpio.0", 37, MCF_BUSCLK);
struct clk *mcf_clks[] = {
&__clk_0_2,
&__clk_0_8,
&__clk_0_9,
&__clk_0_14,
&__clk_0_15,
&__clk_0_17,
&__clk_0_18,
&__clk_0_19,
&__clk_0_20,
&__clk_0_22,
&__clk_0_23,
&__clk_0_24,
&__clk_0_25,
&__clk_0_26,
&__clk_0_27,
&__clk_0_28,
&__clk_0_29,
&__clk_0_30,
&__clk_0_31,
&__clk_0_32,
&__clk_0_33,
&__clk_0_34,
&__clk_0_35,
&__clk_0_37,
&__clk_0_38,
&__clk_0_39,
&__clk_0_42,
&__clk_0_43,
&__clk_0_44,
&__clk_0_45,
&__clk_0_46,
&__clk_0_47,
&__clk_0_48,
&__clk_0_49,
&__clk_0_50,
&__clk_0_51,
&__clk_0_53,
&__clk_0_54,
&__clk_0_55,
&__clk_0_56,
&__clk_0_63,
&__clk_1_2,
&__clk_1_4,
&__clk_1_5,
&__clk_1_6,
&__clk_1_7,
&__clk_1_24,
&__clk_1_25,
&__clk_1_26,
&__clk_1_27,
&__clk_1_28,
&__clk_1_29,
&__clk_1_34,
&__clk_1_36,
&__clk_1_37,
NULL,
};
static struct clk * const enable_clks[] __initconst = {
/* make sure these clocks are enabled */
&__clk_0_18, /* intc0 */
&__clk_0_19, /* intc0 */
&__clk_0_20, /* intc0 */
&__clk_0_24, /* uart0 */
&__clk_0_25, /* uart1 */
&__clk_0_26, /* uart2 */
&__clk_0_27, /* uart3 */
&__clk_0_33, /* pit.1 */
&__clk_0_37, /* eport */
&__clk_0_48, /* pll */
&__clk_1_36, /* CCM/reset module/Power management */
&__clk_1_37, /* gpio */
};
static struct clk * const disable_clks[] __initconst = {
&__clk_0_8, /* can.0 */
&__clk_0_9, /* can.1 */
&__clk_0_14, /* i2c.1 */
&__clk_0_15, /* dspi.1 */
&__clk_0_17, /* eDMA */
&__clk_0_22, /* i2c.0 */
&__clk_0_23, /* dspi.0 */
&__clk_0_28, /* tmr.1 */
&__clk_0_29, /* tmr.2 */
&__clk_0_30, /* tmr.2 */
&__clk_0_31, /* tmr.3 */
&__clk_0_32, /* pit.0 */
&__clk_0_34, /* pit.2 */
&__clk_0_35, /* pit.3 */
&__clk_0_38, /* adc */
&__clk_0_39, /* dac */
&__clk_0_44, /* usb otg */
&__clk_0_45, /* usb host */
&__clk_0_47, /* ssi.0 */
&__clk_0_49, /* rng */
&__clk_0_50, /* ssi.1 */
&__clk_0_51, /* eSDHC */
&__clk_0_53, /* enet-fec */
&__clk_0_54, /* enet-fec */
&__clk_0_55, /* switch.0 */
&__clk_0_56, /* switch.1 */
&__clk_1_2, /* 1-wire */
&__clk_1_4, /* i2c.2 */
&__clk_1_5, /* i2c.3 */
&__clk_1_6, /* i2c.4 */
&__clk_1_7, /* i2c.5 */
&__clk_1_24, /* uart 4 */
&__clk_1_25, /* uart 5 */
&__clk_1_26, /* uart 6 */
&__clk_1_27, /* uart 7 */
&__clk_1_28, /* uart 8 */
&__clk_1_29, /* uart 9 */
};
static void __init m5441x_clk_init(void)
{
unsigned i;
for (i = 0; i < ARRAY_SIZE(enable_clks); ++i)
__clk_init_enabled(enable_clks[i]);
/* make sure these clocks are disabled */
for (i = 0; i < ARRAY_SIZE(disable_clks); ++i)
__clk_init_disabled(disable_clks[i]);
}
static void __init m5441x_uarts_init(void)
{
__raw_writeb(0x0f, MCFGPIO_PAR_UART0);
__raw_writeb(0x00, MCFGPIO_PAR_UART1);
__raw_writeb(0x00, MCFGPIO_PAR_UART2);
}
static void __init m5441x_fec_init(void)
{
__raw_writeb(0x03, MCFGPIO_PAR_FEC);
}
void __init config_BSP(char *commandp, int size)
{
m5441x_clk_init();
mach_sched_init = hw_timer_init;
m5441x_uarts_init();
m5441x_fec_init();
}
m68knommu: Add rtc device for m5441x. Add definitions for the m5441x rtc device and an init_BSP function to the m5441x device code. Signed-off-by: Steven King <sfking@fdwdc.com>
2012-06-17 01:03:38 -07:00
#if IS_ENABLED(CONFIG_RTC_DRV_M5441x)
static struct resource m5441x_rtc_resources[] = {
{
.start = MCFRTC_BASE,
.end = MCFRTC_BASE + MCFRTC_SIZE - 1,
.flags = IORESOURCE_MEM,
},
{
.start = MCF_IRQ_RTC,
.end = MCF_IRQ_RTC,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device m5441x_rtc = {
.name = "mcfrtc",
.id = 0,
.resource = m5441x_rtc_resources,
.num_resources = ARRAY_SIZE(m5441x_rtc_resources),
};
#endif
static struct platform_device *m5441x_devices[] __initdata = {
#if IS_ENABLED(CONFIG_RTC_DRV_M5441x)
&m5441x_rtc,
#endif
};
static int __init init_BSP(void)
{
platform_add_devices(m5441x_devices, ARRAY_SIZE(m5441x_devices));
return 0;
}
arch_initcall(init_BSP);
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