93 строки
2.2 KiB
C
93 строки
2.2 KiB
C
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/*
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*
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* Platform setup for the Keymile mgsuvd board
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*
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* Heiko Schocher <hs@denx.de>
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*
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* Copyright 2008 DENX Software Engineering GmbH
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*
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* This file is licensed under the terms of the GNU General Public License
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* version 2. This program is licensed "as is" without any warranty of any
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* kind, whether express or implied.
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*/
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#include <linux/ioport.h>
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#include <linux/of_platform.h>
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#include <asm/io.h>
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#include <asm/machdep.h>
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#include <asm/processor.h>
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#include <asm/cpm1.h>
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#include <asm/prom.h>
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#include <asm/fs_pd.h>
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#include "mpc8xx.h"
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struct cpm_pin {
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int port, pin, flags;
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};
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static __initdata struct cpm_pin mgsuvd_pins[] = {
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/* SMC1 */
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{CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
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{CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
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/* SCC3 */
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{CPM_PORTA, 10, CPM_PIN_INPUT},
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{CPM_PORTA, 11, CPM_PIN_INPUT},
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{CPM_PORTA, 3, CPM_PIN_INPUT},
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{CPM_PORTA, 2, CPM_PIN_INPUT},
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{CPM_PORTC, 13, CPM_PIN_INPUT},
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};
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static void __init init_ioports(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(mgsuvd_pins); i++) {
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struct cpm_pin *pin = &mgsuvd_pins[i];
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cpm1_set_pin(pin->port, pin->pin, pin->flags);
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}
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setbits16(&mpc8xx_immr->im_ioport.iop_pcso, 0x300);
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cpm1_clk_setup(CPM_CLK_SCC3, CPM_CLK5, CPM_CLK_RX);
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cpm1_clk_setup(CPM_CLK_SCC3, CPM_CLK6, CPM_CLK_TX);
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cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
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}
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static void __init mgsuvd_setup_arch(void)
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{
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cpm_reset();
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init_ioports();
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}
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static __initdata struct of_device_id of_bus_ids[] = {
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{ .compatible = "simple-bus" },
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{},
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};
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static int __init declare_of_platform_devices(void)
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{
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of_platform_bus_probe(NULL, of_bus_ids, NULL);
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return 0;
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}
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machine_device_initcall(mgsuvd, declare_of_platform_devices);
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static int __init mgsuvd_probe(void)
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{
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unsigned long root = of_get_flat_dt_root();
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return of_flat_dt_is_compatible(root, "keymile,mgsuvd");
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}
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define_machine(mgsuvd) {
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.name = "MGSUVD",
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.probe = mgsuvd_probe,
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.setup_arch = mgsuvd_setup_arch,
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.init_IRQ = mpc8xx_pics_init,
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.get_irq = mpc8xx_get_irq,
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.restart = mpc8xx_restart,
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.calibrate_decr = mpc8xx_calibrate_decr,
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.set_rtc_time = mpc8xx_set_rtc_time,
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.get_rtc_time = mpc8xx_get_rtc_time,
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};
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