1 /* 2 * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved. 3 * Copyright 2011 Linaro Ltd. 4 * 5 * The code contained herein is licensed under the GNU General Public 6 * License. You may obtain a copy of the GNU General Public License 7 * Version 2 or later at the following locations: 8 * 9 * http://www.opensource.org/licenses/gpl-license.html 10 * http://www.gnu.org/copyleft/gpl.html 11 */ 12 13 #include <linux/clk.h> 14 #include <linux/clkdev.h> 15 #include <linux/err.h> 16 #include <linux/io.h> 17 #include <linux/irq.h> 18 #include <linux/of_irq.h> 19 #include <linux/of_platform.h> 20 #include <asm/mach/arch.h> 21 #include <asm/mach/time.h> 22 23 #include "common.h" 24 #include "mx53.h" 25 26 static void __init imx53_qsb_init(void) 27 { 28 struct clk *clk; 29 30 clk = clk_get_sys(NULL, "ssi_ext1"); 31 if (IS_ERR(clk)) { 32 pr_err("failed to get clk ssi_ext1\n"); 33 return; 34 } 35 36 clk_register_clkdev(clk, NULL, "0-000a"); 37 } 38 39 static void __init imx53_dt_init(void) 40 { 41 if (of_machine_is_compatible("fsl,imx53-qsb")) 42 imx53_qsb_init(); 43 44 of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); 45 } 46 47 static void __init imx53_timer_init(void) 48 { 49 mx53_clocks_init_dt(); 50 } 51 52 static struct sys_timer imx53_timer = { 53 .init = imx53_timer_init, 54 }; 55 56 static const char *imx53_dt_board_compat[] __initdata = { 57 "fsl,imx53", 58 NULL 59 }; 60 61 DT_MACHINE_START(IMX53_DT, "Freescale i.MX53 (Device Tree Support)") 62 .map_io = mx53_map_io, 63 .init_early = imx53_init_early, 64 .init_irq = mx53_init_irq, 65 .handle_irq = imx53_handle_irq, 66 .timer = &imx53_timer, 67 .init_machine = imx53_dt_init, 68 .init_late = imx53_init_late, 69 .dt_compat = imx53_dt_board_compat, 70 .restart = mxc_restart, 71 MACHINE_END 72