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73d2b4cd SG |
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 | ||
394025ef SG |
13 | #include <linux/clk.h> |
14 | #include <linux/clkdev.h> | |
15 | #include <linux/err.h> | |
73d2b4cd SG |
16 | #include <linux/io.h> |
17 | #include <linux/irq.h> | |
73d2b4cd SG |
18 | #include <linux/of_irq.h> |
19 | #include <linux/of_platform.h> | |
20 | #include <asm/mach/arch.h> | |
21 | #include <asm/mach/time.h> | |
73d2b4cd | 22 | |
e3372474 | 23 | #include "common.h" |
50f2de61 | 24 | #include "mx53.h" |
e3372474 | 25 | |
73d2b4cd SG |
26 | /* |
27 | * Lookup table for attaching a specific name and platform_data pointer to | |
28 | * devices as they get created by of_platform_populate(). Ideally this table | |
29 | * would not exist, but the current clock implementation depends on some devices | |
30 | * having a specific name. | |
31 | */ | |
32 | static const struct of_dev_auxdata imx53_auxdata_lookup[] __initconst = { | |
33 | OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART1_BASE_ADDR, "imx21-uart.0", NULL), | |
34 | OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART2_BASE_ADDR, "imx21-uart.1", NULL), | |
35 | OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART3_BASE_ADDR, "imx21-uart.2", NULL), | |
36 | OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART4_BASE_ADDR, "imx21-uart.3", NULL), | |
37 | OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART5_BASE_ADDR, "imx21-uart.4", NULL), | |
38 | OF_DEV_AUXDATA("fsl,imx53-fec", MX53_FEC_BASE_ADDR, "imx25-fec.0", NULL), | |
39 | OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC1_BASE_ADDR, "sdhci-esdhc-imx53.0", NULL), | |
40 | OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC2_BASE_ADDR, "sdhci-esdhc-imx53.1", NULL), | |
41 | OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC3_BASE_ADDR, "sdhci-esdhc-imx53.2", NULL), | |
42 | OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC4_BASE_ADDR, "sdhci-esdhc-imx53.3", NULL), | |
43 | OF_DEV_AUXDATA("fsl,imx53-ecspi", MX53_ECSPI1_BASE_ADDR, "imx51-ecspi.0", NULL), | |
44 | OF_DEV_AUXDATA("fsl,imx53-ecspi", MX53_ECSPI2_BASE_ADDR, "imx51-ecspi.1", NULL), | |
45 | OF_DEV_AUXDATA("fsl,imx53-cspi", MX53_CSPI_BASE_ADDR, "imx35-cspi.0", NULL), | |
5bdfba29 SG |
46 | OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C1_BASE_ADDR, "imx21-i2c.0", NULL), |
47 | OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C2_BASE_ADDR, "imx21-i2c.1", NULL), | |
48 | OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C3_BASE_ADDR, "imx21-i2c.2", NULL), | |
73d2b4cd SG |
49 | OF_DEV_AUXDATA("fsl,imx53-sdma", MX53_SDMA_BASE_ADDR, "imx35-sdma", NULL), |
50 | OF_DEV_AUXDATA("fsl,imx53-wdt", MX53_WDOG1_BASE_ADDR, "imx2-wdt.0", NULL), | |
51 | { /* sentinel */ } | |
52 | }; | |
53 | ||
394025ef SG |
54 | static void __init imx53_qsb_init(void) |
55 | { | |
56 | struct clk *clk; | |
57 | ||
58 | clk = clk_get_sys(NULL, "ssi_ext1"); | |
59 | if (IS_ERR(clk)) { | |
60 | pr_err("failed to get clk ssi_ext1\n"); | |
61 | return; | |
62 | } | |
63 | ||
64 | clk_register_clkdev(clk, NULL, "0-000a"); | |
65 | } | |
66 | ||
73d2b4cd SG |
67 | static void __init imx53_dt_init(void) |
68 | { | |
394025ef SG |
69 | if (of_machine_is_compatible("fsl,imx53-qsb")) |
70 | imx53_qsb_init(); | |
71 | ||
73d2b4cd SG |
72 | of_platform_populate(NULL, of_default_bus_match_table, |
73 | imx53_auxdata_lookup, NULL); | |
74 | } | |
75 | ||
76 | static void __init imx53_timer_init(void) | |
77 | { | |
78 | mx53_clocks_init_dt(); | |
79 | } | |
80 | ||
81 | static struct sys_timer imx53_timer = { | |
82 | .init = imx53_timer_init, | |
83 | }; | |
84 | ||
85 | static const char *imx53_dt_board_compat[] __initdata = { | |
3f8976d9 | 86 | "fsl,imx53", |
73d2b4cd SG |
87 | NULL |
88 | }; | |
89 | ||
90 | DT_MACHINE_START(IMX53_DT, "Freescale i.MX53 (Device Tree Support)") | |
91 | .map_io = mx53_map_io, | |
92 | .init_early = imx53_init_early, | |
93 | .init_irq = mx53_init_irq, | |
94 | .handle_irq = imx53_handle_irq, | |
95 | .timer = &imx53_timer, | |
96 | .init_machine = imx53_dt_init, | |
aa96a18d | 97 | .init_late = imx53_init_late, |
73d2b4cd | 98 | .dt_compat = imx53_dt_board_compat, |
65ea7884 | 99 | .restart = mxc_restart, |
73d2b4cd | 100 | MACHINE_END |