Shawn Guo | 73d2b4c | 2011-10-17 08:42:16 +0800 | [diff] [blame] | 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 | |
Shawn Guo | 394025ef | 2012-05-11 13:09:45 +0800 | [diff] [blame] | 13 | #include <linux/clk.h> |
| 14 | #include <linux/clkdev.h> |
| 15 | #include <linux/err.h> |
Shawn Guo | 73d2b4c | 2011-10-17 08:42:16 +0800 | [diff] [blame] | 16 | #include <linux/io.h> |
| 17 | #include <linux/irq.h> |
Shawn Guo | 73d2b4c | 2011-10-17 08:42:16 +0800 | [diff] [blame] | 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 | #include <mach/common.h> |
| 23 | #include <mach/mx53.h> |
| 24 | |
| 25 | /* |
| 26 | * Lookup table for attaching a specific name and platform_data pointer to |
| 27 | * devices as they get created by of_platform_populate(). Ideally this table |
| 28 | * would not exist, but the current clock implementation depends on some devices |
| 29 | * having a specific name. |
| 30 | */ |
| 31 | static const struct of_dev_auxdata imx53_auxdata_lookup[] __initconst = { |
| 32 | OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART1_BASE_ADDR, "imx21-uart.0", NULL), |
| 33 | OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART2_BASE_ADDR, "imx21-uart.1", NULL), |
| 34 | OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART3_BASE_ADDR, "imx21-uart.2", NULL), |
| 35 | OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART4_BASE_ADDR, "imx21-uart.3", NULL), |
| 36 | OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART5_BASE_ADDR, "imx21-uart.4", NULL), |
| 37 | OF_DEV_AUXDATA("fsl,imx53-fec", MX53_FEC_BASE_ADDR, "imx25-fec.0", NULL), |
| 38 | OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC1_BASE_ADDR, "sdhci-esdhc-imx53.0", NULL), |
| 39 | OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC2_BASE_ADDR, "sdhci-esdhc-imx53.1", NULL), |
| 40 | OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC3_BASE_ADDR, "sdhci-esdhc-imx53.2", NULL), |
| 41 | OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC4_BASE_ADDR, "sdhci-esdhc-imx53.3", NULL), |
| 42 | OF_DEV_AUXDATA("fsl,imx53-ecspi", MX53_ECSPI1_BASE_ADDR, "imx51-ecspi.0", NULL), |
| 43 | OF_DEV_AUXDATA("fsl,imx53-ecspi", MX53_ECSPI2_BASE_ADDR, "imx51-ecspi.1", NULL), |
| 44 | OF_DEV_AUXDATA("fsl,imx53-cspi", MX53_CSPI_BASE_ADDR, "imx35-cspi.0", NULL), |
| 45 | OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C1_BASE_ADDR, "imx-i2c.0", NULL), |
| 46 | OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C2_BASE_ADDR, "imx-i2c.1", NULL), |
| 47 | OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C3_BASE_ADDR, "imx-i2c.2", NULL), |
| 48 | OF_DEV_AUXDATA("fsl,imx53-sdma", MX53_SDMA_BASE_ADDR, "imx35-sdma", NULL), |
| 49 | OF_DEV_AUXDATA("fsl,imx53-wdt", MX53_WDOG1_BASE_ADDR, "imx2-wdt.0", NULL), |
| 50 | { /* sentinel */ } |
| 51 | }; |
| 52 | |
Shawn Guo | 394025ef | 2012-05-11 13:09:45 +0800 | [diff] [blame] | 53 | static void __init imx53_qsb_init(void) |
| 54 | { |
| 55 | struct clk *clk; |
| 56 | |
| 57 | clk = clk_get_sys(NULL, "ssi_ext1"); |
| 58 | if (IS_ERR(clk)) { |
| 59 | pr_err("failed to get clk ssi_ext1\n"); |
| 60 | return; |
| 61 | } |
| 62 | |
| 63 | clk_register_clkdev(clk, NULL, "0-000a"); |
| 64 | } |
| 65 | |
Shawn Guo | 73d2b4c | 2011-10-17 08:42:16 +0800 | [diff] [blame] | 66 | static void __init imx53_dt_init(void) |
| 67 | { |
Shawn Guo | 394025ef | 2012-05-11 13:09:45 +0800 | [diff] [blame] | 68 | if (of_machine_is_compatible("fsl,imx53-qsb")) |
| 69 | imx53_qsb_init(); |
| 70 | |
Shawn Guo | 73d2b4c | 2011-10-17 08:42:16 +0800 | [diff] [blame] | 71 | of_platform_populate(NULL, of_default_bus_match_table, |
| 72 | imx53_auxdata_lookup, NULL); |
| 73 | } |
| 74 | |
| 75 | static void __init imx53_timer_init(void) |
| 76 | { |
| 77 | mx53_clocks_init_dt(); |
| 78 | } |
| 79 | |
| 80 | static struct sys_timer imx53_timer = { |
| 81 | .init = imx53_timer_init, |
| 82 | }; |
| 83 | |
| 84 | static const char *imx53_dt_board_compat[] __initdata = { |
Sascha Hauer | 3f8976d | 2012-02-17 12:07:00 +0100 | [diff] [blame] | 85 | "fsl,imx53", |
Shawn Guo | 73d2b4c | 2011-10-17 08:42:16 +0800 | [diff] [blame] | 86 | NULL |
| 87 | }; |
| 88 | |
| 89 | DT_MACHINE_START(IMX53_DT, "Freescale i.MX53 (Device Tree Support)") |
| 90 | .map_io = mx53_map_io, |
| 91 | .init_early = imx53_init_early, |
| 92 | .init_irq = mx53_init_irq, |
| 93 | .handle_irq = imx53_handle_irq, |
| 94 | .timer = &imx53_timer, |
| 95 | .init_machine = imx53_dt_init, |
Robert Lee | aa96a18 | 2012-05-21 17:50:27 -0500 | [diff] [blame] | 96 | .init_late = imx53_init_late, |
Shawn Guo | 73d2b4c | 2011-10-17 08:42:16 +0800 | [diff] [blame] | 97 | .dt_compat = imx53_dt_board_compat, |
Russell King | 65ea788 | 2011-11-06 17:12:08 +0000 | [diff] [blame] | 98 | .restart = mxc_restart, |
Shawn Guo | 73d2b4c | 2011-10-17 08:42:16 +0800 | [diff] [blame] | 99 | MACHINE_END |