diff options
| -rw-r--r-- | arch/arm/boot/dts/imx31.dtsi | 88 | ||||
| -rw-r--r-- | arch/arm/mach-imx/Kconfig | 8 | ||||
| -rw-r--r-- | arch/arm/mach-imx/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-imx/clk-imx31.c | 19 | ||||
| -rw-r--r-- | arch/arm/mach-imx/imx31-dt.c | 63 | ||||
| -rw-r--r-- | arch/arm/plat-mxc/include/mach/common.h | 1 |
6 files changed, 180 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/imx31.dtsi b/arch/arm/boot/dts/imx31.dtsi new file mode 100644 index 00000000000..eef7099f3e3 --- /dev/null +++ b/arch/arm/boot/dts/imx31.dtsi @@ -0,0 +1,88 @@ +/* + * Copyright 2012 Denis 'GNUtoo' Carikli <GNUtoo@no-log.org> + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +/include/ "skeleton.dtsi" + +/ { + aliases { + serial0 = &uart1; + serial1 = &uart2; + serial2 = &uart3; + serial3 = &uart4; + serial4 = &uart5; + }; + + avic: avic-interrupt-controller@60000000 { + compatible = "fsl,imx31-avic", "fsl,avic"; + interrupt-controller; + #interrupt-cells = <1>; + reg = <0x60000000 0x100000>; + }; + + soc { + #address-cells = <1>; + #size-cells = <1>; + compatible = "simple-bus"; + interrupt-parent = <&avic>; + ranges; + + aips@43f00000 { /* AIPS1 */ + compatible = "fsl,aips-bus", "simple-bus"; + #address-cells = <1>; + #size-cells = <1>; + reg = <0x43f00000 0x100000>; + ranges; + + uart1: serial@43f90000 { + compatible = "fsl,imx31-uart", "fsl,imx21-uart"; + reg = <0x43f90000 0x4000>; + interrupts = <45>; + status = "disabled"; + }; + + uart2: serial@43f94000 { + compatible = "fsl,imx31-uart", "fsl,imx21-uart"; + reg = <0x43f94000 0x4000>; + interrupts = <32>; + status = "disabled"; + }; + + uart4: serial@43fb0000 { + compatible = "fsl,imx31-uart", "fsl,imx21-uart"; + reg = <0x43fb0000 0x4000>; + interrupts = <46>; + status = "disabled"; + }; + + uart5: serial@43fb4000 { + compatible = "fsl,imx31-uart", "fsl,imx21-uart"; + reg = <0x43fb4000 0x4000>; + interrupts = <47>; + status = "disabled"; + }; + }; + + spba@50000000 { + compatible = "fsl,spba-bus", "simple-bus"; + #address-cells = <1>; + #size-cells = <1>; + reg = <0x50000000 0x100000>; + ranges; + + uart3: serial@5000c000 { + compatible = "fsl,imx31-uart", "fsl,imx21-uart"; + reg = <0x5000c000 0x4000>; + interrupts = <18>; + status = "disabled"; + }; + }; + }; +}; diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig index eff4db5de0d..46f5c3fc927 100644 --- a/arch/arm/mach-imx/Kconfig +++ b/arch/arm/mach-imx/Kconfig @@ -557,6 +557,14 @@ config MACH_BUG Include support for BUGBase 1.3 platform. This includes specific configurations for the board and its peripherals. +config MACH_IMX31_DT + bool "Support i.MX31 platforms from device tree" + select SOC_IMX31 + select USE_OF + help + Include support for Freescale i.MX31 based platforms + using the device tree for discovery. + comment "MX35 platforms:" config MACH_PCM043 diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile index ff29421414f..07f7c226e4c 100644 --- a/arch/arm/mach-imx/Makefile +++ b/arch/arm/mach-imx/Makefile @@ -57,6 +57,7 @@ obj-$(CONFIG_MACH_QONG) += mach-qong.o obj-$(CONFIG_MACH_ARMADILLO5X0) += mach-armadillo5x0.o obj-$(CONFIG_MACH_KZM_ARM11_01) += mach-kzm_arm11_01.o obj-$(CONFIG_MACH_BUG) += mach-bug.o +obj-$(CONFIG_MACH_IMX31_DT) += imx31-dt.o # i.MX35 based machines obj-$(CONFIG_MACH_PCM043) += mach-pcm043.o diff --git a/arch/arm/mach-imx/clk-imx31.c b/arch/arm/mach-imx/clk-imx31.c index c9a06d800f8..f87a48fc74e 100644 --- a/arch/arm/mach-imx/clk-imx31.c +++ b/arch/arm/mach-imx/clk-imx31.c @@ -20,6 +20,7 @@ #include <linux/clkdev.h> #include <linux/io.h> #include <linux/err.h> +#include <linux/of.h> #include <mach/hardware.h> #include <mach/mx31.h> @@ -179,3 +180,21 @@ int __init mx31_clocks_init(unsigned long fref) return 0; } + +#ifdef CONFIG_OF +int __init mx31_clocks_init_dt(void) +{ + struct device_node *np; + u32 fref = 26000000; /* default */ + + for_each_compatible_node(np, NULL, "fixed-clock") { + if (!of_device_is_compatible(np, "fsl,imx-osc26m")) + continue; + + if (!of_property_read_u32(np, "clock-frequency", &fref)) + break; + } + + return mx31_clocks_init(fref); +} +#endif diff --git a/arch/arm/mach-imx/imx31-dt.c b/arch/arm/mach-imx/imx31-dt.c new file mode 100644 index 00000000000..a68ba207b2b --- /dev/null +++ b/arch/arm/mach-imx/imx31-dt.c @@ -0,0 +1,63 @@ +/* + * Copyright 2012 Sascha Hauer, Pengutronix + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +#include <linux/irq.h> +#include <linux/of_irq.h> +#include <linux/of_platform.h> +#include <asm/mach/arch.h> +#include <asm/mach/time.h> +#include <mach/common.h> +#include <mach/mx31.h> + +static const struct of_dev_auxdata imx31_auxdata_lookup[] __initconst = { + OF_DEV_AUXDATA("fsl,imx31-uart", MX31_UART1_BASE_ADDR, + "imx21-uart.0", NULL), + OF_DEV_AUXDATA("fsl,imx31-uart", MX31_UART2_BASE_ADDR, + "imx21-uart.1", NULL), + OF_DEV_AUXDATA("fsl,imx31-uart", MX31_UART3_BASE_ADDR, + "imx21-uart.2", NULL), + OF_DEV_AUXDATA("fsl,imx31-uart", MX31_UART4_BASE_ADDR, + "imx21-uart.3", NULL), + OF_DEV_AUXDATA("fsl,imx31-uart", MX31_UART5_BASE_ADDR, + "imx21-uart.4", NULL), + { /* sentinel */ } +}; + +static void __init imx31_dt_init(void) +{ + of_platform_populate(NULL, of_default_bus_match_table, + imx31_auxdata_lookup, NULL); +} + +static void __init imx31_timer_init(void) +{ + mx31_clocks_init_dt(); +} + +static struct sys_timer imx31_timer = { + .init = imx31_timer_init, +}; + +static const char *imx31_dt_board_compat[] __initdata = { + "fsl,imx31", + NULL +}; + +DT_MACHINE_START(IMX31_DT, "Freescale i.MX31 (Device Tree Support)") + .map_io = mx31_map_io, + .init_early = imx31_init_early, + .init_irq = mx31_init_irq, + .handle_irq = imx31_handle_irq, + .timer = &imx31_timer, + .init_machine = imx31_dt_init, + .dt_compat = imx31_dt_board_compat, + .restart = mxc_restart, +MACHINE_END diff --git a/arch/arm/plat-mxc/include/mach/common.h b/arch/arm/plat-mxc/include/mach/common.h index e429ca1b814..7cfcc44537f 100644 --- a/arch/arm/plat-mxc/include/mach/common.h +++ b/arch/arm/plat-mxc/include/mach/common.h @@ -67,6 +67,7 @@ extern int mx51_clocks_init(unsigned long ckil, unsigned long osc, extern int mx53_clocks_init(unsigned long ckil, unsigned long osc, unsigned long ckih1, unsigned long ckih2); extern int mx27_clocks_init_dt(void); +extern int mx31_clocks_init_dt(void); extern int mx51_clocks_init_dt(void); extern int mx53_clocks_init_dt(void); extern int mx6q_clocks_init(void); |