This patch adds the i.mx51 dt platform with uart and fec support. It also adds the dts file imx51 babbage, so that we can have a dt kernel on babbage booting into console with nfs root.
Signed-off-by: Shawn Guo <[email protected]> --- arch/arm/boot/dts/imx51-babbage.dts | 89 +++++++++++++++++++++++++++++++++++ arch/arm/mach-mx5/Kconfig | 8 +++ arch/arm/mach-mx5/Makefile | 1 + arch/arm/mach-mx5/imx51-dt.c | 70 +++++++++++++++++++++++++++ 4 files changed, 168 insertions(+), 0 deletions(-) create mode 100644 arch/arm/boot/dts/imx51-babbage.dts create mode 100644 arch/arm/mach-mx5/imx51-dt.c diff --git a/arch/arm/boot/dts/imx51-babbage.dts b/arch/arm/boot/dts/imx51-babbage.dts new file mode 100644 index 0000000..7976932 --- /dev/null +++ b/arch/arm/boot/dts/imx51-babbage.dts @@ -0,0 +1,89 @@ +/* + * Copyright 2011 Freescale Semiconductor, Inc. + * Copyright 2011 Linaro Ltd. + * + * 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 + */ + +/dts-v1/; +/include/ "skeleton.dtsi" + +/ { + model = "Freescale i.MX51 Babbage"; + compatible = "fsl,imx51-babbage", "fsl,imx51"; + interrupt-parent = <&tzic>; + + chosen { + bootargs = "console=ttymxc0,115200 root=/dev/mmcblk0p3 rootwait"; + }; + + memory { + reg = <0x90000000 0x20000000>; + }; + + tzic: tz-interrupt-controller@e0000000 { + compatible = "fsl,imx51-tzic", "fsl,tzic"; + interrupt-controller; + #interrupt-cells = <1>; + reg = <0xe0000000 0x4000>; + }; + + aips@70000000 { /* aips-1 */ + compatible = "fsl,aips-bus", "simple-bus"; + #address-cells = <1>; + #size-cells = <1>; + reg = <0x70000000 0x10000000>; + ranges; + + spba { + compatible = "fsl,spba-bus", "simple-bus"; + #address-cells = <1>; + #size-cells = <1>; + reg = <0x70000000 0x40000>; + ranges; + + uart@7000c000 { + compatible = "fsl,imx51-uart", "fsl,imx-uart"; + reg = <0x7000c000 0x4000>; + interrupts = <33>; + id = <3>; + fsl,has-rts-cts; + }; + }; + + uart@73fbc000 { + compatible = "fsl,imx51-uart", "fsl,imx-uart"; + reg = <0x73fbc000 0x4000>; + interrupts = <31>; + id = <1>; + fsl,has-rts-cts; + }; + + uart@73fc0000 { + compatible = "fsl,imx51-uart", "fsl,imx-uart"; + reg = <0x73fc0000 0x4000>; + interrupts = <32>; + id = <2>; + fsl,has-rts-cts; + }; + }; + + aips@80000000 { /* aips-2 */ + compatible = "fsl,aips-bus", "simple-bus"; + #address-cells = <1>; + #size-cells = <1>; + reg = <0x80000000 0x10000000>; + ranges; + + fec@83fec000 { + compatible = "fsl,imx51-fec", "fsl,fec"; + reg = <0x83fec000 0x4000>; + interrupts = <87>; + }; + }; +}; diff --git a/arch/arm/mach-mx5/Kconfig b/arch/arm/mach-mx5/Kconfig index 799fbc4..8bdd0c4 100644 --- a/arch/arm/mach-mx5/Kconfig +++ b/arch/arm/mach-mx5/Kconfig @@ -62,6 +62,14 @@ endif # ARCH_MX50_SUPPORTED if ARCH_MX51 comment "i.MX51 machines:" +config MACH_IMX51_DT + bool "Support i.MX51 platforms from device tree" + select SOC_IMX51 + select USE_OF + help + Include support for Freescale i.MX51 based platforms + using the device tree for discovery + config MACH_MX51_BABBAGE bool "Support MX51 BABBAGE platforms" select SOC_IMX51 diff --git a/arch/arm/mach-mx5/Makefile b/arch/arm/mach-mx5/Makefile index 0b9338c..47b483f 100644 --- a/arch/arm/mach-mx5/Makefile +++ b/arch/arm/mach-mx5/Makefile @@ -7,6 +7,7 @@ obj-y := cpu.o mm.o clock-mx51-mx53.o devices.o ehci.o system.o obj-$(CONFIG_SOC_IMX50) += mm-mx50.o obj-$(CONFIG_CPU_FREQ_IMX) += cpu_op-mx51.o +obj-$(CONFIG_MACH_IMX51_DT) += imx51-dt.o obj-$(CONFIG_MACH_MX51_BABBAGE) += board-mx51_babbage.o obj-$(CONFIG_MACH_MX51_3DS) += board-mx51_3ds.o obj-$(CONFIG_MACH_MX53_EVK) += board-mx53_evk.o diff --git a/arch/arm/mach-mx5/imx51-dt.c b/arch/arm/mach-mx5/imx51-dt.c new file mode 100644 index 0000000..8bfdb91 --- /dev/null +++ b/arch/arm/mach-mx5/imx51-dt.c @@ -0,0 +1,70 @@ +/* + * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright 2011 Linaro Ltd. + * + * 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_platform.h> + +#include <asm/mach/arch.h> +#include <asm/mach/time.h> + +#include <mach/common.h> +#include <mach/mx51.h> + +/* + * Lookup table for attaching a specific name and platform_data pointer to + * devices as they get created by of_platform_populate(). Ideally this table + * would not exist, but the current clock implementation depends on some devices + * having a specific name. + */ +static const struct of_dev_auxdata imx51_auxdata_lookup[] __initconst = { + OF_DEV_AUXDATA("fsl,imx51-uart", MX51_UART1_BASE_ADDR, "imx-uart.0", NULL), + OF_DEV_AUXDATA("fsl,imx51-uart", MX51_UART2_BASE_ADDR, "imx-uart.1", NULL), + OF_DEV_AUXDATA("fsl,imx51-uart", MX51_UART3_BASE_ADDR, "imx-uart.2", NULL), + OF_DEV_AUXDATA("fsl,imx51-fec", MX51_FEC_BASE_ADDR, "fec.0", NULL), + {} +}; + +static const struct of_device_id tzic_of_match[] __initconst = { + { .compatible = "fsl,imx51-tzic", }, + {} +}; + +static void __init imx51_dt_init(void) +{ + irq_domain_generate_simple(tzic_of_match, MX51_TZIC_BASE_ADDR, 0); + + of_platform_populate(NULL, of_default_bus_match_table, + imx51_auxdata_lookup, NULL); +} + +static void __init imx51_timer_init(void) +{ + mx51_clocks_init(32768, 24000000, 22579200, 0); +} + +static struct sys_timer imx51_timer = { + .init = imx51_timer_init, +}; + +static const char *imx51_dt_board_compat[] __initdata = { + "fsl,imx51-babbage", + NULL +}; + +DT_MACHINE_START(IMX51_DT, "Freescale i.MX51 (Device Tree Support)") + .map_io = mx51_map_io, + .init_early = imx51_init_early, + .init_irq = mx51_init_irq, + .timer = &imx51_timer, + .init_machine = imx51_dt_init, + .dt_compat = imx51_dt_board_compat, +MACHINE_END -- 1.7.4.1 _______________________________________________ devicetree-discuss mailing list [email protected] https://lists.ozlabs.org/listinfo/devicetree-discuss
