[PATCH 1/1] ARM: imx28: add basic dt support
Dong Aisheng
b29396 at freescale.com
Fri Mar 30 17:31:18 EST 2012
From: Dong Aisheng <dong.aisheng at linaro.org>
This patch includes basic dt support which can boot via nfs rootfs.
Signed-off-by: Dong Aisheng <dong.aisheng at linaro.org>
---
ChangeLog v2->v3:
* Some minor fixes suggested by Shawn Guo
ChangeLog v1->v2:
* Some fixes addressed Rob's review comments.
Remove using of OF_DEV_AUXDATA.
* Remove mac address from dts file
Currently we use the mac address got from uboot to work.
Will submit a p separate atch using prom_update_property to fix this
issue for driver based on suggestions from Grant and Lothar.
* rename mxs-dt.c to mach-mxs.c which is supposed to support mx23 dt
too in the future.
* add compatible string "fsl,imx28" per Sascha's suggestion
* add more devices in dtsi file
For those devices still not in use, set the state to "disabled"
by default.
---
Documentation/devicetree/bindings/arm/fsl.txt | 4 +
arch/arm/boot/dts/imx28-evk.dts | 34 +++
arch/arm/boot/dts/imx28.dtsi | 356 +++++++++++++++++++++++++
arch/arm/mach-mxs/Kconfig | 10 +
arch/arm/mach-mxs/Makefile | 1 +
arch/arm/mach-mxs/clock-mx28.c | 4 +
arch/arm/mach-mxs/devices/Kconfig | 1 -
arch/arm/mach-mxs/mach-mxs.c | 68 +++++
8 files changed, 477 insertions(+), 1 deletions(-)
create mode 100644 arch/arm/boot/dts/imx28-evk.dts
create mode 100644 arch/arm/boot/dts/imx28.dtsi
create mode 100644 arch/arm/mach-mxs/mach-mxs.c
diff --git a/Documentation/devicetree/bindings/arm/fsl.txt b/Documentation/devicetree/bindings/arm/fsl.txt
index 54bddda..9f21faf 100644
--- a/Documentation/devicetree/bindings/arm/fsl.txt
+++ b/Documentation/devicetree/bindings/arm/fsl.txt
@@ -1,6 +1,10 @@
Freescale i.MX Platforms Device Tree Bindings
-----------------------------------------------
+i.MX28 Evaluation Kit
+Required root node properties:
+ - compatible = "fsl,imx28-evk", "fsl,imx28";
+
i.MX51 Babbage Board
Required root node properties:
- compatible = "fsl,imx51-babbage", "fsl,imx51";
diff --git a/arch/arm/boot/dts/imx28-evk.dts b/arch/arm/boot/dts/imx28-evk.dts
new file mode 100644
index 0000000..57703ec
--- /dev/null
+++ b/arch/arm/boot/dts/imx28-evk.dts
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ *
+ * 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/ "imx28.dtsi"
+
+/ {
+ model = "Freescale i.MX28 Evaluation Kit";
+ compatible = "fsl,imx28-evk", "fsl,imx28";
+
+ memory {
+ reg = <0x40000000 0x08000000>;
+ };
+
+ ahb at 80080000 {
+ ethernet at 800f0000 {
+ phy-mode = "rmii";
+ status = "okay";
+ };
+
+ ethernet at 800f4000 {
+ phy-mode = "rmii";
+ status = "okay";
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/imx28.dtsi b/arch/arm/boot/dts/imx28.dtsi
new file mode 100644
index 0000000..d1f4f8c
--- /dev/null
+++ b/arch/arm/boot/dts/imx28.dtsi
@@ -0,0 +1,356 @@
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ *
+ * 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"
+
+/ {
+ interrupt-parent = <&icoll>;
+
+ aliases {
+ serial0 = &duart;
+ };
+
+ cpus {
+ cpu at 0 {
+ compatible = "arm,arm926ejs";
+ };
+ };
+
+ apb at 80000000 {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0x80000000 0x80000>;
+ ranges;
+
+ apbh at 80000000 {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0x80000000 0x3c900>;
+ ranges;
+
+ icoll: interrupt-controller at 80000000 {
+ compatible = "fsl,imx28-icoll", "fsl,mxs-icoll";
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ reg = <0x80000000 0x2000>;
+ };
+
+ hsadc at 80002000 {
+ reg = <0x80002000 2000>;
+ interrupts = <13 87>;
+ status = "disabled";
+ };
+
+ dma-apbh at 80004000 {
+ reg = <0x80004000 2000>;
+ status = "disabled";
+ };
+
+ perfmon at 80006000 {
+ reg = <0x80006000 800>;
+ interrupts = <27>;
+ status = "disabled";
+ };
+
+ bch at 8000a000 {
+ reg = <0x8000a000 2000>;
+ interrupts = <41>;
+ status = "disabled";
+ };
+
+ gpmi at 8000c000 {
+ reg = <0x8000c000 2000>;
+ interrupts = <42 88>;
+ status = "disabled";
+ };
+
+ ssp at 80010000 {
+ reg = <0x80010000 2000>;
+ interrupts = <96 82>;
+ status = "disabled";
+ };
+
+ ssp at 80012000 {
+ reg = <0x80012000 2000>;
+ interrupts = <97 83>;
+ status = "disabled";
+ };
+
+ ssp at 80014000 {
+ reg = <0x80014000 2000>;
+ interrupts = <98 84>;
+ status = "disabled";
+ };
+
+ ssp at 80016000 {
+ reg = <0x80016000 2000>;
+ interrupts = <99 85>;
+ status = "disabled";
+ };
+
+ pinctrl at 80018000 {
+ reg = <0x80018000 2000>;
+ status = "disabled";
+ };
+
+ digctl at 8001c000 {
+ reg = <0x8001c000 2000>;
+ interrupts = <89>;
+ status = "disabled";
+ };
+
+ etm at 80022000 {
+ reg = <0x80022000 2000>;
+ status = "disabled";
+ };
+
+ dma-apbx at 80024000 {
+ reg = <0x80024000 2000>;
+ status = "disabled";
+ };
+
+ dcp at 80028000 {
+ reg = <0x80028000 2000>;
+ interrupts = <52 53 54>;
+ status = "disabled";
+ };
+
+ pxp at 8002a000 {
+ reg = <0x8002a000 2000>;
+ interrupts = <39>;
+ status = "disabled";
+ };
+
+ ocotp at 8002c000 {
+ reg = <0x8002c000 2000>;
+ status = "disabled";
+ };
+
+ axi-ahb at 8002e000 {
+ reg = <0x8002e000 2000>;
+ status = "disabled";
+ };
+
+ lcdif at 80030000 {
+ reg = <0x80030000 2000>;
+ interrupts = <38 86>;
+ status = "disabled";
+ };
+
+ can at 80032000 {
+ reg = <0x80032000 2000>;
+ interrupts = <8>;
+ status = "disabled";
+ };
+
+ can at 80034000 {
+ reg = <0x80034000 2000>;
+ interrupts = <9>;
+ status = "disabled";
+ };
+
+ simdbg at 8003c000 {
+ reg = <0x8003c000 200>;
+ status = "disabled";
+ };
+
+ simgpmisel at 8003c200 {
+ reg = <0x8003c200 100>;
+ status = "disabled";
+ };
+
+ simsspsel at 8003c300 {
+ reg = <0x8003c300 100>;
+ status = "disabled";
+ };
+
+ simmemsel at 8003c400 {
+ reg = <0x8003c400 100>;
+ status = "disabled";
+ };
+
+ gpiomon at 8003c500 {
+ reg = <0x8003c500 100>;
+ status = "disabled";
+ };
+
+ simenet at 8003c700 {
+ reg = <0x8003c700 100>;
+ status = "disabled";
+ };
+
+ armjtag at 8003c800 {
+ reg = <0x8003c800 100>;
+ status = "disabled";
+ };
+ };
+
+ apbx at 80040000 {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0x80040000 0x40000>;
+ ranges;
+
+ clkctl at 80040000 {
+ reg = <0x80040000 2000>;
+ status = "disabled";
+ };
+
+ saif at 80042000 {
+ reg = <0x80042000 2000>;
+ interrupts = <59 80>;
+ status = "disabled";
+ };
+
+ power at 80044000 {
+ reg = <0x80044000 2000>;
+ status = "disabled";
+ };
+
+ saif at 80046000 {
+ reg = <0x80046000 2000>;
+ interrupts = <58 81>;
+ status = "disabled";
+ };
+
+ lradc at 80050000 {
+ reg = <0x80050000 2000>;
+ status = "disabled";
+ };
+
+ spdif at 80054000 {
+ reg = <0x80054000 2000>;
+ interrupts = <45 66>;
+ status = "disabled";
+ };
+
+ rtc at 80056000 {
+ reg = <0x80056000 2000>;
+ interrupts = <28 29>;
+ status = "disabled";
+ };
+
+ i2c at 80058000 {
+ reg = <0x80058000 2000>;
+ interrupts = <111 68>;
+ status = "disabled";
+ };
+
+ i2c at 8005a000 {
+ reg = <0x8005a000 2000>;
+ interrupts = <110 69>;
+ status = "disabled";
+ };
+
+ pwm at 80064000 {
+ reg = <0x80064000 2000>;
+ status = "disabled";
+ };
+
+ timrot at 80068000 {
+ reg = <0x80068000 2000>;
+ status = "disabled";
+ };
+
+ serial at 8006a000 {
+ reg = <0x8006a000 0x2000>;
+ interrupts = <112 70 71>;
+ status = "disabled";
+ };
+
+ serial at 8006c000 {
+ reg = <0x8006c000 0x2000>;
+ interrupts = <113 72 73>;
+ status = "disabled";
+ };
+
+ serial at 8006e000 {
+ reg = <0x8006e000 0x2000>;
+ interrupts = <114 74 75>;
+ status = "disabled";
+ };
+
+ serial at 80070000 {
+ reg = <0x80070000 0x2000>;
+ interrupts = <115 76 77>;
+ status = "disabled";
+ };
+
+ serial at 80072000 {
+ reg = <0x80072000 0x2000>;
+ interrupts = <116 78 79>;
+ status = "disabled";
+ };
+
+ duart: serial at 80074000 {
+ compatible = "arm,pl011", "arm,primecell";
+ reg = <0x80074000 0x1000>;
+ interrupts = <47>;
+ };
+
+ usbphy at 8007c000 {
+ reg = <0x8007c000 0x2000>;
+ status = "disabled";
+ };
+
+ usbphy at 8007e000 {
+ reg = <0x8007e000 0x2000>;
+ status = "disabled";
+ };
+ };
+ };
+
+ ahb at 80080000 {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0x80080000 0x80000>;
+ ranges;
+
+ usbctrl at 80080000 {
+ reg = <0x80080000 0x10000>;
+ status = "disabled";
+ };
+
+ usbctrl at 80090000 {
+ reg = <0x80090000 0x10000>;
+ status = "disabled";
+ };
+
+ dflpt at 800c0000 {
+ reg = <0x800c0000 0x10000>;
+ status = "disabled";
+ };
+
+ ethernet at 800f0000 {
+ compatible = "fsl,imx28-fec";
+ reg = <0x800f0000 0x4000>;
+ interrupts = <101>;
+ status = "disabled";
+ };
+
+ ethernet at 800f4000 {
+ compatible = "fsl,imx28-fec";
+ reg = <0x800f4000 0x4000>;
+ interrupts = <102>;
+ status = "disabled";
+ };
+
+ switch at 800f8000 {
+ reg = <0x800f8000 0x8000>;
+ status = "disabled";
+ };
+
+ };
+};
diff --git a/arch/arm/mach-mxs/Kconfig b/arch/arm/mach-mxs/Kconfig
index c57f996..09fe0fb 100644
--- a/arch/arm/mach-mxs/Kconfig
+++ b/arch/arm/mach-mxs/Kconfig
@@ -7,16 +7,26 @@ config MXS_OCOTP
config SOC_IMX23
bool
+ select ARM_AMBA
select CPU_ARM926T
select HAVE_PWM
config SOC_IMX28
bool
+ select ARM_AMBA
select CPU_ARM926T
select HAVE_PWM
comment "MXS platforms:"
+config MACH_MXS_DT
+ bool "Support MXS platforms from device tree"
+ select SOC_IMX28
+ select USE_OF
+ help
+ Include support for Freescale MXS platforms(i.MX23 and i.MX28)
+ using the device tree for discovery
+
config MACH_STMP378X_DEVB
bool "Support STMP378x_devb Platform"
select SOC_IMX23
diff --git a/arch/arm/mach-mxs/Makefile b/arch/arm/mach-mxs/Makefile
index 908bf9a..8328c45 100644
--- a/arch/arm/mach-mxs/Makefile
+++ b/arch/arm/mach-mxs/Makefile
@@ -7,6 +7,7 @@ obj-$(CONFIG_PM) += pm.o
obj-$(CONFIG_SOC_IMX23) += clock-mx23.o
obj-$(CONFIG_SOC_IMX28) += clock-mx28.o
+obj-$(CONFIG_MACH_MXS_DT) += mach-mxs.o
obj-$(CONFIG_MACH_STMP378X_DEVB) += mach-stmp378x_devb.o
obj-$(CONFIG_MACH_MX23EVK) += mach-mx23evk.o
obj-$(CONFIG_MACH_MX28EVK) += mach-mx28evk.o
diff --git a/arch/arm/mach-mxs/clock-mx28.c b/arch/arm/mach-mxs/clock-mx28.c
index 5d68e41..88ed30c 100644
--- a/arch/arm/mach-mxs/clock-mx28.c
+++ b/arch/arm/mach-mxs/clock-mx28.c
@@ -671,6 +671,10 @@ static struct clk_lookup lookups[] = {
_REGISTER_CLOCK("imx28-fb", NULL, lcdif_clk)
_REGISTER_CLOCK("mxs-saif.0", NULL, saif0_clk)
_REGISTER_CLOCK("mxs-saif.1", NULL, saif1_clk)
+ /* for DT */
+ _REGISTER_CLOCK("80074000.serial", NULL, uart_clk)
+ _REGISTER_CLOCK("800f0000.ethernet", NULL, fec_clk)
+ _REGISTER_CLOCK("800f4000.ethernet", NULL, fec_clk)
};
static int clk_misc_init(void)
diff --git a/arch/arm/mach-mxs/devices/Kconfig b/arch/arm/mach-mxs/devices/Kconfig
index 18b6bf5..2febd62 100644
--- a/arch/arm/mach-mxs/devices/Kconfig
+++ b/arch/arm/mach-mxs/devices/Kconfig
@@ -1,6 +1,5 @@
config MXS_HAVE_AMBA_DUART
bool
- select ARM_AMBA
config MXS_HAVE_PLATFORM_AUART
bool
diff --git a/arch/arm/mach-mxs/mach-mxs.c b/arch/arm/mach-mxs/mach-mxs.c
new file mode 100644
index 0000000..b2b6c37
--- /dev/null
+++ b/arch/arm/mach-mxs/mach-mxs.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ * Copyright 2012 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/init.h>
+#include <linux/irqdomain.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>
+
+static int __init mxs_icoll_add_irq_domain(struct device_node *np,
+ struct device_node *interrupt_parent)
+{
+ irq_domain_add_simple(np, 0);
+
+ return 0;
+}
+
+static const struct of_device_id mxs_irq_match[] __initconst = {
+ { .compatible = "fsl,mxs-icoll", .data = mxs_icoll_add_irq_domain, },
+ { /* sentinel */ }
+};
+
+static void __init mxs_dt_init_irq(void)
+{
+ icoll_init_irq();
+ of_irq_init(mxs_irq_match);
+}
+
+static void __init imx28_timer_init(void)
+{
+ mx28_clocks_init();
+}
+
+static struct sys_timer imx28_timer = {
+ .init = imx28_timer_init,
+};
+
+static void __init mxs_machine_init(void)
+{
+ of_platform_populate(NULL, of_default_bus_match_table,
+ NULL, NULL);
+}
+
+static const char *imx28_dt_compat[] __initdata = {
+ "fsl,imx28-evk",
+ "fsl,imx28",
+ NULL,
+};
+
+DT_MACHINE_START(IMX28, "Freescale i.MX28 (Device Tree)")
+ .map_io = mx28_map_io,
+ .init_irq = mxs_dt_init_irq,
+ .timer = &imx28_timer,
+ .init_machine = mxs_machine_init,
+ .dt_compat = imx28_dt_compat,
+ .restart = mxs_restart,
+MACHINE_END
--
1.7.0.4
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