[PATCH v3 2/2] arm/mx5: add device tree support for imx51 babbage
Shawn Guo
shawn.guo at linaro.org
Tue Aug 2 05:17:32 EST 2011
It adds device tree support for imx51 babbage board.
Signed-off-by: Shawn Guo <shawn.guo at linaro.org>
Cc: Grant Likely <grant.likely at secretlab.ca>
Cc: Sascha Hauer <s.hauer at pengutronix.de>
---
.../devicetree/bindings/arm/fsl/boards.txt | 4 +
arch/arm/boot/dts/imx51-babbage.dts | 141 ++++++++++++++
arch/arm/boot/dts/imx51.dtsi | 203 ++++++++++++++++++++
arch/arm/mach-mx5/Kconfig | 9 +
arch/arm/mach-mx5/Makefile | 1 +
arch/arm/mach-mx5/board-mx51_babbage.c | 5 +
arch/arm/mach-mx5/imx51-dt.c | 112 +++++++++++
arch/arm/plat-mxc/include/mach/iomux-mx51.h | 2 +
8 files changed, 477 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/boot/dts/imx51-babbage.dts
create mode 100644 arch/arm/boot/dts/imx51.dtsi
create mode 100644 arch/arm/mach-mx5/imx51-dt.c
diff --git a/Documentation/devicetree/bindings/arm/fsl/boards.txt b/Documentation/devicetree/bindings/arm/fsl/boards.txt
index d1e8d6f..e2401cd 100644
--- a/Documentation/devicetree/bindings/arm/fsl/boards.txt
+++ b/Documentation/devicetree/bindings/arm/fsl/boards.txt
@@ -1,3 +1,7 @@
+i.MX51 Babbage Board
+Required root node properties:
+ - compatible = "fsl,imx51-babbage", "fsl,imx51";
+
i.MX53 Automotive Reference Design Board
Required root node properties:
- compatible = "fsl,imx53-ard", "fsl,imx53";
diff --git a/arch/arm/boot/dts/imx51-babbage.dts b/arch/arm/boot/dts/imx51-babbage.dts
new file mode 100644
index 0000000..67fc0bf
--- /dev/null
+++ b/arch/arm/boot/dts/imx51-babbage.dts
@@ -0,0 +1,141 @@
+/*
+ * 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/ "imx51.dtsi"
+
+/ {
+ model = "Freescale i.MX51 Babbage Board";
+ compatible = "fsl,imx51-babbage", "fsl,imx51";
+
+ chosen {
+ bootargs = "console=ttymxc0,115200 root=/dev/mmcblk0p3 rootwait";
+ };
+
+ memory {
+ reg = <0x90000000 0x20000000>;
+ };
+
+ aips at 70000000 { /* aips-1 */
+ spba at 70000000 {
+ esdhc at 70004000 { /* ESDHC1 */
+ fsl,cd-internal;
+ fsl,wp-internal;
+ };
+
+ esdhc at 70008000 { /* ESDHC2 */
+ cd-gpios = <&gpio0 6 0>; /* GPIO1_6 */
+ wp-gpios = <&gpio0 5 0>; /* GPIO1_5 */
+ };
+
+ uart2: uart at 7000c000 { /* UART3 */
+ fsl,uart-has-rtscts;
+ };
+
+ ecspi at 70010000 { /* ECSPI1 */
+ fsl,spi-num-chipselects = <2>;
+ cs-gpios = <&gpio3 24 0>, /* GPIO4_24 */
+ <&gpio3 25 0>; /* GPIO4_25 */
+
+ pmic: mc13892 at 0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "fsl,mc13892";
+ spi-max-frequency = <6000000>;
+ reg = <0>;
+ mc13xxx-irq-gpios = <&gpio0 8 0>; /* GPIO1_8 */
+ fsl,mc13xxx-uses-regulator;
+ };
+
+ flash: at45db321d at 1 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "atmel,at45db321d", "atmel,at45", "atmel,dataflash";
+ spi-max-frequency = <25000000>;
+ reg = <1>;
+
+ partition at 0 {
+ label = "U-Boot";
+ reg = <0x0 0x40000>;
+ read-only;
+ };
+
+ partition at 40000 {
+ label = "Kernel";
+ reg = <0x40000 0x3c0000>;
+ };
+ };
+ };
+
+ esdhc at 70020000 { /* ESDHC3 */
+ status = "disabled";
+ };
+
+ esdhc at 70024000 { /* ESDHC4 */
+ status = "disabled";
+ };
+
+ i2c at 70038000 { /* HS-I2C */
+ status = "disabled";
+ };
+ };
+
+ iomuxc at 73fa8000 {
+ compatible = "fsl,imx51-iomuxc-babbage";
+ reg = <0x73fa8000 0x4000>;
+ };
+
+ uart0: uart at 73fbc000 {
+ fsl,uart-has-rtscts;
+ };
+ };
+
+ aips at 80000000 { /* aips-2 */
+ ecspi at 83fac000 { /* ECSPI2 */
+ status = "disabled";
+ };
+
+ sdma at 83fb0000 {
+ fsl,sdma-ram-script-name = "imx/sdma/sdma-imx51.bin";
+ };
+
+ cspi at 83fc0000 {
+ status = "disabled";
+ };
+
+ i2c at 83fc4000 { /* I2C2 */
+ codec: sgtl5000 at 0a {
+ compatible = "fsl,sgtl5000";
+ reg = <0x0a>;
+ };
+ };
+
+ i2c at 83fc8000 { /* I2C1 */
+ status = "disabled";
+ };
+
+ fec at 83fec000 {
+ phy-mode = "mii";
+ };
+ };
+
+ gpio-keys {
+ compatible = "gpio-keys";
+
+ power {
+ label = "Power Button";
+ gpios = <&gpio1 21 0>;
+ linux,code = <116>; /* KEY_POWER */
+ gpio-key,wakeup;
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/imx51.dtsi b/arch/arm/boot/dts/imx51.dtsi
new file mode 100644
index 0000000..f456ebd
--- /dev/null
+++ b/arch/arm/boot/dts/imx51.dtsi
@@ -0,0 +1,203 @@
+/*
+ * 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
+ */
+
+/include/ "skeleton.dtsi"
+
+/ {
+ interrupt-parent = <&tzic>;
+
+ aliases {
+ serial0 = &uart0;
+ serial1 = &uart1;
+ serial2 = &uart2;
+ };
+
+ tzic: tz-interrupt-controller at e0000000 {
+ compatible = "fsl,imx51-tzic", "fsl,tzic";
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ reg = <0xe0000000 0x4000>;
+ };
+
+ aips at 70000000 { /* AIPS1 */
+ compatible = "fsl,aips-bus", "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0x70000000 0x10000000>;
+ ranges;
+
+ spba at 70000000 {
+ compatible = "fsl,spba-bus", "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0x70000000 0x40000>;
+ ranges;
+
+ esdhc at 70004000 { /* ESDHC1 */
+ compatible = "fsl,imx51-esdhc";
+ reg = <0x70004000 0x4000>;
+ interrupts = <1>;
+ };
+
+ esdhc at 70008000 { /* ESDHC2 */
+ compatible = "fsl,imx51-esdhc";
+ reg = <0x70008000 0x4000>;
+ interrupts = <2>;
+ };
+
+ uart2: uart at 7000c000 { /* UART3 */
+ compatible = "fsl,imx51-uart", "fsl,imx21-uart";
+ reg = <0x7000c000 0x4000>;
+ interrupts = <33>;
+ };
+
+ ecspi at 70010000 { /* ECSPI1 */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "fsl,imx51-ecspi";
+ reg = <0x70010000 0x4000>;
+ interrupts = <36>;
+ };
+
+ esdhc at 70020000 { /* ESDHC3 */
+ compatible = "fsl,imx51-esdhc";
+ reg = <0x70020000 0x4000>;
+ interrupts = <3>;
+ };
+
+ esdhc at 70024000 { /* ESDHC4 */
+ compatible = "fsl,imx51-esdhc";
+ reg = <0x70024000 0x4000>;
+ interrupts = <4>;
+ };
+
+ i2c at 70038000 { /* HS-I2C */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "fsl,imx51-i2c", "fsl,imx1-i2c";
+ reg = <0x70038000 0x4000>;
+ interrupts = <64>;
+ clock-frequency = <400000>;
+ };
+ };
+
+ gpio0: gpio at 73f84000 { /* GPIO1 */
+ compatible = "fsl,imx51-gpio", "fsl,imx31-gpio";
+ reg = <0x73f84000 0x4000>;
+ interrupts = <50 51>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ };
+
+ gpio1: gpio at 73f88000 { /* GPIO2 */
+ compatible = "fsl,imx51-gpio", "fsl,imx31-gpio";
+ reg = <0x73f88000 0x4000>;
+ interrupts = <52 53>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ };
+
+ gpio2: gpio at 73f8c000 { /* GPIO3 */
+ compatible = "fsl,imx51-gpio", "fsl,imx31-gpio";
+ reg = <0x73f8c000 0x4000>;
+ interrupts = <54 55>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ };
+
+ gpio3: gpio at 73f90000 { /* GPIO4 */
+ compatible = "fsl,imx51-gpio", "fsl,imx31-gpio";
+ reg = <0x73f90000 0x4000>;
+ interrupts = <56 57>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ };
+
+ wdt at 73f98000 { /* WDOG1 */
+ compatible = "fsl,imx51-wdt", "fsl,imx21-wdt";
+ reg = <0x73f98000 0x4000>;
+ interrupts = <58>;
+ };
+
+ uart0: uart at 73fbc000 {
+ compatible = "fsl,imx51-uart", "fsl,imx21-uart";
+ reg = <0x73fbc000 0x4000>;
+ interrupts = <31>;
+ };
+
+ uart1: uart at 73fc0000 {
+ compatible = "fsl,imx51-uart", "fsl,imx21-uart";
+ reg = <0x73fc0000 0x4000>;
+ interrupts = <32>;
+ };
+ };
+
+ aips at 80000000 { /* AIPS2 */
+ compatible = "fsl,aips-bus", "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0x80000000 0x10000000>;
+ ranges;
+
+ ecspi at 83fac000 { /* ECSPI2 */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "fsl,imx51-ecspi";
+ reg = <0x83fac000 0x4000>;
+ interrupts = <37>;
+ };
+
+ sdma at 83fb0000 {
+ compatible = "fsl,imx51-sdma", "fsl,imx35-sdma";
+ reg = <0x83fb0000 0x4000>;
+ interrupts = <6>;
+ };
+
+ cspi at 83fc0000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "fsl,imx51-cspi", "fsl,imx35-cspi";
+ reg = <0x83fc0000 0x4000>;
+ interrupts = <38>;
+ };
+
+ i2c at 83fc4000 { /* I2C2 */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "fsl,imx51-i2c", "fsl,imx1-i2c";
+ reg = <0x83fc4000 0x4000>;
+ interrupts = <63>;
+ };
+
+ i2c at 83fc8000 { /* I2C1 */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "fsl,imx51-i2c", "fsl,imx1-i2c";
+ reg = <0x83fc8000 0x4000>;
+ interrupts = <62>;
+ };
+
+ fec at 83fec000 {
+ compatible = "fsl,imx51-fec", "fsl,imx27-fec";
+ reg = <0x83fec000 0x4000>;
+ interrupts = <87>;
+ };
+ };
+};
diff --git a/arch/arm/mach-mx5/Kconfig b/arch/arm/mach-mx5/Kconfig
index 0ac676c..bda12e8 100644
--- a/arch/arm/mach-mx5/Kconfig
+++ b/arch/arm/mach-mx5/Kconfig
@@ -62,6 +62,15 @@ 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
+ select MACH_MX51_BABBAGE
+ 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 3dbe5e2..a3c75f3 100644
--- a/arch/arm/mach-mx5/Makefile
+++ b/arch/arm/mach-mx5/Makefile
@@ -23,4 +23,5 @@ obj-$(CONFIG_MACH_MX51_EFIKAMX) += board-mx51_efikamx.o
obj-$(CONFIG_MACH_MX51_EFIKASB) += board-mx51_efikasb.o
obj-$(CONFIG_MACH_MX50_RDP) += board-mx50_rdp.o
+obj-$(CONFIG_MACH_IMX51_DT) += imx51-dt.o
obj-$(CONFIG_MACH_IMX53_DT) += imx53-dt.o
diff --git a/arch/arm/mach-mx5/board-mx51_babbage.c b/arch/arm/mach-mx5/board-mx51_babbage.c
index e400b09..e0cdeae 100644
--- a/arch/arm/mach-mx5/board-mx51_babbage.c
+++ b/arch/arm/mach-mx5/board-mx51_babbage.c
@@ -167,6 +167,11 @@ static iomux_v3_cfg_t mx51babbage_pads[] = {
MX51_PAD_CSPI1_SS1__GPIO4_25,
};
+struct iomux_v3_pad_data imx51_babbage_pad_data = {
+ .pads = mx51babbage_pads,
+ .num = ARRAY_SIZE(mx51babbage_pads),
+};
+
/* Serial ports */
static const struct imxuart_platform_data uart_pdata __initconst = {
.flags = IMXUART_HAVE_RTSCTS,
diff --git a/arch/arm/mach-mx5/imx51-dt.c b/arch/arm/mach-mx5/imx51-dt.c
new file mode 100644
index 0000000..b28ebeb
--- /dev/null
+++ b/arch/arm/mach-mx5/imx51-dt.c
@@ -0,0 +1,112 @@
+/*
+ * 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/irqdomain.h>
+#include <linux/of_platform.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/time.h>
+#include <mach/common.h>
+#include <mach/mx51.h>
+#include <mach/iomux-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, "imx21-uart.0", NULL),
+ OF_DEV_AUXDATA("fsl,imx51-uart", MX51_UART2_BASE_ADDR, "imx21-uart.1", NULL),
+ OF_DEV_AUXDATA("fsl,imx51-uart", MX51_UART3_BASE_ADDR, "imx21-uart.2", NULL),
+ OF_DEV_AUXDATA("fsl,imx51-fec", MX51_FEC_BASE_ADDR, "imx27-fec.0", NULL),
+ OF_DEV_AUXDATA("fsl,imx51-esdhc", MX51_ESDHC1_BASE_ADDR, "sdhci-esdhc-imx51.0", NULL),
+ OF_DEV_AUXDATA("fsl,imx51-esdhc", MX51_ESDHC2_BASE_ADDR, "sdhci-esdhc-imx51.1", NULL),
+ OF_DEV_AUXDATA("fsl,imx51-esdhc", MX51_ESDHC3_BASE_ADDR, "sdhci-esdhc-imx51.2", NULL),
+ OF_DEV_AUXDATA("fsl,imx51-esdhc", MX51_ESDHC4_BASE_ADDR, "sdhci-esdhc-imx51.3", NULL),
+ OF_DEV_AUXDATA("fsl,imx51-ecspi", MX51_ECSPI1_BASE_ADDR, "imx51-ecspi.0", NULL),
+ OF_DEV_AUXDATA("fsl,imx51-ecspi", MX51_ECSPI2_BASE_ADDR, "imx51-ecspi.1", NULL),
+ OF_DEV_AUXDATA("fsl,imx51-cspi", MX51_CSPI_BASE_ADDR, "imx35-cspi.0", NULL),
+ OF_DEV_AUXDATA("fsl,imx51-i2c", MX51_I2C1_BASE_ADDR, "imx-i2c.0", NULL),
+ OF_DEV_AUXDATA("fsl,imx51-i2c", MX51_I2C2_BASE_ADDR, "imx-i2c.1", NULL),
+ OF_DEV_AUXDATA("fsl,imx51-sdma", MX51_SDMA_BASE_ADDR, "imx35-sdma", NULL),
+ OF_DEV_AUXDATA("fsl,imx51-wdt", MX51_WDOG1_BASE_ADDR, "imx2-wdt.0", NULL),
+ { /* sentinel */ }
+};
+
+static const struct of_device_id imx51_tzic_of_match[] __initconst = {
+ { .compatible = "fsl,imx51-tzic", },
+ { /* sentinel */ }
+};
+
+static const struct of_device_id imx51_gpio_of_match[] __initconst = {
+ { .compatible = "fsl,imx51-gpio", },
+ { /* sentinel */ }
+};
+
+static const struct of_device_id imx51_iomuxc_of_match[] __initconst = {
+ { .compatible = "fsl,imx51-iomuxc-babbage", .data = &imx51_babbage_pad_data, },
+ { /* sentinel */ }
+};
+
+static void __init imx51_dt_init(void)
+{
+ int gpio_irq = MXC_INTERNAL_IRQS + ARCH_NR_GPIOS;
+ struct device_node *node;
+ const struct of_device_id *of_id;
+ struct iomux_v3_pad_data *pad_data;
+
+ node = of_find_matching_node(NULL, imx51_iomuxc_of_match);
+ if (node) {
+ of_id = of_match_node(imx51_iomuxc_of_match, node);
+ pad_data = (struct iomux_v3_pad_data *) of_id->data;
+ mxc_iomux_v3_setup_multiple_pads(pad_data->pads, pad_data->num);
+ of_node_put(node);
+ }
+
+ irq_domain_generate_simple(imx51_tzic_of_match, MX51_TZIC_BASE_ADDR, 0);
+ gpio_irq -= 32;
+ irq_domain_generate_simple(imx51_gpio_of_match, MX51_GPIO1_BASE_ADDR, gpio_irq);
+ gpio_irq -= 32;
+ irq_domain_generate_simple(imx51_gpio_of_match, MX51_GPIO2_BASE_ADDR, gpio_irq);
+ gpio_irq -= 32;
+ irq_domain_generate_simple(imx51_gpio_of_match, MX51_GPIO3_BASE_ADDR, gpio_irq);
+ gpio_irq -= 32;
+ irq_domain_generate_simple(imx51_gpio_of_match, MX51_GPIO4_BASE_ADDR, gpio_irq);
+
+ 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
diff --git a/arch/arm/plat-mxc/include/mach/iomux-mx51.h b/arch/arm/plat-mxc/include/mach/iomux-mx51.h
index df6acc0..1a6748b 100644
--- a/arch/arm/plat-mxc/include/mach/iomux-mx51.h
+++ b/arch/arm/plat-mxc/include/mach/iomux-mx51.h
@@ -15,6 +15,8 @@
#include <mach/iomux-v3.h>
+extern struct iomux_v3_pad_data imx51_babbage_pad_data;
+
/* Pad control groupings */
#define MX51_UART_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | PAD_CTL_DSE_HIGH | \
PAD_CTL_HYS | PAD_CTL_SRE_FAST)
--
1.7.4.1
More information about the devicetree-discuss
mailing list