[PATCH v3] ARM: i.MX35: Add kernel oftree support
Uwe Kleine-König
u.kleine-koenig at pengutronix.de
Wed Sep 26 05:39:29 EDT 2012
From: Steffen Trumtrar <s.trumtrar at pengutronix.de>
This patch adds basic support for imx35-based devices to the kernel.
Signed-off-by: Steffen Trumtrar <s.trumtrar at pengutronix.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
---
Hello,
changes since v2:
- add l2 cache to dt
- drop pinctrl_provide_dummies
- some dt format nit picking
- drop selecting IMX_HAVE_PLATFORM_SPI_IMX
- drop unused hook for non-dt setup
arch/arm/boot/dts/imx35.dtsi | 260 ++++++++++++++++++++++++++++++++++
arch/arm/configs/imx_v6_v7_defconfig | 1 +
arch/arm/mach-imx/Kconfig | 11 ++
arch/arm/mach-imx/Makefile | 1 +
arch/arm/mach-imx/clk-imx35.c | 14 ++
arch/arm/mach-imx/imx35-dt.c | 52 +++++++
6 files changed, 339 insertions(+)
create mode 100644 arch/arm/boot/dts/imx35.dtsi
create mode 100644 arch/arm/mach-imx/imx35-dt.c
diff --git a/arch/arm/boot/dts/imx35.dtsi b/arch/arm/boot/dts/imx35.dtsi
new file mode 100644
index 0000000..800660c
--- /dev/null
+++ b/arch/arm/boot/dts/imx35.dtsi
@@ -0,0 +1,260 @@
+/*
+ * Copyright 2012 Steffen Trumtrar, Pengutronix
+ *
+ * based on imx27.dtsi
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License version 2 as published by the
+ * Free Software Foundation.
+ */
+
+/include/ "skeleton.dtsi"
+
+/ {
+ aliases {
+ serial0 = &uart1;
+ serial1 = &uart2;
+ serial2 = &uart3;
+ gpio0 = &gpio1;
+ gpio1 = &gpio2;
+ gpio2 = &gpio3;
+ };
+
+ avic: avic-interrupt-controller at 68000000 {
+ compatible = "fsl,imx35-avic", "fsl,avic";
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ reg = <0x68000000 0x10000000>;
+ };
+
+ clocks {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ckil {
+ compatible = "fsl,imx-ckil", "fixed-clock";
+ clock-frequency = <32768>;
+ };
+
+ osc {
+ compatible = "fsl,imx-osc", "fixed-clock";
+ clock-frequency = <24000000>;
+ };
+ };
+
+ soc {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "simple-bus";
+ interrupt-parent = <&avic>;
+ ranges;
+
+ l2-cache at 30000000 {
+ compatible = "arm,l210-cache";
+ reg = <0x30000000 0x1000>;
+ cache-unified;
+ cache-level = <2>;
+ };
+
+ aips at 43f00000 { /* AIPS1 */
+ compatible = "fsl,aips", "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0x43f00000 0x100000>;
+ ranges;
+
+ i2c1: i2c at 43f80000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "fsl,imx35-i2c", "fsl,imx1-i2c";
+ reg = <0x43f80000 0x4000>;
+ interrupts = <10>;
+ status = "disabled";
+ };
+
+ i2c3: i2c at 43f84000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "fsl,imx35-i2c", "fsl,imx1-i2c";
+ reg = <0x43f84000 0x4000>;
+ interrupts = <3>;
+ status = "disabled";
+ };
+
+ uart1: serial at 43f90000 {
+ compatible = "fsl,imx35-uart", "fsl,imx21-uart";
+ reg = <0x43f90000 0x4000>;
+ interrupts = <45>;
+ status = "disabled";
+ };
+
+ uart2: serial at 43f94000 {
+ compatible = "fsl,imx35-uart", "fsl,imx21-uart";
+ reg = <0x43f94000 0x4000>;
+ interrupts = <32>;
+ status = "disabled";
+ };
+
+ i2c2: i2c at 43f98000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "fsl,imx35-i2c", "fsl,imx1-i2c";
+ reg = <0x43f98000 0x4000>;
+ interrupts = <4>;
+ status = "disabled";
+ };
+
+ ssi1: ssi at 43fa0000 {
+ compatible = "fsl,imx35-ssi", "fsl,imx21-ssi";
+ reg = <0x43fa0000 0x4000>;
+ interrupts = <11>;
+ fsl,ssi-dma-events = <29 28 27 26>;
+ status = "disabled";
+ };
+
+ iomuxc at 43fac000 {
+ compatible = "fsl,imx35-iomuxc";
+ reg = <0x43fac000 0x4000>;
+
+ i2c3 {
+ pinctrl_i2c3_1: i2c3grp-1 {
+ fsl,pins = <773 0x1c0 /* MX35_PAD_ATA_DATA12__I2C3_SCL */
+ 777 0x1c0>; /* MX35_PAD_ATA_DATA13__I2C3_SDA */
+ };
+ };
+
+ can1 {
+ pinctrl_can1_1: can1grp-1 {
+ fsl,pins = <223 0x1c0 /* MX35_PAD_I2C2_CLK__CAN1_TXCAN */
+ 228 0x1c0>; /* MX35_PAD_I2C2_DAT__CAN1_RXCAN */
+ };
+ };
+
+ can2 {
+ pinctrl_can2_1: can2grp-1 {
+ fsl,pins = <291 0x1c0 /* MX35_PAD_TX5_RX0__CAN2_TXCAN */
+ 298 0x1c0>; /* MX35_PAD_TX4_RX1__CAN2_RXCAN */
+ };
+ };
+ };
+ };
+
+ spba at 50000000 {
+ compatible = "fsl,spba-bus", "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0x50000000 0x100000>;
+ ranges;
+
+ uart3: serial at 5000c000 {
+ compatible = "fsl,imx35-uart", "fsl,imx21-uart";
+ reg = <0x5000c000 0x4000>;
+ interrupts = <18>;
+ status = "disabled";
+ };
+
+ fec at 50038000 {
+ compatible = "fsl,imx35-fec", "fsl,imx27-fec";
+ reg = <0x50038000 0x4000>;
+ interrupts = <57>;
+ status = "disabled";
+ };
+ };
+
+ aips at 53f00000 { /* AIPS2 */
+ compatible = "fsl,aips", "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0x53f00000 0x100000>;
+ ranges;
+
+ gpio3: gpio at 0x53fa4000 {
+ compatible = "fsl,imx35-gpio", "fsl,imx31-gpio";
+ reg = <0x53fa4000 0x4000>;
+ interrupts = <56>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ esdhc1: esdhc at 53fb4000 {
+ compatible = "fsl,mx35-sdhc";
+ reg = <0x53fb4000 0x4000>;
+ interrupts = <7>;
+ status = "disabled";
+ };
+
+ esdhc2: esdhc at 53fb8000 {
+ compatible = "fsl,mx35-sdhc";
+ reg = <0x53fb8000 0x4000>;
+ interrupts = <8>;
+ status = "disabled";
+ };
+
+ esdhc3: esdhc at 53fbc000 {
+ compatible = "fsl,mx35-sdhc";
+ reg = <0x53fbc000 0x4000>;
+ interrupts = <9>;
+ status = "disabled";
+ };
+
+ gpio1: gpio at 0x53fcc000 {
+ compatible = "fsl,imx35-gpio", "fsl,imx31-gpio";
+ reg = <0x53fcc000 0x4000>;
+ interrupts = <52>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ gpio2: gpio at 0x53fd0000 {
+ compatible = "fsl,imx35-gpio", "fsl,imx31-gpio";
+ reg = <0x53fd0000 0x4000>;
+ interrupts = <51>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ wdog at 53fdc000 {
+ compatible = "fsl,imx35-wdt", "fsl,imx2-wdt";
+ reg = <0x53fdc000 0x4000>;
+ interrupts = <55>;
+ };
+
+ can at 53fe4000 {
+ compatible = "fsl,imx35-flexcan", "fsl,p1010-flexcan";
+ reg = <0x53fe4000 0x1000>;
+ interrupts = <43>;
+ status = "disabled";
+ };
+
+ can at 53fe8000 {
+ compatible = "fsl,imx35-flexcan", "fsl,p1010-flexcan";
+ reg = <0x53fe8000 0x1000>;
+ interrupts = <44>;
+ status = "disabled";
+ };
+ };
+ emi at 80000000 { /* External Memory Interface */
+ compatible = "fsl,emi", "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0x80000000 0x40000000>;
+ ranges;
+
+ nand at bb000000 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ compatible = "fsl,imx35-nand", "fsl,imx25-nand";
+ reg = <0xbb000000 0x2000>;
+ interrupts = <33>;
+ status = "disabled";
+ };
+ };
+ };
+};
diff --git a/arch/arm/configs/imx_v6_v7_defconfig b/arch/arm/configs/imx_v6_v7_defconfig
index 3c9f32f..eafeeb1 100644
--- a/arch/arm/configs/imx_v6_v7_defconfig
+++ b/arch/arm/configs/imx_v6_v7_defconfig
@@ -28,6 +28,7 @@ CONFIG_MACH_ARMADILLO5X0=y
CONFIG_MACH_KZM_ARM11_01=y
CONFIG_MACH_PCM043=y
CONFIG_MACH_MX35_3DS=y
+CONFIG_MACH_IMX35_DT=y
CONFIG_MACH_VPR200=y
CONFIG_MACH_IMX51_DT=y
CONFIG_MACH_MX51_3DS=y
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index afd542a..86d6ab5 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -654,6 +654,17 @@ config MACH_VPR200
Include support for VPR200 platform. This includes specific
configurations for the board and its peripherals.
+config MACH_IMX35_DT
+ bool "Support i.MX35 platforms from device tree"
+ select SOC_IMX35
+ select IMX_HAVE_PLATFORM_IMX2_WDT
+ select IMX_HAVE_PLATFORM_MXC_NAND
+ select PINCTRL
+ select PINCTRL_IMX35
+ help
+ Include support for Freescale i.MX35 based platforms
+ using the device tree for discovery
+
comment "i.MX5 platforms:"
config MACH_MX50_RDP
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index d004d37..1fc22b5 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -66,6 +66,7 @@ obj-$(CONFIG_MACH_MX35_3DS) += mach-mx35_3ds.o
obj-$(CONFIG_MACH_EUKREA_CPUIMX35SD) += mach-cpuimx35.o
obj-$(CONFIG_MACH_EUKREA_MBIMXSD35_BASEBOARD) += eukrea_mbimxsd35-baseboard.o
obj-$(CONFIG_MACH_VPR200) += mach-vpr200.o
+obj-$(CONFIG_MACH_IMX35_DT) += imx35-dt.o
obj-$(CONFIG_DEBUG_LL) += lluart.o
obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o
diff --git a/arch/arm/mach-imx/clk-imx35.c b/arch/arm/mach-imx/clk-imx35.c
index 65fb8bc..ee9320e 100644
--- a/arch/arm/mach-imx/clk-imx35.c
+++ b/arch/arm/mach-imx/clk-imx35.c
@@ -202,7 +202,9 @@ int __init mx35_clocks_init()
i, PTR_ERR(clk[i]));
clk_register_clkdev(clk[pata_gate], NULL, "pata_imx");
+ clk_register_clkdev(clk[can1_gate], NULL, "53fe4000.can");
clk_register_clkdev(clk[can1_gate], NULL, "flexcan.0");
+ clk_register_clkdev(clk[can2_gate], NULL, "53fe8000.can");
clk_register_clkdev(clk[can2_gate], NULL, "flexcan.1");
clk_register_clkdev(clk[cspi1_gate], "per", "imx35-cspi.0");
clk_register_clkdev(clk[cspi1_gate], "ipg", "imx35-cspi.0");
@@ -219,12 +221,16 @@ int __init mx35_clocks_init()
clk_register_clkdev(clk[esdhc3_gate], "per", "sdhci-esdhc-imx35.2");
clk_register_clkdev(clk[ipg], "ipg", "sdhci-esdhc-imx35.2");
clk_register_clkdev(clk[ahb], "ahb", "sdhci-esdhc-imx35.2");
+ clk_register_clkdev(clk[fec_gate], NULL, "50038000.fec");
/* i.mx35 has the i.mx27 type fec */
clk_register_clkdev(clk[fec_gate], NULL, "imx27-fec.0");
clk_register_clkdev(clk[gpt_gate], "per", "imx-gpt.0");
clk_register_clkdev(clk[ipg], "ipg", "imx-gpt.0");
+ clk_register_clkdev(clk[i2c1_gate], NULL, "43f80000.i2c");
clk_register_clkdev(clk[i2c1_gate], NULL, "imx-i2c.0");
+ clk_register_clkdev(clk[i2c2_gate], NULL, "43f98000.i2c");
clk_register_clkdev(clk[i2c2_gate], NULL, "imx-i2c.1");
+ clk_register_clkdev(clk[i2c3_gate], NULL, "43f84000.i2c");
clk_register_clkdev(clk[i2c3_gate], NULL, "imx-i2c.2");
clk_register_clkdev(clk[ipu_gate], NULL, "ipu-core");
clk_register_clkdev(clk[ipu_gate], NULL, "mx3_sdc_fb");
@@ -232,6 +238,12 @@ int __init mx35_clocks_init()
clk_register_clkdev(clk[sdma_gate], NULL, "imx35-sdma");
clk_register_clkdev(clk[ssi1_gate], NULL, "imx-ssi.0");
clk_register_clkdev(clk[ssi2_gate], NULL, "imx-ssi.1");
+ clk_register_clkdev(clk[uart1_gate], "per", "43f90000.serial");
+ clk_register_clkdev(clk[ipg], "ipg", "43f90000.serial");
+ clk_register_clkdev(clk[uart2_gate], "per", "43f94000.serial");
+ clk_register_clkdev(clk[ipg], "ipg", "43f94000.serial");
+ clk_register_clkdev(clk[uart3_gate], "per", "5000c000.serial");
+ clk_register_clkdev(clk[ipg], "ipg", "5000c000.serial");
/* i.mx35 has the i.mx21 type uart */
clk_register_clkdev(clk[uart1_gate], "per", "imx21-uart.0");
clk_register_clkdev(clk[ipg], "ipg", "imx21-uart.0");
@@ -251,7 +263,9 @@ int __init mx35_clocks_init()
clk_register_clkdev(clk[usb_div], "per", "fsl-usb2-udc");
clk_register_clkdev(clk[ipg], "ipg", "fsl-usb2-udc");
clk_register_clkdev(clk[usbotg_gate], "ahb", "fsl-usb2-udc");
+ clk_register_clkdev(clk[wdog_gate], NULL, "53fdc000.wdog");
clk_register_clkdev(clk[wdog_gate], NULL, "imx2-wdt.0");
+ clk_register_clkdev(clk[nfc_div], NULL, "bb000000.nand");
clk_register_clkdev(clk[nfc_div], NULL, "mxc_nand.0");
clk_prepare_enable(clk[spba_gate]);
diff --git a/arch/arm/mach-imx/imx35-dt.c b/arch/arm/mach-imx/imx35-dt.c
new file mode 100644
index 0000000..3e7d62f
--- /dev/null
+++ b/arch/arm/mach-imx/imx35-dt.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2012 Steffen Trumtrar, Pengutronix
+ *
+ * based on imx27-dt.c
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License version 2 as published by the
+ * Free Software Foundation.
+ */
+
+#include <linux/irq.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 <asm/hardware/cache-l2x0.h>
+#include <mach/common.h>
+#include <mach/mx35.h>
+
+static void __init imx35_dt_init(void)
+{
+ l2x0_of_init(0x00030024, 0x00000000);
+
+ of_platform_populate(NULL, of_default_bus_match_table,
+ NULL, NULL);
+}
+
+static void __init imx35_timer_init(void)
+{
+ mx35_clocks_init();
+}
+
+static struct sys_timer imx35_timer = {
+ .init = imx35_timer_init,
+};
+
+static const char *imx35_dt_board_compat[] __initdata = {
+ "fsl,imx35",
+ NULL
+};
+
+DT_MACHINE_START(IMX35_DT, "Freescale i.MX35 (Device Tree Support)")
+ .map_io = mx35_map_io,
+ .init_early = imx35_init_early,
+ .init_irq = mx35_init_irq,
+ .handle_irq = imx35_handle_irq,
+ .timer = &imx35_timer,
+ .init_machine = imx35_dt_init,
+ .dt_compat = imx35_dt_board_compat,
+ .restart = mxc_restart,
+MACHINE_END
--
1.7.10.4
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