DORMANTno replies REVIEWED: 1 (0M)

1 review trailer.

[PATCH V4] Add support for generic BCM SoC chipsets

From: Christian Daudt <hidden>
Date: 2012-11-17 16:13:51
Subsystem: arm and arm64 soc sub-architectures (common parts), arm port, broadcom bcm281xx/bcm11xxx/bcm216xx arm architecture, open firmware and flattened device tree bindings, the rest · Maintainers: Arnd Bergmann, Krzysztof Kozlowski, Alexandre Belloni, Linus Walleij, Russell King, Florian Fainelli, Ray Jui, Scott Branden, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds

In order to start upstreaming Broadcom SoC support, create
a starting hierarchy, arch and dts files.
The first support SoC family that is planned is the
BCM281XX (BCM11130/11140/11351/28145/28155) family of dual A9 mobile
SoC cores.
This code is just the skeleton code for get the machine upstreamed. It
has been made MULTIPLATFORM compatible.
Next steps
----------
Upstream a basic set of drivers - sufficient for a console boot to
ramdisk. These will includer timer, gpio, i2c drivers.
After this basic set, we will proceed with a more comprehensive set
of drivers for the 281XX SoC family.

v2 patch mods
--------
 - Remove l2x0_of_init call as there were problems with the code.
   A separate patch will be submitted with cache init code
 - Rename capri files and refs to bcm281xx-based names
 - Add bcm281xx binding doc
 - various misc cleanups

v3 patch mods
-------------
 - Remove extra #include lines
 - Remove remaining references to capri
 - dt uart chipset string added
 - cleaned up chip # references

v4 patch mods
-------------
 - swap order of compatible definitions for uart
 - fix typo

Signed-off-by: Christian Daudt <redacted>
Reviewed-by: Stephen Warren <redacted>
---
 .../devicetree/bindings/arm/bcm/bcm281xx.txt       |    8 ++
 arch/arm/Kconfig                                   |    2 +
 arch/arm/Makefile                                  |    1 +
 arch/arm/boot/dts/Makefile                         |    1 +
 arch/arm/boot/dts/bcm11351-brt.dts                 |   30 +++++
 arch/arm/boot/dts/bcm281xx.dtsi                    |   50 +++++++++
 arch/arm/configs/bcm_defconfig                     |  114 ++++++++++++++++++++
 arch/arm/mach-bcm/Kconfig                          |   19 ++++
 arch/arm/mach-bcm/Makefile                         |   13 +++
 arch/arm/mach-bcm/board_bcm.c                      |   57 ++++++++++
 10 files changed, 295 insertions(+), 0 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/arm/bcm/bcm281xx.txt
 create mode 100644 arch/arm/boot/dts/bcm11351-brt.dts
 create mode 100644 arch/arm/boot/dts/bcm281xx.dtsi
 create mode 100644 arch/arm/configs/bcm_defconfig
 create mode 100644 arch/arm/mach-bcm/Kconfig
 create mode 100644 arch/arm/mach-bcm/Makefile
 create mode 100644 arch/arm/mach-bcm/board_bcm.c
diff --git a/Documentation/devicetree/bindings/arm/bcm/bcm281xx.txt b/Documentation/devicetree/bindings/arm/bcm/bcm281xx.txt
new file mode 100644
index 0000000..c47200f
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/bcm/bcm281xx.txt
@@ -0,0 +1,8 @@
+Broadcom BCM281XX device tree bindings
+-------------------------------------------
+
+Boards with the bcm281xx SoC family shall have the following properties:
+
+Required root node property:
+
+compatible = "bcm,bcm281xx";
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index ade7e92..3da77ba 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1022,6 +1022,8 @@ source "arch/arm/mach-mvebu/Kconfig"
 
 source "arch/arm/mach-at91/Kconfig"
 
+source "arch/arm/mach-bcm/Kconfig"
+
 source "arch/arm/mach-clps711x/Kconfig"
 
 source "arch/arm/mach-cns3xxx/Kconfig"
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 5f914fc..8523fdb 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -137,6 +137,7 @@ textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
 # Machine directory name.  This list is sorted alphanumerically
 # by CONFIG_* macro name.
 machine-$(CONFIG_ARCH_AT91)		+= at91
+machine-$(CONFIG_ARCH_BCM)		+= bcm
 machine-$(CONFIG_ARCH_BCM2835)		+= bcm2835
 machine-$(CONFIG_ARCH_CLPS711X)		+= clps711x
 machine-$(CONFIG_ARCH_CNS3XXX)		+= cns3xxx
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index f37cf9f..6b3392b 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -17,6 +17,7 @@ dtb-$(CONFIG_ARCH_AT91) += aks-cdu.dtb \
 	usb_a9263.dtb \
 	usb_a9g20.dtb
 dtb-$(CONFIG_ARCH_BCM2835) += bcm2835-rpi-b.dtb
+dtb-$(CONFIG_ARCH_BCM) += bcm11351-brt.dtb
 dtb-$(CONFIG_ARCH_DOVE) += dove-cm-a510.dtb \
 	dove-cubox.dtb \
 	dove-dove-db.dtb
diff --git a/arch/arm/boot/dts/bcm11351-brt.dts b/arch/arm/boot/dts/bcm11351-brt.dts
new file mode 100644
index 0000000..d9379d0
--- /dev/null
+++ b/arch/arm/boot/dts/bcm11351-brt.dts
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2012 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+/dts-v1/;
+
+/include/ "bcm281xx.dtsi"
+
+/ {
+	model = "BCM11351 BRT board";
+	compatible = "bcm,bcm11351-brt", "bcm,bcm281xx";
+
+	memory {
+		reg = <0x80000000 0x40000000>; /* 1 GB */
+	};
+
+	uart at 3e000000 {
+		status = "okay";
+	};
+
+};
diff --git a/arch/arm/boot/dts/bcm281xx.dtsi b/arch/arm/boot/dts/bcm281xx.dtsi
new file mode 100644
index 0000000..649e48c
--- /dev/null
+++ b/arch/arm/boot/dts/bcm281xx.dtsi
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2012 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+/include/ "skeleton.dtsi"
+
+/ {
+	model = "BCM281xx SoC";
+	compatible = "bcm,bcm281xx";
+	interrupt-parent = <&gic>;
+
+	chosen {
+		bootargs = "console=ttyS0,115200n8";
+	};
+
+	gic: interrupt-controller at 3ff00100 {
+		compatible = "arm,cortex-a9-gic";
+		#interrupt-cells = <3>;
+		#address-cells = <0>;
+		interrupt-controller;
+		reg = <0x3ff01000 0x1000>,
+		      <0x3ff00100 0x100>;
+	};
+
+	uart at 3e000000 {
+		compatible = "bcm,bcm281xx-sw-apb-uart", "snps,dw-apb-uart";
+		status = "disabled";
+		reg = <0x3e000000 0x1000>;
+		clock-frequency = <13000000>;
+		interrupts = <0x0 67 0x4>;
+		reg-shift = <2>;
+		reg-io-width = <4>;
+	};
+
+	L2: l2-cache {
+		    compatible = "arm,pl310-cache";
+		    reg = <0x3ff20000 0x1000>;
+		    cache-unified;
+		    cache-level = <2>;
+	};
+};
diff --git a/arch/arm/configs/bcm_defconfig b/arch/arm/configs/bcm_defconfig
new file mode 100644
index 0000000..e3bf2d6
--- /dev/null
+++ b/arch/arm/configs/bcm_defconfig
@@ -0,0 +1,114 @@
+CONFIG_EXPERIMENTAL=y
+# CONFIG_LOCALVERSION_AUTO is not set
+# CONFIG_SWAP is not set
+CONFIG_SYSVIPC=y
+CONFIG_NO_HZ=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_BSD_PROCESS_ACCT_V3=y
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_LOG_BUF_SHIFT=19
+CONFIG_CGROUPS=y
+CONFIG_CGROUP_FREEZER=y
+CONFIG_CGROUP_DEVICE=y
+CONFIG_CGROUP_CPUACCT=y
+CONFIG_RESOURCE_COUNTERS=y
+CONFIG_CGROUP_SCHED=y
+CONFIG_BLK_CGROUP=y
+CONFIG_NAMESPACES=y
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_SYSCTL_SYSCALL=y
+CONFIG_EMBEDDED=y
+# CONFIG_COMPAT_BRK is not set
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_BLK_DEV_BSG is not set
+CONFIG_PARTITION_ADVANCED=y
+CONFIG_EFI_PARTITION=y
+CONFIG_ARCH_BCM=y
+CONFIG_ARM_THUMBEE=y
+CONFIG_ARM_ERRATA_743622=y
+CONFIG_PREEMPT=y
+CONFIG_AEABI=y
+# CONFIG_OABI_COMPAT is not set
+# CONFIG_COMPACTION is not set
+CONFIG_ZBOOT_ROM_TEXT=0x0
+CONFIG_ZBOOT_ROM_BSS=0x0
+CONFIG_ARM_APPENDED_DTB=y
+CONFIG_CMDLINE="console=ttyS0,115200n8 mem=128M"
+CONFIG_CPU_IDLE=y
+CONFIG_VFP=y
+CONFIG_NEON=y
+# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
+CONFIG_PM_RUNTIME=y
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_PROC_DEVICETREE=y
+# CONFIG_BLK_DEV is not set
+CONFIG_SCSI=y
+CONFIG_BLK_DEV_SD=y
+CONFIG_CHR_DEV_SG=y
+CONFIG_SCSI_MULTI_LUN=y
+CONFIG_SCSI_SCAN_ASYNC=y
+CONFIG_INPUT_FF_MEMLESS=y
+CONFIG_INPUT_JOYDEV=y
+CONFIG_INPUT_EVDEV=y
+# CONFIG_KEYBOARD_ATKBD is not set
+# CONFIG_INPUT_MOUSE is not set
+CONFIG_INPUT_TOUCHSCREEN=y
+CONFIG_INPUT_MISC=y
+CONFIG_INPUT_UINPUT=y
+# CONFIG_SERIO is not set
+# CONFIG_LEGACY_PTYS is not set
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_EXTENDED=y
+CONFIG_SERIAL_8250_MANY_PORTS=y
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_8250_RSA=y
+CONFIG_SERIAL_8250_DW=y
+CONFIG_HW_RANDOM=y
+CONFIG_I2C=y
+CONFIG_I2C_CHARDEV=y
+# CONFIG_HWMON is not set
+CONFIG_VIDEO_OUTPUT_CONTROL=y
+CONFIG_FB=y
+CONFIG_BACKLIGHT_LCD_SUPPORT=y
+CONFIG_LCD_CLASS_DEVICE=y
+CONFIG_BACKLIGHT_CLASS_DEVICE=y
+# CONFIG_USB_SUPPORT is not set
+CONFIG_NEW_LEDS=y
+CONFIG_LEDS_CLASS=y
+CONFIG_LEDS_TRIGGERS=y
+CONFIG_LEDS_TRIGGER_TIMER=y
+CONFIG_LEDS_TRIGGER_HEARTBEAT=y
+CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
+CONFIG_AUTOFS4_FS=y
+CONFIG_FUSE_FS=y
+CONFIG_MSDOS_FS=y
+CONFIG_VFAT_FS=y
+CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_CONFIGFS_FS=y
+# CONFIG_MISC_FILESYSTEMS is not set
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_ISO8859_1=y
+CONFIG_PRINTK_TIME=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_DEBUG_FS=y
+CONFIG_DETECT_HUNG_TASK=y
+CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=110
+CONFIG_BOOTPARAM_HUNG_TASK_PANIC=y
+CONFIG_DEBUG_INFO=y
+# CONFIG_FTRACE is not set
+CONFIG_DEBUG_LL=y
+CONFIG_CRC_CCITT=y
+CONFIG_CRC_T10DIF=y
+CONFIG_CRC_ITU_T=y
+CONFIG_CRC7=y
+CONFIG_XZ_DEC=y
+CONFIG_AVERAGE=y
diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig
new file mode 100644
index 0000000..48705c1
--- /dev/null
+++ b/arch/arm/mach-bcm/Kconfig
@@ -0,0 +1,19 @@
+config ARCH_BCM
+	bool "Broadcom SoC" if ARCH_MULTI_V7
+	depends on MMU
+	select ARCH_REQUIRE_GPIOLIB
+	select ARM_ERRATA_754322
+	select ARM_ERRATA_764369 if SMP
+	select ARM_GIC
+	select CPU_V7
+	select GENERIC_CLOCKEVENTS
+	select GENERIC_GPIO
+	select GENERIC_TIME
+	select GPIO_BCM
+	select SPARSE_IRQ
+	select TICK_ONESHOT
+	help
+	  This enables support for system based on Broadcom SoCs.
+	  It currently supports the 'BCM281XX' family, which includes
+	  BCM11130, BCM11140, BCM11351, BCM28145 and
+	  BCM28155 variants.
diff --git a/arch/arm/mach-bcm/Makefile b/arch/arm/mach-bcm/Makefile
new file mode 100644
index 0000000..bbf4122
--- /dev/null
+++ b/arch/arm/mach-bcm/Makefile
@@ -0,0 +1,13 @@
+#
+# Copyright (C) 2012 Broadcom Corporation
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation version 2.
+#
+# This program is distributed "as is" WITHOUT ANY WARRANTY of any
+# kind, whether express or implied; without even the implied warranty
+# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+obj-$(CONFIG_ARCH_BCM) := board_bcm.o
diff --git a/arch/arm/mach-bcm/board_bcm.c b/arch/arm/mach-bcm/board_bcm.c
new file mode 100644
index 0000000..c303582
--- /dev/null
+++ b/arch/arm/mach-bcm/board_bcm.c
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2012 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach/arch.h>
+#include <asm/hardware/gic.h>
+
+#include <asm/mach/time.h>
+
+static const struct of_device_id irq_match[] = {
+	{.compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
+	{}
+};
+
+static void timer_init(void)
+{
+}
+
+static struct sys_timer timer = {
+	.init = timer_init,
+};
+
+static void __init init_irq(void)
+{
+	of_irq_init(irq_match);
+}
+
+static void __init board_init(void)
+{
+	of_platform_populate(NULL, of_default_bus_match_table, NULL,
+		&platform_bus);
+}
+
+static const char * const bcm281xx_dt_compat[] = { "bcm,bcm281xx", NULL, };
+
+DT_MACHINE_START(BCM281XX_DT, "Broadcom Application Processor")
+	.init_irq = init_irq,
+	.timer = &timer,
+	.init_machine = board_init,
+	.dt_compat = bcm281xx_dt_compat,
+	.handle_irq = gic_handle_irq,
+MACHINE_END
-- 
1.7.1
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help