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[PATCH v4 0/2] series to support for ICP DAS LP-8x4x (ARM PXA270)

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  [PATCH v4 0/2] series to support for ICP DAS LP-8x4x (ARM PXA270) Sergei Ianovich <ynvich@gmail.com> - 2015-12-09 23:30 +0100
    [PATCH v4 2/2] arm: pxa27x: support for ICP DAS LP-8x4x w/ DT Sergei Ianovich <ynvich@gmail.com> - 2015-12-09 23:40 +0100
      Re: [PATCH v4 2/2] arm: pxa27x: support for ICP DAS LP-8x4x w/ DT Rob Herring <robh@kernel.org> - 2015-12-11 04:00 +0100

#1287934 — [PATCH v4 0/2] series to support for ICP DAS LP-8x4x (ARM PXA270)

PXA device tree support has almost grown to the level when it becomes
possible to add device support without code changes. Thanks to everyone
involved.

The only obstacle with this device is character device major index
conflict between pxa serial and 8250 serial drivers. The first patch
fixes the conflict rewriting pxa serial using 8250 serial driver.

Device support is now close to 95%, pluggable module support is
at around 20%. It should be possible to handle most unsupported modules
by already working get_DI/DO/AO set_DO/AO functions. I am not including
support, since I didn't actually test the hardware. The same is true
about RS232/485 pluggable port.

ICP DAS calls LP-8x4x 'programmable automation controller'. It is
an industrial computer based on PXA270 SoC. They ship it with a 2.6.19
kernel and proprietary kernel module and userspace library to access
its industrial IO.

This patch allows to boot the device with a modern kernel with device
tree. It adds support for:
* MMC card interface on PXA270
* USB 1.1 port on PXA270
* 2 NOR flash devices
* 2 onboard ethernet Davicom DM9000 devices
* 3 serial UART ports on PXA270
* front panel red LED
* 64bit 1-wire system ID chip
* 16 kiB EEPROM (reading)

Support for the following devices will be added in separate patches,
since they are not currently supported by the kernel:
* DS1302 RTC
* 512kiB SRAM
* FPGA irq chip
* 3 built-in 16550A serial UART ports
* industrial IO parallel bus
* 10 position rotary switch
* 8 pin DIP switch
* 16 kiB EEPROM (writing)
* serial interface for digital and analog industrial IO modules on
  parallel bus (all I-87xxx modules)
* digital and analog industrial IO modules for parallel bus:
  ** I-8024 4 port analog output
  ** I-8041 32 port digital output
  ** I-8042 16 port digital output/16 port digital input

Not supported for now:
* VGA interface on PXA270 for lack of dts binding
* the rest of parallel bus (I-8xxx) modules for lack of hardware
* GPIO reset for lack of relevance (watchdog reset is working)

Signed-off-by: Sergei Ianovich <ynvich@gmail.com>
CC: Daniel Mack <zonque@gmail.com>
CC: Arnd Bergmann <arnd@arndb.de>
CC: Robert Jarzmik <robert.jarzmik@free.fr>
CC: Haojian Zhuang <haojian.zhuang@gmail.com>

Sergei Ianovich (2):
  serial: rewrite pxa2xx-uart to use 8250_core
  arm: pxa27x: support for ICP DAS LP-8x4x w/ DT

 .../devicetree/bindings/vendor-prefixes.txt        |   1 +
 arch/arm/boot/dts/Makefile                         |   3 +
 arch/arm/boot/dts/pxa27x-lp8x4x-i105.dts           |  50 ++
 arch/arm/boot/dts/pxa27x-lp8x4x.dts                | 260 ++++++
 arch/arm/configs/am200epdkit_defconfig             |   5 +-
 arch/arm/configs/cm_x2xx_defconfig                 |   5 +-
 arch/arm/configs/cm_x300_defconfig                 |   5 +-
 arch/arm/configs/colibri_pxa270_defconfig          |   5 +-
 arch/arm/configs/colibri_pxa300_defconfig          |   5 +-
 arch/arm/configs/corgi_defconfig                   |   6 +-
 arch/arm/configs/em_x270_defconfig                 |   5 +-
 arch/arm/configs/ezx_defconfig                     |   5 +-
 arch/arm/configs/h5000_defconfig                   |   5 +-
 arch/arm/configs/imote2_defconfig                  |   5 +-
 arch/arm/configs/lp8x4x_defconfig                  | 176 ++++
 arch/arm/configs/lpd270_defconfig                  |   5 +-
 arch/arm/configs/lubbock_defconfig                 |   5 +-
 arch/arm/configs/mainstone_defconfig               |   5 +-
 arch/arm/configs/mmp2_defconfig                    |   5 +-
 arch/arm/configs/pcm027_defconfig                  |   5 +-
 arch/arm/configs/pxa168_defconfig                  |   5 +-
 arch/arm/configs/pxa255-idp_defconfig              |   5 +-
 arch/arm/configs/pxa3xx_defconfig                  |   5 +-
 arch/arm/configs/pxa910_defconfig                  |   5 +-
 arch/arm/configs/raumfeld_defconfig                |   5 +-
 arch/arm/configs/spitz_defconfig                   |   6 +-
 arch/arm/configs/trizeps4_defconfig                |   5 +-
 arch/arm/configs/viper_defconfig                   |   6 +-
 arch/arm/configs/xcep_defconfig                    |   5 +-
 drivers/tty/serial/8250/8250_pxa.c                 | 177 ++++
 drivers/tty/serial/8250/Kconfig                    |   9 +
 drivers/tty/serial/8250/Makefile                   |   1 +
 drivers/tty/serial/Kconfig                         |  23 -
 drivers/tty/serial/Makefile                        |   1 -
 drivers/tty/serial/pxa.c                           | 968 ---------------------
 35 files changed, 749 insertions(+), 1043 deletions(-)
 create mode 100644 arch/arm/boot/dts/pxa27x-lp8x4x-i105.dts
 create mode 100644 arch/arm/boot/dts/pxa27x-lp8x4x.dts
 create mode 100644 arch/arm/configs/lp8x4x_defconfig
 create mode 100644 drivers/tty/serial/8250/8250_pxa.c
 delete mode 100644 drivers/tty/serial/pxa.c

-- 
2.6.2

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#1287939 — [PATCH v4 2/2] arm: pxa27x: support for ICP DAS LP-8x4x w/ DT

ICP DAS calls LP-8x4x 'programmable automation controller'. It is
an industrial computer based on PXA270 SoC. They ship it with a 2.6.19
kernel and proprietary kernel module and userspace library to access
its industrial IO.

This patch allows to boot a modern kernel with device tree on
the device. It adds support for:
* MMC card interface on PXA270
* USB 1.1 port on PXA270
* 2 NOR flash devices
* 2 onboard ethernet Davicom DM9000 devices
* 3 serial UART ports on PXA270
* front panel red LED
* 64bit 1-wire system ID chip
* 16 kiB EEPROM (reading)

Support for these devices will be added in separate patches, since
they are not currently supported by the kernel:
* DS1302 RTC
* 512kiB SRAM
* FPGA irq chip
* 3 built-in 16550A serial UART ports
* industrial IO parallel bus
* 10 position rotary switch
* 8 pin DIP switch
* 16 kiB EEPROM (writing)
* serial interface for digital and analog industrial IO modules on
  parallel bus (all I-87xxx modules)
* digital and analog industrial IO modules for parallel bus:
  ** I-8024 4 port analog output
  ** I-8041 32 port digital output
  ** I-8042 16 port digital output/16 port digital input

Not supported for now:
* VGA interface on PXA270 for lack of dts binding
* the rest of parallel bus (I-8xxx) modules for lack of hardware
* GPIO reset for lack of relevance (watchdog reset is working)

Newer LP-8x4x devices have twice as much flash and a different
partition structure otherwise being the same. When each device
is provided with a correct device tree, all of them can be booted
using the same kernel.

Signed-off-by: Sergei Ianovich <ynvich@gmail.com>
CC: Daniel Mack <zonque@gmail.com>
CC: Robert Jarzmik <robert.jarzmik@free.fr>
CC: Arnd Bergmann <arnd@arndb.de>
---
   v3..v4
   * support for newer flavor w/ 96Mb flash memory
   * use 'partitions' subnodes
   * move device-specific tweaking to device .dts file and drop
     patches to pxa27x.dtsi 

   v2..v3
   * added extbus which maps synchronous, static, and variable-latency
     I/O (VLIO) interfaces of PXA27x SoC as suggested by Arnd Bergmann
   * map is placed into platform include
   * configured existing kernel drivers to support:
     - front panel LED using gpio-leds
     - 64bit 1-wire system ID chip using w1-gpio
     - 16 kiB EEPROM using at24 over i2c-gpio
   * number change (06/16 -> 08/21)

   v1..v2
   * drop left-over extern declaration
   * use of_have_populated_dt() instead of a static variable
   * drop wildcards in compatible
   * drop machine-special machine description
   * number changed from 9 to 6 (dropped patches)

 .../devicetree/bindings/vendor-prefixes.txt        |   1 +
 arch/arm/boot/dts/Makefile                         |   3 +
 arch/arm/boot/dts/pxa27x-lp8x4x-i105.dts           |  50 ++++
 arch/arm/boot/dts/pxa27x-lp8x4x.dts                | 260 +++++++++++++++++++++
 arch/arm/configs/lp8x4x_defconfig                  | 176 ++++++++++++++
 5 files changed, 490 insertions(+)
 create mode 100644 arch/arm/boot/dts/pxa27x-lp8x4x-i105.dts
 create mode 100644 arch/arm/boot/dts/pxa27x-lp8x4x.dts
 create mode 100644 arch/arm/configs/lp8x4x_defconfig

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 55df1d4..2f1b078 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -109,6 +109,7 @@ honeywell	Honeywell
 hp	Hewlett Packard
 i2se	I2SE GmbH
 ibm	International Business Machines (IBM)
+icpdas	ICP DAS CO., LTD.
 idt	Integrated Device Technologies, Inc.
 iom	Iomega Corporation
 img	Imagination Technologies Ltd.
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 30bbc37..ed182ea 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -499,6 +499,9 @@ dtb-$(CONFIG_ARCH_ORION5X) += \
 	orion5x-rd88f5182-nas.dtb
 dtb-$(CONFIG_ARCH_PRIMA2) += \
 	prima2-evb.dtb
+dtb-$(CONFIG_MACH_PXA27X_DT) += \
+	pxa27x-lp8x4x.dtb \
+	pxa27x-lp8x4x-i105.dtb
 dtb-$(CONFIG_ARCH_QCOM) += \
 	qcom-apq8064-cm-qs600.dtb \
 	qcom-apq8064-ifc6410.dtb \
diff --git a/arch/arm/boot/dts/pxa27x-lp8x4x-i105.dts b/arch/arm/boot/dts/pxa27x-lp8x4x-i105.dts
new file mode 100644
index 0000000..903f5c7
--- /dev/null
+++ b/arch/arm/boot/dts/pxa27x-lp8x4x-i105.dts
@@ -0,0 +1,50 @@
+/* Device tree for ICP DAS LP-8x4x i105 flavor */
+
+#include "pxa27x-lp8x4x.dts"
+
+/ {
+	extbus {
+		flash@0 {
+			compatible = "cfi-flash";
+			reg = <0 0 0x04000000>;
+			bank-width = <4>;
+			device-width = <2>;
+
+			partitions {
+				#address-cells = <1>;
+				#size-cells = <1>;
+				fs@0 {
+					label = "u-boot";
+					reg = <0 0x40000>;
+				};
+				fs@40000 {
+					label = "settings";
+					reg = <0x40000 0x40000>;
+				};
+				fs@80000 {
+					label = "device_tree";
+					reg = <0x80000 0x40000>;
+				};
+				fs@c0000 {
+					label = "kernel";
+					reg = <0xc0000 0x2c0000>;
+				};
+				fs@300000 {
+					label = "root_fs";
+					reg = <0x380000 0x3c80000>;
+				};
+			};
+		};
+
+		flash@1 {
+			compatible = "cfi-flash";
+			reg = <1 0x0 0x02000000>;
+			bank-width = <2>;
+			device-width = <1>;
+			partitions {
+				#address-cells = <1>;
+				#size-cells = <1>;
+			};
+		};
+	};
+};
diff --git a/arch/arm/boot/dts/pxa27x-lp8x4x.dts b/arch/arm/boot/dts/pxa27x-lp8x4x.dts
new file mode 100644
index 0000000..bbb5b75
--- /dev/null
+++ b/arch/arm/boot/dts/pxa27x-lp8x4x.dts
@@ -0,0 +1,260 @@
+/* Device tree for ICP DAS LP-8x4x */
+/dts-v1/;
+
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include "pxa27x.dtsi"
+
+/ {
+	model = "ICP DAS LP-8x4x programmable automation controller";
+	compatible = "marvell,pxa270";
+
+	aliases {
+		ethernet0 = &eth0;
+		ethernet1 = &eth1;
+	};
+
+	memory {
+		reg = <0xa0000000 0x08000000>;
+	};
+
+	regulators {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		vmmc: regulator@0 {
+			compatible = "regulator-fixed";
+			reg = <0>;
+			regulator-name = "vmmc";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			regulator-always-on;
+		};
+	};
+
+	pxabus {
+		pxairq: interrupt-controller@40d00000 {
+			marvell,intc-priority;
+			marvell,intc-nr-irqs = <34>;
+		};
+
+		gpio: gpio@40e00000 {
+			interrupts = <8>, <9>, <10>;
+			interrupt-names = "gpio0", "gpio1", "gpio_mux";
+		};
+
+		uart@40100000 {
+			status = "okay";
+		};
+
+		uart@40200000 {
+			status = "okay";
+		};
+
+		uart@40700000 {
+			status = "okay";
+		};
+
+		mmc0: mmc@41100000 {
+			vmmc-supply = <&vmmc>;
+			status = "okay";
+		};
+
+		usb0: ohci@4c000000 {
+			marvell,port-mode = <3>;
+			marvell,oc-mode-perport;
+			marvell,enable-port1;
+			status = "okay";
+		};
+
+		leds {
+			compatible = "gpio-leds";
+
+			status {
+				gpios = <&gpio 84 1>;
+				linux,default-trigger = "heartbeat";
+			};
+		};
+
+		i2c: i2c-gpio {
+			compatible = "i2c-gpio";
+			gpios = <&gpio 22 0 /* sda */
+				 &gpio 12 0 /* scl */>;
+			i2c-gpio,delay-us = <1>;
+			i2c-gpio,timeout-ms = <1>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			eeprom@50 {
+				compatible = "atmel,24c128";
+				reg = <0x50>;
+				pagesize = <64>;
+			};
+		};
+
+		w1: w1-gpio {
+			compatible = "w1-gpio";
+			gpios = <&gpio 83 0>;
+		};
+	};
+
+	extbus {
+		/*
+		 * PXA27x synchrous, static and
+		 * variable-latency IO interfaces
+		 */
+		compatible = "simple-bus";
+
+		#address-cells = <2>; /* first cell is nCS, second is address */
+		#size-cells = <1>;
+		ranges = <0 0 0 0x04000000
+			  1 0 0x04000000 0x04000000
+			  2 0 0x08000000 0x04000000
+			  3 0 0x0c000000 0x04000000
+			  4 0 0x10000000 0x04000000
+			  5 0 0x14000000 0x04000000>;
+
+		flash@0 {
+			compatible = "cfi-flash";
+			reg = <0 0 0x02000000>;
+			bank-width = <4>;
+			device-width = <2>;
+
+			partitions {
+				#address-cells = <1>;
+				#size-cells = <1>;
+				fs@0 {
+					label = "u-boot";
+					reg = <0 0x40000>;
+				};
+				fs@40000 {
+					label = "settings";
+					reg = <0x40000 0x40000>;
+				};
+				fs@80000 {
+					label = "device_tree";
+					reg = <0x80000 0x40000>;
+				};
+				fs@c0000 {
+					label = "kernel";
+					reg = <0xc0000 0x240000>;
+				};
+				fs@300000 {
+					label = "root_fs";
+					reg = <0x300000 0x1d00000>;
+				};
+			};
+		};
+
+		flash@1 {
+			compatible = "cfi-flash";
+			reg = <1 0x0 0x01000000>;
+			bank-width = <2>;
+			device-width = <1>;
+			partitions {
+				#address-cells = <1>;
+				#size-cells = <1>;
+			};
+		};
+
+		netio@3 {
+			compatible = "simple-bus";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges = <0 3 0 0x02000000>;
+			interrupt-parent = <&gpio>;
+
+			eth0: eth@0 {
+				compatible = "davicom,dm9000";
+				reg = <0x0 0x2
+				       0x4000 0x2>;
+				interrupts = <9 IRQ_TYPE_EDGE_RISING>;
+				status = "okay";
+			};
+
+			eth1: eth@1000000 {
+				compatible = "davicom,dm9000";
+				reg = <0x1000000 0x2
+				       0x1004000 0x2>;
+				interrupts = <82 IRQ_TYPE_EDGE_RISING>;
+				status = "okay";
+			};
+		};
+
+		fpga@5 {
+			compatible = "simple-bus";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges = <0 5 0x3000000 0x10000>;
+			interrupt-parent = <&fpgairq>;
+
+			rtc@901c {
+				compatible = "dallas,rtc-ds1302";
+				reg = <0x901c 0x1>;
+				status = "okay";
+			};
+
+			sram@a000 {
+				compatible = "icpdas,sram-lp8x4x";
+				reg = <0xa000 0x1000
+				       0x901e 0x1>;
+
+				partitions {
+					#address-cells = <1>;
+					#size-cells = <1>;
+				};
+			};
+
+			fpgairq: irq@9006 {
+				compatible = "icpdas,irq-lp8x4x";
+				reg = <0x9006 0x16>;
+				interrupt-parent = <&gpio>;
+				interrupts = <3 IRQ_TYPE_EDGE_FALLING>;
+				#interrupt-cells = <1>;
+				interrupt-controller;
+				status = "okay";
+			};
+
+			uart@9050 {
+				compatible = "icpdas,uart-lp8x4x";
+				reg = <0x9050 0x10
+				       0x9030 0x02>;
+				interrupts = <13>;
+				status = "okay";
+			};
+
+			uart@9060 {
+				compatible = "icpdas,uart-lp8x4x";
+				reg = <0x9060 0x10
+				       0x9032 0x02>;
+				interrupts = <14>;
+				status = "okay";
+			};
+
+			uart@9070 {
+				compatible = "icpdas,uart-lp8x4x";
+				reg = <0x9070 0x10
+				       0x9034 0x02>;
+				interrupts = <15>;
+				status = "okay";
+			};
+
+			backplane {
+				compatible = "icpdas,backplane-lp8x4x";
+				reg = <0x0 0x2
+				       0x1000 0x10
+				       0x2000 0x10
+				       0x3000 0x10
+				       0x4000 0x10
+				       0x5000 0x10
+				       0x6000 0x10
+				       0x7000 0x10
+				       0x8000 0x10
+				       0x9002 0x2
+				       0x9004 0x2
+				       0x9046 0x2>;
+				eeprom-gpios = <&gpio 4 0>;
+			};
+		};
+	};
+};
diff --git a/arch/arm/configs/lp8x4x_defconfig b/arch/arm/configs/lp8x4x_defconfig
new file mode 100644
index 0000000..0eb87df
--- /dev/null
+++ b/arch/arm/configs/lp8x4x_defconfig
@@ -0,0 +1,176 @@
+# CONFIG_LOCALVERSION_AUTO is not set
+# CONFIG_SWAP is not set
+CONFIG_SYSVIPC=y
+CONFIG_NO_HZ=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_RCU_BOOST=y
+CONFIG_LOG_BUF_SHIFT=14
+CONFIG_NAMESPACES=y
+# CONFIG_UTS_NS is not set
+# CONFIG_IPC_NS is not set
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+# CONFIG_UID16 is not set
+# CONFIG_SHMEM is not set
+CONFIG_EMBEDDED=y
+# CONFIG_COMPAT_BRK is not set
+CONFIG_SLOB=y
+CONFIG_JUMP_LABEL=y
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+CONFIG_MODVERSIONS=y
+# CONFIG_LBDAF is not set
+CONFIG_BLK_CMDLINE_PARSER=y
+CONFIG_PARTITION_ADVANCED=y
+# CONFIG_EFI_PARTITION is not set
+# CONFIG_IOSCHED_DEADLINE is not set
+CONFIG_ARCH_PXA=y
+CONFIG_MACH_PXA27X_DT=y
+# CONFIG_ARM_THUMB is not set
+CONFIG_PREEMPT=y
+CONFIG_AEABI=y
+# CONFIG_COMPACTION is not set
+# CONFIG_CROSS_MEMORY_ATTACH is not set
+CONFIG_ZBOOT_ROM_TEXT=0x0
+CONFIG_ZBOOT_ROM_BSS=0x0
+CONFIG_CMDLINE="init=/sbin/init root=/dev/mmcblk0p1 rw rootfstype=ext4 console=ttyS0,115200 mem=128M rootwait"
+# CONFIG_SUSPEND is not set
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_UNIX=y
+CONFIG_INET=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_BOOTP=y
+CONFIG_BRIDGE=m
+CONFIG_BRIDGE_VLAN_FILTERING=y
+CONFIG_VLAN_8021Q=m
+CONFIG_VLAN_8021Q_GVRP=y
+CONFIG_VLAN_8021Q_MVRP=y
+# CONFIG_WIRELESS is not set
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+# CONFIG_FW_LOADER is not set
+CONFIG_MTD=y
+CONFIG_MTD_CMDLINE_PARTS=y
+CONFIG_MTD_BLOCK=y
+CONFIG_MTD_CFI=y
+CONFIG_MTD_CFI_ADV_OPTIONS=y
+CONFIG_MTD_CFI_GEOMETRY=y
+CONFIG_MTD_CFI_INTELEXT=y
+CONFIG_MTD_PHYSMAP_OF=y
+CONFIG_MTD_SRAM_LP8X4X=y
+CONFIG_PROC_DEVICETREE=y
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_LOOP_MIN_COUNT=2
+CONFIG_EEPROM_AT24=m
+CONFIG_LP8X4X_BUS=m
+CONFIG_SCSI=y
+# CONFIG_SCSI_PROC_FS is not set
+CONFIG_BLK_DEV_SD=y
+# CONFIG_SCSI_LOWLEVEL is not set
+CONFIG_NETDEVICES=y
+CONFIG_BONDING=m
+CONFIG_MACVLAN=m
+CONFIG_MACVTAP=m
+CONFIG_TUN=m
+# CONFIG_NET_VENDOR_ARC is not set
+# CONFIG_NET_CADENCE is not set
+# CONFIG_NET_VENDOR_BROADCOM is not set
+# CONFIG_NET_VENDOR_CIRRUS is not set
+CONFIG_DM9000=y
+CONFIG_DM9000_FORCE_SIMPLE_PHY_POLL=y
+# CONFIG_NET_VENDOR_FARADAY is not set
+# CONFIG_NET_VENDOR_INTEL is not set
+# CONFIG_NET_VENDOR_MARVELL is not set
+# CONFIG_NET_VENDOR_MICREL is not set
+# CONFIG_NET_VENDOR_NATSEMI is not set
+# CONFIG_NET_VENDOR_SEEQ is not set
+# CONFIG_NET_VENDOR_SMSC is not set
+# CONFIG_NET_VENDOR_STMICRO is not set
+# CONFIG_NET_VENDOR_VIA is not set
+# CONFIG_NET_VENDOR_WIZNET is not set
+CONFIG_PPP=m
+CONFIG_PPP_BSDCOMP=m
+CONFIG_PPP_DEFLATE=m
+CONFIG_PPPOE=m
+CONFIG_PPP_ASYNC=m
+CONFIG_PPP_SYNC_TTY=m
+CONFIG_SLIP=m
+CONFIG_SLIP_COMPRESSED=y
+# CONFIG_WLAN is not set
+CONFIG_INPUT_MOUSEDEV_SCREEN_X=800
+CONFIG_INPUT_MOUSEDEV_SCREEN_Y=600
+CONFIG_INPUT_EVDEV=y
+# CONFIG_INPUT_KEYBOARD is not set
+# CONFIG_INPUT_MOUSE is not set
+# CONFIG_SERIO is not set
+# CONFIG_DEVKMEM is not set
+CONFIG_SERIAL_8250=y
+# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_NR_UARTS=40
+CONFIG_SERIAL_8250_RUNTIME_UARTS=40
+CONFIG_SERIAL_8250_EXTENDED=y
+CONFIG_SERIAL_8250_MANY_PORTS=y
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_8250_PXA=y
+CONFIG_SERIAL_8250_LP8X4X=m
+CONFIG_HW_RANDOM=y
+CONFIG_I2C=m
+# CONFIG_I2C_COMPAT is not set
+CONFIG_I2C_GPIO=m
+CONFIG_W1=m
+CONFIG_W1_MASTER_GPIO=m
+CONFIG_W1_SLAVE_SMEM=m
+# CONFIG_HWMON is not set
+CONFIG_WATCHDOG=y
+CONFIG_SA1100_WATCHDOG=m
+CONFIG_REGULATOR=y
+CONFIG_REGULATOR_FIXED_VOLTAGE=y
+CONFIG_FB=y
+CONFIG_FB_PXA=y
+CONFIG_FRAMEBUFFER_CONSOLE=y
+CONFIG_LOGO=y
+CONFIG_USB=m
+CONFIG_USB_OHCI_HCD=m
+CONFIG_USB_ACM=m
+CONFIG_USB_PRINTER=m
+CONFIG_USB_STORAGE=m
+CONFIG_USB_SERIAL=m
+CONFIG_MMC=y
+CONFIG_MMC_PXA=y
+CONFIG_NEW_LEDS=y
+CONFIG_LEDS_CLASS=y
+CONFIG_LEDS_GPIO=y
+CONFIG_LEDS_TRIGGERS=y
+CONFIG_LEDS_TRIGGER_HEARTBEAT=y
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_DS1302=y
+CONFIG_RTC_DRV_PXA=m
+# CONFIG_IOMMU_SUPPORT is not set
+CONFIG_DMA_ENGINE=y
+CONFIG_DMA_VIRTUAL_CHANNELS=y
+CONFIG_DMA_OF=y
+CONFIG_PXA_DMA=y
+CONFIG_EXT2_FS=m
+CONFIG_EXT3_FS=y
+CONFIG_EXT4_FS=y
+CONFIG_REISERFS_FS=m
+CONFIG_ISO9660_FS=m
+CONFIG_MSDOS_FS=y
+CONFIG_VFAT_FS=y
+CONFIG_NTFS_FS=m
+CONFIG_NTFS_RW=y
+CONFIG_JFFS2_FS=y
+CONFIG_JFFS2_COMPRESSION_OPTIONS=y
+CONFIG_NFS_FS=y
+CONFIG_NFS_V4=y
+CONFIG_ROOT_NFS=y
+CONFIG_CIFS=m
+CONFIG_CIFS_STATS=y
+CONFIG_CODA_FS=m
+CONFIG_NLS_DEFAULT="cp855"
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_CODEPAGE_855=y
+CONFIG_NLS_ISO8859_1=y
+CONFIG_NLS_UTF8=y
+CONFIG_PRINTK_TIME=y
-- 
2.6.2

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#1289080 — Re: [PATCH v4 2/2] arm: pxa27x: support for ICP DAS LP-8x4x w/ DT

On Thu, Dec 10, 2015 at 01:28:08AM +0300, Sergei Ianovich wrote:
> ICP DAS calls LP-8x4x 'programmable automation controller'. It is
> an industrial computer based on PXA270 SoC. They ship it with a 2.6.19
> kernel and proprietary kernel module and userspace library to access
> its industrial IO.

2 comments, otherwise:

Acked-by: Rob Herring <robh@kernel.org>

> diff --git a/arch/arm/boot/dts/pxa27x-lp8x4x.dts b/arch/arm/boot/dts/pxa27x-lp8x4x.dts
> new file mode 100644
> index 0000000..bbb5b75
> --- /dev/null
> +++ b/arch/arm/boot/dts/pxa27x-lp8x4x.dts
> @@ -0,0 +1,260 @@
> +/* Device tree for ICP DAS LP-8x4x */
> +/dts-v1/;
> +
> +#include <dt-bindings/interrupt-controller/arm-gic.h>

Pretty sure this does not have a GIC.

> +#include "pxa27x.dtsi"
> +
> +/ {
> +	model = "ICP DAS LP-8x4x programmable automation controller";
> +	compatible = "marvell,pxa270";

You should have a compatible string for this board.

Rob
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