[PATCH v6] MIPS: NI 169445 board support

From: Nathan Sullivan
Date: Tue Jul 18 2017 - 14:34:16 EST

Support the National Instruments 169445 board.

Signed-off-by: Nathan Sullivan <nathan.sullivan@xxxxxx>
---
Changes since v5:

- make device tree addresses on the internal bus relative, and compile with
W=2 to be sure they are in the right format.

Documentation/devicetree/bindings/mips/ni.txt | 7 ++
MAINTAINERS | 8 ++
arch/mips/boot/dts/Makefile | 1 +
arch/mips/boot/dts/ni/169445.dts | 100 ++++++++++++++++++++++++
arch/mips/boot/dts/ni/Makefile | 7 ++
arch/mips/configs/generic/board-ni169445.config | 27 +++++++
arch/mips/generic/Kconfig | 6 ++
arch/mips/generic/vmlinux.its.S | 25 ++++++
8 files changed, 181 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mips/ni.txt
create mode 100644 arch/mips/boot/dts/ni/169445.dts
create mode 100644 arch/mips/boot/dts/ni/Makefile
create mode 100644 arch/mips/configs/generic/board-ni169445.config

diff --git a/Documentation/devicetree/bindings/mips/ni.txt b/Documentation/devicetree/bindings/mips/ni.txt
new file mode 100644
index 0000000..722bf2d
--- /dev/null
+++ b/Documentation/devicetree/bindings/mips/ni.txt
@@ -0,0 +1,7 @@
+National Instruments MIPS platforms
+
+required root node properties:
+ - compatible: must be "ni,169445"
+
+CPU Nodes
+ - compatible: must be "mti,mips14KEc"
diff --git a/MAINTAINERS b/MAINTAINERS
index 7d9bd4a..73fa2e0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9294,6 +9294,14 @@ F: include/linux/sunrpc/
F: include/uapi/linux/nfs*
F: include/uapi/linux/sunrpc/

+NI169445 MIPS ARCHITECTURE
+M: Nathan Sullivan <nathan.sullivan@xxxxxx>
+L: linux-mips@xxxxxxxxxxxxxx
+S: Maintained
+F: arch/mips/boot/dts/ni/
+F: arch/mips/configs/generic/board-ni169445.config
+F: Documentation/devicetree/bindings/mips/ni.txt
+
NILFS2 FILESYSTEM
M: Ryusuke Konishi <konishi.ryusuke@xxxxxxxxxxxxx>
L: linux-nilfs@xxxxxxxxxxxxxxx
diff --git a/arch/mips/boot/dts/Makefile b/arch/mips/boot/dts/Makefile
index b9db492..27b0f37 100644
--- a/arch/mips/boot/dts/Makefile
+++ b/arch/mips/boot/dts/Makefile
@@ -4,6 +4,7 @@ dts-dirs += img
dts-dirs += ingenic
dts-dirs += lantiq
dts-dirs += mti
+dts-dirs += ni
dts-dirs += netlogic
dts-dirs += pic32
dts-dirs += qca
diff --git a/arch/mips/boot/dts/ni/169445.dts b/arch/mips/boot/dts/ni/169445.dts
new file mode 100644
index 0000000..5389ef4
--- /dev/null
+++ b/arch/mips/boot/dts/ni/169445.dts
@@ -0,0 +1,100 @@
+/dts-v1/;
+
+/ {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "ni,169445";
+
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ cpu@0 {
+ device_type = "cpu";
+ compatible = "mti,mips14KEc";
+ clocks = <&baseclk>;
+ reg = <0>;
+ };
+ };
+
+ memory@0 {
+ device_type = "memory";
+ reg = <0x0 0x10000000>;
+ };
+
+ baseclk: baseclock {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <50000000>;
+ };
+
+ cpu_intc: interrupt-controller {
+ #address-cells = <0>;
+ compatible = "mti,cpu-interrupt-controller";
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ };
+
+ ahb@1f300000 {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x0 0x1f300000 0x80FFF>;
+
+ gpio1: gpio@10 {
+ compatible = "ni,169445-nand-gpio";
+ reg = <0x10 0x4>;
+ reg-names = "dat";
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+
+ gpio2: gpio@14 {
+ compatible = "ni,169445-nand-gpio";
+ reg = <0x14 0x4>;
+ reg-names = "dat";
+ gpio-controller;
+ #gpio-cells = <2>;
+ no-output;
+ };
+
+ nand@0 {
+ compatible = "gpio-control-nand";
+ nand-on-flash-bbt;
+ nand-ecc-mode = "soft_bch";
+ nand-ecc-step-size = <512>;
+ nand-ecc-strength = <4>;
+ reg = <0x0 4>;
+ gpios = <&gpio2 0 0>, /* rdy */
+ <&gpio1 1 0>, /* nce */
+ <&gpio1 2 0>, /* ale */
+ <&gpio1 3 0>, /* cle */
+ <&gpio1 4 0>; /* nwp */
+ };
+
+ serial@80000 {
+ compatible = "ns16550a";
+ reg = <0x80000 0x1000>;
+ interrupt-parent = <&cpu_intc>;
+ interrupts = <6>;
+ clocks = <&baseclk>;
+ reg-shift = <0>;
+ };
+
+ ethernet@40000 {
+ compatible = "snps,dwmac-4.10a";
+ interrupt-parent = <&cpu_intc>;
+ interrupts = <5>;
+ interrupt-names = "macirq";
+ reg = <0x40000 0x2000>;
+ clock-names = "stmmaceth", "pclk";
+ clocks = <&baseclk>, <&baseclk>;
+
+ phy-mode = "rgmii";
+
+ fixed-link {
+ speed = <1000>;
+ full-duplex;
+ };
+ };
+ };
+};
diff --git a/arch/mips/boot/dts/ni/Makefile b/arch/mips/boot/dts/ni/Makefile
new file mode 100644
index 0000000..66cfdff
--- /dev/null
+++ b/arch/mips/boot/dts/ni/Makefile
@@ -0,0 +1,7 @@
+dtb-$(CONFIG_FIT_IMAGE_FDT_NI169445) += 169445.dtb
+
+# Force kbuild to make empty built-in.o if necessary
+obj- += dummy.o
+
+always := $(dtb-y)
+clean-files := *.dtb *.dtb.S
diff --git a/arch/mips/configs/generic/board-ni169445.config b/arch/mips/configs/generic/board-ni169445.config
new file mode 100644
index 0000000..0bae1f8
--- /dev/null
+++ b/arch/mips/configs/generic/board-ni169445.config
@@ -0,0 +1,27 @@
+CONFIG_FIT_IMAGE_FDT_NI169445=y
+
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_OF_PLATFORM=y
+
+CONFIG_GPIOLIB=y
+CONFIG_GPIO_SYSFS=y
+CONFIG_GPIO_GENERIC_PLATFORM=y
+
+CONFIG_MTD=y
+CONFIG_MTD_BLOCK=y
+CONFIG_MTD_CMDLINE_PARTS=y
+
+CONFIG_MTD_NAND_ECC=y
+CONFIG_MTD_NAND_ECC_BCH=y
+CONFIG_MTD_NAND=y
+CONFIG_MTD_NAND_GPIO=y
+CONFIG_MTD_NAND_IDS=y
+
+CONFIG_MTD_UBI=y
+CONFIG_MTD_UBI_BLOCK=y
+
+CONFIG_NETDEVICES=y
+CONFIG_STMMAC_ETH=y
+CONFIG_STMMAC_PLATFORM=y
+CONFIG_DWMAC_GENERIC=y
diff --git a/arch/mips/generic/Kconfig b/arch/mips/generic/Kconfig
index a606b3f..fbf0813 100644
--- a/arch/mips/generic/Kconfig
+++ b/arch/mips/generic/Kconfig
@@ -16,4 +16,10 @@ config LEGACY_BOARD_SEAD3
Enable this to include support for booting on MIPS SEAD-3 FPGA-based
development boards, which boot using a legacy boot protocol.

+config FIT_IMAGE_FDT_NI169445
+ bool "Include FDT for NI 169445"
+ help
+ Enable this to include the FDT for the 169445 platform from
+ National Instruments in the FIT kernel image.
+
endif
diff --git a/arch/mips/generic/vmlinux.its.S b/arch/mips/generic/vmlinux.its.S
index f67fbf1..de851f7 100644
--- a/arch/mips/generic/vmlinux.its.S
+++ b/arch/mips/generic/vmlinux.its.S
@@ -29,3 +29,28 @@
};
};
};
+
+#ifdef CONFIG_FIT_IMAGE_FDT_NI169445
+/ {
+ images {
+ fdt@ni169445 {
+ description = "NI 169445 device tree";
+ data = /incbin/("boot/dts/ni/169445.dtb");
+ type = "flat_dt";
+ arch = "mips";
+ compression = "none";
+ hash@0 {
+ algo = "sha1";
+ };
+ };
+ };
+
+ configurations {
+ conf@ni169445 {
+ description = "NI 169445 Linux Kernel";
+ kernel = "kernel@0";
+ fdt = "fdt@ni169445";
+ };
+ };
+};
+#endif
--
2.1.4