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Date: Fri, 9 Dec 2016 15:18:28 -0600
From: Rob Herring <robh@...nel.org>
To: Nathan Sullivan <nathan.sullivan@...com>
Cc: ralf@...ux-mips.org, mark.rutland@....com,
linux-mips@...ux-mips.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] MIPS: NI 169445 board support
On Fri, Dec 02, 2016 at 09:42:09AM -0600, Nathan Sullivan wrote:
> Support the National Instruments 169445 board.
>
> Signed-off-by: Nathan Sullivan <nathan.sullivan@...com>
> ---
> "gpio: mmio: add support for NI 169445 NAND GPIO" and
> "devicetree: add vendor prefix for National Instruments" are required for the
> NAND on this board to work.
These should have been a series, but I already applied the first one.
>
> Documentation/devicetree/bindings/mips/ni.txt | 7 ++
> arch/mips/Kbuild.platforms | 1 +
> arch/mips/Kconfig | 26 ++++++
> arch/mips/boot/dts/Makefile | 1 +
> arch/mips/boot/dts/ni/169445.dts | 99 +++++++++++++++++++++
> arch/mips/boot/dts/ni/Makefile | 9 ++
> arch/mips/configs/ni169445_defconfig | 120 ++++++++++++++++++++++++++
> arch/mips/ni169445/169445-console.c | 38 ++++++++
> arch/mips/ni169445/169445-init.c | 39 +++++++++
> arch/mips/ni169445/169445-int.c | 34 ++++++++
> arch/mips/ni169445/169445-setup.c | 58 +++++++++++++
> arch/mips/ni169445/169445-time.c | 35 ++++++++
> arch/mips/ni169445/Makefile | 9 ++
> arch/mips/ni169445/Platform | 6 ++
> 14 files changed, 482 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/ni169445_defconfig
> create mode 100644 arch/mips/ni169445/169445-console.c
> create mode 100644 arch/mips/ni169445/169445-init.c
> create mode 100644 arch/mips/ni169445/169445-int.c
> create mode 100644 arch/mips/ni169445/169445-setup.c
> create mode 100644 arch/mips/ni169445/169445-time.c
> create mode 100644 arch/mips/ni169445/Makefile
> create mode 100644 arch/mips/ni169445/Platform
>
> 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/arch/mips/Kbuild.platforms b/arch/mips/Kbuild.platforms
> index f5f1bdb..f2d7b5c 100644
> --- a/arch/mips/Kbuild.platforms
> +++ b/arch/mips/Kbuild.platforms
> @@ -20,6 +20,7 @@ platforms += loongson32
> platforms += loongson64
> platforms += mti-malta
> platforms += netlogic
> +platforms += ni169445
> platforms += paravirt
> platforms += pic32
> platforms += pistachio
> diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
> index b3c5bde..d24d11f 100644
> --- a/arch/mips/Kconfig
> +++ b/arch/mips/Kconfig
> @@ -574,6 +574,32 @@ config NXP_STB225
> help
> Support for NXP Semiconductors STB225 Development Board.
>
> +config NI_169445
> + bool "NI 169445 board"
> + select ARCH_WANT_OPTIONAL_GPIOLIB
> + select BOOT_ELF32
> + select BOOT_RAW
> + select BUILTIN_DTB
> + select CEVT_R4K
> + select CSRC_R4K
> + select CPU_MIPSR2_IRQ_VI
> + select CPU_MIPSR2_IRQ_EI
> + select DMA_NONCOHERENT
> + select IRQ_MIPS_CPU
> + select LIBFDT
> + select MIPS_MSC
> + select SYS_HAS_CPU_MIPS32_R1
> + select SYS_HAS_CPU_MIPS32_R2
> + select SYS_HAS_EARLY_PRINTK
> + select SYS_SUPPORTS_32BIT_KERNEL
> + select SYS_SUPPORTS_LITTLE_ENDIAN
> + select USE_OF
> + select COMMON_CLK
> + help
> + This enables support for the National Instruments 169445A
> + board.
> +
> +
> config PMC_MSP
> bool "PMC-Sierra MSP chipsets"
> select CEVT_R4K
> diff --git a/arch/mips/boot/dts/Makefile b/arch/mips/boot/dts/Makefile
> index fc7a0a9..65a0ad8 100644
> --- a/arch/mips/boot/dts/Makefile
> +++ b/arch/mips/boot/dts/Makefile
> @@ -3,6 +3,7 @@ dts-dirs += cavium-octeon
> 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..a2b49f9
> --- /dev/null
> +++ b/arch/mips/boot/dts/ni/169445.dts
> @@ -0,0 +1,99 @@
> +/dts-v1/;
> +
> +/ {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + compatible = "ni,169445";
> +
> + cpus {
> + mips-hpt-frequency = <25000000>;
> +
> + cpu@0 {
> + compatible = "mti,mips14KEc";
> + };
> + };
> +
> + memory {
memory@0
> + device_type = "memory";
> + reg = <0x0 0x08000000>;
> + };
> +
> + clocks {
> + baseclk: baseclock {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <50000000>;
> + };
> + };
> +
> + cpu_intc: cpu_intc {
> + #address-cells = <0>;
> + compatible = "mti,cpu-interrupt-controller";
> + interrupt-controller;
> + #interrupt-cells = <1>;
> + };
> +
> + ahb@0 {
> + compatible = "simple-bus";
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges;
If everything is under 0x1f3xxxxx, then add in the ranges here (and the
unit address).
> +
> + gpio1: nand-gpio-out@...00010 {
As in the binding example: gpio-controller@...
> + compatible = "ni,169445-nand-gpio";
> + reg = <0x1f300010 0x4>;
> + reg-names = "dat";
> + gpio-controller;
> + #gpio-cells = <2>;
> + ngpios = <5>;
> + };
> +
> + gpio2: nand-gpio-in@...00014 {
ditto
> + compatible = "ni,169445-nand-gpio";
> + reg = <0x1f300014 0x4>;
> + reg-names = "dat";
> + gpio-controller;
> + #gpio-cells = <2>;
> + ngpios = <1>;
> + };
> +
> + nand@...00000 {
> + compatible = "gpio-control-nand";
> + nand-on-flash-bbt;
> + nand-ecc-mode = "soft_bch";
> + nand-ecc-step-size = <512>;
> + nand-ecc-strength = <4>;
> + reg = <0x1f300000 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 = <0x1f380000 0x1000>;
> + interrupt-parent = <&cpu_intc>;
> + interrupts = <6>;
> + clocks = <&baseclk>;
> + reg-shift = <0>;
> + };
> +
> + ethernet@...40000 {
> + compatible = "snps,dwc-qos-ethernet-4.10";
> + interrupt-parent = <&cpu_intc>;
> + interrupts = <5>;
> + reg = <0x1f340000 0x2000>;
> + clock-names = "apb_pclk", "phy_ref_clk";
> + clocks = <&baseclk>, <&baseclk>;
> +
> + phy-mode = "rgmii";
> +
> + fixed-link {
> + speed = <1000>;
> + full-duplex;
> + };
> + };
> + };
> +};
[...]
> diff --git a/arch/mips/ni169445/169445-setup.c b/arch/mips/ni169445/169445-setup.c
> new file mode 100644
> index 0000000..80a5c91
> --- /dev/null
> +++ b/arch/mips/ni169445/169445-setup.c
> @@ -0,0 +1,58 @@
> +/* Copyright 2016 National Instruments 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; either version 2 of the License, or (at your option)
> + * any later version.
> + *
> + * This program is distributed in the hope that it will be useful, but WITHOUT
> + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
> + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
> + * more details.
> + */
> +#include <linux/init.h>
> +#include <linux/clk-provider.h>
> +#include <linux/libfdt.h>
> +#include <linux/of_platform.h>
> +#include <linux/of_fdt.h>
> +
> +#include <asm/prom.h>
> +#include <asm/fw/fw.h>
> +
> +#include <asm/mips-boards/generic.h>
> +
> +const char *get_system_type(void)
> +{
> + return "NI 169445 FPGA";
Perhaps this should come from model property. There's a patch in flight
to add a function to get machine name.
> +}
> +
> +void __init plat_mem_setup(void)
> +{
> + /*
> + * Load the builtin devicetree. This causes the chosen node to be
> + * parsed resulting in our memory appearing
> + */
> + __dt_setup_arch(__dtb_start);
> +}
> +
> +void __init device_tree_init(void)
> +{
> + if (!initial_boot_params)
> + return;
> +
> + unflatten_and_copy_device_tree();
> +}
> +
> +static int __init customize_machine(void)
> +{
> + of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
This should happen by default now.
> + return 0;
> +}
> +arch_initcall(customize_machine);
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