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Date:	Sun, 15 Dec 2013 14:27:49 +1000
From:	Peter Crosthwaite <peter.crosthwaite@...inx.com>
To:	Jonas Jensen <jonas.jensen@...il.com>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	devicetree-discuss@...ts.ozlabs.org, arm@...nel.org,
	linux@....linux.org.uk, Arnd Bergmann <arnd@...db.de>,
	olof@...om.net
Subject: Re: [PATCH v4 2/2] ARM: mach-moxart: add MOXA ART SoC device tree files

On Sat, Dec 14, 2013 at 12:33 AM, Jonas Jensen <jonas.jensen@...il.com> wrote:
> Add a generic (dtsi) include file for MOXA ART SoCs.
>
> Also add a file for UC-7112-LX.
>
> Signed-off-by: Jonas Jensen <jonas.jensen@...il.com>
> ---
>  Documentation/devicetree/bindings/arm/moxart.txt |  12 +++
>  arch/arm/boot/dts/Makefile                       |   1 +
>  arch/arm/boot/dts/moxart-uc7112lx.dts            | 131 +++++++++++++++++++++++
>  arch/arm/boot/dts/moxart.dtsi                    | 100 +++++++++++++++++
>  4 files changed, 244 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/arm/moxart.txt
>  create mode 100644 arch/arm/boot/dts/moxart-uc7112lx.dts
>  create mode 100644 arch/arm/boot/dts/moxart.dtsi
>
> diff --git a/Documentation/devicetree/bindings/arm/moxart.txt b/Documentation/devicetree/bindings/arm/moxart.txt
> new file mode 100644
> index 0000000..11087ed
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/moxart.txt
> @@ -0,0 +1,12 @@
> +MOXA ART device tree bindings
> +
> +Boards with the MOXA ART SoC shall have the following properties:
> +
> +Required root node property:
> +
> +compatible = "moxa,moxart";
> +
> +Boards:
> +
> +- UC-7112-LX: embedded computer
> +  compatible = "moxa,moxart-uc-7112-lx", "moxa,moxart"
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 9fe33e7..f331b22 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -318,6 +318,7 @@ dtb-$(CONFIG_ARCH_VT8500) += vt8500-bv07.dtb \
>  dtb-$(CONFIG_ARCH_ZYNQ) += zynq-zc702.dtb \
>         zynq-zc706.dtb \
>         zynq-zed.dtb
> +dtb-$(CONFIG_ARCH_MOXART) += moxart-uc7112lx.dtb
>
>  targets += dtbs
>  targets += $(dtb-y)
> diff --git a/arch/arm/boot/dts/moxart-uc7112lx.dts b/arch/arm/boot/dts/moxart-uc7112lx.dts
> new file mode 100644
> index 0000000..c63d013
> --- /dev/null
> +++ b/arch/arm/boot/dts/moxart-uc7112lx.dts
> @@ -0,0 +1,131 @@
> +/* moxart-uc7112lx.dts - Device Tree file for MOXA UC-7112-LX
> + *
> + * Copyright (C) 2013 Jonas Jensen <jonas.jensen@...il.com>
> + *
> + * Licensed under GPLv2 or later.
> + */
> +
> +/dts-v1/;
> +/include/ "moxart.dtsi"
> +
> +/ {
> +       model = "MOXA UC-7112-LX";
> +       compatible = "moxa,moxart-uc-7112-lx", "moxa,moxart";
> +
> +       memory {
> +               device_type = "memory";
> +               reg = <0x0 0x2000000>;
> +       };
> +
> +       flash@...00000,0 {
> +               compatible = "numonyx,js28f128", "cfi-flash";
> +               reg = <0x80000000 0x1000000>;
> +               bank-width = <2>;
> +               #address-cells = <1>;
> +               #size-cells = <1>;
> +               partition@0 {
> +                       label = "bootloader";
> +                       reg = <0x0 0x40000>;
> +               };
> +               partition@...00 {
> +                       label = "linux kernel";
> +                       reg = <0x40000 0x1C0000>;
> +               };
> +               partition@...000 {
> +                       label = "root filesystem";
> +                       reg = <0x200000 0x800000>;
> +               };
> +               partition@...000 {
> +                       label = "user filesystem";
> +                       reg = <0xa00000 0x600000>;
> +               };
> +       };
> +
> +       sdhci: sdhci@...00000 {
> +               compatible = "moxa,moxart-sdhci";
> +               reg = <0x98e00000 0x5C>;
> +               interrupts = <5 0>;
> +               clocks = <&clk_apb>;
> +               dmas =  <&dma 5>,
> +                       <&dma 5>;
> +               dma-names = "tx", "rx";
> +       };

Is your SDHCI really implemented on the board level? The fact that its
reg property is within the same as the SoC range (for your dtsi)
suggests the SDHCI is part of the SoC and should perhaps be in the
dtsi?

> +
> +       mdio0: mdio@...00090 {
> +               compatible = "moxa,moxart-mdio";
> +               reg = <0x90900090 0x8>;
> +               #address-cells = <1>;
> +               #size-cells = <0>;
> +
> +               ethphy0: ethernet-phy@1 {
> +                       device_type = "ethernet-phy";
> +                       compatible = "moxa,moxart-rtl8201cp", "ethernet-phy-ieee802.3-c22";
> +                       reg = <1>;
> +               };
> +       };
> +
> +       mdio1: mdio@...00090 {
> +               compatible = "moxa,moxart-mdio";
> +               reg = <0x92000090 0x8>;
> +               #address-cells = <1>;
> +               #size-cells = <0>;
> +
> +               ethphy1: ethernet-phy@1 {
> +                       device_type = "ethernet-phy";
> +                       compatible = "moxa,moxart-rtl8201cp", "ethernet-phy-ieee802.3-c22";
> +                       reg = <1>;
> +               };
> +       };
> +
> +       mac0: mac@...00000 {
> +               compatible = "moxa,moxart-mac";
> +               reg = <0x90900000 0x90>;
> +               interrupts = <25 0>;
> +               phy-handle = <&ethphy0>;
> +               phy-mode = "mii";
> +       };
> +
> +       mac1: mac@...00000 {
> +               compatible = "moxa,moxart-mac";
> +               reg = <0x92000000 0x90>;
> +               interrupts = <27 0>;
> +               phy-handle = <&ethphy1>;
> +               phy-mode = "mii";
> +       };

Same for MACs.

> +
> +       uart0: uart@...00000 {
> +               compatible = "ns16550a";
> +               reg = <0x98200000 0x20>;
> +               interrupts = <31 8>;
> +               reg-shift = <2>;
> +               reg-io-width = <4>;
> +               clock-frequency = <14745600>;
> +               status = "okay";
> +       };
> +

And UARTs.

Let me know if i'm misunderstanding dts/dtsi split but looking at some
of the other SoCs this seems inconsistent to me.

Regards,
Peter

> +       leds {
> +               compatible = "gpio-leds";
> +               user-led {
> +                       label = "ready-led";
> +                       gpios = <&gpio 27 0x1>;
> +                       default-state = "on";
> +                       linux,default-trigger = "default-on";
> +               };
> +       };
> +
> +       gpio_keys_polled {
> +               compatible = "gpio-keys-polled";
> +               #address-cells = <1>;
> +               #size-cells = <0>;
> +               poll-interval = <500>;
> +               button@25 {
> +                       label = "GPIO Reset";
> +                       linux,code = <116>;
> +                       gpios = <&gpio 25 1>;
> +               };
> +       };
> +
> +       chosen {
> +               bootargs = "console=ttyS0,115200n8 earlyprintk root=/dev/mmcblk0p1 rw rootwait";
> +       };
> +};
> diff --git a/arch/arm/boot/dts/moxart.dtsi b/arch/arm/boot/dts/moxart.dtsi
> new file mode 100644
> index 0000000..0ea51ed
> --- /dev/null
> +++ b/arch/arm/boot/dts/moxart.dtsi
> @@ -0,0 +1,100 @@
> +/* moxart.dtsi - Device Tree Include file for MOXA ART family SoC
> + *
> + * Copyright (C) 2013 Jonas Jensen <jonas.jensen@...il.com>
> + *
> + * Licensed under GPLv2 or later.
> + */
> +
> +/include/ "skeleton.dtsi"
> +
> +/ {
> +       compatible = "moxa,moxart";
> +       model = "MOXART";
> +       interrupt-parent = <&intc>;
> +
> +       cpus {
> +               #address-cells = <1>;
> +               #size-cells = <0>;
> +
> +               cpu@0 {
> +                       device_type = "cpu";
> +                       compatible = "faraday,fa526";
> +                       reg = <0>;
> +               };
> +       };
> +
> +       clocks {
> +               #address-cells = <1>;
> +               #size-cells = <0>;
> +
> +               ref12: ref12M {
> +                       compatible = "fixed-clock";
> +                       #clock-cells = <0>;
> +                       clock-frequency = <12000000>;
> +               };
> +       };
> +
> +       soc {
> +               compatible = "simple-bus";
> +               #address-cells = <1>;
> +               #size-cells = <1>;
> +               reg = <0x90000000 0x10000000>;
> +               ranges;
> +
> +               intc: interrupt-controller@...00000 {
> +                       compatible = "moxa,moxart-ic";
> +                       reg = <0x98800000 0x38>;
> +                       interrupt-controller;
> +                       #interrupt-cells = <2>;
> +                       interrupt-mask = <0x00080000>;
> +               };
> +
> +               clk_pll: clk_pll@...00000 {
> +                       compatible = "moxa,moxart-pll-clock";
> +                       #clock-cells = <0>;
> +                       reg = <0x98100000 0x34>;
> +                       clocks = <&ref12>;
> +               };
> +
> +               clk_apb: clk_apb@...00000 {
> +                       compatible = "moxa,moxart-apb-clock";
> +                       #clock-cells = <0>;
> +                       reg = <0x98100000 0x34>;
> +                       clocks = <&clk_pll>;
> +               };
> +
> +               timer: timer@...00000 {
> +                       compatible = "moxa,moxart-timer";
> +                       reg = <0x98400000 0x42>;
> +                       interrupts = <19 1>;
> +                       clocks = <&clk_apb>;
> +               };
> +
> +               gpio: gpio@...00000 {
> +                       gpio-controller;
> +                       #gpio-cells = <2>;
> +                       compatible = "moxa,moxart-gpio";
> +                       reg = <0x98700000 0xC>;
> +               };
> +
> +               rtc: rtc {
> +                       compatible = "moxa,moxart-rtc";
> +                       gpio-rtc-sclk = <&gpio 5 0>;
> +                       gpio-rtc-data = <&gpio 6 0>;
> +                       gpio-rtc-reset = <&gpio 7 0>;
> +               };
> +
> +               dma: dma@...00000 {
> +                       compatible = "moxa,moxart-dma";
> +                       reg = <0x90500080 0x40>;
> +                       interrupts = <24 0>;
> +                       #dma-cells = <1>;
> +               };
> +
> +               watchdog: watchdog@...00000 {
> +                       compatible = "moxa,moxart-watchdog";
> +                       reg = <0x98500000 0x10>;
> +                       clocks = <&clk_apb>;
> +               };
> +       };
> +};
> --
> 1.8.2.1
>
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