Re: [PATCH v3 5/5] riscv: dts: add initial board data for the SiFive HiFive Unleashed

[Antony Pavlov]

On Sun,  2 Jun 2019 01:05:00 -0700
Paul Walmsley <paul.walmsley@xxxxxxxxxx> wrote:

Hi!

> Add initial board data for the SiFive HiFive Unleashed A00.
> 
> Currently the data populated in this DT file describes the board
> DRAM configuration and the external clock sources that supply the
> PRCI.
> 
> This third version incorporates changes based on more comments from
> Rob Herring <robh+dt@xxxxxxxxxx>.
> 
> Signed-off-by: Paul Walmsley <paul.walmsley@xxxxxxxxxx>
> Signed-off-by: Paul Walmsley <paul@xxxxxxxxx>
> Cc: Rob Herring <robh+dt@xxxxxxxxxx>
> Cc: Mark Rutland <mark.rutland@xxxxxxx>
> Cc: Palmer Dabbelt <palmer@xxxxxxxxxx>
> Cc: Albert Ou <aou@xxxxxxxxxxxxxxxxx>
> Cc: devicetree@xxxxxxxxxxxxxxx
> Cc: linux-riscv@xxxxxxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> ---
>  arch/riscv/boot/dts/sifive/Makefile           |  2 +
>  .../boot/dts/sifive/hifive-unleashed-a00.dts  | 67 +++++++++++++++++++
>  2 files changed, 69 insertions(+)
>  create mode 100644 arch/riscv/boot/dts/sifive/Makefile
>  create mode 100644 arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts
> 
> diff --git a/arch/riscv/boot/dts/sifive/Makefile b/arch/riscv/boot/dts/sifive/Makefile
> new file mode 100644
> index 000000000000..baaeef9efdcb
> --- /dev/null
> +++ b/arch/riscv/boot/dts/sifive/Makefile
> @@ -0,0 +1,2 @@
> +# SPDX-License-Identifier: GPL-2.0
> +dtb-y += hifive-unleashed-a00.dtb
> diff --git a/arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts b/arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts
> new file mode 100644
> index 000000000000..1de4ea1577d5
> --- /dev/null
> +++ b/arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts
> @@ -0,0 +1,67 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +/* Copyright (c) 2018-2019 SiFive, Inc */
> +
> +/dts-v1/;
> +
> +#include "fu540-c000.dtsi"

You already have "/dts-v1/;" in the fu540-c000.dtsi file.

You can omit it in the hifive-unleashed-a00.dts file.

> +/* Clock frequency (in Hz) of the PCB crystal for rtcclk */
> +#define RTCCLK_FREQ		1000000
> +
> +/ {
> +	#address-cells = <2>;
> +	#size-cells = <2>;
> +	model = "SiFive HiFive Unleashed A00";
> +	compatible = "sifive,hifive-unleashed-a00", "sifive,fu540-c000";
> +
> +	chosen {
> +	};
> +
> +	cpus {
> +		timebase-frequency = <RTCCLK_FREQ>;
> +	};
> +
> +	memory@80000000 {
> +		device_type = "memory";
> +		reg = <0x0 0x80000000 0x2 0x00000000>;
> +	};
> +
> +	soc {
> +	};
> +
> +	hfclk: hfclk {
> +		#clock-cells = <0>;
> +		compatible = "fixed-clock";
> +		clock-frequency = <33333333>;
> +		clock-output-names = "hfclk";
> +	};
> +
> +	rtcclk: rtcclk {
> +		#clock-cells = <0>;
> +		compatible = "fixed-clock";
> +		clock-frequency = <RTCCLK_FREQ>;
> +		clock-output-names = "rtcclk";
> +	};
> +};
> +
> +&qspi0 {
> +	flash@0 {
> +		compatible = "issi,is25wp256", "jedec,spi-nor";
> +		reg = <0>;
> +		spi-max-frequency = <50000000>;
> +		m25p,fast-read;
> +		spi-tx-bus-width = <4>;
> +		spi-rx-bus-width = <4>;
> +	};
> +};
> +
> +&qspi2 {
> +	status = "okay";
> +	mmc@0 {
> +		compatible = "mmc-spi-slot";
> +		reg = <0>;
> +		spi-max-frequency = <20000000>;
> +		voltage-ranges = <3300 3300>;
> +		disable-wp;
> +	};
> +};
> -- 
> 2.20.1
> 
> 
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-- 
Best regards,
  Antony Pavlov