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

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Message-Id: <20190609091819.2d1a97c90c0b44aa9120d373@gmail.com>
Date:   Sun, 9 Jun 2019 09:18:19 +0300
From:   Antony Pavlov <antonynpavlov@...il.com>
To:     Paul Walmsley <paul.walmsley@...ive.com>
Cc:     linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        Mark Rutland <mark.rutland@....com>,
        devicetree@...r.kernel.org, Paul Walmsley <paul@...an.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Palmer Dabbelt <palmer@...ive.com>,
        Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCH v3 5/5] riscv: dts: add initial board data for the
 SiFive HiFive Unleashed

On Sun,  2 Jun 2019 01:05:00 -0700
Paul Walmsley <paul.walmsley@...ive.com> 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@...nel.org>.
> 
> Signed-off-by: Paul Walmsley <paul.walmsley@...ive.com>
> Signed-off-by: Paul Walmsley <paul@...an.com>
> Cc: Rob Herring <robh+dt@...nel.org>
> Cc: Mark Rutland <mark.rutland@....com>
> Cc: Palmer Dabbelt <palmer@...ive.com>
> Cc: Albert Ou <aou@...s.berkeley.edu>
> Cc: devicetree@...r.kernel.org
> Cc: linux-riscv@...ts.infradead.org
> Cc: linux-kernel@...r.kernel.org
> ---
>  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@...00000 {
> +		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
> 
> 
> _______________________________________________
> linux-riscv mailing list
> linux-riscv@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-riscv

-- 
Best regards,
  Antony Pavlov

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