linux-kernel - Re: [PATCH 7/7] riscv: dts: add initial board data for the SiFive HiFive Unleashed

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Date:   Sat, 6 Apr 2019 16:14:32 -0700 (PDT)
From:   Paul Walmsley <paul.walmsley@...ive.com>
To:     Rob Herring <robh@...nel.org>
cc:     Paul Walmsley <paul.walmsley@...ive.com>,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        Mark Rutland <mark.rutland@....com>,
        Palmer Dabbelt <palmer@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>, devicetree@...r.kernel.org,
        Paul Walmsley <paul@...an.com>
Subject: Re: [PATCH 7/7] riscv: dts: add initial board data for the SiFive
 HiFive Unleashed

On Thu, 20 Dec 2018, Rob Herring wrote:

> On Fri, Dec 14, 2018 at 09:21:54PM -0800, Paul Walmsley wrote:
> > 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.

...

> > diff --git a/arch/riscv/boot/dts/sifive/hifive-unleashed-a00-fu540.dts b/arch/riscv/boot/dts/sifive/hifive-unleashed-a00-fu540.dts
> > new file mode 100644
> > index 000000000000..0c6afabe69e3
> > --- /dev/null
> > +++ b/arch/riscv/boot/dts/sifive/hifive-unleashed-a00-fu540.dts
> > @@ -0,0 +1,39 @@
> > +// SPDX-License-Identifier: Apache-2.0
> > +// SPDX-License-Identifier: GPL-2.0-or-later
> 
> This should be a single line with: (Apache-2.0 OR GPL-2.0+)

Done.

> > +	model = "SiFive HiFive Unleashed A00 (FU540-C000)"
> > +	compatible = "sifive,hifive-unleashed-a00-fu540",
> > +		"sifive,hifive-unleashed-fu540";
> 
> SoC compatible should be here too.

Done.

> > +	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 = <1000000>;
> > +			clock-output-names = "rtcclk";
> > +		};
> 
> Are these the clock inputs to the SoC or dummy clocks until you write a 
> proper clock driver? If the former, they should be at the top level. 

Done.


Thanks for your comments; Will send an updated patch set.


- Paul