linux-kernel - RE: [PATCH 7/7] riscv: dts: starfive: Add initial StarFive JH8100 device tree

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Message-ID: <09c51c5301c54659828c5cce748d3762@EXMBX066.cuchost.com>
Date:   Tue, 28 Nov 2023 03:23:29 +0000
From:   JeeHeng Sia <jeeheng.sia@...rfivetech.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>,
        "paul.walmsley@...ive.com" <paul.walmsley@...ive.com>,
        "palmer@...belt.com" <palmer@...belt.com>,
        "aou@...s.berkeley.edu" <aou@...s.berkeley.edu>,
        "conor@...nel.org" <conor@...nel.org>,
        "kernel@...il.dk" <kernel@...il.dk>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "emil.renner.berthing@...onical.com" 
        <emil.renner.berthing@...onical.com>
CC:     "linux-riscv@...ts.infradead.org" <linux-riscv@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Leyfoon Tan <leyfoon.tan@...rfivetech.com>
Subject: RE: [PATCH 7/7] riscv: dts: starfive: Add initial StarFive JH8100
 device tree



> -----Original Message-----
> From: Krzysztof Kozlowski <krzk@...nel.org>
> Sent: Monday, November 27, 2023 4:51 PM
> To: JeeHeng Sia <jeeheng.sia@...rfivetech.com>; paul.walmsley@...ive.com; palmer@...belt.com; aou@...s.berkeley.edu;
> conor@...nel.org; kernel@...il.dk; robh+dt@...nel.org; emil.renner.berthing@...onical.com
> Cc: linux-riscv@...ts.infradead.org; linux-kernel@...r.kernel.org; Leyfoon Tan <leyfoon.tan@...rfivetech.com>
> Subject: Re: [PATCH 7/7] riscv: dts: starfive: Add initial StarFive JH8100 device tree
> 
> On 27/11/2023 02:36, Sia Jee Heng wrote:
> > Add initial device tree for the StarFive JH8100 RISC-V SoC
> >
> > Signed-off-by: Sia Jee Heng <jeeheng.sia@...rfivetech.com>
> > Reviewed-by: Ley Foon Tan <leyfoon.tan@...rfivetech.com>
> > ---
> >  arch/riscv/boot/dts/starfive/Makefile       |   1 +
> >  arch/riscv/boot/dts/starfive/jh8100-evb.dts |  42 +++
> >  arch/riscv/boot/dts/starfive/jh8100.dtsi    | 365 ++++++++++++++++++++
> >  3 files changed, 408 insertions(+)
> >  create mode 100644 arch/riscv/boot/dts/starfive/jh8100-evb.dts
> >  create mode 100644 arch/riscv/boot/dts/starfive/jh8100.dtsi
> >
> > diff --git a/arch/riscv/boot/dts/starfive/Makefile b/arch/riscv/boot/dts/starfive/Makefile
> > index 0141504c0f5c..fbb0dc619102 100644
> > --- a/arch/riscv/boot/dts/starfive/Makefile
> > +++ b/arch/riscv/boot/dts/starfive/Makefile
> > @@ -10,3 +10,4 @@ dtb-$(CONFIG_ARCH_STARFIVE) += jh7100-starfive-visionfive-v1.dtb
> >
> >  dtb-$(CONFIG_ARCH_STARFIVE) += jh7110-starfive-visionfive-2-v1.2a.dtb
> >  dtb-$(CONFIG_ARCH_STARFIVE) += jh7110-starfive-visionfive-2-v1.3b.dtb
> > +dtb-$(CONFIG_ARCH_STARFIVE) += jh8100-evb.dtb
> > diff --git a/arch/riscv/boot/dts/starfive/jh8100-evb.dts b/arch/riscv/boot/dts/starfive/jh8100-evb.dts
> > new file mode 100644
> > index 000000000000..67c4964a8773
> > --- /dev/null
> > +++ b/arch/riscv/boot/dts/starfive/jh8100-evb.dts
> > @@ -0,0 +1,42 @@
> > +// SPDX-License-Identifier: GPL-2.0 OR MIT
> > +/*
> > + * Copyright (c) 2021-2023 StarFive Technology Co., Ltd.
> > + */
> > +
> > +#include "jh8100.dtsi"
> > +
> > +/ {
> > +	model = "StarFive JH8100 EVB";
> > +	compatible = "starfive,jh8100-evb", "starfive,jh8100";
> > +
> > +	aliases {
> > +		serial0 = &uart0;
> > +	};
> > +
> > +	chosen {
> > +		stdout-path = "serial0:115200n8";
> > +	};
> > +
> > +	cpus {
> > +		timebase-frequency = <4000000>;
> 
> This was fixed recently on the mailing lists.
The timebase-frequency on StarFive JH8100 SoC is set by an internal clk divider, will move the property to jh8100.dtsi. Thanks.
> 
> 
> > +
> > +	};
> > +
> > +	memory {
> > +		device_type = "memory";
> > +		reg = <0x0 0x40000000 0x2 0x00000000>; /* 8GB */
> > +	};
> > +
> > +	soc {
> > +		clk_uart: clk_uart {
> 
> Undercores are not allowed in node names. Use hyphen.
Noted.
> 
> Also, boards must not add nodes to the soc. This is board, not SoC DTS.
Noted. Will move it to dtsi.
> 
> ...
> 
> > +
> > +		uart6: serial@...e0000  {
> > +			compatible = "starfive,jh8100-uart";
> > +			reg = <0x0 0x127e0000 0x0 0x10000>;
> > +			clock-names = "uart_clk", "pclk";
> > +			interrupts = <73>;
> > +			status = "disabled";
> > +		};
> > +
> 
> Stray blank line. In other places as well.
Noted.
> 
> > +	};
> > +};
> 
> Best regards,
> Krzysztof