linux-kernel - Re: [PATCH v1 8/8] riscv: dts: microchip: add the sundance polarberry

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Date:   Fri, 29 Apr 2022 23:44:42 +0100
From:   Conor Dooley <mail@...chuod.ie>
To:     Conor Dooley <conor.dooley@...rochip.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Palmer Dabbelt <palmer@...belt.com>
Cc:     Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...osinc.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Daire McNamara <daire.mcnamara@...rochip.com>,
        Cyril Jean <Cyril.Jean@...rochip.com>,
        devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH v1 8/8] riscv: dts: microchip: add the sundance polarberry

On 29/04/2022 11:40, Conor Dooley wrote:
> Add a minimal device tree for the PolarFire SoC based Sundance
> PolarBerry.
> 
> Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
> ---
>  arch/riscv/boot/dts/microchip/Makefile        |  1 +
>  .../dts/microchip/mpfs-polarberry-fabric.dtsi | 16 ++++
>  .../boot/dts/microchip/mpfs-polarberry.dts    | 95 +++++++++++++++++++
>  3 files changed, 112 insertions(+)
>  create mode 100644 arch/riscv/boot/dts/microchip/mpfs-polarberry-fabric.dtsi
>  create mode 100644 arch/riscv/boot/dts/microchip/mpfs-polarberry.dts
> 
> diff --git a/arch/riscv/boot/dts/microchip/Makefile b/arch/riscv/boot/dts/microchip/Makefile
> index af3a5059b350..39aae7b04f1c 100644
> --- a/arch/riscv/boot/dts/microchip/Makefile
> +++ b/arch/riscv/boot/dts/microchip/Makefile
> @@ -1,3 +1,4 @@
>  # SPDX-License-Identifier: GPL-2.0
>  dtb-$(CONFIG_SOC_MICROCHIP_POLARFIRE) += mpfs-icicle-kit.dtb
> +dtb-$(CONFIG_SOC_MICROCHIP_POLARFIRE) += mpfs-polarberry.dtb
>  obj-$(CONFIG_BUILTIN_DTB) += $(addsuffix .o, $(dtb-y))
> diff --git a/arch/riscv/boot/dts/microchip/mpfs-polarberry-fabric.dtsi b/arch/riscv/boot/dts/microchip/mpfs-polarberry-fabric.dtsi
> new file mode 100644
> index 000000000000..49380c428ec9
> --- /dev/null
> +++ b/arch/riscv/boot/dts/microchip/mpfs-polarberry-fabric.dtsi
> @@ -0,0 +1,16 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +/* Copyright (c) 2020-2022 Microchip Technology Inc */
> +
> +/ {
> +	fabric_clk3: fabric-clk3 {
> +		compatible = "fixed-clock";
> +		#clock-cells = <0>;
> +		clock-frequency = <62500000>;
> +	};
> +
> +	fabric_clk1: fabric-clk1 {
> +		compatible = "fixed-clock";
> +		#clock-cells = <0>;
> +		clock-frequency = <125000000>;
> +	};
> +};
> diff --git a/arch/riscv/boot/dts/microchip/mpfs-polarberry.dts b/arch/riscv/boot/dts/microchip/mpfs-polarberry.dts
> new file mode 100644
> index 000000000000..8c635f3358a5
> --- /dev/null
> +++ b/arch/riscv/boot/dts/microchip/mpfs-polarberry.dts
> @@ -0,0 +1,95 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +/* Copyright (c) 2020-2022 Microchip Technology Inc */
> +
> +/dts-v1/;
> +
> +#include "mpfs.dtsi"
> +#include "mpfs-polarberry-fabric.dtsi"
> +
> +/* Clock frequency (in Hz) of the rtcclk */
> +#define MTIMER_FREQ    1000000
> +
> +/ {
> +	model = "Sundance PolarBerry";
> +	compatible = "sundance,polarberry", "microchip,mpfs";
> +
> +	aliases {
> +		 serial0 = &mmuart0;
> +		 ethernet0 = &mac0;

Looks like I got this wrong and it should be mac1

> +	};
> +
> +	chosen {
> +		 stdout-path = "serial0:115200n8";
> +	};
> +
> +	cpus {
> +		 timebase-frequency = <MTIMER_FREQ>;
> +	};
> +
> +	ddrc_cache_lo: memory@...00000 {
> +		 device_type = "memory";
> +		 reg = <0x0 0x80000000 0x0 0x2e000000>;
> +		 status = "okay";
> +	};
> +
> +	ddrc_cache_hi: memory@...0000000 {
> +		 device_type = "memory";
> +		 reg = <0x10 0x00000000 0x0 0xC0000000>;
> +		 status = "okay";
> +	};
> +};
> +
> +&refclk {
> +	clock-frequency = <125000000>;
> +};
> +
> +&mmuart0 {
> +	status = "okay";
> +};
> +
> +&mmc {
> +	status = "okay";
> +	bus-width = <4>;
> +	disable-wp;
> +	cap-sd-highspeed;
> +	cap-mmc-highspeed;
> +	card-detect-delay = <200>;
> +	mmc-ddr-1_8v;
> +	mmc-hs200-1_8v;
> +	sd-uhs-sdr12;
> +	sd-uhs-sdr25;
> +	sd-uhs-sdr50;
> +	sd-uhs-sdr104;
> +};
> +
> +&mac1 {
> +	status = "okay";
> +	phy-mode = "sgmii";
> +	phy-handle = <&phy1>;
> +	phy1: ethernet-phy@5 {
> +		 reg = <5>;
> +		 ti,fifo-depth = <0x01>;

Whitespace here needs fixing.

> +	};
> +	phy0: ethernet-phy@4 {
> +		 reg = <4>;
> +		 ti,fifo-depth = <0x01>;
> +	};
> +};
> +
> +&mac0 {
> +	status = "okay";
> +	phy-mode = "sgmii";
> +	phy-handle = <&phy0>;
> +};
> +
> +&rtc {
> +	status = "okay";
> +};
> +
> +&mbox {
> +	status = "okay";
> +};
> +
> +&syscontroller {
> +	status = "okay";
> +};