linux-kernel - Re: [PATCH v5 1/4] riscv: dts: starfive: jh7100: Add sysmain and gmac DT nodes

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Message-ID: <CAJM55Z9DhojDTDPEqx3NO5g61=ezRg-U9odixbZugcXRRVmS7w@mail.gmail.com>
Date: Wed, 20 Dec 2023 05:43:52 -0800
From: Emil Renner Berthing <emil.renner.berthing@...onical.com>
To: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>, 
	Emil Renner Berthing <kernel@...il.dk>, Conor Dooley <conor@...nel.org>, Rob Herring <robh+dt@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
	Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>, 
	Albert Ou <aou@...s.berkeley.edu>, Richard Cochran <richardcochran@...il.com>, 
	Andrew Lunn <andrew@...n.ch>, Jacob Keller <jacob.e.keller@...el.com>
Cc: linux-riscv@...ts.infradead.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org, kernel@...labora.com, 
	Emil Renner Berthing <emil.renner.berthing@...onical.com>
Subject: Re: [PATCH v5 1/4] riscv: dts: starfive: jh7100: Add sysmain and gmac
 DT nodes

Cristian Ciocaltea wrote:
> Provide the sysmain and gmac DT nodes supporting the DWMAC found on the
> StarFive JH7100 SoC.
>
> Co-developed-by: Emil Renner Berthing <emil.renner.berthing@...onical.com>
> Signed-off-by: Emil Renner Berthing <emil.renner.berthing@...onical.com>
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
> Reviewed-by: Jacob Keller <jacob.e.keller@...el.com>
> ---
>  arch/riscv/boot/dts/starfive/jh7100.dtsi | 36 ++++++++++++++++++++++++
>  1 file changed, 36 insertions(+)
>
> diff --git a/arch/riscv/boot/dts/starfive/jh7100.dtsi b/arch/riscv/boot/dts/starfive/jh7100.dtsi
> index c216aaecac53..2ebdebe6a81c 100644
> --- a/arch/riscv/boot/dts/starfive/jh7100.dtsi
> +++ b/arch/riscv/boot/dts/starfive/jh7100.dtsi
> @@ -204,6 +204,37 @@ sdio1: mmc@...10000 {
>  			status = "disabled";
>  		};
>
> +		gmac: ethernet@...20000 {
> +			compatible = "starfive,jh7100-dwmac", "snps,dwmac";
> +			reg = <0x0 0x10020000 0x0 0x10000>;
> +			clocks = <&clkgen JH7100_CLK_GMAC_ROOT_DIV>,
> +				 <&clkgen JH7100_CLK_GMAC_AHB>,
> +				 <&clkgen JH7100_CLK_GMAC_PTP_REF>,
> +				 <&clkgen JH7100_CLK_GMAC_TX_INV>,
> +				 <&clkgen JH7100_CLK_GMAC_GTX>;
> +			clock-names = "stmmaceth", "pclk", "ptp_ref", "tx", "gtx";
> +			resets = <&rstgen JH7100_RSTN_GMAC_AHB>;
> +			reset-names = "ahb";
> +			interrupts = <6>, <7>;
> +			interrupt-names = "macirq", "eth_wake_irq";
> +			max-frame-size = <9000>;
> +			snps,multicast-filter-bins = <32>;
> +			snps,perfect-filter-entries = <128>;
> +			starfive,syscon = <&sysmain 0x70 0>;
> +			rx-fifo-depth = <32768>;
> +			tx-fifo-depth = <16384>;
> +			snps,axi-config = <&stmmac_axi_setup>;
> +			snps,fixed-burst;
> +			snps,force_thresh_dma_mode;

Compared to v4 you're missing a

  snps,no-pbl-x8;

here. It might be the right thing to do, but then I would have expected
it to me mentioned in the cover letter version history.

> +			status = "disabled";
> +
> +			stmmac_axi_setup: stmmac-axi-config {
> +				snps,wr_osr_lmt = <16>;
> +				snps,rd_osr_lmt = <16>;
> +				snps,blen = <256 128 64 32 0 0 0>;
> +			};
> +		};
> +
>  		clkgen: clock-controller@...00000 {
>  			compatible = "starfive,jh7100-clkgen";
>  			reg = <0x0 0x11800000 0x0 0x10000>;
> @@ -218,6 +249,11 @@ rstgen: reset-controller@...40000 {
>  			#reset-cells = <1>;
>  		};
>
> +		sysmain: syscon@...50000 {
> +			compatible = "starfive,jh7100-sysmain", "syscon";
> +			reg = <0x0 0x11850000 0x0 0x10000>;
> +		};
> +
>  		i2c0: i2c@...b0000 {
>  			compatible = "snps,designware-i2c";
>  			reg = <0x0 0x118b0000 0x0 0x10000>;
> --
> 2.43.0
>