linux-kernel - Re: [PATCH v3 1/5] arm64: dts: ti: k3-am64-main: Add SERDES DT node

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Message-ID: <20210526184427.wvn4kveus6vgedcs@polio>
Date:   Wed, 26 May 2021 13:44:27 -0500
From:   Nishanth Menon <nm@...com>
To:     Kishon Vijay Abraham I <kishon@...com>
CC:     Tero Kristo <kristo@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Lokesh Vutla <lokeshvutla@...com>
Subject: Re: [PATCH v3 1/5] arm64: dts: ti: k3-am64-main: Add SERDES DT node

On 19:59-20210526, Kishon Vijay Abraham I wrote:
> AM64 has one SERDES 10G instance. Add SERDES DT node for it.
> 
> Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
> ---
>  arch/arm64/boot/dts/ti/k3-am64-main.dtsi | 56 ++++++++++++++++++++++++
>  1 file changed, 56 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
> index b2bcbf23eefd..a67f10406a8e 100644
> --- a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
> @@ -5,6 +5,17 @@
>   * Copyright (C) 2020-2021 Texas Instruments Incorporated - https://www.ti.com/
>   */
>  
> +#include <dt-bindings/phy/phy-cadence.h>
> +#include <dt-bindings/phy/phy-ti.h>
> +
> +/ {
> +	serdes_refclk: clock {
> +		#clock-cells = <0>;
> +		compatible = "fixed-clock";
> +		clock-frequency = <0>;
> +	};
> +};
> +
>  &cbass_main {
>  	oc_sram: sram@...00000 {
>  		compatible = "mmio-sram";
> @@ -18,6 +29,20 @@
>  		};
>  	};
>  
> +	main_conf: syscon@...00000 {
> +		compatible = "ti,j721e-system-controller", "syscon", "simple-mfd";
> +		reg = <0x0 0x43000000 0x0 0x20000>;
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		ranges = <0x0 0x0 0x43000000 0x20000>;
> +
> +		serdes_ln_ctrl: mux-controller {
> +			compatible = "mmio-mux";

Any idea where the mmio-mux binding is and status?
I'd rather not pick up a new warning against linux-next

> +			#mux-control-cells = <1>;
> +			mux-reg-masks = <0x4080 0x3>; /* SERDES0 lane0 select */
> +		};
> +	};
> +
>  	gic500: interrupt-controller@...0000 {
>  		compatible = "arm,gic-v3";
>  		#address-cells = <2>;
> @@ -672,4 +697,35 @@
>  		ti,mbox-num-users = <4>;
>  		ti,mbox-num-fifos = <16>;
>  	};
> +
> +	serdes_wiz0: wiz@...0000 {
> +		compatible = "ti,am64-wiz-10g";
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		power-domains = <&k3_pds 162 TI_SCI_PD_EXCLUSIVE>;
> +		clocks = <&k3_clks 162 0>, <&k3_clks 162 1>, <&serdes_refclk>;
> +		clock-names = "fck", "core_ref_clk", "ext_ref_clk";
> +		num-lanes = <1>;
> +		#reset-cells = <1>;
> +		#clock-cells = <1>;
> +		ranges = <0x0f000000 0x0 0x0f000000 0x00010000>;
> +
> +		assigned-clocks = <&k3_clks 162 1>;
> +		assigned-clock-parents = <&k3_clks 162 5>;
> +
> +		serdes0: serdes@...0000 {
> +			compatible = "ti,j721e-serdes-10g";
> +			reg = <0x0f000000 0x00010000>;
> +			reg-names = "torrent_phy";
> +			resets = <&serdes_wiz0 0>;
> +			reset-names = "torrent_reset";
> +			clocks = <&serdes_wiz0 TI_WIZ_PLL0_REFCLK>, <&serdes_wiz0 TI_WIZ_PHY_EN_REFCLK>;
> +			clock-names = "refclk", "phy_en_refclk";
> +			assigned-clocks = <&serdes_wiz0 TI_WIZ_PLL0_REFCLK>, <&serdes_wiz0 TI_WIZ_PLL1_REFCLK>, <&serdes_wiz0 TI_WIZ_REFCLK_DIG>;
> +			assigned-clock-parents = <&k3_clks 162 1>, <&k3_clks 162 1>, <&k3_clks 162 1>;

Could we line these up to < 100 chars?

> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			#clock-cells = <1>;
> +		};
> +	};
>  };
> -- 
> 2.17.1
> 

-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D