linux-kernel - Re: [PATCH 2/3] arm64: dts: ti: k3-j784s4-j742s2-evm: Add overlay for PCIe NTB

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Message-ID: <d6440feb-ea23-49f8-9886-82d0e2145f12@ti.com>
Date: Mon, 24 Feb 2025 17:35:47 +0530
From: Vignesh Raghavendra <vigneshr@...com>
To: Siddharth Vadapalli <s-vadapalli@...com>, <nm@...com>, <kristo@...nel.org>,
        <robh@...nel.org>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>
CC: <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <srk@...com>
Subject: Re: [PATCH 2/3] arm64: dts: ti: k3-j784s4-j742s2-evm: Add overlay for
 PCIe NTB



On 02/02/25 15:06, Siddharth Vadapalli wrote:
> diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-evm-pcie-ntb.dtso b/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-evm-pcie-ntb.dtso
> new file mode 100644
> index 000000000000..e44173f670fa
> --- /dev/null
> +++ b/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-evm-pcie-ntb.dtso
> @@ -0,0 +1,92 @@
> +// SPDX-License-Identifier: GPL-2.0-only OR MIT
> +/**
> + * DT Overlay for enabling NTB functionality using PCIE0 and PCIE1 instances of
> + * PCIe on the J784S4 EVM and the J742S2 EVM.
> + *
> + * J784S4 EVM Product Link: https://www.ti.com/tool/J784S4XEVM
> + * J742S2 EVM Product Link: https://www.ti.com/tool/J742S2XH01EVM
> + *
> + * Copyright (C) 2025 Texas Instruments Incorporated - https://www.ti.com/
> + */
> +
> +/dts-v1/;
> +/plugin/;
> +
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include <dt-bindings/soc/ti,sci_pm_domain.h>
> +
> +#include "k3-pinctrl.h"
> +
> +&{/} {
> +	epf_bus {


no underscore in node name please

> +		compatible = "pci-epf-bus";
> +
> +		ntb {
> +			compatible = "pci-epf-ntb";
> +			epcs = <&pcie0_ep>, <&pcie1_ep>;
> +			epc-names = "primary", "secondary";
> +			vendor-id = /bits/ 16 <0x104c>;
> +			device-id = /bits/ 16 <0xb012>;
> +			num-mws = <4>;
> +			mws-size = <0x100000>, <0x100000>, <0x100000>, <0x100000>;
> +		};
> +	};
> +};
> +

-- 
Regards
Vignesh
https://ti.com/opensource