From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 82C181DD529; Tue, 26 Nov 2024 19:04:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732647883; cv=none; b=rVZ/PLQPVBjS8penG8Z+ltL0cVzu1D0oDzon3zRplLu+u6gM46sW9uz1sWzMDwyRBXTrUvg8ngEkvZ1PWyh7gE8bwfK5FyDNTh4uJoYeISKQVKc3t8yQmnVIobwT7g3H45KQha9i0KJxx5vE0avxXvHSg8+jWxL/YUJln4MQtlI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732647883; c=relaxed/simple; bh=+mf68xlLx7KgwnDTeOl9Bn2WskxaGDYLqwnAUlB4Isk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Nq8anCSRjNKmRtP0/VN33hfI96uWBLE9bztEN6ygQifWDrJ5Z0HdVf9Ztv5Jv/iCA/YpC7EgQ6z2l6sVTJmTEl2aOoSgq56VTP+XbPAs4ega4IpnUaFHD9f7+y0uKX9oIVu0Vma6xsHFbu7BPKPEcL5YzBQVp25vLxpuAQCuNj8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Z29qgN7Y; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Z29qgN7Y" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4D96EC4CECF; Tue, 26 Nov 2024 19:04:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1732647883; bh=+mf68xlLx7KgwnDTeOl9Bn2WskxaGDYLqwnAUlB4Isk=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=Z29qgN7YEASNNAQS6rQQgujOVDzxLhbry77wGPIiWuUg9+ORkpLxY9ll5hb0v9qrm D5Wd2g7MmYnZ5y8lh8G84DDvQTI/VbQqjS4XgmI4oQY9HQTlLHX7WgRSx8j8dAaijB YdUtlNGtLIdo+8YD1kpZpPunPQ0qGc7h1Vs7BEZEzpNe7L0V8mmXwJSOBWtnMb/cCM b2tDYTEIkJLf9I1HKkaMbbr8CGeRwBT3RoVe2kxa7X7rwRYoZKcJg0nvMBX8B3rlDA VkkyyBEk2RSt2i4MxW5AK44hzNcfUuhKgwlG0rT76uEA3HEMsnH8F28YR0QJQgiPDa JIougiKkPZOGg== Message-ID: <5e2d2174-44a7-4143-8562-4dcdb5ad6c94@kernel.org> Date: Tue, 26 Nov 2024 20:04:36 +0100 Precedence: bulk X-Mailing-List: linux-omap@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] arm64: dts: ti: k3-j721e-beagleboneai64: Enable ACSPCIE output for PCIe1 To: Romain Naour , devicetree@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, conor+dt@kernel.org, krzk+dt@kernel.org, robh@kernel.org, kristo@kernel.org, vigneshr@ti.com, nm@ti.com, Romain Naour References: <20241126173307.4054601-1-romain.naour@smile.fr> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 26/11/2024 18:33, Romain Naour wrote: > From: Romain Naour > > Unlike the SK-TDA4VM (k3-j721e-sk) board, there is no clock generator > (CDCI6214RGET) on the BeagleBone AI-64 (k3-j721e-beagleboneai64) to > provide PCIe refclk signal to PCIe Endponts. So the ACSPCIE module must > provide refclk through PCIe_REFCLK pins. > > Use the new "ti,syscon-acspcie-proxy-ctrl" property to enable ACSPCIE > module's PAD IO Buffers. > > Signed-off-by: Romain Naour > --- > With this patch, we can remove "HACK: Sierra: Drive clock out" patch > applied on vendor kernel for BeagleBone AI-64: > https://openbeagle.org/beagleboard/linux/-/commit/ad65d7ef675966cdbc5d75f2bd545fad1914ba9b > --- > arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts | 4 ++++ > arch/arm64/boot/dts/ti/k3-j721e-main.dtsi | 10 ++++++++-- > 2 files changed, 12 insertions(+), 2 deletions(-) > > diff --git a/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts b/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts > index fb899c99753e..681e3af7ce6e 100644 > --- a/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts > +++ b/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts > @@ -859,6 +859,10 @@ &pcie1_rc { > num-lanes = <2>; > max-link-speed = <3>; > reset-gpios = <&main_gpio0 22 GPIO_ACTIVE_HIGH>; > + /* There is no on-board or external reference clock generators, Please use generic style comments, not netdev. > + * use refclk from the ACSPCIE module's PAD IO Buffers. > + */ > + ti,syscon-acspcie-proxy-ctrl = <&acspcie0_proxy_ctrl 0x3>; > }; > > &ufs_wrapper { > diff --git a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi > index 0da785be80ff..9f47e7672922 100644 > --- a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi > +++ b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi > @@ -5,6 +5,7 @@ > * Copyright (C) 2016-2024 Texas Instruments Incorporated - https://www.ti.com/ > */ > #include > +#include > #include > #include > > @@ -82,6 +83,11 @@ ehrpwm_tbclk: clock-controller@4140 { > reg = <0x4140 0x18>; > #clock-cells = <1>; > }; > + > + acspcie0_proxy_ctrl: acspcie0-ctrl@18090 { Node names should be generic. See also an explanation and list of examples (not exhaustive) in DT specification: https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation > + compatible = "ti,j784s4-acspcie-proxy-ctrl", "syscon"; I am not familiar with naming, so is this j784s4 or j721e or K3 SoC? Compatible should be SoC specific. Best regards, Krzysztof