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 B95C71DAC9F; Tue, 3 Dec 2024 15:50:48 +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=1733241048; cv=none; b=LaZG80PyYuGYYrkF08UQiOLDc0YrvNF5ednsvGvPx43G8/cN5Ygd+ryGWMqVkK9pKmO6JA2DTKjSPVQ8/E2VewfrGSGAZr6L+Oa0Bo9/1d4kHbJvqGnUPWLXoqLdaLto4ls3uymui3xh3oqAWmiubdwqkqfOiaza1F38kJsLHiY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733241048; c=relaxed/simple; bh=n570EuIKkUoOlNy2/evG9Hp7xcrgmKhixIkmq6odSOk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=K0dPuFYGagAViv8XP6CuL/KDab9QjGLDr5zVh1EkoNJdnlJmR/Hdnb8CIIR3YAyff8iuW+1RoiSMQEWRi9WtJmXe8jAS19FytbRW7MRQIAMmA33+b6KxKP6mFBUYd1OiYGBmcjsLIO7ditj4KXTf1r0r/XR56x26qoafaoaAgS8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=DVIq3Jb9; 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="DVIq3Jb9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 46A14C4CECF; Tue, 3 Dec 2024 15:50:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733241048; bh=n570EuIKkUoOlNy2/evG9Hp7xcrgmKhixIkmq6odSOk=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=DVIq3Jb9WNnCnWE+4MjokfsdEdsdVthLx80K0FNxA9Y5NyCIQdrJsKKgqO8/Qb8cB dqxEZ3cjofXHsdxsEWGQQ/wyqom0G2srbFzbNGKKntbDRfIn11xovzS4MEBrVxyRWN KFWXLDvwRwN4dIw2eQ16uVslgLJF+rRKbf9Tqi4se//x9I0JjNZxzGqzfQDZpgSlfW TOBiY06rvErj1N77Dr/RMSj6yq8ZqqQMkDZ4mfiYejedThybvlmIS+VA3a+037XyVm H43pD97ZHm3cZALD+7r6DQfGVXkQ/avEWTKHHbeBF4CnREfvV4xR98meNMzCh7ot0k 6jE1s+gDVz1yQ== Message-ID: <2b6ffc5a-4021-459d-ae4c-b2c472960c60@kernel.org> Date: Tue, 3 Dec 2024 16:50:34 +0100 Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH v1 12/14] riscv: dts: Add Video Output clock and syscon regmap nodes To: Michal Wilczynski , mturquette@baylibre.com, sboyd@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, drew@pdp7.com, guoren@kernel.org, wefu@redhat.com, jassisinghbrar@gmail.com, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, frank.binns@imgtec.com, matt.coster@imgtec.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, ulf.hansson@linaro.org, jszhang@kernel.org, m.szyprowski@samsung.com Cc: linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, dri-devel@lists.freedesktop.org, linux-pm@vger.kernel.org References: <20241203134137.2114847-1-m.wilczynski@samsung.com> <20241203134137.2114847-13-m.wilczynski@samsung.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 03/12/2024 14:41, Michal Wilczynski wrote: > The address space controlling the Video Output (VO) subsystem clocks > also contains control registers for GPU resets. To properly synchronize > access to this shared address space, create a syscon Device Tree node > for the VO registers and reference it in the clock controller node. > > This change ensures coordinated access to the VO registers between the > clock controller and other drivers, preventing conflicts and maintaining > system stability. > > Signed-off-by: Michal Wilczynski > --- > arch/riscv/boot/dts/thead/th1520.dtsi | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git a/arch/riscv/boot/dts/thead/th1520.dtsi b/arch/riscv/boot/dts/thead/th1520.dtsi > index dc2d554b4a71..39d39059160d 100644 > --- a/arch/riscv/boot/dts/thead/th1520.dtsi > +++ b/arch/riscv/boot/dts/thead/th1520.dtsi > @@ -489,6 +489,18 @@ clk: clock-controller@ffef010000 { > #clock-cells = <1>; > }; > > + vosys_clk: clock-controller { Missing address space. You cannot have here nodes without unit address. It does not look like you tested the DTS against bindings. Please run `make dtbs_check W=1` (see Documentation/devicetree/bindings/writing-schema.rst or https://www.linaro.org/blog/tips-and-tricks-for-validating-devicetree-sources-with-the-devicetree-schema/ for instructions). > + compatible = "thead,th1520-clk-vo"; > + thead,vosys-regmap = <&vosys_reg>; > + #clock-cells = <1>; > + }; > + > + vosys_reg: vosys@ffef528000 { 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 = "thead,th1520-vosys", "syscon"; > + reg = <0xff 0xef528000 0x0 0x1000>; > + status = "okay"; Where is it disabled? Drop. Best regards, Krzysztof