From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 2EE453ACEE0; Wed, 29 Jul 2026 09:17:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785316631; cv=none; b=gAuHnXZtQDiJjtWq80/pHbYPRuNoJ7Xt9G9uKpB6dBdxg8+Yu/KpZ9Z6ZiJRVAMMP9YIqCgo0ghDtN4KN8nmK5e//PD9dV7o8tOyt6JRWBYY9DKSHMgS0DhT1+6jMczPLx2mNQyuuxY3NN0YoKPtE8HK2y7clbISXDsHO+vT5U0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785316631; c=relaxed/simple; bh=seAGetksPejqRFaq9f9jvArLrvMFnjwkn5VqZjbCWGk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=OYWZruNt85+eyHsF5S+V9Zw1SsMHhIgz+pEgOAMP8EIWVgVfKmwpMR3Y7UFQK09Hk1lp1zk0g57JOM3GWo/sUhHiJ/9jpqjDFaj5541a/KqZeHle6OturguRN8Qjj9K/SqHDc7Gsum4ZwGZcxuF70Sm6T91Yx9zM3mrsPxq2BSw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=FvFPi8rL; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="FvFPi8rL" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 57E161F000E9; Wed, 29 Jul 2026 09:17:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785316628; bh=eVJxQEzXpQWTkC0PquYQGc64UxulzBTi6LZYawBPiGU=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=FvFPi8rLszzW2JvBTxLJOwLbPhEP70GBYLPnpq4gvBp9sQ4l8b6CbQql0lKzn3jU8 O9OXXRBtHw8AH4JdcjfKimSMRpmEttJSsZwbpw3UrEvkbUgLQQcPnnS0m/IpK8OT9k B8RC+LnKcQgGbSDRO/vOysLCNk6eXNl6bNJgxfV4oJXYwYaJMkgHBOOCOmn+6mRma5 lCCD2mPlhlGYRWukQaN6ZqqoRThFq3jZULJmbS4en621R564PKvVzJqa/jEJFWyy0b pzbT56zNMy3edqS2XmGZiuv5+M4iKahrMsso09q92YRHFLU9QZLJvjXluZYwdwlXw6 04911Xqp1BYqQ== Message-ID: <39f12852-a0d4-4d90-8ea3-dbfa7e1c2059@kernel.org> Date: Wed, 29 Jul 2026 11:16:58 +0200 Precedence: bulk X-Mailing-List: spacemit@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 1/2] dt-bindings: gpu: img,powervr-rogue: add spacemit,k3-gpu To: Baihui Liang Cc: "frank.binns" , robh , krzk+dt , conor+dt , dlan , dri-devel , devicetree , linux-kernel , linux-riscv , spacemit References: <065a229b-e6a8-4cce-8725-9c2e19c8f463@kernel.org> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 29/07/2026 11:14, Baihui Liang wrote: > On Wed Jul 29, 2026 at 3:57 PM CST, Krzysztof Kozlowski wrote: >> On 29/07/2026 09:46, Baihui Liang wrote: >>> On Tue, Jul 28, 2026, Krzysztof Kozlowski wrote: >>> > > [...] >>> > > spacemit,k3-gpu is added to the existing ti,am62-gpu/ti,am62p-gpu/ >>> > > ti,j721s2-gpu "if" block that restricts clocks to a single entry, >>> > > since K3 has the same single-clock requirement. It does not match any >>> > > "if" block that constrains power-domains, so that property falls back >>> > >>> > I don't get this explanation. Are you explaining what the patch is doing >>> > or explaining WHY you did this that way? >>> >>> >>> That paragraph was describing schema mechanics, which does not belong in >>> a commit message. v4 will drop it and state only the hardware facts: the >>> K3 integration of the BXM-4-64 has a single "core" clock, and it has no >>> software-controllable GPU power domain. >>> >>> >>> > > to this schema's general constraints, where it is optional. This >>> > > leaves room for a power-domains provider to be added later without a >>> > > further binding change, should one ever be modelled in Linux for this >>> > > SoC. >>> > >>> > No, you need to provide constraints now. Please read carefully >>> > writing-bindings. >>> >>> >>> Understood. spacemit,k3-gpu currently matches no power-domains "if" >>> block, so it falls back to the top-level 1-2 domains with >>> power-domain-names "a"/"b". That would let a K3 DT with two power >>> domains pass validation, which does not describe this hardware. v4 will >>> add an explicit "if" block: >>> >>> >>>     - if: >>>         properties: >>>           compatible: >>>             contains: >>>               const: spacemit,k3-gpu >>>       then: >>>         properties: >>>           power-domains: false >>>           power-domain-names: false >> >> I understand only half of this. Please fix your email client. >> >> And why this reply misses reply-to header which connects it to proper >> thread? How am I supposed to find the thread now, among 200 I received >> yesterday? > > Sorry -- that went out through a webmail client which sent HTML, so the > quoting and the YAML indentation were destroyed, and it composed a new > message instead of replying in place, which is why it lost the thread. > I have switched to git send-email over our own SMTP; this reply should > be plain text and properly threaded. > >> So your name is presented here as "Baihui Liang" then why do you use >> some fake company name? > > liangbaihui@linux.spacemit.com is my real work address at SpacemiT. It is > now sent through the company's own mail server. Again: then why do you use fake company name as name? Actually not a company name, but laminated product of some company? What is Sterling-Ash? 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On 29/07/2026 11:14, Baihui Liang wrote: > On Wed Jul 29, 2026 at 3:57 PM CST, Krzysztof Kozlowski wrote: >> On 29/07/2026 09:46, Baihui Liang wrote: >>> On Tue, Jul 28, 2026, Krzysztof Kozlowski wrote: >>> > > [...] >>> > > spacemit,k3-gpu is added to the existing ti,am62-gpu/ti,am62p-gpu/ >>> > > ti,j721s2-gpu "if" block that restricts clocks to a single entry, >>> > > since K3 has the same single-clock requirement. It does not match any >>> > > "if" block that constrains power-domains, so that property falls back >>> > >>> > I don't get this explanation. Are you explaining what the patch is doing >>> > or explaining WHY you did this that way? >>> >>> >>> That paragraph was describing schema mechanics, which does not belong in >>> a commit message. v4 will drop it and state only the hardware facts: the >>> K3 integration of the BXM-4-64 has a single "core" clock, and it has no >>> software-controllable GPU power domain. >>> >>> >>> > > to this schema's general constraints, where it is optional. This >>> > > leaves room for a power-domains provider to be added later without a >>> > > further binding change, should one ever be modelled in Linux for this >>> > > SoC. >>> > >>> > No, you need to provide constraints now. Please read carefully >>> > writing-bindings. >>> >>> >>> Understood. spacemit,k3-gpu currently matches no power-domains "if" >>> block, so it falls back to the top-level 1-2 domains with >>> power-domain-names "a"/"b". That would let a K3 DT with two power >>> domains pass validation, which does not describe this hardware. v4 will >>> add an explicit "if" block: >>> >>> >>>     - if: >>>         properties: >>>           compatible: >>>             contains: >>>               const: spacemit,k3-gpu >>>       then: >>>         properties: >>>           power-domains: false >>>           power-domain-names: false >> >> I understand only half of this. Please fix your email client. >> >> And why this reply misses reply-to header which connects it to proper >> thread? How am I supposed to find the thread now, among 200 I received >> yesterday? > > Sorry -- that went out through a webmail client which sent HTML, so the > quoting and the YAML indentation were destroyed, and it composed a new > message instead of replying in place, which is why it lost the thread. > I have switched to git send-email over our own SMTP; this reply should > be plain text and properly threaded. > >> So your name is presented here as "Baihui Liang" then why do you use >> some fake company name? > > liangbaihui@linux.spacemit.com is my real work address at SpacemiT. It is > now sent through the company's own mail server. Again: then why do you use fake company name as name? Actually not a company name, but laminated product of some company? What is Sterling-Ash? Best regards, Krzysztof _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv