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Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uiwkC-0000000Ak1D-0LeL; Mon, 04 Aug 2025 15:04:56 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uiw4H-0000000AeTj-36Cd; Mon, 04 Aug 2025 14:21:38 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 9A6265C0EF4; Mon, 4 Aug 2025 14:21:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C83E2C4CEE7; Mon, 4 Aug 2025 14:21:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1754317296; bh=THg8fAXPOZpcU1UGe5NLfNZG1W+ChsloJhTKXS2XCtU=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=h3vhkvxabpJMXDlINEWLQk8ydeeUQRoRcThhCsg5uAbdxXPQbvYpZg5nRyu1GhkbH xsuhqcazwRf8jzExikPL24G7pd8R3A+M16x7zSGSccfClPUb5CdUSFZACV99cW4OwM Pg0lkkh+6B8JaE9n6NILQrWXifQkMzoENHQHlejpSMrXhbz90yDtmOEEXyBY6q4aqU 3HkTXAxdODW73D2tUacw6/rNrYztKUSgXZ+pHPX3YG9QB14JFGOW3uDH8je1sOt8ra n+fuUtxXnIPUB4ArQkE5EloA0CL5QMZcPpzH8JZsUgIscFGshDWRWy79GeWTiCss0m 3/nUg3sie37xA== Message-ID: Date: Mon, 4 Aug 2025 16:21:30 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 09/27] dt-bindings: clock: mediatek: Describe MT8196 clock controllers To: AngeloGioacchino Del Regno , Laura Nao , wenst@chromium.org Cc: conor+dt@kernel.org, devicetree@vger.kernel.org, guangjie.song@mediatek.com, kernel@collabora.com, krzk+dt@kernel.org, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, matthias.bgg@gmail.com, mturquette@baylibre.com, netdev@vger.kernel.org, nfraprado@collabora.com, p.zabel@pengutronix.de, richardcochran@gmail.com, robh@kernel.org, sboyd@kernel.org References: <20250804083540.19099-1-laura.nao@collabora.com> <373f44c3-8a6a-4d52-ba6b-4c9484e2eac1@kernel.org> <1db77784-a59a-49bd-89b5-9e81e6d3bafc@collabora.com> <00a12553-b248-4193-8017-22fea07ee196@collabora.com> <2555e9fe-3bc0-4f89-9d0b-2f7f946632e7@kernel.org> <62edb8e3-aff6-4225-b520-f4b73aef145d@collabora.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250804_072137_862991_4A61B1CB X-CRM114-Status: GOOD ( 11.49 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On 04/08/2025 16:15, AngeloGioacchino Del Regno wrote: > Il 04/08/25 15:58, Krzysztof Kozlowski ha scritto: >> On 04/08/2025 15:27, AngeloGioacchino Del Regno wrote: >>> >>> We discussed about aggregating votes, yes, in software - this instead is a >>> *broken* hardware that does the aggregation internally and does not require >>> nor want external drivers to do the aggregation. >>> >>>> Maybe it is just the name, so avoid all the confusing "votes" if this is >>>> not voting system. If this is a voting system, then don't use custom >>>> phandles. >>> >>> Being it fundamentally *broken*, this being a voting system is what the hardware >>> initially wanted to be - but effectively, since it requires YOU to: >>> - Make sure that power supplies are turned on, if not, turn them on by "touching" >>> HW registers (so, without any assistance from the voter MCU), if any; >>> - Turn on parent clocks manually, if any, before using the "voter mcu" to try >>> to ungate that clock; and >>> - Enable the "FENC" manually, after the mcu says that the clock was ungated. >> >> >> I understand that "YOU" as Linux driver, when you want to do something >> (e.g. toggle) a clock? > > "you" == Linux driver, yes. > >> If so this looks a lot like power domain, although with some differences. >> > > A power domain ungates power to something. Does more, it is not a simple supply. > > These are clocks, giving a (x) (M)Hz signal to something. Your earlier message about "YOU" said: " - Make sure that power supplies are turned on, if not, turn them on by "touching" HW registers (so, without any assistance from the voter MCU), if any;" so not a simple clocks stuff. Best regards, Krzysztof