linux-kernel - Re: [PATCH v2 5/5] clk: samsung: introduce exynos8890 clock driver

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Message-ID: <20251022-savvy-sly-auk-a60073@kuoka>
Date: Wed, 22 Oct 2025 09:56:26 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Ivaylo Ivanov <ivo.ivanov.ivanov1@...il.com>
Cc: Sylwester Nawrocki <s.nawrocki@...sung.com>, 
	Chanwoo Choi <cw00.choi@...sung.com>, Alim Akhtar <alim.akhtar@...sung.com>, 
	Michael Turquette <mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>, 
	Conor Dooley <conor+dt@...nel.org>, linux-samsung-soc@...r.kernel.org, linux-clk@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
	Peter Griffin <peter.griffin@...aro.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 5/5] clk: samsung: introduce exynos8890 clock driver

On Fri, Oct 17, 2025 at 07:13:33PM +0300, Ivaylo Ivanov wrote:
> Introduce a clocks management driver for exynos8890, providing clocks
> for the peripherals of that SoC.
> 
> As exynos8890 is the first exynos SoC to feature Hardware Auto Clock
> Gating (HWACG), it differs from newer SoCs. Q-channel and Q-state bits
> are separate registers, unlike the CLK_CON_GAT_* ones that feature HWACG
> bits in the same register that controls manual gating. Hence, don't use
> the clk-exynos-arm64 helper, but implement logic that enforces manual
> gating.

Please CC @Peter Griffin in future versions.

How much of this can be shared between this and GS101?
https://lore.kernel.org/all/20251013-automatic-clocks-v1-0-72851ee00300@linaro.org/


Best regards,
Krzysztof