linux-kernel - Re: [PATCH 2/2] soc: samsung: exynos-pmu: update to use of_syscon_register

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Date: Tue, 18 Jun 2024 16:43:11 +0200
From: "Arnd Bergmann" <arnd@...db.de>
To: "Peter Griffin" <peter.griffin@...aro.org>, "Lee Jones" <lee@...nel.org>,
 "Krzysztof Kozlowski" <krzk@...nel.org>,
 "Alim Akhtar" <alim.akhtar@...sung.com>
Cc: linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org,
 linux-kernel@...r.kernel.org, "Tudor Ambarus" <tudor.ambarus@...aro.org>,
 André Draszik <andre.draszik@...aro.org>,
 "Saravana Kannan" <saravanak@...gle.com>,
 "William McVicker" <willmcvicker@...gle.com>,
 "Sam Protsenko" <semen.protsenko@...aro.org>, kernel-team@...roid.com
Subject: Re: [PATCH 2/2] soc: samsung: exynos-pmu: update to use
 of_syscon_register_regmap()

On Fri, Jun 14, 2024, at 16:04, Peter Griffin wrote:
> For SoCs like gs101 that need a special regmap, register this with
> of_syscon_register_regmap api, so it can be returned by
> syscon_regmap_lookup_by_phandle() and friends.
>
> For SoCs that don't require a custom regmap, revert back to syscon
> creating the mmio regmap rather than duplicating the logic here.
>
> exynos_get_pmu_regmap_by_phandle() api is also updated to retrieve
> the regmap via syscon. The exynos_get_pmu_regmap_by_phandle() api
> is kept around until fw_devlink support for syscon property is added
> for the pinctrl-samsung driver that also runs at postcore_initcall
> level.
>
> All other exynos client drivers can revert back to
> syscon_regmap_lookup_by_phandle().
>
> Signed-off-by: Peter Griffin <peter.griffin@...aro.org>

Reviewed-by: Arnd Bergmann <arnd@...db.de>