From: William McVicker <willmcvicker@google.com>
To: "Rob Herring (Arm)" <robh@kernel.org>
Cc: Lee Jones <lee@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
Pankaj Dubey <pankaj.dubey@samsung.com>,
Heiko Stuebner <heiko@sntech.de>,
Liviu Dudau <liviu.dudau@arm.com>,
Sudeep Holla <sudeep.holla@arm.com>,
Lorenzo Pieralisi <lpieralisi@kernel.org>,
Peter Griffin <peter.griffin@linaro.org>,
John Madieu <john.madieu.xa@bp.renesas.com>,
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 2/3] mfd: syscon: Remove the platform driver support
Date: Tue, 17 Dec 2024 11:36:57 -0800 [thread overview]
Message-ID: <Z2HS2Y0nGBMgvz8U@google.com> (raw)
In-Reply-To: <20241217-syscon-fixes-v2-2-4f56d750541d@kernel.org>
On 12/17/2024, Rob Herring (Arm) wrote:
> The platform driver is dead code. It is not used by DT platforms since
> commit bdb0066df96e ("mfd: syscon: Decouple syscon interface from
> platform devices") which said:
>
> For non-DT based platforms, this patch keeps syscon platform driver
> structure so that syscon can be probed and such non-DT based drivers
> can use syscon_regmap_lookup_by_pdev API and access regmap handles.
> Once all users of "syscon_regmap_lookup_by_pdev" migrated to DT based,
> we can completely remove platform driver of syscon, and keep only helper
> functions to get regmap handles.
>
> The last user of syscon_regmap_lookup_by_pdevname() was removed in 2018.
> syscon_regmap_lookup_by_pdevname() was then removed in 2019, but that
> commit failed to remove the rest of the platform driver.
>
> Tested-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
I verified this works on my Pixel 6. Thanks!
Tested-by: Will McVicker <willmcvicker@google.com>
Thanks,
Will
next prev parent reply other threads:[~2024-12-17 19:38 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-17 18:11 [PATCH v2 0/3] mfd: syscon: Cleanup, fix race condition and remove platform driver Rob Herring (Arm)
2024-12-17 18:11 ` [PATCH v2 1/3] mfd: syscon: Fix race in device_node_get_regmap() Rob Herring (Arm)
2024-12-17 19:35 ` William McVicker
2024-12-23 2:11 ` Pankaj Dubey
2024-12-23 2:14 ` Pankaj Dubey
2024-12-17 18:11 ` [PATCH v2 2/3] mfd: syscon: Remove the platform driver support Rob Herring (Arm)
2024-12-17 19:36 ` William McVicker [this message]
2024-12-18 10:10 ` Liviu Dudau
2024-12-23 2:13 ` Pankaj Dubey
2024-12-23 14:59 ` Krzysztof Kozlowski
2025-10-12 13:33 ` Janne Grunau
2024-12-17 18:11 ` [PATCH v2 3/3] mfd: syscon: Allow syscon nodes without a "syscon" compatible Rob Herring (Arm)
2024-12-17 19:37 ` William McVicker
2024-12-23 2:16 ` Pankaj Dubey
2024-12-23 15:02 ` Krzysztof Kozlowski
2025-01-22 9:43 ` Vaishnav Achath
2025-01-24 20:03 ` Rob Herring
2025-01-09 11:12 ` [PATCH v2 0/3] mfd: syscon: Cleanup, fix race condition and remove platform driver Lee Jones
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