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From: Krzysztof Kozlowski <krzk@kernel.org>
To: Frank Li <Frank.Li@nxp.com>, Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
	<devicetree@vger.kernel.org>,
	"open list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
	<imx@lists.linux.dev>,
	"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
	<linux-arm-kernel@lists.infradead.org>,
	open list <linux-kernel@vger.kernel.org>
Cc: Liu Ying <victor.liu@nxp.com>
Subject: Re: [PATCH 1/1] ARM: dts: imx6sx: remove fallback compatible string fsl,imx28-lcdif
Date: Thu, 5 Mar 2026 22:34:18 +0100	[thread overview]
Message-ID: <c64ee6d6-d948-4146-8463-0e68ba542404@kernel.org> (raw)
In-Reply-To: <20260305212312.4053922-1-Frank.Li@nxp.com>

On 05/03/2026 22:23, Frank Li wrote:
> i.MX6SX uses the v6 LCDIF controller, while i.MX28 uses the older v4
> version. The driver has supported the "fsl,imx6sx-lcdif" compatible string
> since the initial commit:
> 
>    commit 45d59d704080 ("drm: Add new driver for MXSFB controller")
> 
> Therefore the fallback compatible string "fsl,imx28-lcdif" is not required
> and can be removed.

It is required - you are changing the ABI and possibly impacting other
users without valid reason ("not required and can be removed" is not a
reason).

Best regards,
Krzysztof

  reply	other threads:[~2026-03-05 21:34 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-05 21:23 Frank Li
2026-03-05 21:34 ` Krzysztof Kozlowski [this message]
2026-03-05 22:48   ` Frank Li
2026-03-06  7:16     ` Krzysztof Kozlowski
2026-03-06  3:12   ` Liu Ying
2026-03-06  3:24 ` Liu Ying

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