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bh=+DtZ7KHlWFW9dVfF6zjD7yk0+18lEu8fKpeuCrRtv7k=; b=JrJjBMVDHh63w//pEpoICNa4C7XRUvep8URP44f0FrnQFNNn91NKL6D/uunzrS+N/7TaDZ TN2KXH96cRrRNPtqS3GoKuXEH3DCEPF8tsaR4JHOtmKQ1PSJ8nLPCAATOCO077x98hjw3A P8PpMakyd0SUwyLKz/LdGKeAMx4zhsbh7qjdIPjRiTPGqdb7S/Zi/zu2lthONhrV1JF87b 4IB2IzHJMZ0DKH6gtCMh+nHquKURAX005F4ur5zN0FFC8+MOk72NnqJOVca7Va1EK+B4II ehmQKR7ADSLDO2thJk8uyCTDrJ74CxDRl67hROuB9+P7RrjSbgfOAgUCXd9IKA== ARC-Seal: i=1; s=20260414; d=pengutronix.de; t=1794215208; a=rsa-sha256; cv=none; b=RkGpFIaeRX9mJqRNpOq1YveFioi0f+74ngkBxzy0t2mVwU5NQ0tMArUJAgaD7cL9gtJqAi 9LLrrIVI36oKMtN4J1qulRWqlsI7YJb7FpYGqCU6M4sSj76RHedfYQ+mVnlA2kIVzm3gAf RMjzlkazLGMzn8a/zV0sryhw2Z2DE/jlJHbtMM6HUqY9bA/l8ldbXHUiwNkvtM0FSmh02g JW+YD2eBdZtwsbv7diRzvXLcbhoE+G5y/aJROC+H8uDQQHJ5OvK7TYLZ0y7zub2Fzvu/cY Hs5o3zfSiEdwrnsXpoddQldraaQmAPcTzv2TGGG9mOk1vamURmI1aB77V1zARg== ARC-Authentication-Results: i=1; ORIGINATING; auth=pass smtp.auth=str@pengutronix.de smtp.mailfrom=s.trumtrar@pengutronix.de From: Steffen Trumtrar To: Krzysztof Kozlowski Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Shawn Guo , =?utf-8?Q?S=C3=B8ren?= Andersen , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v10 3/4] arm64: dts: imx8mp-skov-revc: convert to overlays In-Reply-To: References: <20261012-v7-0-topic-imx8mp-skov-dts-jutouch-7inch-v10-0-0906e57486a3@pengutronix.de> <20261012-v7-0-topic-imx8mp-skov-dts-jutouch-7inch-v10-3-0906e57486a3@pengutronix.de> <20261013-musical-brown-mamba-ff87a8@quoll> <87v774j0z8.fsf@pengutronix.de> User-Agent: mu4e 1.14.3; emacs 31.1 Date: Mon, 09 Nov 2026 10:06:47 +0100 Message-ID: <871p8uidaw.fsf@pengutronix.de> X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; format=flowed X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261109_010651_701353_132AA261 X-CRM114-Status: GOOD ( 25.19 ) X-Spam-Score: -2.1 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-15.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On 2026-10-14 at 07:53 +02, Krzysztof Kozlowski wrote: > On 14/10/2026 07:38, Steffen Trumtrar wrote: > > > > Hi, > > > > On 2026-10-13 at 09:31 +02, Krzysztof Kozlowski wrote: > > > >> On Mon, Oct 12, 2026 at 08:30:32AM +0200, Steffen Trumtrar wrote: > >>> The i.MX8MP Skov RevC jutouch 10" and Tian 7" variants are pretty > >>> similar, apart from the Display and touch controller. > >>> > >>> Move the common bindings to imx8mp-skov-revc-touch.dts and convert both > >>> variants to use overlays applied on this base version. > >>> > >>> Signed-off-by: Steffen Trumtrar > >>> --- > >>> arch/arm64/boot/dts/freescale/Makefile | 5 ++ > >>> .../imx8mp-skov-revc-jutouch-jt101tm023.dtso | 38 ++++++++++ > >>> .../dts/freescale/imx8mp-skov-revc-tian-g07017.dts | 81 ---------------------- > >>> .../freescale/imx8mp-skov-revc-tian-g07017.dtso | 40 +++++++++++ > >>> ...h-jt101tm023.dts => imx8mp-skov-revc-touch.dts} | 26 +++---- > >>> 5 files changed, 91 insertions(+), 99 deletions(-) > >>> > >>> diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile > >>> index 475e1ad9116e1..7c1b61249778e 100644 > >>> --- a/arch/arm64/boot/dts/freescale/Makefile > >>> +++ b/arch/arm64/boot/dts/freescale/Makefile > >>> @@ -707,6 +707,11 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mp-skov-revb-lt6.dtb > >>> dtb-$(CONFIG_ARCH_MXC) += imx8mp-skov-revb-mi1010ait-1cp1.dtb > >>> dtb-$(CONFIG_ARCH_MXC) += imx8mp-skov-revc-bd500.dtb > >>> dtb-$(CONFIG_ARCH_MXC) += imx8mp-skov-revc-hdmi.dtb > >>> + > >>> +imx8mp-skov-revc-jutouch-jt101tm023-dtbs += imx8mp-skov-revc-touch.dtb \ > >>> + imx8mp-skov-revc-jutouch-jt101tm023.dtbo > >>> +imx8mp-skov-revc-tian-g07017-dtbs += imx8mp-skov-revc-touch.dtb \ > >>> + imx8mp-skov-revc-tian-g07017.dtbo > >>> dtb-$(CONFIG_ARCH_MXC) += imx8mp-skov-revc-jutouch-jt101tm023.dtb > >>> dtb-$(CONFIG_ARCH_MXC) += imx8mp-skov-revc-tian-g07017.dtb > >>> dtb-$(CONFIG_ARCH_MXC) += imx8mp-toradex-smarc-dev.dtb > >>> diff --git > >>> a/arch/arm64/boot/dts/freescale/imx8mp-skov-revc-jutouch-jt101tm023.dtso > >>> b/arch/arm64/boot/dts/freescale/imx8mp-skov-revc-jutouch-jt101tm023.dtso > >>> new file mode 100644 > >>> index 0000000000000..33ddd08a7adb5 > >>> --- /dev/null > >>> +++ b/arch/arm64/boot/dts/freescale/imx8mp-skov-revc-jutouch-jt101tm023.dtso > >> > >> I do not understand this. This is a board, so not an overlay. > > > > yes, that's what I did up until v4. New board with new dts. > > > > - Link to v4: https://patch.msgid.link/20260706-v7-0-topic-imx8mp-skov-dts-jutouch-7inch-v4-0-dfc0c8827c02@pengutronix.de > > > > The boards are all very similar apart from the touch panel, but they are all > > "real" boards and don't share a SOM, so dtsi is also not correct. > > > > So why this is not a DTS? One could argue, that the board, the RevC-Touch, is always the same hardware and there is only a different panel connected to it. Which is what is really happening. The panel is an attached device with these boards. So, imx8mp-skov-revc-touch is the board without any touchpanel connected. This still boots and is a standalone board where you can connect different touch panels to. So, Peng [1] and Frank [2] are correct when they suggested overlays in v4, no? [1] https://lore.kernel.org/all/akupDXc1QA4uKfR6@shlinux89/ [2] https://lore.kernel.org/all/ak5nKnRUmOxDxgZd@SMW015318/ Best regard, Steffen -- Pengutronix e.K. | Dipl.-Inform. Steffen Trumtrar | Steuerwalder Str. 21 | https://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686| Fax: +49-5121-206917-5555 |