From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C39AA17E4; Tue, 19 Aug 2025 22:45:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755643544; cv=none; b=F/aMLREKwIOh8UrXQg1T4hpjC0/9OW3IjQd1wbv47jxpXM93FwKXpEdrDnCl9E2zOjXjrjbs+bczv9Qv9V/rV8e6cQT6Joxk+rSTN1qqQKSqjH9sAs69OesCnenRSVcQuN7AKv5v/FUosXR1SEF/fkonBcVLYjIcz/PM91Pbds8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755643544; c=relaxed/simple; bh=X0+iUH3kcuJxsm3Ic7boKWg9aLiYyrT0rK3vfD8vqD0=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=VvvJAAGey8qO4Bpb9TecbPee61t3zQ7Rr35wDGZ/e5WgWkcTc/FIAOJtrKKGfnh/46U997jRjIu+ccR6na0l+0vWBkv93TIVUz63tOleNaR3yXqBuwUGs7I2o2Er0hwe8LmgO+eVkqprJL+45cWl80KYnVzM/fAzNJZe+pcpFKk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=nSusmXNB; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="nSusmXNB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2F7E2C4CEF1; Tue, 19 Aug 2025 22:45:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1755643543; bh=X0+iUH3kcuJxsm3Ic7boKWg9aLiYyrT0rK3vfD8vqD0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=nSusmXNBV2ZghQbDI4agfxaQ9TYHQYWiftWqYLlLpFJK66hQxbO9TrNJUyiX1mDKd Y0Vz0xi73l5CMRDFNhaFu5eD/uI8R7DIJCEUz7TzLTUMj9vsWeZa5Dt7hZNEGmBC/g eUj7nWCCCgxDnQpSmOwPPCgnmXjsaePwFGW6FXxrFR4D/GrLp/ScSaDnfQ+ZTGMRcJ 5iDKi+PoCCsdAz5MB+1dSLU8CQ1J6Paf3JI3YP+GVvmlUQ02ztElSdJ15M+GA8bDEW l1u5pYqb0ypP7urNOwz9VSVzfMeQ4/cleS6SWDgxJdH2qFmXIsFH6GTrMR6Z9zXEd1 ILjCvfhNqXuZg== Date: Tue, 19 Aug 2025 17:45:42 -0500 From: Rob Herring To: Kaustabh Chakraborty Cc: Neil Armstrong , Jessica Zhang , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Krzysztof Kozlowski , Conor Dooley , Jessica Zhang , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 0/2] Support for Synaptics TDDI series panels Message-ID: <20250819224542.GA1591380-robh@kernel.org> References: <20250819-panel-synaptics-tddi-v4-0-448f466d16a6@disroot.org> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250819-panel-synaptics-tddi-v4-0-448f466d16a6@disroot.org> On Tue, Aug 19, 2025 at 08:26:43PM +0530, Kaustabh Chakraborty wrote: > Synaptics' Touch and Display Driver Integration (TDDI) technology [1] > employs a single chip for both touchscreen and display capabilities. > Such designs reportedly help reducing costs and power consumption. > > Although the touchscreens, which are powered by Synaptics' > Register-Mapped Interface 4 (RMI4) touch protocol via I2C or SPI have > driver support in the kernel, the MIPI DSI display panels don't. > > This series introduces a rudimentary driver for controlling said display > panels, which supports TD4101 and TD4300 panels. > > [1] https://www.synaptics.com/technology/display-integration > > Signed-off-by: Kaustabh Chakraborty > --- > Changes in v4: > - utilized drm_connector_helper_get_modes_fixed() (dmitry.baryshkov) > - constified backlight properties (dmitry.baryshkov) > - Link to v3: https://lore.kernel.org/r/20250720-panel-synaptics-tddi-v3-0-43a5957f4b24@disroot.org Where's Krzysztof's Reviewed-by? > > Changes in v3: > - fixed various dt_binding_check errors (robh's bot) > - adjusted commit description of [v2 1/2] (robh) > - utilized devm_drm_panel_alloc() and devm_regulator_bulk_get_const() > - Link to v2: https://lore.kernel.org/r/20250625-panel-synaptics-tddi-v2-0-7a62ab1d13c7@disroot.org > > Changes in v2: > - fixed various dt_binding_check errors (conor) > - did s/tddi_update_brightness/tddi_update_status > - added check for panel enable in tddi_update_status() > - used backlight_get_brightness() in appropriate places > - Link to v1: https://lore.kernel.org/r/20250612-panel-synaptics-tddi-v1-0-dfb8a425f76c@disroot.org > > --- > Kaustabh Chakraborty (2): > dt-bindings: display: panel: document Synaptics TDDI panel > drm: panel: add support for Synaptics TDDI series DSI panels > > .../display/panel/synaptics,td4300-panel.yaml | 89 +++++++ > drivers/gpu/drm/panel/Kconfig | 11 + > drivers/gpu/drm/panel/Makefile | 1 + > drivers/gpu/drm/panel/panel-synaptics-tddi.c | 276 +++++++++++++++++++++ > 4 files changed, 377 insertions(+) > --- > base-commit: 3ac864c2d9bb8608ee236e89bf561811613abfce > change-id: 20250523-panel-synaptics-tddi-0b0b3f07f814 > > Best regards, > -- > Kaustabh Chakraborty >