From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 17E0E4718C7; Fri, 11 Sep 2026 13:18:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789132738; cv=none; b=q7bJOGIagSsr68OCFN+KiM1NvjqrG9yBgkbbx8tKJyKyPyhQbvaKULUDCzhWloDOWIoDd+/EeveMB1Puu8ihev1RxLVHV2V7dh36CQrWxNzbueLMfJAl9dCr4mGYu1hti1NimeSPQkjS782rtQ5CUMNjRZDgQlcpPDHGelpuTFY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789132738; c=relaxed/simple; bh=ORjLkEMAmq6RUQNyxk7AlOhfj9MJ7dSVXcsdNHwE9HA=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=X5FxSE/IVc1IZJfxU9CBzFcZXCTkD+7WO9x6qsf4BJdxXuTIjvr2M7Sc+ydBcwROzVvegZnpQt3DRMWgWwBGBn1kkEQTTsg26HBg7dkFcifI6d5BKmsVBfUmx2UpmwiV5WX3X6gNjQr+ZU9Ajb0Kodezv4SjzhNXae5IkptJFBE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=b04UNup/; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="b04UNup/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8A6621F000FF; Fri, 11 Sep 2026 13:18:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789132737; bh=dZdRu2CSEZY9QFD3HDV8mXzCwNFi5Z7CBlM1UouuH1s=; h=From:Subject:Date:To:Cc; b=b04UNup/sPk0TL2fbzX5FSk2tWWaaJDbetaZciK78BsdY/hYMYz4A9t8D+rD58TaZ HBTd4j0PThSvJHXjzCuc3XFWu/VtvoiRgsXzuy1HP7epbrspNSA+BtdhsKsgfhGhYO Z2h369yIpVRIWEG5wXZFhhSHEnvlmlWRmKJpHOVvntDVzpLn7NZG63hCVvN9+N2SRT zPgzQvgqoqJgu82LUW7TZy37LCPMfOrf53bQ1qL5TfvbXEUH8HBk04k1EkAyThCfrv duu0z2ErojJelp+td+WQ4SsUq35I32gQrceRNVPbbjD3R2qgQkONvr/14MN1m5c0UA PUX5rJ/5cnklA== From: Konrad Dybcio Subject: [PATCH 0/3] drm_panel_follower support for RMI4 Date: Fri, 11 Sep 2026 15:18:26 +0200 Message-Id: <20260911-topic-rmi4_panel_follower-v1-0-c1b2cf1cdb62@oss.qualcomm.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/yXMQQrCMBBA0auUWRuY1BKsVxEpaZzUkZiESdVC6 d0bdfkW/69QSJgKnJsVhN5cOMUKfWjA3W2cSPGtGlpsDfZaqzlldkqe3A3ZRgqDTyGkD4ky9nT 0IyL21kDts5Dn5fe+XP8ur/FBbv4OYdt2+lfZHX0AAAA= X-Change-ID: 20260911-topic-rmi4_panel_follower-6a83fb0009a6 To: Dmitry Torokhov , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "Jason A. Donenfeld" , Matthias Schiffer , Vincent Huang , Bjorn Andersson , Konrad Dybcio Cc: linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Konrad Dybcio X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1789132733; l=1109; i=konrad.dybcio@oss.qualcomm.com; s=20230215; h=from:subject:message-id; bh=ORjLkEMAmq6RUQNyxk7AlOhfj9MJ7dSVXcsdNHwE9HA=; b=p8Lfsk7mdNyRCao62okwtmKiaKw+3fIT6aniIHe6aPlBhSLDIuBxFKuXrgtPEIyA0XZLtjzcL p8IhPe0XKHcACy7Zo3A9tegsCsyi7l78bPYUWzX1AScwyBOgz3gF/Kz X-Developer-Key: i=konrad.dybcio@oss.qualcomm.com; a=ed25519; pk=iclgkYvtl2w05SSXO5EjjSYlhFKsJ+5OSZBjOkQuEms= RMI4 is often implemented on in-cell panels which require tight power seqeuncing. The kernel way to approach that is the panel_follower API. This series adds that in the RMI4 driver and wires it up on a Snapdragon 845-based Sony Xperia XZ2, also resolving the DT warnings stemming from the current hack. Signed-off-by: Konrad Dybcio --- Konrad Dybcio (3): dt-bindings: input: syna,rmi4: Allow 'panel' property Input: synaptics-rmi4: Support drm_panel_follower arm64: dts: qcom: sdm845-tama: Declare touchscreen as a panel follower .../devicetree/bindings/input/syna,rmi4.yaml | 4 + .../boot/dts/qcom/sdm845-sony-xperia-tama.dtsi | 8 +- drivers/input/rmi4/Kconfig | 1 + drivers/input/rmi4/rmi_i2c.c | 170 ++++++++++++++++++--- 4 files changed, 153 insertions(+), 30 deletions(-) --- base-commit: 944a035ecca915ae947905dcfb03f2b9dc6d032c change-id: 20260911-topic-rmi4_panel_follower-6a83fb0009a6 Best regards, -- Konrad Dybcio