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Thu, 22 Oct 2026 17:31:21 +0200 Received: from se-intmail01x.se.axis.com (10.4.0.28) by se-mail10w.axis.com (10.20.40.10) with Microsoft SMTP Server id 15.2.1748.39 via Frontend Transport; Thu, 22 Oct 2026 17:31:20 +0200 Received: from pc51726-2243.se.axis.com (pc51726-2243.se.axis.com [10.88.125.62]) by se-intmail01x.se.axis.com (Postfix) with ESMTP id EB9B03586; Thu, 22 Oct 2026 17:31:20 +0200 (CEST) Received: by pc51726-2243.se.axis.com (Postfix, from userid 15273) id E3D786026026; Thu, 22 Oct 2026 17:31:20 +0200 (CEST) From: Lars Rask Subject: [PATCH 0/2] Add support for st75156 in st7571 display driver Date: Thu, 22 Oct 2026 17:31:04 +0200 Message-ID: <20261022-add_st75156_support-v1-0-582525a39a39@axis.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIADgs2moC/x3MQQqAIBBA0avErBPUUKGrRIToVLMxcSoC6e5Jy 7f4vwJjIWQYuwoFb2I6UoPqOwi7TxsKis2gpbZKKiN8jAufzihjF75yPsoppMSgg1vt4C20Mhd c6fmv0/y+H5+cJ0tlAAAA X-Change-ID: 20261015-add_st75156_support-00ec2c7f63a6 To: Marcus Folkesson , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Herring , "Krzysztof Kozlowski" , Conor Dooley CC: , , , , Lars Rask X-Mailer: b4 0.14.3 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CPH1EPF00000530:EE_|GV2PR02MB9568:EE_ X-MS-Office365-Filtering-Correlation-Id: 96853b2a-64f6-4185-a350-08df305186a8 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|23010399003|1800799024|36860700016|82310400026|56012099006|11063799006|261021121427099003|261009223027099003|261021123027099003|10067099003|18002099003; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 81psQLW/9rC0OIxU1QFVchcwev1o5V+Fl9eg22wyFtUGffd0Ay+Mi4l1gqhaRzJKM1wvuC4ifQ2MDlW9b5hnvavGoBjVNqbUKulJi7xdqM9sOWYFVkwxlgcKaSgj2MHyHOPWO4s+LWhzp09g/QwdUMVaF4J2Wp0rl6sn2+H5D9R/fUIN+56Ce1Iwh4Pgm2pZco7kVLhKoFyvZaxCzCJCU/468jav1gN/dB0IGwduW81R0qX7yrPfiVFyX2N+l+ga480C5k5tc6Mx/rgY/Q+KTYFWNzq4WNPFHm0UBnJ4/HYUEhtWK2LLxt6NdwUFKajXDd+gAJYcc1EdeKtEOoIR8PXG8ed84GZai6/EKdR/+Gih/Q9eRF3h53QSmxi/qDHVsjI0gu/Y9mZIzsO44a1gRvDnkk3JbkXHv9YdOIbAyo6dRpY8ZrSijpTfAvR7jA9R X-OriginatorOrg: axis.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Oct 2026 15:31:21.9380 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 96853b2a-64f6-4185-a350-08df305186a8 X-MS-Exchange-CrossTenant-Id: 78703d3c-b907-432f-b066-88f7af9ca3af X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=78703d3c-b907-432f-b066-88f7af9ca3af;Ip=[195.60.68.100];Helo=[mail.axis.com] X-MS-Exchange-CrossTenant-AuthSource: CPH1EPF00000530.eurprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: GV2PR02MB9568 To: Marcus Folkesson To: Maarten Lankhorst To: Maxime Ripard To: Thomas Zimmermann To: David Airlie To: Simona Vetter To: Rob Herring To: Krzysztof Kozlowski To: Conor Dooley Cc: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org Cc: devicetree@vger.kernel.org Cc: kernel@axis.com The Sitronix st7571 driver previously supported the st7567 and st7571 chips. This commit adds support for the st75156 chip used in SPI 4 wire mode. In order to use the st75156 chip, you need to specify CONFIG_DRM_ST7571=m and CONFIG_DRM_ST7571_SPI=m in the .config file, and also use the compatible string "sitronix,st75156" in the device tree. Signed-off-by: Lars Rask --- Lars Rask (2): drm/sitronix/st7571-spi: Add support for ST75156 controller dt-bindings: display: sitronix,st75156: add example for SPI .../bindings/display/sitronix,st75156.yaml | 67 ++++ MAINTAINERS | 1 + drivers/gpu/drm/sitronix/st7571-spi.c | 118 +++++- drivers/gpu/drm/sitronix/st7571.c | 420 ++++++++++++++++++++- drivers/gpu/drm/sitronix/st7571.h | 20 + 5 files changed, 617 insertions(+), 9 deletions(-) --- base-commit: 8d3ae59288f1e7d58d76558a6ee96d533bc5019f change-id: 20261015-add_st75156_support-00ec2c7f63a6 Best regards, -- Lars Rask