{"id":2222719,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2222719/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-gpio/patch/20260413-waveshare-dsi-touch-v3-8-3aeb53022c32@oss.qualcomm.com/","project":{"id":42,"url":"http://patchwork.ozlabs.org/api/1.1/projects/42/?format=json","name":"Linux GPIO development","link_name":"linux-gpio","list_id":"linux-gpio.vger.kernel.org","list_email":"linux-gpio@vger.kernel.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260413-waveshare-dsi-touch-v3-8-3aeb53022c32@oss.qualcomm.com>","date":"2026-04-13T14:05:31","name":"[v3,08/21] drm/panel: himax-hx8394: set prepare_prev_first","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"1da4c771501dad61ad75279df1cf454e4badfbb6","submitter":{"id":90483,"url":"http://patchwork.ozlabs.org/api/1.1/people/90483/?format=json","name":"Dmitry Baryshkov","email":"dmitry.baryshkov@oss.qualcomm.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-gpio/patch/20260413-waveshare-dsi-touch-v3-8-3aeb53022c32@oss.qualcomm.com/mbox/","series":[{"id":499710,"url":"http://patchwork.ozlabs.org/api/1.1/series/499710/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-gpio/list/?series=499710","date":"2026-04-13T14:05:24","name":"drm/panel: support Waveshare DSI TOUCH kits","version":3,"mbox":"http://patchwork.ozlabs.org/series/499710/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2222719/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2222719/checks/","tags":{},"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-gpio@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=qualcomm.com header.i=@qualcomm.com header.a=rsa-sha256\n header.s=qcppdkim1 header.b=YYFzsybg;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com\n header.a=rsa-sha256 header.s=google header.b=J6cd32L4;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c04:e001:36c::12fc:5321; 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charset=\"utf-8\"","Content-Transfer-Encoding":"7bit","Message-Id":"<20260413-waveshare-dsi-touch-v3-8-3aeb53022c32@oss.qualcomm.com>","References":"<20260413-waveshare-dsi-touch-v3-0-3aeb53022c32@oss.qualcomm.com>","In-Reply-To":"<20260413-waveshare-dsi-touch-v3-0-3aeb53022c32@oss.qualcomm.com>","To":"Neil Armstrong ,\n Jessica Zhang ,\n David Airlie , Simona Vetter ,\n Maarten Lankhorst ,\n Maxime Ripard ,\n Thomas Zimmermann ,\n Rob Herring ,\n Krzysztof Kozlowski ,\n Conor Dooley ,\n Cong Yang ,\n Ondrej Jirman ,\n Javier Martinez Canillas ,\n Jagan Teki , Liam Girdwood ,\n Mark Brown , Linus Walleij ,\n Bartosz Golaszewski ,\n Jie Gan ","Cc":"dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,\n linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org","X-Mailer":"b4 0.15.1","X-Developer-Signature":"v=1; a=openpgp-sha256; l=1037;\n i=dmitry.baryshkov@oss.qualcomm.com; h=from:subject:message-id;\n bh=DoendjqYMNCpaNDLx5nJc92Y8UtuCTST95sXT4ei12s=;\n b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBp3Pgn18hIWmMRBJH77hbN0nEy2AN7HiG9Wx+pK\n kM48SmCVmmJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCadz4JwAKCRCLPIo+Aiko\n 1d4PB/43iCoGV/XPHUY+LTdEOriQxtRXRqWo0WE7dOyI1sgHpDIIc5Xb4xOmgDn9sQaqDo7hYnM\n Mu0SIMUpakh6NGnaA+3O4SqgzeZBufPT9R30GGkHmqx2G5UBf9uxemus2YKiTbKuHfwP4KliY5I\n hutN7+y7vsN4vTfDhK5Fwq3fM3vATeevkRefyzcKASTSWuNdfme6f0obHPK4mirZVJT+vFLT03v\n aJsE14N5TLnnRuMxJTUdhsdpvlIDlrfUOB0NYk5B8zUyF8faTHrbMtEMG2rO1mBIFv+uj3frVym\n Y2IZ1jPuAJXj21WzV1dHtNWQsXiCLbHZ/q0Hsw4xsRd/YVOK","X-Developer-Key":"i=dmitry.baryshkov@oss.qualcomm.com; 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For DSI hosts is guaranteed only if the panel driver\nsets the .prepare_prev_first flag. Set it to let these panels work with\nthe DSI hosts which don't power on the link in their .mode_set callback.\n\nReviewed-by: Linus Walleij \nReviewed-by: Javier Martinez Canillas \nSigned-off-by: Dmitry Baryshkov \n---\n drivers/gpu/drm/panel/panel-himax-hx8394.c | 2 ++\n 1 file changed, 2 insertions(+)","diff":"diff --git a/drivers/gpu/drm/panel/panel-himax-hx8394.c b/drivers/gpu/drm/panel/panel-himax-hx8394.c\nindex c4d3e09a228d..d64f3521eb15 100644\n--- a/drivers/gpu/drm/panel/panel-himax-hx8394.c\n+++ b/drivers/gpu/drm/panel/panel-himax-hx8394.c\n@@ -792,6 +792,8 @@ static int hx8394_probe(struct mipi_dsi_device *dsi)\n \tif (ret)\n \t\treturn ret;\n \n+\tctx->panel.prepare_prev_first = true;\n+\n \tdrm_panel_add(&ctx->panel);\n \n \tret = mipi_dsi_attach(dsi);\n","prefixes":["v3","08/21"]}