{"id":2224723,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2224723/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-gpio/patch/20260418-waveshare-dsi-touch-v4-3-b249f3e702bd@oss.qualcomm.com/","project":{"id":42,"url":"http://patchwork.ozlabs.org/api/1.2/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":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260418-waveshare-dsi-touch-v4-3-b249f3e702bd@oss.qualcomm.com>","list_archive_url":null,"date":"2026-04-17T23:16:22","name":"[v4,3/4] dt-bindings: gpio: describe Waveshare GPIO controller","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"5bad7d864bbf010236ec11b784596c2e733e18b7","submitter":{"id":90483,"url":"http://patchwork.ozlabs.org/api/1.2/people/90483/?format=json","name":"Dmitry Baryshkov","email":"dmitry.baryshkov@oss.qualcomm.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-gpio/patch/20260418-waveshare-dsi-touch-v4-3-b249f3e702bd@oss.qualcomm.com/mbox/","series":[{"id":500410,"url":"http://patchwork.ozlabs.org/api/1.2/series/500410/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-gpio/list/?series=500410","date":"2026-04-17T23:16:22","name":"drm/panel: support Waveshare DSI TOUCH kits","version":4,"mbox":"http://patchwork.ozlabs.org/series/500410/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2224723/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2224723/checks/","tags":{},"related":[],"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=EKfs5IuE;\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=Sdz4JUp6;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c09:e001:a7::12fc:5321; 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charset=\"utf-8\"","Content-Transfer-Encoding":"7bit","Message-Id":"<20260418-waveshare-dsi-touch-v4-3-b249f3e702bd@oss.qualcomm.com>","References":"<20260418-waveshare-dsi-touch-v4-0-b249f3e702bd@oss.qualcomm.com>","In-Reply-To":"<20260418-waveshare-dsi-touch-v4-0-b249f3e702bd@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,\n Conor Dooley ","X-Mailer":"b4 0.15.1","X-Developer-Signature":"v=1; a=openpgp-sha256; l=3635;\n i=dmitry.baryshkov@oss.qualcomm.com; h=from:subject:message-id;\n bh=QFyGUBjpv4MqdXiM8mWmHDArDsRkJpFYDlFfKXrJ+qM=;\n b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBp4r9Iv5xhufaEtYkC6QvNv+yB79Xjg8tcucfbU\n GPpWXq7U4GJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCaeK/SAAKCRCLPIo+Aiko\n 1QZdB/0Xirv0hja+h/Eg/Im/1sajcD2PL4HsG86Wjhg1rSgIoZlF5In2wlN4qEL4vWYsVMEttQa\n GuVRQfn8ZmQgIZeL3X4omDRYw6THCiyRf//j2VpVlrsYVGVpe91zhd380Lu5MNeZC9CXgkXs76W\n mmvX/I3QVYVICneKBYxiBtOF3VPi54RApWS6/vFWw7rCXV3tw+OCLlcvtBrbKoy6d8bDzt7nLNF\n Qwtaevb2ikOh2d3QaLzFVSluoYI6Ji6Ah8ZfvbYx9BlsAmyy1Kj3pn3vntdMLjoxOkZIvC4N1Vz\n Z8py20gICNPtXnkD1WNp8bLxJoK+9Kk9HJjA6hLvEkFZkK/i","X-Developer-Key":"i=dmitry.baryshkov@oss.qualcomm.com; a=openpgp;\n fpr=8F88381DD5C873E4AE487DA5199BF1243632046A","X-Proofpoint-Spam-Details-Enc":"AW1haW4tMjYwNDE3MDIzMCBTYWx0ZWRfX2S5JC0lg3OPX\n nOGl984fE7shyDwM6RJ/CjGUzadWoCprTJ4G0O1SrIEEZNLKRKA2/T7IwfdxYl+9PEfRyIcfLeB\n f1S0NA6e7IkVPI/K+ET+uzgPAfIFYQ+AvACswZYsZr6q7WbbWU8pqgle2i8/DTOCXdVbajJZ3OD\n zMdv4TJwLIIcKGfzhhw3l9jUMNfFxLyCJvw/RlNTAU63kxw0pmBWvbHHQxEDxyGSnqj9IE1BENg\n UjW7PSgcPEPB8z1jGGopqhCl7U3CsgTLasrGWqjX7QkOdX6iRkXF08UOEx0jOPVvCQswui7i+P6\n 8EtKlOye5lLjN3elx82tx7BrprG/VokUPGN0mAPDkZ31Q7Nx1JPQZlmCiD6vPQVg94ewUryAxTI\n Bx2vBi+Yqu+XpXaRbaUOitQHGB4gfvRsn6xAg+qSBHeyFezSxUUHq0QZIhJ47IEeodab1oQ9O3P\n 82O83eyeqVBJ7V8nrWQ==","X-Proofpoint-ORIG-GUID":"vvqsE-3rPrfEHIThEZb5EstmbL9rORGT","X-Authority-Analysis":"v=2.4 cv=FP0rAeos c=1 sm=1 tr=0 ts=69e2bf55 cx=c_pps\n a=mPf7EqFMSY9/WdsSgAYMbA==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10\n a=A5OVakUREuEA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22\n a=u7WPNUs3qKkmUXheDGA7:22 a=ZpdpYltYx_vBUK5n70dp:22 a=gEfo2CItAAAA:8\n a=XYAwZIGsAAAA:8 a=EUspDBNiAAAA:8 a=ClTKKeZw4Bcbv9k5X4IA:9 a=QEXdDO2ut3YA:10\n a=dawVfQjAaf238kedN5IG:22 a=sptkURWiP4Gy88Gu7hUp:22 a=E8ToXWR_bxluHZ7gmE-Z:22","X-Proofpoint-GUID":"vvqsE-3rPrfEHIThEZb5EstmbL9rORGT","X-Proofpoint-Virus-Version":"vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-04-17_02,2026-04-17_04,2025-10-01_01","X-Proofpoint-Spam-Details":"rule=outbound_notspam policy=outbound score=0\n clxscore=1015 impostorscore=0 spamscore=0 lowpriorityscore=0 bulkscore=0\n adultscore=0 priorityscore=1501 malwarescore=0 phishscore=0 suspectscore=0\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.22.0-2604070000 definitions=main-2604170230"},"content":"The Waveshare DSI TOUCH family of panels has separate on-board GPIO\ncontroller, which controls power supplies to the panel and the touch\nscreen and provides reset pins for both the panel and the touchscreen.\nAlso it provides a simple PWM controller for panel backlight.\n\nAdd bindings for these GPIO controllers. As overall integration might be\nnot very obvious (and it differs significantly from the bindings used by\nthe original drivers), provide complete example with the on-board\nregulators and the DSI panel.\n\nAcked-by: Conor Dooley \nSigned-off-by: Dmitry Baryshkov \n---\n .../bindings/gpio/waveshare,dsi-touch-gpio.yaml | 100 +++++++++++++++++++++\n 1 file changed, 100 insertions(+)","diff":"diff --git a/Documentation/devicetree/bindings/gpio/waveshare,dsi-touch-gpio.yaml b/Documentation/devicetree/bindings/gpio/waveshare,dsi-touch-gpio.yaml\nnew file mode 100644\nindex 000000000000..410348fcda25\n--- /dev/null\n+++ b/Documentation/devicetree/bindings/gpio/waveshare,dsi-touch-gpio.yaml\n@@ -0,0 +1,100 @@\n+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)\n+%YAML 1.2\n+---\n+$id: http://devicetree.org/schemas/gpio/waveshare,dsi-touch-gpio.yaml#\n+$schema: http://devicetree.org/meta-schemas/core.yaml#\n+\n+title: Waveshare GPIO controller on DSI TOUCH panels\n+\n+maintainers:\n+ - Dmitry Baryshkov \n+\n+description:\n+ Waveshare DSI TOUCH panel kits contain separate GPIO controller for toggling\n+ power supplies and panel / touchscreen resets.\n+\n+properties:\n+ compatible:\n+ const: waveshare,dsi-touch-gpio\n+\n+ reg:\n+ maxItems: 1\n+\n+ gpio-controller: true\n+\n+ '#gpio-cells':\n+ const: 2\n+\n+required:\n+ - compatible\n+ - reg\n+ - gpio-controller\n+ - \"#gpio-cells\"\n+\n+additionalProperties: false\n+\n+examples:\n+ - |\n+ #include \n+\n+ i2c {\n+ #address-cells = <1>;\n+ #size-cells = <0>;\n+\n+ wsgpio: gpio@45 {\n+ compatible = \"waveshare,dsi-touch-gpio\";\n+ reg = <0x45>;\n+ gpio-controller;\n+ #gpio-cells = <2>;\n+ };\n+ };\n+\n+ panel_avdd: regulator-panel-avdd {\n+ compatible = \"regulator-fixed\";\n+ regulator-name = \"panel-avdd\";\n+ gpios = <&wsgpio 0 GPIO_ACTIVE_HIGH>;\n+ enable-active-high;\n+ };\n+\n+ panel_iovcc: regulator-panel-iovcc {\n+ compatible = \"regulator-fixed\";\n+ regulator-name = \"panel-iovcc\";\n+ gpios = <&wsgpio 4 GPIO_ACTIVE_HIGH>;\n+ enable-active-high;\n+ };\n+\n+ panel_vcc: regulator-panel-vcc {\n+ compatible = \"regulator-fixed\";\n+ regulator-name = \"panel-vcc\";\n+ gpios = <&wsgpio 8 GPIO_ACTIVE_HIGH>;\n+ enable-active-high;\n+ regulator-always-on;\n+ };\n+\n+ dsi {\n+ #address-cells = <1>;\n+ #size-cells = <0>;\n+\n+ panel@0 {\n+ reg = <0>;\n+ compatible = \"waveshare,8.0-dsi-touch-a\", \"jadard,jd9365da-h3\";\n+ reset-gpios = <&wsgpio 1 GPIO_ACTIVE_LOW>;\n+ vdd-supply = <&panel_avdd>;\n+ vccio-supply = <&panel_iovcc>;\n+ backlight = <&wsgpio>;\n+\n+ port {\n+ panel_in: endpoint {\n+ remote-endpoint = <&dsi_out>;\n+ };\n+ };\n+ };\n+\n+ port {\n+ dsi_out: endpoint {\n+ data-lanes = <0 1 2 3>;\n+ remote-endpoint = <&panel_in>;\n+ };\n+ };\n+ };\n+...\n","prefixes":["v4","3/4"]}