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[82.58.49.236]) by smtp.gmail.com with ESMTPSA id d21-20020a170906371500b009890e402a6bsm2065390ejc.221.2023.07.11.23.29.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Jul 2023 23:29:22 -0700 (PDT) From: Dario Binacchi To: linux-kernel@vger.kernel.org Cc: Amarula patchwork , Raphael Gallais-Pou , Philippe Cornu , michael@amarulasolutions.com, Dario Binacchi , Alexandre Torgue , Conor Dooley , Krzysztof Kozlowski , Maxime Coquelin , Rob Herring , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com Subject: [PATCH v6 1/3] ARM: dts: stm32: add ltdc support on stm32f746 MCU Date: Wed, 12 Jul 2023 08:29:16 +0200 Message-Id: <20230712062918.2248573-2-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20230712062918.2248573-1-dario.binacchi@amarulasolutions.com> References: <20230712062918.2248573-1-dario.binacchi@amarulasolutions.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add LTDC (Lcd-tft Display Controller) support. Signed-off-by: Dario Binacchi --- (no changes since v1) arch/arm/boot/dts/st/stm32f746.dtsi | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm/boot/dts/st/stm32f746.dtsi b/arch/arm/boot/dts/st/stm= 32f746.dtsi index d1802efd067c..36eda1562e83 100644 --- a/arch/arm/boot/dts/st/stm32f746.dtsi +++ b/arch/arm/boot/dts/st/stm32f746.dtsi @@ -507,6 +507,16 @@ pwm { }; }; =20 + ltdc: display-controller@40016800 { + compatible =3D "st,stm32-ltdc"; + reg =3D <0x40016800 0x200>; + interrupts =3D <88>, <89>; + resets =3D <&rcc STM32F7_APB2_RESET(LTDC)>; + clocks =3D <&rcc 1 CLK_LCD>; + clock-names =3D "lcd"; + status =3D "disabled"; + }; + pwrcfg: power-config@40007000 { compatible =3D "st,stm32-power-config", "syscon"; reg =3D <0x40007000 0x400>; --=20 2.32.0 From nobody Sat Feb 7 19:45:56 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C349EC001B0 for ; Wed, 12 Jul 2023 06:30:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232125AbjGLGaK (ORCPT ); Wed, 12 Jul 2023 02:30:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59648 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231797AbjGLG3m (ORCPT ); Wed, 12 Jul 2023 02:29:42 -0400 Received: from mail-lj1-x230.google.com (mail-lj1-x230.google.com [IPv6:2a00:1450:4864:20::230]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 366BC1BC0 for ; Tue, 11 Jul 2023 23:29:27 -0700 (PDT) Received: by mail-lj1-x230.google.com with SMTP id 38308e7fff4ca-2b703c900e3so103016711fa.1 for ; Tue, 11 Jul 2023 23:29:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; t=1689143365; x=1691735365; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=jaFWUw9gKjfe3Ukcvgb1jp0d6hB2t/eCpjIsrYyKWTo=; b=fQehUMh02IXnUqs11ZSMB8+hM0rieOkvTmwEQVLV8VBy3v5+bd5MX5ualkxI3PNskM YmZxZCcv5uoER6qjccIz/NAoGEl+hVnbQpOq7L4mVnC8PUe7QVoEleBQoItSZpn6PlVL jhPthpmFJZOUGriG/kDZ6YRm5qlB2pkrK7IHQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689143365; x=1691735365; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=jaFWUw9gKjfe3Ukcvgb1jp0d6hB2t/eCpjIsrYyKWTo=; b=hGQsnMPMm4CHbPIir8DBpp7PXY2o0T4r6phNZw5z1YQqLNQzs5gk0Ws6nAS4CG+tlc iLjInRVLapyAqAISg/owHH+FCDtOZnUDhTHe3dcPlUwSIGC1IPmtYizreAaeNlL9o0VQ jY2OsLJ3sR6zBaG5zeKd0dUKtcibLETYmwCBqwq/YbRW3nPIXuXLg6lqcvOIFQ8eexfo +wGNKSMS779suJ2E1gXk9kPBdmcGWF+DjwEhgRm7AnCHWw9QEnung9LFkINIxWIAkgAt NpcPYIvVJzfFoqnuFg00nJOV3RXRPyrve1XV756mGZtCopsxaBtJkVDR3rZ+baHfkFLX xqDA== X-Gm-Message-State: ABy/qLZRR2xoi945MuBtdLj4+9/mS/4xorlrA7ttnuFr1giNQZW7b9z6 0aab4cBndBWvNI+GbX8fY5/njPQPWeLqtsqZ4nExlg== X-Google-Smtp-Source: APBJJlFddfjiNpXl3v97FZcNWYumrgBFlgTdW/il742NBF7QIBsu0Cys8eDGmBLoo0Jnlw0299DeFA== X-Received: by 2002:a2e:8699:0:b0:2b6:9ebc:daf8 with SMTP id l25-20020a2e8699000000b002b69ebcdaf8mr15337445lji.31.1689143364867; Tue, 11 Jul 2023 23:29:24 -0700 (PDT) Received: from dario-ThinkPad-T14s-Gen-2i.amarulasolutions.com (host-82-58-49-236.retail.telecomitalia.it. [82.58.49.236]) by smtp.gmail.com with ESMTPSA id d21-20020a170906371500b009890e402a6bsm2065390ejc.221.2023.07.11.23.29.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Jul 2023 23:29:24 -0700 (PDT) From: Dario Binacchi To: linux-kernel@vger.kernel.org Cc: Amarula patchwork , Raphael Gallais-Pou , Philippe Cornu , michael@amarulasolutions.com, Dario Binacchi , Alexandre Torgue , Conor Dooley , Krzysztof Kozlowski , Maxime Coquelin , Rob Herring , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com Subject: [PATCH v6 2/3] ARM: dts: stm32: add pin map for LTDC on stm32f7 Date: Wed, 12 Jul 2023 08:29:17 +0200 Message-Id: <20230712062918.2248573-3-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20230712062918.2248573-1-dario.binacchi@amarulasolutions.com> References: <20230712062918.2248573-1-dario.binacchi@amarulasolutions.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add pin configurations for using LTDC (LCD-tft Display Controller) on stm32f746-disco board. Signed-off-by: Dario Binacchi --- (no changes since v3) Changes in v3: - rename ltdc-pins-a-0 to ltdc-0. arch/arm/boot/dts/st/stm32f7-pinctrl.dtsi | 35 +++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/arch/arm/boot/dts/st/stm32f7-pinctrl.dtsi b/arch/arm/boot/dts/= st/stm32f7-pinctrl.dtsi index 9f65403295ca..36dad40dd0c7 100644 --- a/arch/arm/boot/dts/st/stm32f7-pinctrl.dtsi +++ b/arch/arm/boot/dts/st/stm32f7-pinctrl.dtsi @@ -365,6 +365,41 @@ pins2 { bias-pull-up; }; }; + + + ltdc_pins_a: ltdc-0 { + pins { + pinmux =3D , /* LCD_B0 */ + , /* LCD_B4 */ + , /* LCD_VSYNC */ + , /* LCD_HSYNC */ + , /* LCD_CLK */ + , /* LCD_R0 */ + , /* LCD_R1 */ + , /* LCD_R2 */ + , /* LCD_R3 */ + , /* LCD_R4 */ + , /* LCD_R5 */ + , /* LCD_R6 */ + , /* LCD_R7 */ + , /* LCD_G0 */ + , /* LCD_G1 */ + , /* LCD_G2 */ + , /* LCD_G3 */ + , /* LCD_G4 */ + , /* LCD_B1 */ + , /* LCD_B2 */ + , /* LCD_B3 */ + , /* LCD_G5 */ + , /* LCD_G6 */ + , /* LCD_G7 */ + , /* LCD_B5 */ + , /* LCD_B6 */ + , /* LCD_B7 */ + ; /* LCD_DE */ + slew-rate =3D <2>; + }; + }; }; }; }; --=20 2.32.0 From nobody Sat Feb 7 19:45:56 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 25E2FEB64D9 for ; Wed, 12 Jul 2023 06:30:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231578AbjGLGaN (ORCPT ); Wed, 12 Jul 2023 02:30:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59674 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232137AbjGLG3o (ORCPT ); Wed, 12 Jul 2023 02:29:44 -0400 Received: from mail-ej1-x636.google.com (mail-ej1-x636.google.com [IPv6:2a00:1450:4864:20::636]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 76DFA1BCF for ; Tue, 11 Jul 2023 23:29:28 -0700 (PDT) Received: by mail-ej1-x636.google.com with SMTP id a640c23a62f3a-977e0fbd742so817430866b.2 for ; Tue, 11 Jul 2023 23:29:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; t=1689143366; x=1691735366; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=YGihCxuuhTbmdH2hnVIgkw0LhiTdDuWDElMvl2JmI2g=; b=HEETYVF3Cf6caU2IVpn4bhYyehyMrkZj0FSsQW4T2hk5zhXn/NHB7K/kMvUU7kVxMi pouTOgs9goWm/CoaQeWJ67nbqNE7TlU9yviMsfiurJuptNHqKzXFWQK8Q4Wjj6QGS2QQ eKnB7WC7jXlVkFsetY7luStWJHeEZHeZ3nMl4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689143366; x=1691735366; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=YGihCxuuhTbmdH2hnVIgkw0LhiTdDuWDElMvl2JmI2g=; b=XYJPrSvlBkah6l1c873Re3DcLNZMhfrvjqifxBzPYBh/BGXR70KtApVql/2edvSS/l F6Y+AlZ0kHV03+ni4w03mphLK/rB7o87MrtNXZPCaSAq1biQVjG7jd2cMDnS9RvZjQe6 U5+kZGELvnBZXEoZmkFfZDkOIQbmIH4u0qkFrF54/qNrxosryQLZn9/u/MXI+5x/2VXi 8usXpoCDcnvNYQLZ/tY0p6qaqDw1e5R39WVBuPfVqf9MXQB8LyarJT5abVR5nVmdEhmV YnRI82JI6jZXqfze7r7v2P5zwgKrwF02/1ih/B0MfeFcQGJo/vu1viQ0Cbv+yoSL6cBf RhSw== X-Gm-Message-State: ABy/qLYSUzadePhmvuBdnxyORdwWFg2j9qziIvXvgxPuXbp0oBakO2SA MPsSKC2CRyjHWv5ZHMj+Gyyq8/yja1UfnK336h6bqA== X-Google-Smtp-Source: APBJJlFF3w23VrtUP2Jho/NHDdyX4yhYeXWYdAdFRNtQms0pVry9bxGVi6Yn1q1w77BPLV2osXrV2Q== X-Received: by 2002:a17:906:15:b0:993:f611:7c95 with SMTP id 21-20020a170906001500b00993f6117c95mr12384538eja.39.1689143366256; Tue, 11 Jul 2023 23:29:26 -0700 (PDT) Received: from dario-ThinkPad-T14s-Gen-2i.amarulasolutions.com (host-82-58-49-236.retail.telecomitalia.it. [82.58.49.236]) by smtp.gmail.com with ESMTPSA id d21-20020a170906371500b009890e402a6bsm2065390ejc.221.2023.07.11.23.29.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Jul 2023 23:29:25 -0700 (PDT) From: Dario Binacchi To: linux-kernel@vger.kernel.org Cc: Amarula patchwork , Raphael Gallais-Pou , Philippe Cornu , michael@amarulasolutions.com, Dario Binacchi , Alexandre Torgue , Conor Dooley , Krzysztof Kozlowski , Maxime Coquelin , Rob Herring , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com Subject: [PATCH v6 3/3] ARM: dts: stm32: support display on stm32f746-disco board Date: Wed, 12 Jul 2023 08:29:18 +0200 Message-Id: <20230712062918.2248573-4-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20230712062918.2248573-1-dario.binacchi@amarulasolutions.com> References: <20230712062918.2248573-1-dario.binacchi@amarulasolutions.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add support to Rocktech RK043FN48H display on stm32f746-disco board. Signed-off-by: Dario Binacchi --- Changes in v6: - Remove dma nodes from stm32f746-disco.dts, they are not used by LTDC, so there is no need to enable them. Changes in v5: I am confident that framebuffer sizing is a real requirement for STM32 boar= ds, but I need some time to understand if and how to introduce this functionali= ty. Therefore, I drop the following patches to allow the series to be fully mer= ged: - [4/6] dt-bindings: display: stm32-ltdc: add optional st,fb-bpp property - [5/6] ARM: dts: stm32: set framebuffer bit depth on stm32f746-disco - [6/6] drm/stm: set framebuffer bit depth through DTS property Changes in v4: - Use DTS property instead of module parameter to set the framebuffer bit d= epth. Changes in v3: - drop [4/6] dt-bindings: display: simple: add Rocktech RK043FN48H Applied to https://anongit.freedesktop.org/git/drm/drm-misc.git (drm-misc= -next): https://cgit.freedesktop.org/drm/drm-misc/commit/?id=3Dc42a37a27c777d6396= 1dd634a30f7c887949491a - drop [5/6] drm/panel: simple: add support for Rocktech RK043FN48H panel Applied to https://anongit.freedesktop.org/git/drm/drm-misc.git (drm-misc= -next) https://cgit.freedesktop.org/drm/drm-misc/commit/?id=3D13cdd12a9f934158f4= ec817cf048fcb4384aa9dc arch/arm/boot/dts/st/stm32f746-disco.dts | 43 ++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/arch/arm/boot/dts/st/stm32f746-disco.dts b/arch/arm/boot/dts/s= t/stm32f746-disco.dts index c11616ed5fc6..c00d34179e2e 100644 --- a/arch/arm/boot/dts/st/stm32f746-disco.dts +++ b/arch/arm/boot/dts/st/stm32f746-disco.dts @@ -60,10 +60,41 @@ memory@c0000000 { reg =3D <0xC0000000 0x800000>; }; =20 + reserved-memory { + #address-cells =3D <1>; + #size-cells =3D <1>; + ranges; + + linux,cma { + compatible =3D "shared-dma-pool"; + no-map; + size =3D <0x80000>; + linux,dma-default; + }; + }; + aliases { serial0 =3D &usart1; }; =20 + backlight: backlight { + compatible =3D "gpio-backlight"; + gpios =3D <&gpiok 3 GPIO_ACTIVE_HIGH>; + status =3D "okay"; + }; + + panel_rgb: panel-rgb { + compatible =3D "rocktech,rk043fn48h"; + backlight =3D <&backlight>; + enable-gpios =3D <&gpioi 12 GPIO_ACTIVE_HIGH>; + status =3D "okay"; + port { + panel_in_rgb: endpoint { + remote-endpoint =3D <<dc_out_rgb>; + }; + }; + }; + usbotg_hs_phy: usb-phy { #phy-cells =3D <0>; compatible =3D "usb-nop-xceiv"; @@ -99,6 +130,18 @@ &i2c1 { status =3D "okay"; }; =20 +<dc { + pinctrl-0 =3D <<dc_pins_a>; + pinctrl-names =3D "default"; + status =3D "okay"; + + port { + ltdc_out_rgb: endpoint { + remote-endpoint =3D <&panel_in_rgb>; + }; + }; +}; + &sdio1 { status =3D "okay"; vmmc-supply =3D <&mmc_vcard>; --=20 2.32.0