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[82.52.12.96]) by smtp.gmail.com with ESMTPSA id j15-20020a170906430f00b0099b76c3041csm2491083ejm.7.2023.08.05.02.32.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 05 Aug 2023 02:32:08 -0700 (PDT) From: Dario Binacchi To: linux-kernel@vger.kernel.org Cc: Amarula patchwork , Philippe Cornu , Raphael Gallais-Pou , 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: [RESEND PATCH v7 1/3] ARM: dts: stm32: add ltdc support on stm32f746 MCU Date: Sat, 5 Aug 2023 11:32:00 +0200 Message-Id: <20230805093203.3988194-2-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230805093203.3988194-1-dario.binacchi@amarulasolutions.com> References: <20230805093203.3988194-1-dario.binacchi@amarulasolutions.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add LTDC (Lcd-tft Display Controller) support. Signed-off-by: Dario Binacchi Reviewed-by: Rapha=C3=ABl Gallais-Pou --- Changes in v7: - Add 'Reviewed-by' tag I forgot in v6. https://lore.kernel.org/linux-arm-kernel/20230629083726.84910-1-dario.bin= acchi@amarulasolutions.com/T/ 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 2.34.1 From nobody Thu Sep 11 16:55:50 2025 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 BAABCC41513 for ; Sat, 5 Aug 2023 09:32:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230013AbjHEJcV (ORCPT ); Sat, 5 Aug 2023 05:32:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39232 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229985AbjHEJcN (ORCPT ); Sat, 5 Aug 2023 05:32:13 -0400 Received: from mail-ej1-x643.google.com (mail-ej1-x643.google.com [IPv6:2a00:1450:4864:20::643]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 19DC110FC for ; Sat, 5 Aug 2023 02:32:12 -0700 (PDT) Received: by mail-ej1-x643.google.com with SMTP id a640c23a62f3a-99c136ee106so407848666b.1 for ; Sat, 05 Aug 2023 02:32:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; t=1691227930; x=1691832730; 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=PU0Mm1LqR6Sd23PVyNdW/l5iyuu7GETQ6ileDMCjS3c=; b=ShcmEtOxOcxh8Ra+ZrnyCXiLvGdvy66Qe834X+l4o4ColTafa2s7FQabcHJ7pd41Z8 VGEoZnsZ61WcwOZKPnLPgk8jvK1iLvsPQ1zOjMCoMSstdNV+HLwb17RY/mzywp4uQqdp yKr/gEnh19hjxdorHA0mImP/vuS4UH8QguKvE= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691227930; x=1691832730; 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=PU0Mm1LqR6Sd23PVyNdW/l5iyuu7GETQ6ileDMCjS3c=; b=TQQJI4/ck2rjQ3R/zetSuzAiwCUvHouNMmH7mVkvCuGXxYnkPWYp5vOS+EBkXXh2EP l/LWRaPRAFUHQsgsq+FIPAJzfhgB6irvq9DmttXdVf1IIibmjGRp5fjV8e3bYoDSzQZc 394JhmIr/DsBmbuflaJ8xFWl9/cpGeJGXXcgPD4VGqbAsPhAj96Xpgkn+/dX+u4Rt+0T qyHWbFa4g8wxtSkMozwva21pbldLHH6BVvvPs7Z2EkS7JZ0PJQoEyu4ekUU8/A8Xsqhw 7CRWS7amca3NvuvOk4bSMZPp3NylipnXLaz6O6ZDNA83iwETDdhFU27dfEsmlrfiZBv6 GolA== X-Gm-Message-State: AOJu0YwAfhFmzkWvgpTpVtooRIx/eLD64mSSmSCunSzQndw+NpIRVPXq kGrRqT0Uqdjz3k0QTfQX1F1LxAIxNuQJP6XLBKOkXdgB X-Google-Smtp-Source: AGHT+IFLw4j0bbGPR63vRSuWnCt7hC5dc52zhDYTamFBTkW3DJ+duJwVXTNgwXIKssTfvn9FsO3ZeA== X-Received: by 2002:a17:906:3f1e:b0:975:63f4:4b with SMTP id c30-20020a1709063f1e00b0097563f4004bmr3566000ejj.36.1691227930254; Sat, 05 Aug 2023 02:32:10 -0700 (PDT) Received: from dario-ThinkPad-T14s-Gen-2i.homenet.telecomitalia.it (host-82-52-12-96.retail.telecomitalia.it. [82.52.12.96]) by smtp.gmail.com with ESMTPSA id j15-20020a170906430f00b0099b76c3041csm2491083ejm.7.2023.08.05.02.32.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 05 Aug 2023 02:32:09 -0700 (PDT) From: Dario Binacchi To: linux-kernel@vger.kernel.org Cc: Amarula patchwork , Philippe Cornu , Raphael Gallais-Pou , 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: [RESEND PATCH v7 2/3] ARM: dts: stm32: add pin map for LTDC on stm32f7 Date: Sat, 5 Aug 2023 11:32:01 +0200 Message-Id: <20230805093203.3988194-3-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230805093203.3988194-1-dario.binacchi@amarulasolutions.com> References: <20230805093203.3988194-1-dario.binacchi@amarulasolutions.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add pin configurations for using LTDC (LCD-tft Display Controller) on stm32f746-disco board. Signed-off-by: Dario Binacchi Reviewed-by: Rapha=C3=ABl Gallais-Pou --- Changes in v7: - Add 'Reviewed-by' tag I forgot in v6. https://lore.kernel.org/linux-arm-kernel/20230629083726.84910-1-dario.bin= acchi@amarulasolutions.com/T/ 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 2.34.1 From nobody Thu Sep 11 16:55:50 2025 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 A995CEB64DD for ; Sat, 5 Aug 2023 09:32:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230018AbjHEJcY (ORCPT ); Sat, 5 Aug 2023 05:32:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39268 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229999AbjHEJcQ (ORCPT ); Sat, 5 Aug 2023 05:32:16 -0400 Received: from mail-ed1-x543.google.com (mail-ed1-x543.google.com [IPv6:2a00:1450:4864:20::543]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 806E410CA for ; Sat, 5 Aug 2023 02:32:13 -0700 (PDT) Received: by mail-ed1-x543.google.com with SMTP id 4fb4d7f45d1cf-5227e5d9d96so3687300a12.2 for ; Sat, 05 Aug 2023 02:32:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; t=1691227932; x=1691832732; 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=x4zfk9+w42D4Vl03+U/DigAoB0zXZh0Gh/1uuAJ0hLQ=; b=LTO+hY60zcfHdFcGBdqJvZs63Hhld+Y0TgVkhhqZbg4k0dXhHB9KvM+4praq0OLijR aHcpCyMoqg2wlt4KfQXQAeT53SyHlvHNASbJfq27+RFJnuLxTgAhKn+AErJ/jrFInur+ nN3f9uKhwrM5tUfDI7gcam14wcokpAHO2Rl4Q= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691227932; x=1691832732; 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=x4zfk9+w42D4Vl03+U/DigAoB0zXZh0Gh/1uuAJ0hLQ=; b=L9vRjvFP/fcM8+OyxHX8gX/yITdVLm/502lMbJ8GPtgx6/2pzGGnQ7JmUU4OKYInhr pF0wCulybMiG4H0H+NtQaGZINoMynGqywSoE3f2gE73LWe7i+RM7nW02kn5r6APLxwxv CCgtAoPjG8i0moN4Lg5Pc9JCv0Y1F29KexyvBDJDIVxx8gNWnn9KIPfJHZw4kl+Iw7yW DKgeJHH+TPWABYpyYAgxdD0Kzypng8fjUxODSH4S3y+jrUU3r2m9/uCXu/cWmTYFtbC5 lX5mBTdR1kVx/nz2ZLsOCN6zzz+uIdrp2XiTVNEed6TDLxqjCYGRoYYWZmzAj0n/N0zS HF6w== X-Gm-Message-State: AOJu0Yw+RvM6i/miv3VAv4goPs3j+t3BjT3j52U2A9BgQzVQcX2vCkVG 2rLhnbROiPBoBpXZC67q2kYyAiuYTj8M0/VME/pNmn8A X-Google-Smtp-Source: AGHT+IHgkOpo2eRLFlie1PG6CcKvakaHjbcNDgXW+Ek2vfTiqqqNfAJ6HW5TsnQrLWRuJtvMr8uAUA== X-Received: by 2002:a17:906:319b:b0:99b:499c:ddb6 with SMTP id 27-20020a170906319b00b0099b499cddb6mr3105829ejy.68.1691227931847; Sat, 05 Aug 2023 02:32:11 -0700 (PDT) Received: from dario-ThinkPad-T14s-Gen-2i.homenet.telecomitalia.it (host-82-52-12-96.retail.telecomitalia.it. [82.52.12.96]) by smtp.gmail.com with ESMTPSA id j15-20020a170906430f00b0099b76c3041csm2491083ejm.7.2023.08.05.02.32.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 05 Aug 2023 02:32:11 -0700 (PDT) From: Dario Binacchi To: linux-kernel@vger.kernel.org Cc: Amarula patchwork , Philippe Cornu , Raphael Gallais-Pou , 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: [RESEND PATCH v7 3/3] ARM: dts: stm32: support display on stm32f746-disco board Date: Sat, 5 Aug 2023 11:32:02 +0200 Message-Id: <20230805093203.3988194-4-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230805093203.3988194-1-dario.binacchi@amarulasolutions.com> References: <20230805093203.3988194-1-dario.binacchi@amarulasolutions.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add support to Rocktech RK043FN48H display on stm32f746-disco board. Signed-off-by: Dario Binacchi Reviewed-by: Rapha=C3=ABl Gallais-Pou --- Changes in v7: - Add 'Reviewed-by' tag I forgot in v6. https://lore.kernel.org/linux-arm-kernel/20230629083726.84910-1-dario.bin= acchi@amarulasolutions.com/T/ 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 2.34.1