From nobody Mon Feb 9 00:43:06 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 79124C7EE2E for ; Fri, 9 Jun 2023 06:21:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237812AbjFIGVQ (ORCPT ); Fri, 9 Jun 2023 02:21:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41822 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237347AbjFIGVH (ORCPT ); Fri, 9 Jun 2023 02:21:07 -0400 Received: from mail-ed1-x52b.google.com (mail-ed1-x52b.google.com [IPv6:2a00:1450:4864:20::52b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 29602271D for ; Thu, 8 Jun 2023 23:21:05 -0700 (PDT) Received: by mail-ed1-x52b.google.com with SMTP id 4fb4d7f45d1cf-516a008e495so3094176a12.1 for ; Thu, 08 Jun 2023 23:21:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; t=1686291663; x=1688883663; 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=2jBqOeBntw2+ThpWf4KE8BMuMRq2HYj3RR0u0oHiddc=; b=ZhxX49H7jgfUHEsQNMUk4/a6UbIjuqRJAwYW/LT42aNhof0z6wH4OBGRGgBWA51aek ydi0MJqMstzS4h5jqV+tcI9Ok9QO0ULC9vwBrGAQ3/rrlcCa48S6zHTCXcXwo0mqWnAt 4sVa0oueq6eWCE+ifmpEydDQztHEZ8P9qYdG4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686291663; x=1688883663; 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=2jBqOeBntw2+ThpWf4KE8BMuMRq2HYj3RR0u0oHiddc=; b=PNRqWJqh9Dsq3qL8kFe+a+eMf7025TgQSH5QNMBZ1SDOXs3829MCudGT26eMjwheZg HPnOp33sHIYXVx9JitaGWRaXhjr9yrhAJhIxUPQewsuiTSlWS1lNteUfdX6oe61K+HMN 7hJg8qHH4v7HKkuTDkOf9dl81Kg5Cqsr/yKzLp0uDHx9MzVONy5kbTRfvGDSu2TIV+ED Gv9NMsCN3EUs60fUAvx/ot1l8/2YcZT3Yv/2usB371dQ6/W6C0ZUo4NpLZHEBmwuYTCp bwp1LfFj3nFX2/J7m31FinJQEm44A+5euG7wus333yczosj7AAk4liMB52/OVWrkbpMQ HLmA== X-Gm-Message-State: AC+VfDy5Qed22CPiDpkKzrq9FimWuhQDSCh0ELn3iYNBgsS/DENkZcvY /ZnPGslbJ+A8nsQy8wc+DgLT4+dtciB5fNPMi84iQQ== X-Google-Smtp-Source: ACHHUZ7g6j/eAGApo5rh4URafnlF1N8g8+7/FnNy4oGvFK8B9Rr2e2tuFQhL9N04HORhDFvBXMITLA== X-Received: by 2002:a50:fb8d:0:b0:514:a6a6:facb with SMTP id e13-20020a50fb8d000000b00514a6a6facbmr825875edq.13.1686291663395; Thu, 08 Jun 2023 23:21:03 -0700 (PDT) Received: from dario-ThinkPad-T14s-Gen-2i.homenet.telecomitalia.it (host-95-248-31-20.retail.telecomitalia.it. [95.248.31.20]) by smtp.gmail.com with ESMTPSA id m7-20020aa7d347000000b005149461b1e0sm1380058edr.25.2023.06.08.23.21.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 08 Jun 2023 23:21:02 -0700 (PDT) From: Dario Binacchi To: linux-kernel@vger.kernel.org Cc: michael@amarulasolutions.com, Amarula patchwork , 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 v3 1/4] ARM: dts: stm32: add ltdc support on stm32f746 MCU Date: Fri, 9 Jun 2023 08:20:47 +0200 Message-Id: <20230609062050.2107143-2-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20230609062050.2107143-1-dario.binacchi@amarulasolutions.com> References: <20230609062050.2107143-1-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 Reviewed-by: Rapha=C3=ABl Gallais-Pou --- (no changes since v1) arch/arm/boot/dts/stm32f746.dtsi | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm/boot/dts/stm32f746.dtsi b/arch/arm/boot/dts/stm32f746= .dtsi index dc868e6da40e..9c4ba0b7f239 100644 --- a/arch/arm/boot/dts/stm32f746.dtsi +++ b/arch/arm/boot/dts/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 Mon Feb 9 00:43:06 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 ABE33C7EE25 for ; Fri, 9 Jun 2023 06:21:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237795AbjFIGVN (ORCPT ); Fri, 9 Jun 2023 02:21:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41840 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237629AbjFIGVI (ORCPT ); Fri, 9 Jun 2023 02:21:08 -0400 Received: from mail-lj1-x22d.google.com (mail-lj1-x22d.google.com [IPv6:2a00:1450:4864:20::22d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0750F30D8 for ; Thu, 8 Jun 2023 23:21:07 -0700 (PDT) Received: by mail-lj1-x22d.google.com with SMTP id 38308e7fff4ca-2b203360d93so14954761fa.3 for ; Thu, 08 Jun 2023 23:21:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; t=1686291665; x=1688883665; 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=8+cZsaL4nqe4EkBv4C/rg83ziLwGA0zL1CPKVC/ZIpY=; b=Xh2ITA299ks+uNMVxghk9PCc8hpBoastqUA/GfrKAuG+XVfjPF986qVhj790OK7lBh tl5ddsLugXEw7re+iPYjfrm/tJchi43Fhm9ynnp726s9iKkhYz/FN6zt30vZGgn/gG3X LLSvsr/iSXp/NR0xGCf4l+QJJJ2WaZDEGTpBo= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686291665; x=1688883665; 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=8+cZsaL4nqe4EkBv4C/rg83ziLwGA0zL1CPKVC/ZIpY=; b=K3TWxMSJb4T+6QRDKFDQ6IVBZnAt1q8vMZgZqDp/zu7uWS93tWUTXIuC2Nwfz26u7x R2BZvjApSK0GIY1mOum81rSpTZ+NZaQCVrNKvwTas0FgDmlQnJTa31hAq5w8S3b9BvoI xL2UB2Ay5jI3jHlGAOxCg7R0ElK70LTzNvh8sunqnAXIkwjrxKhTMCxoPRxcJKZdaEOJ G4OPrIcTOkUmMdpMMifMcm/3s4pPa1v1aIG/jou8w106zltKWurcnKStCZ3X0H/1e7+o wAAkJGNsX5q6UJAK1n48oBVGdj8HcOFIIPyYEHmPJmcdpc6DeFymFg/dMSRRlWcghnI4 ygtg== X-Gm-Message-State: AC+VfDyYhdhQKSrUYUS+NaycpdOtLwKYERijJkDDMul+yJ16C7NZrI+i LVzPhBogqk9/gwn+50y9P75JRFQnq81N8FOJhgkD7Q== X-Google-Smtp-Source: ACHHUZ5iaHPCBFL/CFyznNK8XH0UrXLqvcS9ooJKxpt4ywmkPY9MoIJv5N/4NU1OXT725VMpCpBLPA== X-Received: by 2002:a2e:990c:0:b0:2b1:b9b9:20d4 with SMTP id v12-20020a2e990c000000b002b1b9b920d4mr362059lji.5.1686291664880; Thu, 08 Jun 2023 23:21:04 -0700 (PDT) Received: from dario-ThinkPad-T14s-Gen-2i.homenet.telecomitalia.it (host-95-248-31-20.retail.telecomitalia.it. [95.248.31.20]) by smtp.gmail.com with ESMTPSA id m7-20020aa7d347000000b005149461b1e0sm1380058edr.25.2023.06.08.23.21.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 08 Jun 2023 23:21:04 -0700 (PDT) From: Dario Binacchi To: linux-kernel@vger.kernel.org Cc: michael@amarulasolutions.com, Amarula patchwork , 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 v3 2/4] ARM: dts: stm32: add pin map for LTDC on stm32f7 Date: Fri, 9 Jun 2023 08:20:48 +0200 Message-Id: <20230609062050.2107143-3-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20230609062050.2107143-1-dario.binacchi@amarulasolutions.com> References: <20230609062050.2107143-1-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 Reviewed-by: Rapha=C3=ABl Gallais-Pou --- Changes in v3: - rename ltdc-pins-a-0 to ltdc-0. arch/arm/boot/dts/stm32f7-pinctrl.dtsi | 35 ++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/arch/arm/boot/dts/stm32f7-pinctrl.dtsi b/arch/arm/boot/dts/stm= 32f7-pinctrl.dtsi index 9f65403295ca..36dad40dd0c7 100644 --- a/arch/arm/boot/dts/stm32f7-pinctrl.dtsi +++ b/arch/arm/boot/dts/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 Mon Feb 9 00:43:06 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 DA1FEC7EE2E for ; Fri, 9 Jun 2023 06:21:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237860AbjFIGVU (ORCPT ); Fri, 9 Jun 2023 02:21:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41850 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237693AbjFIGVJ (ORCPT ); Fri, 9 Jun 2023 02:21:09 -0400 Received: from mail-ed1-x52c.google.com (mail-ed1-x52c.google.com [IPv6:2a00:1450:4864:20::52c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ECD391FE6 for ; Thu, 8 Jun 2023 23:21:07 -0700 (PDT) Received: by mail-ed1-x52c.google.com with SMTP id 4fb4d7f45d1cf-516a008e495so3094247a12.1 for ; Thu, 08 Jun 2023 23:21:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; t=1686291666; x=1688883666; 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=tlm5X0f1SJIUHEa+Ch7CRBAmlhS5LXsyaOP8GZ1/KKI=; b=Zn2wbcwo21fhOpg5eFi3fFexbvEY7Ul6UQIoI1MeNQzf5cOD48Pb9CySIeYGY3/Jju r7AdVz3fWHqUZfj/p0Ek4p2HnCOJ+jHcldG9ZArs4G454NpdYB8sl6yLnYyTTWgzM56J YRveOMviMIp2hQ/ahVfiS2GmRK+Xlv1GoA9b8= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686291666; x=1688883666; 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=tlm5X0f1SJIUHEa+Ch7CRBAmlhS5LXsyaOP8GZ1/KKI=; b=Nhztwq1OVYlkf6nB9mZHrAlaOR5hOHmrfeyZWf3oSbmcLDTpfTUKSsHF1MCfgpBrxt MZQdADINv+jjQWf5zB/CrIfKAuOahMOYUHNbBKW4LpXXwXo+9nm6Fx+kjeU4sJxO+u2U TVkRL2xeJxwihkFR9AoGre4PRSioS30y86Gh+slp5VPNvxtipR3dU10V6spZ2tlFvk/R huBuJjVqgZJHy33xvLkp+fLIYE74RfvGp7kwyl44/OTV5ITl7+nOr7iRXxNp+KXZcxiv Swy7Kt8QO2dfaeFktO4JvOzNOTOtVKZIng0S/GyXEr+qnyvEGgUoZFaA5Q5I+nKQlyax 1G9A== X-Gm-Message-State: AC+VfDyKdgS+r7WguR3NtulvZvgsw22ZJJxJgYlX1e6kUW5BqQskrUKJ tsTQ4lnZGvOoJlJMbzmtJuImT4dtRm+/UGo7MkAs7w== X-Google-Smtp-Source: ACHHUZ4xW5JNQUR9WpWc3Icd9H1a0H3sV6NT4RZVtX5z+P6Z7QibdOPH+DuK978r1/65E63K0G3P3g== X-Received: by 2002:a05:6402:270e:b0:514:9e81:6185 with SMTP id y14-20020a056402270e00b005149e816185mr4277430edd.16.1686291666238; Thu, 08 Jun 2023 23:21:06 -0700 (PDT) Received: from dario-ThinkPad-T14s-Gen-2i.homenet.telecomitalia.it (host-95-248-31-20.retail.telecomitalia.it. [95.248.31.20]) by smtp.gmail.com with ESMTPSA id m7-20020aa7d347000000b005149461b1e0sm1380058edr.25.2023.06.08.23.21.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 08 Jun 2023 23:21:05 -0700 (PDT) From: Dario Binacchi To: linux-kernel@vger.kernel.org Cc: michael@amarulasolutions.com, Amarula patchwork , 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 v3 3/4] ARM: dts: stm32: support display on stm32f746-disco board Date: Fri, 9 Jun 2023 08:20:49 +0200 Message-Id: <20230609062050.2107143-4-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20230609062050.2107143-1-dario.binacchi@amarulasolutions.com> References: <20230609062050.2107143-1-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 Reviewed-by: Rapha=C3=ABl Gallais-Pou --- (no changes since v1) arch/arm/boot/dts/stm32f746-disco.dts | 51 +++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) diff --git a/arch/arm/boot/dts/stm32f746-disco.dts b/arch/arm/boot/dts/stm3= 2f746-disco.dts index c11616ed5fc6..cda423b6a874 100644 --- a/arch/arm/boot/dts/stm32f746-disco.dts +++ b/arch/arm/boot/dts/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 +130,26 @@ &i2c1 { status =3D "okay"; }; =20 +&dma1 { + status =3D "okay"; +}; + +&dma2 { + status =3D "okay"; +}; + +<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 From nobody Mon Feb 9 00:43:06 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 1AB89C7EE2E for ; Fri, 9 Jun 2023 06:21:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237478AbjFIGV0 (ORCPT ); Fri, 9 Jun 2023 02:21:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41856 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237720AbjFIGVL (ORCPT ); Fri, 9 Jun 2023 02:21:11 -0400 Received: from mail-ed1-x534.google.com (mail-ed1-x534.google.com [IPv6:2a00:1450:4864:20::534]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 656A92119 for ; Thu, 8 Jun 2023 23:21:09 -0700 (PDT) Received: by mail-ed1-x534.google.com with SMTP id 4fb4d7f45d1cf-51492ae66a4so2133471a12.1 for ; Thu, 08 Jun 2023 23:21:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; t=1686291667; x=1688883667; 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=iGNFX6HEdIKRiw8NKvPwhXc8R+GQd9GHBG/7VCCQih4=; b=M/5/NpTFFGCRpQ6Zin9qb9E+Y65G+15U8vBcdXBhKs2ziuqY9ne2OMuK1rKdp1YynY oa6vtGFNCboTCqlpxK6MP3hC0Z8+ZlqlWgCvLTrWhND0vLpGIyWQJmPWuF6cogAOP2js EClF5qAkMaZyWVM7yJWgvLRRy9WQ+t2GO8J3c= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686291667; x=1688883667; 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=iGNFX6HEdIKRiw8NKvPwhXc8R+GQd9GHBG/7VCCQih4=; b=J9tSJFVoorGsisBpJUdlS3g4rZ+DSV24NCNewIKYjfvyqO+Dr89g6tQgz4iDfYdwHz OeeL1nHp6Dq5ZSKxuLfdHGUr0jgdNJACD4vMq/OGeVazN+qaZHQKfE+KSqwBu7D2piXa KK9e3sTa5KvAso9cW2jEXWKjnL2VsSyn4jcd8FVqdVnksQltI/wluK7MJb7jPLaiGIIG 1DKQ1XQzCW7gOvwKDaX7OSTmdJFBICZF7XNn0OVBkUhIezD7v8uncBZixZcAb10RrrBS UhcShy2DJ8kxQShAnBk8F20jn2AOQZbu0uIgXQ1QVdfKouhgGNGW51Tmhbx/mRuOk1F2 FdxA== X-Gm-Message-State: AC+VfDy5K83GOV2OShSl60chIdIWvZpQ+BCP1fRTONxfKYc/ITYndCtG /H7GWw1X/UQTLr2sggJrKiJVhPFtooWz+fzhqkm26w== X-Google-Smtp-Source: ACHHUZ6XFmSe2W3rNoo+VrpWUwTaMcErolR4cjDWNXAD6nl5w7ToPb4VYcUVV/18CrO8h0BLGMsYWg== X-Received: by 2002:aa7:c40b:0:b0:517:6ed9:6629 with SMTP id j11-20020aa7c40b000000b005176ed96629mr416496edq.21.1686291667668; Thu, 08 Jun 2023 23:21:07 -0700 (PDT) Received: from dario-ThinkPad-T14s-Gen-2i.homenet.telecomitalia.it (host-95-248-31-20.retail.telecomitalia.it. [95.248.31.20]) by smtp.gmail.com with ESMTPSA id m7-20020aa7d347000000b005149461b1e0sm1380058edr.25.2023.06.08.23.21.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 08 Jun 2023 23:21:07 -0700 (PDT) From: Dario Binacchi To: linux-kernel@vger.kernel.org Cc: michael@amarulasolutions.com, Amarula patchwork , Dario Binacchi , Alexandre Torgue , Daniel Vetter , David Airlie , Maxime Coquelin , Philippe Cornu , Raphael Gallais-Pou , Yannick Fertre , dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com Subject: [PATCH v3 4/4] drm/stm: add an option to change FB bpp Date: Fri, 9 Jun 2023 08:20:50 +0200 Message-Id: <20230609062050.2107143-5-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20230609062050.2107143-1-dario.binacchi@amarulasolutions.com> References: <20230609062050.2107143-1-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" Boards that use the STM32F{4,7} series have limited amounts of RAM. The added parameter allows users to size, within certain limits, the memory footprint required by the framebuffer. Signed-off-by: Dario Binacchi Acked-by: Philippe Cornu --- 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 drivers/gpu/drm/stm/drv.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/stm/drv.c b/drivers/gpu/drm/stm/drv.c index 422220df7d8c..65be2b442a6a 100644 --- a/drivers/gpu/drm/stm/drv.c +++ b/drivers/gpu/drm/stm/drv.c @@ -30,6 +30,11 @@ #define STM_MAX_FB_WIDTH 2048 #define STM_MAX_FB_HEIGHT 2048 /* same as width to handle orientation */ =20 +static uint stm_bpp =3D 16; + +MODULE_PARM_DESC(bpp, "bits-per-pixel (default: 16)"); +module_param_named(bpp, stm_bpp, uint, 0644); + static const struct drm_mode_config_funcs drv_mode_config_funcs =3D { .fb_create =3D drm_gem_fb_create, .atomic_check =3D drm_atomic_helper_check, @@ -93,6 +98,7 @@ static int drv_load(struct drm_device *ddev) ddev->mode_config.min_height =3D 0; ddev->mode_config.max_width =3D STM_MAX_FB_WIDTH; ddev->mode_config.max_height =3D STM_MAX_FB_HEIGHT; + ddev->mode_config.preferred_depth =3D stm_bpp; ddev->mode_config.funcs =3D &drv_mode_config_funcs; ddev->mode_config.normalize_zpos =3D true; =20 @@ -203,7 +209,7 @@ static int stm_drm_platform_probe(struct platform_devic= e *pdev) if (ret) goto err_put; =20 - drm_fbdev_dma_setup(ddev, 16); + drm_fbdev_dma_setup(ddev, stm_bpp); =20 return 0; =20 --=20 2.32.0