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[80.180.23.204]) by smtp.gmail.com with ESMTPSA id e3-20020a170906248300b0099d02ca4327sm5662066ejb.54.2023.08.14.06.28.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 14 Aug 2023 06:28:54 -0700 (PDT) From: Dario Binacchi To: linux-kernel@vger.kernel.org Cc: Philippe Cornu , michael@amarulasolutions.com, Amarula patchwork , Raphael Gallais-Pou , 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 v8 4/4] ARM: dts: stm32: support display on stm32f746-disco board Date: Mon, 14 Aug 2023 15:28:44 +0200 Message-Id: <20230814132844.113312-5-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230814132844.113312-1-dario.binacchi@amarulasolutions.com> References: <20230814132844.113312-1-dario.binacchi@amarulasolutions.com> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1774215984832361819 X-GMAIL-MSGID: 1774215984832361819 Add support to Rocktech RK043FN48H display on stm32f746-disco board. Signed-off-by: Dario Binacchi Reviewed-by: Raphaël Gallais-Pou --- Changes in v8: - Add the 'power-supply' property to panel-rgb node. - Move backlight and panel-rgb nodes after the vcc-3v3 node. Changes in v7: - Add 'Reviewed-by' tags I forgot in v6. https://lore.kernel.org/linux-arm-kernel/20230629083726.84910-1-dario.binacchi@amarulasolutions.com/T/ - Add 'Reviewed-by' tag I forgot in v6. https://lore.kernel.org/linux-arm-kernel/20230629083726.84910-1-dario.binacchi@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 boards, but I need some time to understand if and how to introduce this functionality. Therefore, I drop the following patches to allow the series to be fully merged: - [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 depth. 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=c42a37a27c777d63961dd634a30f7c887949491a - 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=13cdd12a9f934158f4ec817cf048fcb4384aa9dc arch/arm/boot/dts/st/stm32f746-disco.dts | 44 ++++++++++++++++++++++++ 1 file changed, 44 insertions(+) diff --git a/arch/arm/boot/dts/st/stm32f746-disco.dts b/arch/arm/boot/dts/st/stm32f746-disco.dts index 4e785039ba5a..bf91f6b1c0f3 100644 --- a/arch/arm/boot/dts/st/stm32f746-disco.dts +++ b/arch/arm/boot/dts/st/stm32f746-disco.dts @@ -60,6 +60,19 @@ memory@c0000000 { reg = <0xC0000000 0x800000>; }; + reserved-memory { + #address-cells = <1>; + #size-cells = <1>; + ranges; + + linux,cma { + compatible = "shared-dma-pool"; + no-map; + size = <0x80000>; + linux,dma-default; + }; + }; + aliases { serial0 = &usart1; }; @@ -85,6 +98,25 @@ vcc_3v3: vcc-3v3 { regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; }; + + backlight: backlight { + compatible = "gpio-backlight"; + gpios = <&gpiok 3 GPIO_ACTIVE_HIGH>; + status = "okay"; + }; + + panel_rgb: panel-rgb { + compatible = "rocktech,rk043fn48h"; + power-supply = <&vcc_3v3>; + backlight = <&backlight>; + enable-gpios = <&gpioi 12 GPIO_ACTIVE_HIGH>; + status = "okay"; + port { + panel_in_rgb: endpoint { + remote-endpoint = <<dc_out_rgb>; + }; + }; + }; }; &clk_hse { @@ -99,6 +131,18 @@ &i2c1 { status = "okay"; }; +<dc { + pinctrl-0 = <<dc_pins_a>; + pinctrl-names = "default"; + status = "okay"; + + port { + ltdc_out_rgb: endpoint { + remote-endpoint = <&panel_in_rgb>; + }; + }; +}; + &sdio1 { status = "okay"; vmmc-supply = <&vcc_3v3>;