From patchwork Sat Jul 6 10:23:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hironori KIKUCHI X-Patchwork-Id: 13725813 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E455FC2BD09 for ; Sat, 6 Jul 2024 10:24:26 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6828810E171; Sat, 6 Jul 2024 10:24:26 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="iO+Fm25s"; dkim-atps=neutral Received: from mail-pg1-f169.google.com (mail-pg1-f169.google.com [209.85.215.169]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4064210E154 for ; Sat, 6 Jul 2024 10:24:25 +0000 (UTC) Received: by mail-pg1-f169.google.com with SMTP id 41be03b00d2f7-75c3afd7a50so1332147a12.2 for ; Sat, 06 Jul 2024 03:24:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1720261465; x=1720866265; darn=lists.freedesktop.org; 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=fYJee/mcRebgA7l1n5NmrVNKbMvZcgWZcmI7aolZVm8=; b=iO+Fm25sUn8tv0b3hFD19YFoZlSR+sNUJ5UASA8Kg6Z2yoJz1EqHzwNwRA8ioPyC7b THPA/rMwPOvRvuOtrGTBRNJQx2aWQgc/ZLDha09SAp+ZYFOdsJbt5RkL8lqmO1GTiv9U MmCFKjT39XXSeoo8cNAbFhcHp9vkKh/1YtUEN+bcaFciSJdpLDPqqtM805tUozjKYkG8 uwQQwIKSLSaHdRgZ4Pm+EDta+Y8fFCEbhwFY5z1y7WrMU71hf8wl5YlWR3piFJqCk1da QqXpx214LvZgQRUKq39Bb0DX4cBl1Ys3YHt0rfcW6jdAj9dwUlrmyQMJ4EfeJIcRmPvF N9gw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720261465; x=1720866265; 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=fYJee/mcRebgA7l1n5NmrVNKbMvZcgWZcmI7aolZVm8=; b=J7zps36ATiIdwlxPePw4PCzOlesSolKlV7qoYn7wo3QNWkZYGBocOZzhYXEcLsWKXP lz5I1TBb9HDT6KN8EAF/K/+CEN3G7rzFOlqDW3MEyQjkPAN8wNr0vM6gOR9NLoP/MzA4 8By/I+ZBbB4mDIkTJYFfbNXS5r1gyHtyxLfkFyJdkhSfWd0ZOd4aG/LymbIYpZ6xS+TT E0i1012mhnRWWmi65KfPhrC9x33kLeVtXBHZ0IVJHiAwAjBzpFQr6kHuoVcCJ6DEQ0tX cqyNoo5STwIFuQ3OQv9MrN6YpBtOaBQb1yC5w6fxi+kJZMuwq+71nl0vZjfJQGhD6vky U0WA== X-Forwarded-Encrypted: i=1; AJvYcCXWSZNKe7lK838iZ10+7xu6qefJqer21d0NAlqBjHRU6aQa6K9V9WxW3ZSZKsFbfwTxDuRmq1AbypLnZqrC0sDP2xWQXd1a5loiTavUZEky X-Gm-Message-State: AOJu0YxsjrBxY3Y9L8F3d/vWwHZuuva2Qy53aI79ztGxlV5OBAq8uRBQ VDnCvGtGdiFeulKGVO1U4GXDtfucaqJ7o8RA0pFGlE/YfzFMIhAv X-Google-Smtp-Source: AGHT+IEebQtUDk0CnigbaUezXTxoX65nCAEIxGoc697y/n0gqBCZILJ4/CciYoJMfiPEoGcSa5gX0Q== X-Received: by 2002:a05:6a20:7f8d:b0:1be:ffe4:b2a2 with SMTP id adf61e73a8af0-1c0cc737349mr6960162637.7.1720261464567; Sat, 06 Jul 2024 03:24:24 -0700 (PDT) Received: from noel.flets-west.jp ([2405:6586:4480:a10:167:9818:d778:5c14]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1fb67e04f64sm9126625ad.214.2024.07.06.03.24.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 06 Jul 2024 03:24:24 -0700 (PDT) From: Hironori KIKUCHI To: linux-kernel@vger.kernel.org Cc: Hironori KIKUCHI , Jagan Teki , Neil Armstrong , Jessica Zhang , Sam Ravnborg , David Airlie , Daniel Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org Subject: [PATCH v3 3/5] dt-bindings: display: st7701: Add Anbernic RG28XX panel Date: Sat, 6 Jul 2024 19:23:34 +0900 Message-ID: <20240706102338.99231-4-kikuchan98@gmail.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240706102338.99231-1-kikuchan98@gmail.com> References: <20240706102338.99231-1-kikuchan98@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The RG28XX panel is a display panel of the Anbernic RG28XX, a handheld gaming device from Anbernic. It is 2.8 inches in size (diagonally) with a resolution of 480x640. This panel is driven by a variant of the ST7701 driver IC internally, confirmed by dumping and analyzing its BSP initialization sequence by using a logic analyzer. It is very similar to the existing densitron,dmt028vghmcmi-1a panel, but differs in some unknown register values, so add a new entry for the panel to distinguish them. Additionally, the panel only has an SPI instead of MIPI DSI. So add and modify for SPI as well. Signed-off-by: Hironori KIKUCHI Reviewed-by: Conor Dooley --- .../display/panel/sitronix,st7701.yaml | 69 +++++++++++++++++-- 1 file changed, 64 insertions(+), 5 deletions(-) diff --git a/Documentation/devicetree/bindings/display/panel/sitronix,st7701.yaml b/Documentation/devicetree/bindings/display/panel/sitronix,st7701.yaml index b348f5bf0a9..b07f3eca669 100644 --- a/Documentation/devicetree/bindings/display/panel/sitronix,st7701.yaml +++ b/Documentation/devicetree/bindings/display/panel/sitronix,st7701.yaml @@ -20,21 +20,19 @@ description: | Densitron DMT028VGHMCMI-1A is 480x640, 2-lane MIPI DSI LCD panel which has built-in ST7701 chip. -allOf: - - $ref: panel-common.yaml# - properties: compatible: items: - enum: - anbernic,rg-arc-panel + - anbernic,rg28xx-panel - densitron,dmt028vghmcmi-1a - elida,kd50t048a - techstar,ts8550b - const: sitronix,st7701 reg: - description: DSI virtual channel used by that screen + description: DSI / SPI channel used by that screen maxItems: 1 VCC-supply: @@ -43,6 +41,13 @@ properties: IOVCC-supply: description: I/O system regulator + dc-gpios: + maxItems: 1 + description: + Controller data/command selection (D/CX) in 4-line SPI mode. + If not set, the controller is in 3-line SPI mode. + Disallowed for DSI. + port: true reset-gpios: true rotation: true @@ -57,7 +62,38 @@ required: - port - reset-gpios -additionalProperties: false +allOf: + - $ref: panel-common.yaml# + - if: + properties: + compatible: + contains: + # SPI connected panels + enum: + - anbernic,rg28xx-panel + then: + $ref: /schemas/spi/spi-peripheral-props.yaml# + + - if: + properties: + compatible: + not: + contains: + # DSI or SPI without D/CX pin + enum: + - anbernic,rg-arc-panel + - anbernic,rg28xx-panel + - densitron,dmt028vghmcmi-1a + - elida,kd50t048a + - techstar,ts8550b + then: + required: + - dc-gpios + else: + properties: + dc-gpios: false + +unevaluatedProperties: false examples: - | @@ -82,3 +118,26 @@ examples: }; }; }; + - | + #include + + spi { + #address-cells = <1>; + #size-cells = <0>; + + panel@0 { + compatible = "anbernic,rg28xx-panel", "sitronix,st7701"; + reg = <0>; + spi-max-frequency = <3125000>; + VCC-supply = <®_lcd>; + IOVCC-supply = <®_lcd>; + reset-gpios = <&pio 8 14 GPIO_ACTIVE_HIGH>; /* LCD-RST: PI14 */ + backlight = <&backlight>; + + port { + panel_in_rgb: endpoint { + remote-endpoint = <&tcon_lcd0_out_lcd>; + }; + }; + }; + };