From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 78EB3C433E3 for ; Tue, 14 Jul 2020 07:13:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4F1E222226 for ; Tue, 14 Jul 2020 07:13:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594710800; bh=rDhbGvCqBc5qk7qu3M/g+nT1J2rIXk8oam06CO8RgGQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=yfmngiDSGEKahkXOz9AFOV0foqqa5KZsdKowhuP+HgTPd6skGFf+mfvBuq7HxFDSB F4nqeDOboikXv3sKatnUgT5dINBJTcnjBwDbNf46DhRoz0z8Ctlz80mDZ35bCErOwX /9Wde0tbnx8+G9LKVyqbZNkFm6+1phKja/XpVJYI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725788AbgGNHNT (ORCPT ); Tue, 14 Jul 2020 03:13:19 -0400 Received: from mail.kernel.org ([198.145.29.99]:55752 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726789AbgGNHNT (ORCPT ); Tue, 14 Jul 2020 03:13:19 -0400 Received: from wens.tw (mirror2.csie.ntu.edu.tw [140.112.194.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C97342220F; Tue, 14 Jul 2020 07:13:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594710798; bh=rDhbGvCqBc5qk7qu3M/g+nT1J2rIXk8oam06CO8RgGQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PmNE01MnT5VBTE01AE6Q8G5DNRXf0MO1AirTJDxdPVe6c2tx7RjNv1cBhsDqYnB6I y3RjjOdpaIeCu/tSL735RmrgpgggPhx72lysBMK8gG0qciY8P9XLTlgiEDVyYhp5gV RNoBxHB024ZUdJELanZ212tIlW4oVmo115ncM4XE= Received: by wens.tw (Postfix, from userid 1000) id E239A5FA8D; Tue, 14 Jul 2020 15:13:13 +0800 (CST) From: Chen-Yu Tsai To: Maxime Ripard , Rob Herring , Sam Ravnborg , Thierry Reding , David Airlie , Daniel Vetter Cc: Chen-Yu Tsai , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, Siarhei Siamashka Subject: [PATCH 1/5] dt-bindings: display: panel-dpi: Add bits-per-color property Date: Tue, 14 Jul 2020 15:13:01 +0800 Message-Id: <20200714071305.18492-2-wens@kernel.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200714071305.18492-1-wens@kernel.org> References: <20200714071305.18492-1-wens@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Chen-Yu Tsai Some LCD panels do not support 24-bit true color, or 8bits per channel RGB. Many low end ones only support up to 6 bits per channel natively. Add a device tree property to describe the native bit depth of the panel. This is separate from the bus width or format of the connection to the display output. Signed-off-by: Chen-Yu Tsai --- .../devicetree/bindings/display/panel/panel-dpi.yaml | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/display/panel/panel-dpi.yaml b/Documentation/devicetree/bindings/display/panel/panel-dpi.yaml index 0cd74c8dab42..8eb013fb1969 100644 --- a/Documentation/devicetree/bindings/display/panel/panel-dpi.yaml +++ b/Documentation/devicetree/bindings/display/panel/panel-dpi.yaml @@ -26,6 +26,9 @@ properties: height-mm: true label: true panel-timing: true + bits-per-color: + description: + Shall contain an integer describing the number of bits per color. port: true power-supply: true reset-gpios: true @@ -42,6 +45,7 @@ examples: panel { compatible = "osddisplays,osd057T0559-34ts", "panel-dpi"; label = "osddisplay"; + bits-per-color = <8>; power-supply = <&vcc_supply>; backlight = <&backlight>; -- 2.27.0