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[209.85.220.41]) by mx.google.com with SMTPS id u14-20020a17090a5e4e00b0023d3d7964desor850312pji.15.2023.03.29.06.18.39 for (Google Transport Security); Wed, 29 Mar 2023 06:18:39 -0700 (PDT) Received-SPF: pass (google.com: domain of jagan@amarulasolutions.com designates 209.85.220.41 as permitted sender) client-ip=209.85.220.41; X-Received: by 2002:a17:90b:1d8e:b0:23f:37b6:48f4 with SMTP id pf14-20020a17090b1d8e00b0023f37b648f4mr20675024pjb.43.1680095918961; Wed, 29 Mar 2023 06:18:38 -0700 (PDT) Received: from localhost.localdomain ([2405:201:c00a:a047:206d:4722:c4fa:e845]) by smtp.gmail.com with ESMTPSA id s16-20020a17090b071000b0023f5c867f82sm1400192pjz.41.2023.03.29.06.18.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Mar 2023 06:18:38 -0700 (PDT) From: Jagan Teki To: Dave Stevenson , Maxime Ripard , Maarten Lankhorst , Thomas Zimmermann , David Airlie , Daniel Vetter , Andrzej Hajda , Neil Armstrong , Robert Foss , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Sam Ravnborg , Rob Herring , Krzysztof Kozlowski Cc: linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, Marek Vasut , linux-amarula , Jagan Teki Subject: [PATCH v7 08/12] ARM: dts: sun8i: a33: Add endpoint@0 to dsi_in_tcon0 Date: Wed, 29 Mar 2023 18:46:14 +0530 Message-Id: <20230329131615.1328366-9-jagan@amarulasolutions.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230329131615.1328366-1-jagan@amarulasolutions.com> References: <20230329131615.1328366-1-jagan@amarulasolutions.com> MIME-Version: 1.0 X-Original-Sender: jagan@amarulasolutions.com X-Original-Authentication-Results: mx.google.com; dkim=pass header.i=@amarulasolutions.com header.s=google header.b=BxNdyUGA; spf=pass (google.com: domain of jagan@amarulasolutions.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=jagan@amarulasolutions.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=amarulasolutions.com Content-Type: text/plain; charset="UTF-8" Precedence: list Mailing-list: list linux-amarula@amarulasolutions.com; contact linux-amarula+owners@amarulasolutions.com List-ID: X-Spam-Checked-In-Group: linux-amarula@amarulasolutions.com X-Google-Group-Id: 476853432473 List-Post: , List-Help: , List-Archive: List-Unsubscribe: , The DSI downstream devices are likely to be Panel, Bridge and I2C-Configured Bridge. It is possible to connect all three devices using upstream OF-graph port or ports node however only Panel and Bridge are possible to connect via child node but not possible to connect I2C-Configured Bridge via child node since I2C-Configure bridges are child of I2C not upstream DSI hosts and it must represent them via port or ports with endpoint linking. Allwinner R33 DSI node already has a port so add endpoint 0 for input tcon so that the downstream DSI devices can use endpoint 1 to connect Panel or Bridge or I2C-Configured Bridge. An example of the I2C-Configured downstream bridge representation is, i2c1 { bridge@1b { compatible = "ti,dlpc3433"; ports { port@0 { reg = <0>; bridge_in_dsi: endpoint { remote-endpoint = <&dsi_out_bridge>; data-lanes = <1 2 3 4>; }; }; port@2 { reg = <2>; bridge_out_dmd: endpoint { remote-endpoint = <&dmd_out_bridge>; }; }; }; }; }; dsi { compatible = "allwinner,sun6i-a31-mipi-dsi"; port { dsi_in_tcon0: endpoint@0 { reg = <0>; remote-endpoint = ; }; dsi_out_bridge: endpoint@1 { reg = <1>; remote-endpoint = <&bridge_in_dsi>; }; }; }; Note that existing device bindings are untouched and still represent the downstream devices via child nodes since the sun6i-mipi-dsi host will migrate to a standardized single helper to lookup for a downstream device via child or OF-graph port or port node. Signed-off-by: Jagan Teki --- Changes for v7: - new patch arch/arm/boot/dts/sun8i-a33.dtsi | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/sun8i-a33.dtsi b/arch/arm/boot/dts/sun8i-a33.dtsi index b3d1bdfb5118..50c2424ec31e 100644 --- a/arch/arm/boot/dts/sun8i-a33.dtsi +++ b/arch/arm/boot/dts/sun8i-a33.dtsi @@ -269,7 +269,11 @@ dsi: dsi@1ca0000 { #size-cells = <0>; port { - dsi_in_tcon0: endpoint { + #address-cells = <1>; + #size-cells = <0>; + + dsi_in_tcon0: endpoint@0 { + reg = <0>; remote-endpoint = <&tcon0_out_dsi>; }; };