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Wed, 02 Oct 2024 20:09:29 -0700 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by MTKMBS09N2.mediatek.inc (172.21.101.94) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Wed, 2 Oct 2024 20:09:25 -0700 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Thu, 3 Oct 2024 11:09:25 +0800 From: Macpaul Lin To: Chun-Kuang Hu , Philipp Zabel , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Yong Wu , Joerg Roedel , Will Deacon , Robin Murphy , Matthias Brugger , AngeloGioacchino Del Regno , Rohit Agarwal , , , , , , , Alexandre Mergnat CC: Bear Wang , Pablo Sun , Macpaul Lin , Macpaul Lin , Sen Chu , Chris-qj chen , MediaTek Chromebook Upstream , Chen-Yu Tsai , Jitao Shi Subject: [PATCH v6 4/4] dt-bindings: display: mediatek: dpi: correct power-domains property Date: Thu, 3 Oct 2024 11:09:19 +0800 Message-ID: <20241003030919.17980-4-macpaul.lin@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20241003030919.17980-1-macpaul.lin@mediatek.com> References: <20241003030919.17980-1-macpaul.lin@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241002_200934_429090_4166033E X-CRM114-Status: GOOD ( 17.11 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The MediaTek DPI module is typically associated with one of the following multimedia power domains: - POWER_DOMAIN_DISPLAY - POWER_DOMAIN_VDOSYS - POWER_DOMAIN_MM The specific power domain used varies depending on the SoC design. These power domains are shared by multiple devices within the SoC. In most cases, these power domains are enabled by other devices. As a result, the DPI module of legacy SoCs often functions correctly even without explicit configuration. It is recommended to explicitly add the appropriate power domain property to the DPI node in the device tree. Hence drop the compatible checking for specific SoCs. Fixes: 5474d49b2f79 ("dt-bindings: display: mediatek: dpi: Add power domains") Signed-off-by: Macpaul Lin Signed-off-by: Jitao Shi Signed-off-by: Pablo Sun Reviewed-by: Krzysztof Kozlowski --- .../display/mediatek/mediatek,dpi.yaml | 24 ++++++++----------- 1 file changed, 10 insertions(+), 14 deletions(-) Changes for v2: - Because of the corresponding dts fix has been reviewed with a Reviewed-by: tag. [1] https://lore.kernel.org/all/20240925080515.16377-1-macpaul.lin@mediatek.com/ We still need this change to fix the 2 dtbs_check errors. So keeps no change here. Changes for v3: - The origin patch is [2] https://lore.kernel.org/all/20240926111449.9245-2-macpaul.lin@mediatek.com/ - Thanks for Conor's reminding, after MediaTek's internal discussion, This patch v3 is the replacement of [2] v2. Because the DPI module should has a explicit configuration with power domain. - Drop Acked-by: tag since v3 is nearly a new patch for different approach. Changes for v4: - No change. Please help to review it again. Changes for v5: - Add missing Reviewed-by Tag from Krzysztof. Thanks. Changes for v6: - No change. diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml index 3a82aec9021c..497c0eb4ed0b 100644 --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml @@ -63,6 +63,16 @@ properties: - const: sleep power-domains: + description: | + The MediaTek DPI module is typically associated with one of the + following multimedia power domains: + POWER_DOMAIN_DISPLAY + POWER_DOMAIN_VDOSYS + POWER_DOMAIN_MM + The specific power domain used varies depending on the SoC design. + + It is recommended to explicitly add the appropriate power domain + property to the DPI node in the device tree. maxItems: 1 port: @@ -79,20 +89,6 @@ required: - clock-names - port -allOf: - - if: - not: - properties: - compatible: - contains: - enum: - - mediatek,mt6795-dpi - - mediatek,mt8173-dpi - - mediatek,mt8186-dpi - then: - properties: - power-domains: false - additionalProperties: false examples: