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[211.23.39.77]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-84214b30711sm1418512b3a.16.2026.05.29.03.31.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 May 2026 03:31:56 -0700 (PDT) From: LiangCheng Wang Date: Fri, 29 May 2026 18:31:51 +0800 Subject: [PATCH v3 1/2] dt-bindings: display: mayqueen,pixpaper: add pixpaper-426m Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260529-bar-v3-1-5c2ac1c751ee@gmail.com> References: <20260529-bar-v3-0-5c2ac1c751ee@gmail.com> In-Reply-To: <20260529-bar-v3-0-5c2ac1c751ee@gmail.com> To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Wig Cheng Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, LiangCheng Wang , Conor Dooley X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1780050713; l=2115; i=zaq14760@gmail.com; h=from:subject:message-id; bh=g9m9+6NRdwUwaTmmaAQNYjvkbYeWVUTBiijRvF+0Fis=; b=yce1xB25ZrB2pve/MPW9tT4u0W4HKp43LjwEY+8Tjlc1RJexIjjLBY9jnb7BH2S5Mv6viRWtY WApzVgwHHkoDNMAznw7y/7bg8CVQRNErpMd/Eb1mYxnGlHNCjHJHNO7 X-Developer-Key: i=zaq14760@gmail.com; a=ed25519; pk=5IaLhzvMqasgGPT47dsa8HEpfb0/Dv2BZC0TzSLj6E0= Add the compatible string for the PIXPAPER 4.26 monochrome e-ink panel to the Mayqueen Pixpaper binding. The new panel uses the same SPI and GPIO properties as the existing Pixpaper panel, but it is not software-compatible with it. The 4.26-inch panel requires different panel-specific initialization and update command sequences, so use a distinct compatible string. Document the new compatible string and update the binding description accordingly. Signed-off-by: LiangCheng Wang Acked-by: Conor Dooley --- .../devicetree/bindings/display/mayqueen,pixpaper.yaml | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/Documentation/devicetree/bindings/display/mayqueen,pixpaper.yaml b/Documentation/devicetree/bindings/display/mayqueen,pixpaper.yaml index cd27f8ba5ae1d94660818525b5fa71db98c8acb7..68a6157114604a8308259191e55d1e2d15d76c11 100644 --- a/Documentation/devicetree/bindings/display/mayqueen,pixpaper.yaml +++ b/Documentation/devicetree/bindings/display/mayqueen,pixpaper.yaml @@ -4,22 +4,25 @@ $id: http://devicetree.org/schemas/display/mayqueen,pixpaper.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# -title: Mayqueen Pixpaper e-ink display panel +title: Mayqueen Pixpaper e-ink display panels maintainers: - LiangCheng Wang description: - The Pixpaper is an e-ink display panel controlled via an SPI interface. - The panel has a resolution of 122x250 pixels and requires GPIO pins for - reset, busy, and data/command control. + Mayqueen Pixpaper e-ink display panels are controlled via an SPI interface + and require GPIO pins for reset, busy, and data/command control. Different + panel models use model-specific command sequences selected via their + compatible strings. allOf: - $ref: /schemas/spi/spi-peripheral-props.yaml# properties: compatible: - const: mayqueen,pixpaper + enum: + - mayqueen,pixpaper + - mayqueen,pixpaper-426m reg: maxItems: 1 -- 2.34.1