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Link: https://www.armchina.com/ Acked-by: Rob Herring (Arm) Signed-off-by: Cunyuan Liu Reviewed-by: Liviu Dudau --- Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Docum= entation/devicetree/bindings/vendor-prefixes.yaml index ee7fd3cfe203..c7ca7f43925b 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml @@ -172,6 +172,8 @@ patternProperties: description: ARM Ltd. "^armadeus,.*": description: ARMadeus Systems SARL + "^armchina,.*": + description: Arm Technology (China) Co., Ltd. "^armsom,.*": description: ArmSoM Technology Co., Ltd. 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Fri, 13 Mar 2026 11:31:20 +0800 (CST) From: Cunyuan Liu To: liviu.dudau@arm.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org Cc: neil.armstrong@linaro.org, heiko@sntech.de, marex@nabladev.com, dev@kael-k.io, prabhakar.mahadev-lad.rj@bp.renesas.com, andre.przywara@arm.com, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, cix-kernel-upstream@cixtech.com, Cunyuan Liu Subject: [PATCH v2 2/3] dt-bindings: display: arm,komeda: add Arm China Linlon D6 compatible Date: Fri, 13 Mar 2026 11:31:18 +0800 Message-ID: <20260313033119.33686-3-cunyuan.liu@cixtech.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260313033119.33686-1-cunyuan.liu@cixtech.com> References: <20260313033119.33686-1-cunyuan.liu@cixtech.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: OSA0EPF000000CC:EE_|TYZPR06MB7334:EE_ X-MS-Office365-Filtering-Correlation-Id: ec260a80-e2a7-4dc9-4084-08de80b0fef7 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700016|1800799024|82310400026|7416014|376014|18002099003|56012099003|22082099003; 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charset="utf-8" Add the Arm China Linlon D6 display controller compatible string. Linlon D6 is register-compatible with Mali-D71, so describe it as a vendor-specific compatible with a fallback to "arm,mali-d71". Reviewed-by: Liviu Dudau Signed-off-by: Cunyuan Liu Acked-by: Krzysztof Kozlowski --- Documentation/devicetree/bindings/display/arm,komeda.yaml | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/display/arm,komeda.yaml b/Do= cumentation/devicetree/bindings/display/arm,komeda.yaml index 3ad3eef89ca8..1afd254b6c2f 100644 --- a/Documentation/devicetree/bindings/display/arm,komeda.yaml +++ b/Documentation/devicetree/bindings/display/arm,komeda.yaml @@ -19,7 +19,9 @@ properties: compatible: oneOf: - items: - - const: arm,mali-d32 + - enum: + - arm,mali-d32 + - armchina,linlon-d6 - const: arm,mali-d71 - const: arm,mali-d71 =20 --=20 2.53.0 From nobody Tue Apr 7 12:55:14 2026 Received: from TYPPR03CU001.outbound.protection.outlook.com (mail-japaneastazon11022114.outbound.protection.outlook.com [52.101.126.114]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3720B346E71; 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charset="utf-8" Arm China Linlon-D6 is register-compatible with the Mali-D71 display pipeline for the purpose of basic modesetting. On Linlon-D6, the PRODUCT_ID register is located at the same offset as on Mali-D71 and reports 0x0060. The IP also exposes the same Komeda top-level block layout expected by the existing d71_identify() probing flow, so we can reuse the D71 function table to bring up the display engine. Reviewed-by: Liviu Dudau Signed-off-by: Cunyuan Liu --- drivers/gpu/drm/arm/display/include/malidp_product.h | 1 + drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c | 1 + drivers/gpu/drm/arm/display/komeda/komeda_drv.c | 1 + 3 files changed, 3 insertions(+) diff --git a/drivers/gpu/drm/arm/display/include/malidp_product.h b/drivers= /gpu/drm/arm/display/include/malidp_product.h index 16a8a2c22c42..6f954bcdf40e 100644 --- a/drivers/gpu/drm/arm/display/include/malidp_product.h +++ b/drivers/gpu/drm/arm/display/include/malidp_product.h @@ -20,6 +20,7 @@ /* Mali-display product IDs */ #define MALIDP_D71_PRODUCT_ID 0x0071 #define MALIDP_D32_PRODUCT_ID 0x0032 +#define LINLONDP_D6_PRODUCT_ID 0x0060 =20 union komeda_config_id { struct { diff --git a/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c b/drivers/gpu= /drm/arm/display/komeda/d71/d71_dev.c index 80973975bfdb..f105e3a2dce2 100644 --- a/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c +++ b/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c @@ -628,6 +628,7 @@ d71_identify(u32 __iomem *reg_base, struct komeda_chip_= info *chip) switch (product_id) { case MALIDP_D71_PRODUCT_ID: case MALIDP_D32_PRODUCT_ID: + case LINLONDP_D6_PRODUCT_ID: funcs =3D &d71_chip_funcs; break; default: diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c b/drivers/gpu/= drm/arm/display/komeda/komeda_drv.c index 358c1512b087..4bb5f250e95e 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c @@ -104,6 +104,7 @@ static int komeda_platform_probe(struct platform_device= *pdev) static const struct of_device_id komeda_of_match[] =3D { { .compatible =3D "arm,mali-d71", .data =3D d71_identify, }, { .compatible =3D "arm,mali-d32", .data =3D d71_identify, }, + { .compatible =3D "armchina,linlon-d6", .data =3D d71_identify, }, {}, }; =20 --=20 2.53.0