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([24.21.231.36]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2beb5695f05sm182387205ad.6.2026.05.26.23.23.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 May 2026 23:23:06 -0700 (PDT) From: Igor Reznichenko To: Neil Armstrong , Jessica Zhang , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner , Lad Prabhakar , Manivannan Sadhasivam , "Kael D'Alcamo" , Kever Yang Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Conor Dooley Subject: [PATCH v4 1/2] dt-bindings: display: panel: Add Ilitek ILI9488 panel controller Date: Tue, 26 May 2026 23:22:59 -0700 Message-ID: <20260527062300.88928-2-igor@reznichenko.net> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260527062300.88928-1-igor@reznichenko.net> References: <20260527062300.88928-1-igor@reznichenko.net> 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 Content-Type: text/plain; charset="utf-8" Add binding for the Ilitek ILI9488 panel controller which is found on the FocusLCDs E35GH-I-MW800-CB MIPI DSI panel. Add "focuslcds" to vendor-prefixes.yaml as it's a brandname and a website (https://focuslcds.com/) for Focus Display Solutions, Inc. Reviewed-by: Conor Dooley Signed-off-by: Igor Reznichenko --- .../display/panel/ilitek,ili9488.yaml | 63 +++++++++++++++++++ .../devicetree/bindings/vendor-prefixes.yaml | 2 + 2 files changed, 65 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/panel/ilitek,= ili9488.yaml diff --git a/Documentation/devicetree/bindings/display/panel/ilitek,ili9488= .yaml b/Documentation/devicetree/bindings/display/panel/ilitek,ili9488.yaml new file mode 100644 index 000000000000..ea7449273022 --- /dev/null +++ b/Documentation/devicetree/bindings/display/panel/ilitek,ili9488.yaml @@ -0,0 +1,63 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/panel/ilitek,ili9488.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Ilitek ILI9488 based MIPI-DSI panels + +maintainers: + - Igor Reznichenko + +allOf: + - $ref: panel-common.yaml# + +properties: + compatible: + items: + - enum: + - focuslcds,e35gh-i-mw800cb + - const: ilitek,ili9488 + + reg: + maxItems: 1 + + vci-supply: true + iovcc-supply: true + +required: + - compatible + - reg + - vci-supply + - iovcc-supply + - reset-gpios + - backlight + - port + +unevaluatedProperties: false + +examples: + - | + #include + + dsi { + #address-cells =3D <1>; + #size-cells =3D <0>; + + panel@0 { + compatible =3D "focuslcds,e35gh-i-mw800cb", "ilitek,ili9488"; + reg =3D <0>; + vci-supply =3D <®_vci_panel>; + iovcc-supply =3D <®_iovcc_panel>; + reset-gpios =3D <&gpio3 6 GPIO_ACTIVE_LOW>; + backlight =3D <&pwm_bl>; + + port { + panel_in: endpoint { + remote-endpoint =3D <&dsi_out>; + }; + }; + }; + }; + +... diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Docum= entation/devicetree/bindings/vendor-prefixes.yaml index 28784d66ae7b..5ab758570248 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml @@ -600,6 +600,8 @@ patternProperties: description: Flipkart Inc. "^focaltech,.*": description: FocalTech Systems Co.,Ltd + "^focuslcds,.*": + description: Focus Display Solutions, Inc. "^forlinx,.*": description: Baoding Forlinx Embedded Technology Co., Ltd. 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([24.21.231.36]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2beb5695f05sm182387205ad.6.2026.05.26.23.23.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 May 2026 23:23:07 -0700 (PDT) From: Igor Reznichenko To: Neil Armstrong , Jessica Zhang , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner , Lad Prabhakar , Manivannan Sadhasivam , "Kael D'Alcamo" , Kever Yang Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 2/2] drm/panel: Add Ilitek ILI9488 controller driver Date: Tue, 26 May 2026 23:23:00 -0700 Message-ID: <20260527062300.88928-3-igor@reznichenko.net> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260527062300.88928-1-igor@reznichenko.net> References: <20260527062300.88928-1-igor@reznichenko.net> 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 Content-Type: text/plain; charset="utf-8" Add support for Ilitek ILI9488 DSI controller which is used in FocusLCDs E35GH-I-MW800-CB 320x480 MIPI DSI panel. The mode timing was adjusted after STM32MP157 testing. The previous 14.256 MHz mode worked on AM62P, but was awkward for STM32 DSI/LTDC clock synthesis. Signed-off-by: Igor Reznichenko --- MAINTAINERS | 6 + drivers/gpu/drm/panel/Kconfig | 9 + drivers/gpu/drm/panel/Makefile | 1 + drivers/gpu/drm/panel/panel-ilitek-ili9488.c | 299 +++++++++++++++++++ 4 files changed, 315 insertions(+) create mode 100644 drivers/gpu/drm/panel/panel-ilitek-ili9488.c diff --git a/MAINTAINERS b/MAINTAINERS index 461a3eed6129..a70aacb4f6fb 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8038,6 +8038,12 @@ T: git https://gitlab.freedesktop.org/drm/misc/kerne= l.git F: Documentation/devicetree/bindings/display/ilitek,ili9486.yaml F: drivers/gpu/drm/tiny/ili9486.c =20 +DRM DRIVER FOR ILITEK ILI9488 PANELS +M: Igor Reznichenko +S: Maintained +F: Documentation/devicetree/bindings/display/panel/ilitek,ili9488.yaml +F: drivers/gpu/drm/panel/panel-ilitek-ili9488.c + DRM DRIVER FOR ILITEK ILI9805 PANELS M: Michael Trimarchi S: Maintained diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index d592f4f4b939..03397e652cae 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -260,6 +260,15 @@ config DRM_PANEL_ILITEK_ILI9341 QVGA (240x320) RGB panels. support serial & parallel rgb interface. =20 +config DRM_PANEL_ILITEK_ILI9488 + tristate "Ilitek ILI9488-based panels" + depends on OF + depends on DRM_MIPI_DSI + depends on BACKLIGHT_CLASS_DEVICE + help + Say Y if you want to enable support for panels based on the + Ilitek ILI9488 controller. + config DRM_PANEL_ILITEK_ILI9805 tristate "Ilitek ILI9805-based panels" depends on OF diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index a4291dc3905b..753b18842e7a 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -26,6 +26,7 @@ obj-$(CONFIG_DRM_PANEL_HIMAX_HX8394) +=3D panel-himax-hx8= 394.o obj-$(CONFIG_DRM_PANEL_HYDIS_HV101HD1) +=3D panel-hydis-hv101hd1.o obj-$(CONFIG_DRM_PANEL_ILITEK_IL9322) +=3D panel-ilitek-ili9322.o obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9341) +=3D panel-ilitek-ili9341.o +obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9488) +=3D panel-ilitek-ili9488.o obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9805) +=3D panel-ilitek-ili9805.o obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9806E_CORE) +=3D panel-ilitek-ili9806e-co= re.o obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9806E_DSI) +=3D panel-ilitek-ili9806e-dsi= .o diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9488.c b/drivers/gpu/drm= /panel/panel-ilitek-ili9488.c new file mode 100644 index 000000000000..b2145cbe8c30 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-ilitek-ili9488.c @@ -0,0 +1,299 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include +#include +#include +#include + +#include