From mboxrd@z Thu Jan 1 00:00:00 1970 From: Laurent Pinchart Subject: Re: [PATCH v7 5/8] dt-bindings: display: add i.MX6 MIPI DSI host controller doc Date: Wed, 22 Apr 2020 03:58:32 +0300 Message-ID: <20200422005832.GK5983@pendragon.ideasonboard.com> References: <20200421161610.1501827-1-adrian.ratiu@collabora.com> <20200421161610.1501827-6-adrian.ratiu@collabora.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Return-path: Content-Disposition: inline In-Reply-To: <20200421161610.1501827-6-adrian.ratiu@collabora.com> Sender: linux-kernel-owner@vger.kernel.org To: Adrian Ratiu Cc: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-rockchip@lists.infradead.org, Jernej Skrabec , Heiko Stuebner , Jonas Karlman , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Andrzej Hajda , kernel@collabora.com, linux-stm32@st-md-mailman.stormreply.com, linux-imx@nxp.com, Rob Herring , Neil Armstrong , Fabio Estevam , Adrian Pop , Arnaud Ferraris , Sjoerd Simons , Martyn Welch List-Id: linux-rockchip.vger.kernel.org Hi Adrian, Thank you for the patch. On Tue, Apr 21, 2020 at 07:16:07PM +0300, Adrian Ratiu wrote: > This provides an example DT binding for the MIPI DSI host controller > present on the i.MX6 SoC based on Synopsis DesignWare v1.01 IP. > > Cc: Rob Herring > Cc: Neil Armstrong > Cc: Fabio Estevam > Cc: Laurent Pinchart > Cc: devicetree@vger.kernel.org > Tested-by: Adrian Pop > Tested-by: Arnaud Ferraris > Signed-off-by: Sjoerd Simons > Signed-off-by: Martyn Welch > Signed-off-by: Adrian Ratiu > --- > Changes since v6: > - Added ref to the newly created snps,dw-mipi-dsi.yaml (Laurent) > - Moved *-cells properties outside patternProperties (Laurent) > - Removed the panel port documentation (Laurent) > - Wrapped lines at 80 chars, typo fixes, sort includes (Laurent) > > Changes since v5: > - Fixed missing reg warning (Fabio) > - Updated dt-schema and fixed warnings (Rob) > > Changes since v4: > - Fixed yaml binding to pass `make dt_binding_check dtbs_check` > and addressed received binding feedback (Rob) > > Changes since v3: > - Added commit message (Neil) > - Converted to yaml format (Neil) > - Minor dt node + driver fixes (Rob) > - Added small panel example to the host controller binding > > Changes since v2: > - Fixed commit tags (Emil) > --- > .../display/imx/fsl,mipi-dsi-imx6.yaml | 135 ++++++++++++++++++ > 1 file changed, 135 insertions(+) > create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,mipi-dsi-imx6.yaml > > diff --git a/Documentation/devicetree/bindings/display/imx/fsl,mipi-dsi-imx6.yaml b/Documentation/devicetree/bindings/display/imx/fsl,mipi-dsi-imx6.yaml > new file mode 100644 > index 0000000000000..b73e3ae33a852 > --- /dev/null > +++ b/Documentation/devicetree/bindings/display/imx/fsl,mipi-dsi-imx6.yaml > @@ -0,0 +1,135 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/display/imx/fsl,mipi-dsi-imx6.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Freescale i.MX6 DW MIPI DSI Host Controller > + > +maintainers: > + - Adrian Ratiu > + > +description: | > + The i.MX6 DSI host controller is a Synopsys DesignWare MIPI DSI v1.01 > + IP block with a companion PHY IP. > + > + These DT bindings follow the Synopsys DW MIPI DSI bindings defined in > + Documentation/devicetree/bindings/display/bridge/dw_mipi_dsi.txt with > + the following device-specific properties. > + > +allOf: > + - $ref: ../bridge/snps,dw-mipi-dsi.yaml# > + > +properties: > + '#address-cells': > + const: 1 > + > + '#size-cells': > + const: 0 > + > + compatible: > + items: > + - const: fsl,imx6q-mipi-dsi > + - const: snps,dw-mipi-dsi > + > + reg: > + maxItems: 1 > + > + interrupts: > + maxItems: 1 > + > + clocks: > + items: > + - description: Module Clock > + - description: DSI bus clock > + > + clock-names: > + items: > + - const: ref > + - const: pclk > + > + fsl,gpr: > + description: > + Phandle to the iomuxc-gpr region containing the multiplexer ctrl register. > + $ref: /schemas/types.yaml#/definitions/phandle > + > + ports: > + type: object > + description: | > + A node containing DSI input & output port nodes with endpoint > + definitions as documented in > + Documentation/devicetree/bindings/media/video-interfaces.txt > + Documentation/devicetree/bindings/graph.txt > + properties: > + port@0: > + type: object > + description: > + DSI input port node, connected to the ltdc rgb output port. > + > + port@1: > + type: object > + description: > + RGB output port node, connected to a panel or a bridge input port. Isn't it the other way around, doesn't the bridge take RGB input and output DSI ? And to be precise, it's not about RGB, but about the input being parallel interface (DSI will also carry RGB). I would add required: - port@0 - port@1 > + > +additionalProperties: false > + > +patternProperties: > + "^panel@[0-3]$": > + type: object > + > +required: > + - "#address-cells" > + - "#size-cells" > + - compatible > + - reg > + - interrupts > + - clocks > + - clock-names > + - ports > + > +examples: > + - |+ > + #include > + #include > + #include > + > + dsi: dsi@21e0000 { > + #address-cells = <1>; > + #size-cells = <0>; > + compatible = "fsl,imx6q-mipi-dsi", "snps,dw-mipi-dsi"; > + reg = <0x021e0000 0x4000>; > + interrupts = <0 102 IRQ_TYPE_LEVEL_HIGH>; > + fsl,gpr = <&gpr>; > + clocks = <&clks IMX6QDL_CLK_MIPI_CORE_CFG>, > + <&clks IMX6QDL_CLK_MIPI_IPG>; > + clock-names = "ref", "pclk"; > + > + ports { > + #address-cells = <1>; > + #size-cells = <0>; port@0 is missing. > + port@1 { > + reg = <1>; > + dsi_out: endpoint { > + remote-endpoint = <&panel_in>; > + }; > + }; > + }; > + > + panel@0 { > + compatible = "sharp,ls032b3sx01"; > + reg = <0>; > + reset-gpios = <&gpio6 8 GPIO_ACTIVE_LOW>; > + ports { > + #address-cells = <1>; > + #size-cells = <0>; > + port@0 { > + reg = <0>; > + panel_in: endpoint { > + remote-endpoint = <&dsi_out>; > + }; > + }; > + }; > + }; > + }; > + > +... -- Regards, Laurent Pinchart