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Diffstat (limited to 'Documentation/devicetree/bindings/display/mxsfb.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/display/mxsfb.txt | 108 |
1 files changed, 100 insertions, 8 deletions
diff --git a/Documentation/devicetree/bindings/display/mxsfb.txt b/Documentation/devicetree/bindings/display/mxsfb.txt index 96ec5179c8a0..7040fb0dfa2b 100644 --- a/Documentation/devicetree/bindings/display/mxsfb.txt +++ b/Documentation/devicetree/bindings/display/mxsfb.txt @@ -1,20 +1,69 @@ * Freescale MXS LCD Interface (LCDIF) +New bindings: +============= Required properties: -- compatible: Should be "fsl,<chip>-lcdif". Supported chips include - imx23 and imx28. -- reg: Address and length of the register set for lcdif -- interrupts: Should contain lcdif interrupts -- display : phandle to display node (see below for details) +- compatible: Should be "fsl,imx23-lcdif" for i.MX23. + Should be "fsl,imx28-lcdif" for i.MX28. + Should be "fsl,imx6sx-lcdif" for i.MX6SX. +- reg: Address and length of the register set for LCDIF +- interrupts: Should contain LCDIF interrupt +- clocks: A list of phandle + clock-specifier pairs, one for each + entry in 'clock-names'. +- clock-names: A list of clock names. For MXSFB it should contain: + - "pix" for the LCDIF block clock + - (MX6SX-only) "axi", "disp_axi" for the bus interface clock + +Required sub-nodes: + - port: The connection to an encoder chip. + +Optional properties: +- max-res: an array with a maximum of two integers, representing the + maximum supported resolution, in the form of + <maxX>, <maxY>; if one of the item is <0>, the default + driver-defined maximum resolution for that axis is used + +Example: + + lcdif1: display-controller@2220000 { + compatible = "fsl,imx6sx-lcdif", "fsl,imx28-lcdif"; + reg = <0x02220000 0x4000>; + interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&clks IMX6SX_CLK_LCDIF1_PIX>, + <&clks IMX6SX_CLK_LCDIF_APB>, + <&clks IMX6SX_CLK_DISPLAY_AXI>; + clock-names = "pix", "axi", "disp_axi"; + + port { + parallel_out: endpoint { + remote-endpoint = <&panel_in_parallel>; + }; + }; + }; + +Deprecated bindings: +==================== +Required properties: +- compatible: Should be "fsl,imx23-lcdif" for i.MX23. + Should be "fsl,imx28-lcdif" for i.MX28. +- reg: Address and length of the register set for LCDIF +- interrupts: Should contain LCDIF interrupts +- display: phandle to display node (see below for details) + +Optional properties: +- disp-dev: Display device driver name +- disp-videomode: Display device video mode name; this is used if the panel + supports multiple video modes, in order to chose the right one (see below for + examples) * display node Required properties: -- bits-per-pixel : <16> for RGB565, <32> for RGB888/666. -- bus-width : number of data lines. Could be <8>, <16>, <18> or <24>. +- bits-per-pixel: <16> for RGB565, <32> for RGB888/666. +- bus-width: number of data lines. Could be <8>, <16>, <18> or <24>. Required sub-node: -- display-timings : Refer to binding doc display-timing.txt for details. +- display-timings: Refer to binding doc display-timing.txt for details. Examples: @@ -47,3 +96,46 @@ lcdif@80030000 { }; }; }; + +Examples - optional properties: + +Snippet from imx7d-sdb-mipi-dsi.dts: + +&lcdif { + disp-dev = "mipi_dsi_samsung"; + disp-videomode = "TRUULY-WVGA-SYNC-LOW"; +}; + +&mipi_dsi { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_mipi_dsi_reset>; + lcd_panel = "TRULY-WVGA-TFT3P5581E"; + resets = <&mipi_dsi_reset>; + status = "okay"; +}; + +In the above example, the panel supports 2 video modes (snippet from +drivers/video/fbdev/mxc/mxcfb_hx8363_wvga.c): + +#define ACTIVE_HIGH_NAME "TRUULY-WVGA-SYNC-HIGH" +#define ACTIVE_LOW_NAME "TRUULY-WVGA-SYNC-LOW" + +static struct fb_videomode truly_lcd_modedb[] = { + { + ACTIVE_HIGH_NAME, 50, 480, 854, 41042, + 40, 60, + 3, 3, + 8, 4, + 0x0, + FB_VMODE_NONINTERLACED, + 0, + }, { + ACTIVE_LOW_NAME, 50, 480, 854, 41042, + 40, 60, + 3, 3, + 8, 4, + FB_SYNC_OE_LOW_ACT, + FB_VMODE_NONINTERLACED, + 0, + }, +}; |