On Thu, Aug 16, 2012 at 03:38:09PM +0530, Leela Krishna Amudala wrote: > Add device tree based discovery support for DRM-FIMD driver. > > Signed-off-by: Leela Krishna Amudala <l.krishna@xxxxxxxxxxx> > --- > Documentation/devicetree/bindings/fb/drm-fimd.txt | 80 +++++++++++++++++ > drivers/gpu/drm/exynos/exynos_drm_fimd.c | 95 ++++++++++++++++++++- > 2 files changed, 173 insertions(+), 2 deletions(-) > create mode 100644 Documentation/devicetree/bindings/fb/drm-fimd.txt > > diff --git a/Documentation/devicetree/bindings/fb/drm-fimd.txt b/Documentation/devicetree/bindings/fb/drm-fimd.txt > new file mode 100644 > index 0000000..8ad8814 > --- /dev/null > +++ b/Documentation/devicetree/bindings/fb/drm-fimd.txt > @@ -0,0 +1,80 @@ > +* Samsung Display Controller using DRM frame work > + > +The display controller is used to transfer image data from memory to an > +external LCD driver interface. It supports various color formats such as > +rgb and yuv. > + > +Required properties: > + - compatible: Should be "samsung,exynos5-drm" for fimd using DRM frame work. > + - reg: physical base address of the controller and length of memory > + mapped region. > + - interrupts: Three interrupts should be specified. The interrupts should be > + specified in the following order. > + - VSYNC interrupt > + - FIFO level interrupt > + - FIMD System Interrupt > + > + - samsung,fimd-display: This property should specify the phandle of the > + display device node which holds the video interface timing with the > + below mentioned properties. > + > + - lcd-htiming: Specifies the horizontal timing for the overlay. The > + horizontal timing includes four parameters in the following order. > + > + - horizontal back porch (in number of lcd clocks) > + - horizontal front porch (in number of lcd clocks) > + - hsync pulse width (in number of lcd clocks) > + - Display panels X resolution. > + > + - lcd-vtiming: Specifies the vertical timing for the overlay. The > + vertical timing includes four parameters in the following order. > + > + - vertical back porch (in number of lcd lines) > + - vertical front porch (in number of lcd lines) > + - vsync pulse width (in number of lcd clocks) > + - Display panels Y resolution. I started an approach to add a common description for displays: https://patchwork.kernel.org/patch/1154751/https://patchwork.kernel.org/patch/1154751/ There are still comments to this approach, but I think rather than inventing SoC specific bindings we should use a common binding. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
