Hi Hean Loong,
Thank you for the patch.
On Tuesday 01 Aug 2017 10:31:32 Hean Loong, Ong wrote:
From: Ong Hean Loong hean.loong.ong@intel.com
Device tree binding for Intel FPGA Video and Image Processing Suite. The binding involved would be generated from the Altera (Intel) Qsys system. The bindings would set the max width, max height, buts per pixel and memory port width. The device tree binding only supports the Intel Arria10 devkit and its variants. Vendor name retained as altr.
Signed-off-by: Ong, Hean Loong hean.loong.ong@intel.com
.../devicetree/bindings/display/altr,vip-fb2.txt | 39 ++++++++++++++++++ 1 file changed, 39 insertions(+ create mode 100644 Documentation/devicetree/bindings/display/altr,vip-fb2.txt
diff --git a/Documentation/devicetree/bindings/display/altr,vip-fb2.txt b/Documentation/devicetree/bindings/display/altr,vip-fb2.txt new file mode 100644 index 0000000..c4338d9 --- /dev/null +++ b/Documentation/devicetree/bindings/display/altr,vip-fb2.txt @@ -0,0 +1,39 @@ +Intel Video and Image Processing(VIP) Frame Buffer II bindings
+Supported hardware: Arria 10 and above with display port IP
+The hardware associated with this device tree is a SoC FPGA. Where there is an ARM controller +and a FPGA device. The ARM controller would host the Linux OS while the FPGA device runs on its +individual IP firmware.
DT bindings should not be OS-specific, you shouldn't mention Linux here.
In the Intel VIP Frame Buffer II the ARM controller would be +driving data from the Linux OS to the FPGA device programmed with the Frame Buffer II IP +to render pixels to be streamed to the Display Port connector.
+The Frame Buffer II device is a simple frame buffer device. The device contains the display +properties and the bridge or connector register. The output for this device currently +is a dedicated to a single Display Port. Currently the max resolution supported is 1280 x 720 at +60Hz.
+More information the FPGA video IP component can be acquired from +https://www.altera.com/content/dam/altera-www/global/en_US/pdfs/literature/ ug/ug_vip.pdf +
+New bindings: +============= +Required properties: +---------------------------- +- compatible: "altr,vip-frame-buffer-2.0" +- reg: Physical base address and length of the framebuffer controller's
- registers.
+- altr,max-width: The width of the framebuffer in pixels. +- altr,max-height: The height of the framebuffer in pixels.
The properties hint that those are the maximum values, but the descriptions don't match. One of the two needs to be fixed.
+- altr,mem-port-width = the bus width of the avalon master port on the frame reader
+Example: +----------------------------
dp_0_frame_buf: display-controller@100000280 {compatible = "altr,vip-frame-buffer-2.0";reg = <0x00000001 0x00000280 0x00000040>;altr,max-width = <1280>;altr,max-height = <720>;altr,mem-port-width = <128>;};