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authorYork Sun <yorksun@freescale.com>2008-04-28 05:15:34 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-28 11:58:40 -0400
commit9b53a9e28a34ed82516191dc46ae018e0e899546 (patch)
tree3e3addb97efae2ecb66435f41da62ae786d26adf /Documentation/powerpc
parent7d345b2253f92804948d66f4db17a49c1932b9a3 (diff)
fbdev: powerpc: driver for Freescale 8610 and 5121 DIU
The following features are supported: plane 0 works as a regular frame buffer, can be accessed by /dev/fb0 plane 1 has two AOIs (area of interest), can be accessed by /dev/fb1 and /dev/fb2 plane 2 has two AOIs, can be accessed by /dev/fb3 and /dev/fb4 Special ioctls support AOIs All /dev/fb* can be used as regular frame buffer devices, except hardware change can only be made through /dev/fb0. Changing pixel clock has no effect on other fbs. Limitation of usage of AOIs: AOIs on the same plane can not be horizonally overlapped AOIs have horizonal order, i.e. AOI0 should be always on top of AOI1 AOIs can not beyond phisical display area. Application should check AOI geometry before changing physical resolution on /dev/fb0 required command line parameters to preallocate memory for frame buffer diufb. optional command line parameters to set modes and monitor video=fslfb:[resolution][,bpp][,monitor] Syntax: Resolution xres x yres-bpp@refresh_rate, the -bpp and @refresh_rate are optional eg, 1024x768, 1280x1024, 1280x1024-32, 1280x1024@60, 1280x1024-32@60, 1280x480-32@60 Bpp bpp=32, bpp=24, or bpp=16 Monitor monitor=0, monitor=1, monitor=2 0 is DVI 1 is Single link LVDS 2 is Double link LVDS Note: switching monitor is a board feather, not DIU feather. MPC8610HPCD has three monitor ports to swtich to. MPC5121ADS doesn't have additional monitor port. So switching monirot port for MPC5121ADS has no effect. If compiled as a module, it takes pamameters mode, bpp, monitor with the same syntax above. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Timur Tabi <timur@freescale.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/powerpc')
-rw-r--r--Documentation/powerpc/booting-without-of.txt33
1 files changed, 33 insertions, 0 deletions
diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt
index cf89e8cfd5bf..1d2a772506cf 100644
--- a/Documentation/powerpc/booting-without-of.txt
+++ b/Documentation/powerpc/booting-without-of.txt
@@ -2836,6 +2836,39 @@ platforms are moved over to use the flattened-device-tree model.
2836 big-endian; 2836 big-endian;
2837 }; 2837 };
2838 2838
2839 r) Freescale Display Interface Unit
2840
2841 The Freescale DIU is a LCD controller, with proper hardware, it can also
2842 drive DVI monitors.
2843
2844 Required properties:
2845 - compatible : should be "fsl-diu".
2846 - reg : should contain at least address and length of the DIU register
2847 set.
2848 - Interrupts : one DIU interrupt should be describe here.
2849
2850 Example (MPC8610HPCD)
2851 display@2c000 {
2852 compatible = "fsl,diu";
2853 reg = <0x2c000 100>;
2854 interrupts = <72 2>;
2855 interrupt-parent = <&mpic>;
2856 };
2857
2858 s) Freescale on board FPGA
2859
2860 This is the memory-mapped registers for on board FPGA.
2861
2862 Required properities:
2863 - compatible : should be "fsl,fpga-pixis".
2864 - reg : should contain the address and the lenght of the FPPGA register
2865 set.
2866
2867 Example (MPC8610HPCD)
2868 board-control@e8000000 {
2869 compatible = "fsl,fpga-pixis";
2870 reg = <0xe8000000 32>;
2871 };
2839 2872
2840VII - Marvell Discovery mv64[345]6x System Controller chips 2873VII - Marvell Discovery mv64[345]6x System Controller chips
2841=========================================================== 2874===========================================================