Lines Matching +full:zynqmp +full:- +full:dma +full:- +full:1
1 .. SPDX-License-Identifier: GPL-2.0+
4 Xilinx ZynqMP Ultrascale+ DisplayPort Subsystem
7 This subsystem handles DisplayPort video and audio output on the ZynqMP. It
8 supports in-memory framebuffers with the DisplayPort DMA controller
9 (xilinx-dpdma), as well as "live" video and audio from the programmable logic
15 -------
18 though debugfs. The following files in /sys/kernel/debug/dri/X/DP-1/test/
22 Writing a 1 to this file will activate test mode, and writing a 0 will
23 deactivate test mode. Writing a 1 or 0 when the test mode is already
24 active/inactive will re-activate/re-deactivate test mode. When test
34 Enable/disable clock downspreading (spread-spectrum clocking) by
35 writing 1/0
41 Ignore AUX errors when set to 1. Writes to this file take effect
47 retraining requests) when set to 1. Writes to this file take effect
57 Number of lanes to use (1, 2, or 4)
65 symbol-error
69 Output of the PRBS7 (x^7 + x^6 + 1) polynomial
71 80bit-custom
72 A custom 80-bit pattern
95 for prop in /sys/kernel/debug/dri/1/DP-1/test/*; do
96 printf '%-17s ' ${prop##*/}
98 hexdump -C $prop | head -1
106 active 1
109 enhanced 1
110 ignore_aux_errors 1
111 ignore_hpd 1
125 echo 1 > /sys/kernel/debug/dri/1/DP-1/test/enhanced
126 echo tps1 > /sys/kernel/debug/dri/1/DP-1/test/pattern
127 echo 1620000000 > /sys/kernel/debug/dri/1/DP-1/test/rate
128 echo 1 > /sys/kernel/debug/dri/1/DP-1/test/ignore_aux_errors
129 echo 1 > /sys/kernel/debug/dri/1/DP-1/test/ignore_hpd
130 echo 1 > /sys/kernel/debug/dri/1/DP-1/test/active
135 ---------
137 .. kernel-doc:: drivers/gpu/drm/xlnx/zynqmp_disp.h
139 .. kernel-doc:: drivers/gpu/drm/xlnx/zynqmp_dpsub.h
141 .. kernel-doc:: drivers/gpu/drm/xlnx/zynqmp_kms.h
143 .. kernel-doc:: drivers/gpu/drm/xlnx/zynqmp_disp.c
145 .. kernel-doc:: drivers/gpu/drm/xlnx/zynqmp_dp.c
147 .. kernel-doc:: drivers/gpu/drm/xlnx/zynqmp_kms.c