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liufengwuhen
Explorer
Explorer
752 Views
Registered: ‎02-15-2019

Xilinx DRM KMS framework和frame buffer read、AXI4tovideo out

使用的硬件结构为:FRAME BUFFER READ -> AXI4 TO VIDEO OUT-> ENCODER(virtual)-> display(virtual)。

想使用DRM KMS架构对上述硬件进行初始化,并使用modetest -M xlnx测试DRM是否配置正确。

如果配置DTSI,并测试输出是否正确。

 

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liufengwuhen
Explorer
Explorer
745 Views
Registered: ‎02-15-2019

VTC也添加成功,参考设计应该没有问题。
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liufengwuhen
Explorer
Explorer
713 Views
Registered: ‎02-15-2019

报错信息 [ 7.219508] [drm:xilinx_drm_plane_create] *ERROR* failed to request dma channel "v_frmbuf_rd_0" for plane /xilinx_drm/planes/plane0 (err:-19) [ 7.219531] [drm:xilinx_drm_plane_create_primary] *ERROR* failed to allocate a primary plane [ 7.219544] [drm:xilinx_drm_crtc_create] *ERROR* failed to create a primary plane for crtc
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wjw
Observer
Observer
193 Views
Registered: ‎05-09-2018

请问你最后成功没?dts怎么配置的?我也有类似的需求,尚未找到参考设计。

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