Tool/software:
We are trying to port bolymin lcd for our am5728 based custom board using ti 9.03 linux sdk.
We made the changes in:-
arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi and
edited the drivers/gpu/drm/panel/panel-simple.c as is required for the said LCD panel.
The changes are similar as present in the link
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1009400/am5728-lcd-vout-hsync-vsync-clk-are-not-getting-probed
After compiling the kernel we are able to successfully boot the board with sd card containing the updated zImage and dtbs.
In order to test we ran the modetest utility but we are getting the error as below:-
modetest
trying to open device 'i915'...failed
trying to open device 'amdgpu'...failed
trying to open device 'radeon'...failed
trying to open device 'nouveau'...failed
trying to open device 'vmwgfx'...failed
trying to open device 'omapdrm'...failed
trying to open device 'exynos'...failed
trying to open device 'tilcdc'...failed
trying to open device 'msm'...failed
trying to open device 'sti'...failed
trying to open device 'tegra'...failed
trying to open device 'imx-drm'...failed
trying to open device 'rockchip'...failed
trying to open device 'atmel-hlcdc'...failed
trying to open device 'fsl-dcu-drm'...failed
trying to open device 'vc4'...failed
trying to open device 'virtio_gpu'...failed
trying to open device 'mediatek'...failed
trying to open device 'meson'...failed
trying to open device 'pl111'...failed
trying to open device 'stm'...failed
trying to open device 'sun4i-drm'...failed
trying to open device 'armada-drm'...failed
trying to open device 'komeda'...failed
trying to open device 'imx-dcss'...failed
trying to open device 'mxsfb-drm'...failed
no device found
The following are enabled in the kernel's .config
CONFIG_DRM=y
CONFIG_DRM_OMAP=y
CONFIG_OMAP5_DSS_HDMI=y
CONFIG_DRM_TILCDC=y
CONFIG_DRM_PANEL_LVDS=y
CONFIG_DRM_PANEL_SIMPLE=y
CONFIG_DRM_PANEL_EDP=y
CONFIG_DRM_PANEL_OSD_OSD101T2587_53TS=y
CONFIG_DRM_DISPLAY_CONNECTOR=y
CONFIG_DRM_LVDS_CODEC=y
trying to open device 'omapdrm'...failed
Why is it failing ??
Please help!
Thanks!