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ZedBoard + ALI3 Display + Linux

edurne1893

Hello,

I'm trying to make the 7-inch Zed Touch Display (http://zedboard.org/product/7-inch-zed-touch-display-kit) usable in a Zedboard with Linux. I need to develop my own system because I want to apply PREEMPT_RT patch.

 I have followed the tutorial http://microzed.org/sites/default/files/design/ZedBoard_ALI3_Display_Ubuntu_Tutorial_14_4_02.zip in order to adapt the kernel and configure it so that the board can work properly with the display in a Linux distribution. 

I have found some issues:

1. It suggests to clone the kernel from the repository https://github.com/Xilinx/linux-xlnx.git, tag xilinx-v14.4. This tag DOESN'T CURRENTLY EXIST. 

2. I have cloned then xilinx-v2014.4 (which I suppose is the one the tutorial is referring to). Then, I follow the steps of the tutorial, but when I try to patch the kernel with the patch provided in the tutorial, I obtain quite some errors, and patching is not performed successfully. So I can't create the kernel. 

curso@2502-39:~/linux-xlnx$ make ARCH=arm distclean
curso@2502-39:~/linux-xlnx$ git apply --stat zeddispkit_14_4.patch
 arch/arm/boot/dts/zynq-zed-display-kit.dts         |  374 +++
 drivers/dma/xilinx/xilinx_axivdma.c                |   29 
 drivers/gpu/drm/Kconfig                            |   24 
 drivers/gpu/drm/Makefile                           |    5 
 drivers/gpu/drm/drm_fb_cma_helper.c                |  409 +++
 drivers/gpu/drm/drm_gem_cma_helper.c               |  251 ++
 drivers/gpu/drm/zeddispkit/Kconfig                 |    6 
 drivers/gpu/drm/zeddispkit/Makefile                |    7 
 drivers/gpu/drm/zeddispkit/zeddispkit_drm_crtc.c   |  201 ++
 drivers/gpu/drm/zeddispkit/zeddispkit_drm_crtc.h   |    9 
 drivers/gpu/drm/zeddispkit/zeddispkit_drm_drv.c    |  276 ++
 drivers/gpu/drm/zeddispkit/zeddispkit_drm_drv.h    |  115 +
 .../gpu/drm/zeddispkit/zeddispkit_drm_encoder.c    |  443 +++
 .../gpu/drm/zeddispkit/zeddispkit_drm_encoder.h    |    8 
 include/drm/drm_fb_cma_helper.h                    |   27 
 include/drm/drm_gem_cma_helper.h                   |   44 
 include/drm/init.h                                 |  351 +++
 drivers/i2c/busses/i2c-xiic.c                      |  107 -
 drivers/input/touchscreen/Kconfig                  |   12 
 drivers/input/touchscreen/Makefile                 |    1 
 drivers/input/touchscreen/tmg120_ts.c              |  463 +++
 arch/arm/configs/zynq_zed_dispkit_defconfig        | 2676 ++++++++++++++++++++
 22 files changed, 5765 insertions(+), 73 deletions(-)
curso@2502-39:~/linux-xlnx$ git apply --check zeddispkit_14_4.patch
error: drivers/dma/xilinx/xilinx_axivdma.c: No existe el archivo o el directorio
error: falló el parche: drivers/gpu/drm/Kconfig:54
error: drivers/gpu/drm/Kconfig: el parche no aplica
error: falló el parche: drivers/gpu/drm/Makefile:15
error: drivers/gpu/drm/Makefile: el parche no aplica
error: drivers/gpu/drm/drm_fb_cma_helper.c: ya existe en el directorio de trabajo
error: drivers/gpu/drm/drm_gem_cma_helper.c: ya existe en el directorio de trabajo
error: include/drm/drm_fb_cma_helper.h: ya existe en el directorio de trabajo
error: include/drm/drm_gem_cma_helper.h: ya existe en el directorio de trabajo
error: falló el parche: drivers/i2c/busses/i2c-xiic.c:270
error: drivers/i2c/busses/i2c-xiic.c: el parche no aplica
curso@2502-39:~/linux-xlnx$ git am zeddispkit_14_4.patch
Applying: -- added lcd panel driver for zeddispkit -- added dts file fixed vdma driver added drm helper functions added zed display kit driver
/home/curso/linux-xlnx/.git/rebase-apply/patch:233: trailing whitespace.
/*
/home/curso/linux-xlnx/.git/rebase-apply/patch:261: trailing whitespace.
*/
/home/curso/linux-xlnx/.git/rebase-apply/patch:266: trailing whitespace.
            };
/home/curso/linux-xlnx/.git/rebase-apply/patch:267: trailing whitespace.
 
/home/curso/linux-xlnx/.git/rebase-apply/patch:365: trailing whitespace.
 
error: drivers/dma/xilinx/xilinx_axivdma.c: no existe en el índice
error: falló el parche: drivers/gpu/drm/Kconfig:54
error: drivers/gpu/drm/Kconfig: el parche no aplica
error: falló el parche: drivers/gpu/drm/Makefile:15
error: drivers/gpu/drm/Makefile: el parche no aplica
error: drivers/gpu/drm/drm_fb_cma_helper.c: ya existe en el índice
error: drivers/gpu/drm/drm_gem_cma_helper.c: ya existe en el índice
error: include/drm/drm_fb_cma_helper.h: ya existe en el índice
error: include/drm/drm_gem_cma_helper.h: ya existe en el índice
Patch failed at 0001 -- added lcd panel driver for zeddispkit -- added dts file fixed vdma driver added drm helper functions added zed display kit driver
The copy of the patch that failed is found in:
   /home/curso/linux-xlnx/.git/rebase-apply/patch
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".

 

Besides, I plan to use kernel 4.6 from the Xilinx repo (I'm using Vivado and SDK based on v2016.4 to generate the hardware design), and this tutorial uses version 3.17. Is there any update of the patch for a newer kernel? Could I use the patch provided in the tutorial (zeddispkit_14_4.patch) to patch my newer kernel?

 

Best regards,

Edurne