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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#222222;background:white;mso-fareast-language:EN-GB">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#222222;background:white;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB">Requesting to please go through below mail that deals with MIPI DSI display panel bringup activity.</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="mso-fareast-language:EN-GB">Jd9365da is a MIPI dsi panel connected to nxp based imx8mm core board directly without any bridge and it’s connected through MIPI DSIM (SAMSUNG) (linux-6.6/drivers/gpu/drm/Bridge/Samsung-dsim.c)
software interface.<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="mso-fareast-language:EN-GB">Prepared Scarthgap yocto BSP images for imx8mm core based NXP board running with linux-6.6 kernel version and booted the board.<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="mso-fareast-language:EN-GB">The below log in the boot sequence confirm panel is attached with dsim host controller. <o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="mso-fareast-language:EN-GB">{{<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="background:yellow;mso-fareast-language:EN-GB">[ 2.568380] samsung-dsim 32e10000.dsi: [drm:samsung_dsim_host_attach] Attached display-8hd-a device // printed from samsung_dsim_host_attach() in drivers/gpu/drm/bridge/samsung-dsim.c</span><span style="mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="mso-fareast-language:EN-GB">}}<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="mso-fareast-language:EN-GB">But <span style="background:yellow">The issue I am facing currently is DRM pipeline is failing to trigger struct drm_bridge_funcs attach() definition i.e Samsung_dsim_attach()
that in turn invokes drm_bridge_attach() and <o:p></o:p></span></span></p>
<p class="MsoNormal" style="background:white"><span style="background:yellow;mso-fareast-language:EN-GB">it helps in triggering Jd9365da drm_panel specific prepare/enable functions subsequently.</span><span style="mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="mso-fareast-language:EN-GB">I attached a debug log added to Samsung-dsim.c file along with a jd9365da panel file (with debug logs) and boot log for reference. I attached jd9365da dts file too for reference<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="mso-fareast-language:EN-GB">I request to please go through attached files and boot logs and please provide input for further debugging. <o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="mso-fareast-language:EN-GB">I attached an arch/arm64/boot/dts/freescale/imx8mm.dtsi file (that contains mipi-dsi entries for Samsung-dsim.c) .<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#500050;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal">Kind Regards<o:p></o:p></p>
<p class="MsoNormal">nelakurthi<o:p></o:p></p>
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