From Libreelec article on RPI4: "The 4B hardware is HDR capable, but software support has a dependency on the new Linux kernel frameworks merged by Intel devel

From Libreelec article on RPI4: "The 4B hardware is HDR capable, but software support has a dependency on the new Linux kernel frameworks merged by Intel developers (with help from Team LibreELEC/Kodi) in Linux 5.2 and a kernel bump will be needed to use them. Once the initial excitement and activity from the 4B launch calms down, serious work on HDR and transitioning Raspberry Pi over to the new GBM/V4L2 video pipeline can start." Full article: https://libreelec.tv/2019/06/libreelec-9-2-alpha1-rpi4b/ https://libreelec.tv/2019/06/libreelec-9-2-alpha1-rpi4b/