On Thu, Feb 27, 2020 at 01:56:56PM +0100, H. Nikolaus Schaller wrote: > Hi Sam, > > > Am 27.02.2020 um 13:23 schrieb Sam Ravnborg <sam@xxxxxxxxxxxx>: > > > > Hi Nikolaus. > > > > On Wed, Feb 26, 2020 at 08:12:52PM +0100, H. Nikolaus Schaller wrote: > >> This patch series adds HDMI output to the jz4780/CI20 board. > >> > >> It is based on taking the old 3.18 vendor kernel and trying > >> to achieve the same with modern DTS setup and new/modified > >> drivers. > >> > >> Unfortunately, in this first RFC, only EDID and creation of > >> /dev/fb0 are working. Also, HDMI hot plugging is detected. > >> > >> But there is no HDMI output signal. So some tiny piece seems > >> to be missing to enable/configure the Synposys HDMI controller. > >> > >> We need help from the community to fix this. > >> > >> Note: device tree bindings are from 2015 and still seem to > >> fit - except they are not in yaml format. > >> > >> Original authors of most patches are > >> * Paul Boddie <paul@xxxxxxxxxxxxx> > >> * Zubair Lutfullah Kakakhel <Zubair.Kakakhel@xxxxxxxxxx> > >> > >> > >> H. Nikolaus Schaller (2): > >> drm: ingenic-drm: add MODULE_DEVICE_TABLE > >> MIPS: CI20: defconfig: configure for DRM_DW_HDMI_JZ4780 > >> > >> Paul Boddie (4): > >> drm: ingenic: add jz4780 Synopsys HDMI driver. > >> pinctrl: ingenic: add hdmi-ddc pin control group > >> MIPS: DTS: jz4780: account for Synopsys HDMI driver and LCD controller > >> MIPS: DTS: CI20: add HDMI setup > >> > >> Zubair Lutfullah Kakakhel (2): > >> dt-bindings: video: Add jz4780-lcd binding > >> dt-bindings: video: Add jz4780-hdmi binding > >> > >> .../bindings/display/ingenic-jz4780-hdmi.txt | 41 ++++++ > >> .../bindings/display/ingenic-jz4780-lcd.txt | 39 ++++++ > > New bindings in DT Schema format please... > > We want to have then in a formal launguage so we can use these > > to verify the DT files. > > Yes, I know. And I fully support the goal. > > But I personally do not have the time to learn the (IMHO brain-twisting) > way the Schema format is working. Especially, I am not interested > in becoming volunteer translator for .txt based schemas developed > by someone else. > > So I hope that someone from the community can and is willing to do > that. > > Or that there will appear good tools soon. E.g. some GUI > based editor tool would be very helpful so that you don't have > to fight with the yaml indentation rules. Like there are XML > and DTD editors. And even HTML is rarely written manually any more. > > IMHO such tools should have been developed and in place *before* > the rule to provide DT schemata is enforced. You mean tools like what is discussed here: https://www.redhat.com/sysadmin/yaml-tips There's also yaml-format in the dtschema repo which will reformat a file to the desired formatting. It is just a wrapper around ruamel yaml library. Rob
