ChanServ changed the topic of #linux-rockchip to: Rockchip development discussion | IRC log http://irclog.whitequark.org/linux-rockchip | Community GH https://github.com/linux-rockchip | Rockchip GH https://github.com/rockchip-linux | ML https://groups.google.com/group/linux-rockchip
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<Net147> is it possible to support a custom HDMI pixel clock on RK3399? it seems driver only supports pixel clocks of exactly 27, 36, 40, 54, 65, 66, 74.25, 83.5, 108, 106.5, 146.25, 148.5 MHz?
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<urjaman> look into eg. the ChromeOS kernel for how to do more pixel rates, but for totally arbitrary rates you'll still need to add them yourself
<urjaman> (that is, it's still a list that it supports, not an anything goes)
<Net147> urjaman: got a link where in the ChromeOS kernel to look?
<urjaman> nah i haven't looked into the one they use for RK3399 (i did for RK3288 a long time ago, but like even that is so spread out over a bunch of commits that i wouldnt know what to point at)
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<gecko19> Hello All
<gecko19> I am new to this group
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<gecko19> I need some help to build a bootable debian image for the MK903V RK3288 based device
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<robmur01> Net147: see drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c and the various phy PLL tables within
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<gecko19> Hello all, sorry if this is off topic - I wish to get some help to build a debian image for a MK903V dongle . I am willing to pay for support . Is there some place I could get help?
<gecko19> I am doing a product for my employer and we have hit some hotwater at building the bootloader and image for this dongle.
<gecko19> Happy to pay for help.
<gecko19> Or , please do guide me to a place where I could get some help - paid or otherwise.
<stikonas> gecko19: I haven't worked with debian images, but it should be mostly standard steps,
<stikonas> you need to build U-Boot, TF-A, kernel...
<stikonas> I have some general insturctions for rk3399
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<stikonas> gecko19: It's not the same board but steps would be similar https://stikonas.eu/wordpress/2019/09/15/blobless-boot-with-rockpro64/
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<stikonas> although, if U-boot doesn't have support for that board, you might need to write DTS file on you own
<gecko19> stikonas The board does have a dtb file
<gecko19> a dts file
<gecko19> from the manufacturer
<gecko19> Currently I am having issues with uboot , SPL and TPL
<stikonas> well, maybe paste some errors (maybe somebody would have seen something similar)
<stikonas> otherwise it's hard to tell anything
<gecko19> ok
<gecko19> How do I apply the dts file to uboot?
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<stikonas> does manufacturer provide any u-boot?
<stikonas> because I don't see support for mk903v in upstream u-boot
<stikonas> in principle dts files live in arch/arm/dts/
<gecko19> ok
<gecko19> I will try to copy the manufacturers dts file
<gecko19> into that directory and see
<gecko19> stikonas: thanks a lot
<stikonas> you need more
<stikonas> I think there is some stuff in board/rockchip
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<stikonas> and need to hook up everything in build system
<stikonas> gecko19: see commits d9c3417b528902fc16e831c931d56aa6aae73141 and 5764911e6735a63b0255bc45d04dcb21ae8d926a in u-boot for some examples
<gecko19> The MK903V seems to be based on the act8846.dts
<gecko19> stikonas: The uboot can be extracted from the linux image right?
<gecko19> I have that to hand.
<gecko19> Are there companies which would do this sort of work ..
<stikonas> it depends... if it can be extracted...
<stikonas> probably...
<stikonas> but I don't know of any companies doing that
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<gecko19> stikonas: I was asking about someone/some company who will help to bring up the debian boot image
<stikonas> well, personally I don't know any...
<gecko19> stikonas : ok . Thanks
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