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07:21
<
jernej >
kilobyte: A64 has HDMI 1.4, which supports max. 4k @ 24Hz
07:21
<
jernej >
more importantly, max. pixel clock is 297 MHz
07:22
<
jernej >
if your timing has same or lower pixel clock, it should work
07:23
<
jernej >
anyway, there is some issue with U-Boot driver, which may break video on Linux
07:23
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07:23
<
jernej >
clock related
07:24
<
jernej >
disable video support in U-Boot and try again
07:24
<
jernej >
I have plans to fix U-Boot, but before that, A64 DT update has to land in U-Boot
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08:20
<
ayaka >
jernej, I am new to sunxi platform, I check its datasheet, but I still have some question about the display engine
08:20
<
ayaka >
Does it support multiple planes overlay
08:20
<
ayaka >
Is it all the DE before H6 without a IOMMU?
08:21
<
jernej >
yes to both
08:21
<
jernej >
and initial H6 DE driver won't support IOMMU
08:21
<
jernej >
since IOMMU driver is not trivial
08:22
<
jernej >
regarding planes overlay, it depends on which output you use on which SoC
08:22
<
jernej >
usually, you can have 4 or 2 planes
08:23
<
jernej >
we talk about mainline, right?
08:23
<
jernej >
I gave up on BSP long time ago
08:24
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08:29
<
ayaka >
jernej, I see, how about the progress on the H6
08:29
<
ayaka >
I know the BSP kernel is not drm at all
08:30
<
jernej >
you can use my v2 patch series for DRM on H6
08:30
<
jernej >
I guess I'll prepare v3 soon
08:31
<
ayaka >
I wonder without the datasheet from allwinner, I check its datasheet, the register of this part is not released
08:31
<
ayaka >
how do you make it support
08:31
<
jernej >
just not in the same datasheet
08:33
<
jernej >
anyway, DE2 driver was made by reading BSP driver code, DE2 datasheet came later
08:33
<
ayaka >
but without the iommu, would the gbm for gpu work?
08:34
<
jernej >
yes, why not? I use gbm version of mali driver on H3
08:34
<
jernej >
btw, there is no gbm version of mali driver for H6
08:35
<
ayaka >
Oh, I didn't notice
08:36
<
ayaka >
I think it is possible to move a mali driver for H6 from the other platform
08:36
<
ayaka >
even the similar platform would work
08:36
<
jernej >
currently, it's deemed too expensive by AW
08:37
<
jernej >
so unless ARM drops price or there is pressure by AW clients, nothing will change
08:37
<
jernej >
I couldn't find any T720 GBM driver
08:37
<
ayaka >
without the gbm mean that wayland won't be supported
08:37
<
jernej >
and others, like T760, don't work
08:37
<
ayaka >
Yes, you need to modify some string in kernel driver
08:38
<
chewitt >
ayaka: moonlighting?
08:38
<
ayaka >
somebody from LibreELEC told me it would work
08:38
<
jernej >
nope, userspace driver check HW registers directly
08:38
<
jernej >
I already checked
08:39
<
ayaka >
chewitt, yep
08:39
<
jernej >
if you find any solution which works, please tell me :)
08:40
<
chewitt >
panfrost will be the solution then
08:40
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08:40
<
jernej >
of course, but afaik, nobody tried it on T720
08:40
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08:41
<
ayaka >
OK, I would check whether there is a similar library I can get
08:41
<
chewitt >
ayaka: you of all people should understand the restrictions on mali blobs
08:41
<
chewitt >
it's either an exact match or it doesn't work
08:42
<
ayaka >
chewitt, Yes, I think we have talk about this topic on the private channel
08:42
<
chewitt >
the only "portable" blob is for utgard; because multiple SoC vendors use exactly the same mali chipset
08:42
<
chewitt >
for midgard everyone seems to use something different
08:43
<
ayaka >
Hard to say
08:43
<
ayaka >
actually all the midgard platform share the same source code
08:44
<
chewitt >
Allwinner have T720, RK have T760 and T860, Amlogic has T820, some OrangePi thing has T830
08:44
<
chewitt >
same kernel driver should work on all, but the userspace blob is unique to each
08:45
<
chewitt >
i'd guess unless compiled to be compatible; but I don't have any knowledge of how the blobs are made
08:48
<
ayaka >
may we find a better place to talk about this gpu topic
08:48
<
chewitt >
back to Slack
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09:03
<
ayaka >
Is there kernel version stable for H6, I would like to use for the future develop
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09:08
<
ayaka >
It would like there are not too much components of H6 would work under the mainline kernel
09:08
<
ayaka >
It looks like most of the components of H6 have been supported under the mainline kernel
09:08
<
ayaka >
but I would is there a version that for example, the mmc works fine
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09:29
<
vtx_linux >
I'm writing bare-metal driver for GMAC for R40 but I have some problems with read anything from MII interface. I'm still reading 0xffff values. I configured PMIC for RGMII PHY with the same method as in u-boot, but it still doesn't work. Any ideas?
09:36
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09:41
<
jernej >
ayaka: mainline kernel should have stable mmc driver for H6
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11:59
<
MoeIcenowy >
montjoie: on the new Pine H64 model B the behavior is a little strange
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11:59
<
MoeIcenowy >
if I make aldo2 always on PHY works okay
11:59
<
MoeIcenowy >
if I make it not always on and bind phy-supply to it
11:59
<
MoeIcenowy >
it doesn't work
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12:11
<
MoeIcenowy >
montjoie: I doubt a delay after regulator is enabled is needed
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12:15
<
MoeIcenowy >
montjoie: sleeping 1s after regulator_enable really helps
12:31
<
ayaka >
jernej, I see thank you
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13:15
<
wens >
MoeIcenowy: isn't there a regulator delay or something property where you can set the required delay?
13:19
<
MoeIcenowy >
wens: see my patchset
13:20
<
MoeIcenowy >
I used regulator-enable-ramp-delay
13:22
<
wens >
ok, that should work
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13:35
<
wens >
btw, does the new model B say it's model B on the board?
13:35
<
MoeIcenowy >
it says PINE_H64_MODEL_B
13:35
<
MoeIcenowy >
2018-10-17
13:36
<
MoeIcenowy >
old model B also says it's model B
13:36
<
MoeIcenowy >
only the date is different
13:36
<
MoeIcenowy >
and the main difference of the two revisions is the color of one LED, and a ]
13:36
<
MoeIcenowy >
s/a ]/the GPIO pinout/
13:37
<
wens >
so right now there are 3 variants?
13:38
<
MoeIcenowy >
finally there's will be two
13:38
<
MoeIcenowy >
all others are ES
13:39
<
MoeIcenowy >
model A will be reworked to follow some changes done when designing model B
13:40
<
MoeIcenowy >
e.g. Ethernet regulator change, LED polarity change
13:40
<
MoeIcenowy >
TL hope they are SW compatible
13:40
<
wens >
could you add a brief note about this to the wiki? would help
13:51
<
MoeIcenowy >
wens: added
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16:36
<
montjoie >
MoeIcenowy: you said "dont test on model A" but what are the consequence of doing it ?
16:38
<
montjoie >
and how to find difference between A and B in DT ?
16:52
<
MoeIcenowy >
final version of model A will be different with current ones
16:52
<
MoeIcenowy >
on powering PHY
16:52
<
MoeIcenowy >
I mean don't test on ES model A
16:52
<
MoeIcenowy >
but currently all model A's are ES
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17:15
<
montjoie >
MoeIcenowy: ES ?
17:16
<
BenG83 >
engineering sample probably ;)
17:17
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17:18
<
montjoie >
I believed we had final version
17:18
<
MoeIcenowy >
montjoie: no
17:19
<
montjoie >
ok so I understand the "only one DT"
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