Re: [PATCH] ARM: dts: exynos5422-odroid*: remove fimd node

[Thomas Pietrowski]

When I was trying to build kernel 4.3.0 (from linux-stable) with
EXYNOS_IOMMU I was getting an kernel oop on boot, which forced me to
restart, so the kernel was not usable. Sadly I didn't make a paste of
it.
Can try to reproduce this error and send it if you like.

Are you not getting this error when building the kernel with it? (I
also own a Odroid U3+.)

Regards :)

2015-11-11 1:43 GMT+01:00 Krzysztof Kozlowski :
> On 10.11.2015 19:24, Marek Szyprowski wrote:
>> FIMD device is not used at all on Exynos5422-based Odroid XU3-lite and
>> XU4. XU3 board teorethically can support FIMD with DisplayPort
>
> s/teorethically/theoretically/
>
>> connector, but due to hw limitation/design it doesn't work in most
>> cases. It is also not even enabled in XU3 dts file.
>>
>> FIMD node was enabled mainly due to limitation of early Exynos DRM
>> driver, which didn't initialize properly when no FIMD device was
>> available. This node can be now safetly removed from XU3-common dtsi and
>
> s/safetly/safely/
>
>> added layer to Odroid XU3 dts, when Display Port driver gets enabled.
>>
>> Signed-off-by: Marek Szyprowski 
>> ---
>>  arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi | 5 -
>>  1 file changed, 5 deletions(-)
>
> Tested on Odroid XU4 board (HDMI, IOMMU enabled):
>
> Tested-by: Krzysztof Kozlowski 
> Reviewed-by: Krzysztof Kozlowski 
>
>
> No need for respin, the changelog fixes above can be done during applying.
>
>
> BTW, do you know why we don't have EXYNOS_IOMMU enabled in defconfig?
> Any reasons against?
>
> Best regards,
> Krzysztof
>
>
>> diff --git a/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi 
>> b/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi
>> index 1af5bdc..9134217 100644
>> --- a/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi
>> +++ b/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi
>> @@ -67,11 +67,6 @@
>>   <1920>;
>>  };
>>
>> - {
>> - status = "okay";
>> -};
>> -
>> -
>>   {
>>   status = "okay";
>>   hpd-gpio = < 7 GPIO_ACTIVE_HIGH>;
>>
>
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Devicetree gpu entry for Mali400-MP4 embedded in Exynos4412 Prime SoC'S

[Thomas Pietrowski]

Hi,

while using the mainline kernel on my Odroid U3+ for a while, I tried
to make it working with the latest ARM Mali driver supported by my
vendor (Hardkernel), which is r5p0.
I found a pdf document on the net for the Exynos4412 and also took a
look at the dt entry by Tobias Jakobi, who has got a individual dt
implementation for an older (r4p0) mali driver.
But I ended with error messages at driver initialization, so added a
question at community.com [1] to understand the reason and they said
that there is a lot wrong in the dt entry. So I assume that there are
much differences between Exynos4412 and Exynos4412 Prime (?).

Additionally: Is it possible to merge dtb files? Just in case I have
an installation with a kernel + dtb's preinstalled, is it possible to
cat the missing gpu@ entry from a seperate dtb? Or better: Are you
planning to add the missing gpu@ entries? I know Greg Kroah-Hartman
made a statement in the past about the mali driver, but as the device
trees just have to describe the hardware layout it shouldn't be a
problem adding these entries, isn't it?

Regards

[1] https://community.arm.com/thread/9145
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Re: Feedback on hardware support for Odroid U3

[Thomas Pietrowski]

Probably also interesting for you:

~$ zcat /proc/config.gz | grep CONFIG_DRM_EXYNOS
CONFIG_DRM_EXYNOS=m
CONFIG_DRM_EXYNOS_IOMMU=y
CONFIG_DRM_EXYNOS_FIMD=y
CONFIG_DRM_EXYNOS5433_DECON=y
CONFIG_DRM_EXYNOS7_DECON=y
CONFIG_DRM_EXYNOS_DPI=y
CONFIG_DRM_EXYNOS_DSI=y
CONFIG_DRM_EXYNOS_DP=y
CONFIG_DRM_EXYNOS_HDMI=y
CONFIG_DRM_EXYNOS_VIDI=y
CONFIG_DRM_EXYNOS_G2D=y
CONFIG_DRM_EXYNOS_IPP=y
CONFIG_DRM_EXYNOS_FIMC=y
CONFIG_DRM_EXYNOS_ROTATOR=y
CONFIG_DRM_EXYNOS_MIC=y

Regards :)

2015-10-10 10:46 GMT+02:00 Thomas Pietrowski <thopie...@gmail.com>:
> Thanks! The patch for fan support is obviously on a good way to be applied.
>
> However, I just took now 4.2.3 from linux-stable and ran into the same
> problem of this conversation: https://lkml.org/lkml/2015/2/17/434
>
> Is there a way I can help getting this debugged? I could apply this
> patch and test it if you like. Just asking because someone is maybe
> working on a better fix :)
>
> Here a more detailed output of this problem: http://pastebin.com/ity4cEAS
>
> Regards
>
> 2015-08-06 1:31 GMT+02:00 Krzysztof Kozłowski <k.kozlowsk...@gmail.com>:
>> 2015-08-05 22:07 GMT+09:00 Thomas Pietrowski <thopie...@gmail.com>:
>>> Sorry for the long delay. Got now linux-stable 4.2.0-rc5 running here,
>>> but I still miss the fan support.
>>> Searched the web again for the patch and found this on LKML:
>>> https://lkml.org/lkml/2014/12/18/138
>>>
>>> Then looked at the "arm-soc" repository but found this patch nowhere.
>>> Are you planing to add this in future releases?
>>
>> Me? No, I am not planning to work on this. Also I don't have an Odroid
>> U3 with a fan.
>>
>> I think you should ask the author of the patchset.
>>
>> Best regards,
>> Krzysztof
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Re: Feedback on hardware support for Odroid U3

[Thomas Pietrowski]

Thanks! The patch for fan support is obviously on a good way to be applied.

However, I just took now 4.2.3 from linux-stable and ran into the same
problem of this conversation: https://lkml.org/lkml/2015/2/17/434

Is there a way I can help getting this debugged? I could apply this
patch and test it if you like. Just asking because someone is maybe
working on a better fix :)

Here a more detailed output of this problem: http://pastebin.com/ity4cEAS

Regards

2015-08-06 1:31 GMT+02:00 Krzysztof Kozłowski <k.kozlowsk...@gmail.com>:
> 2015-08-05 22:07 GMT+09:00 Thomas Pietrowski <thopie...@gmail.com>:
>> Sorry for the long delay. Got now linux-stable 4.2.0-rc5 running here,
>> but I still miss the fan support.
>> Searched the web again for the patch and found this on LKML:
>> https://lkml.org/lkml/2014/12/18/138
>>
>> Then looked at the "arm-soc" repository but found this patch nowhere.
>> Are you planing to add this in future releases?
>
> Me? No, I am not planning to work on this. Also I don't have an Odroid
> U3 with a fan.
>
> I think you should ask the author of the patchset.
>
> Best regards,
> Krzysztof
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Re: [PATCH RESEND v6 0/3] dts: thermal: Odroid U3: Provide support for Odroid U3 fan

[Thomas Pietrowski]

Will this patchset be released with 4.3.x?

2015-08-11 15:07 GMT+02:00 Lukasz Majewski :
> Presented patches add support for Odroid's U3 optional CPU FAN, which uses PWM
> subsystem for low level control.
>
> This patch is a resend of previously send series:
> https://lkml.org/lkml/2015/3/4/726
>
> The "hwmon" part of this series has been already added to upstream.
> Unfortunately, the DTS files for Odroid U3 device have NOT been added to
> mainline repository.
>
> Those patches were tested at Exynos4412 - Odroid U3 board.
>
> Patches were applied on:
> kernel_samsung -> 
> git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung.git
>
> kernel_samsung/for-next (Linux v4.2-rc1)
> SHA1: 366c21fdd7b1e71a47a6fa969f2e9a014c981aff
>
> Kamil Debski (1):
>   ARM: dts: Add pwm-fan node to the Odroid-U3 board
>
> Lukasz Majewski (2):
>   Documentation: dts: Documentation entry to explain how to use PWM FAN
> as a cooling device
>   ARM: dts: Add properties to use pwm-fan device as a cooling device in
> Odroid U3
>
>  .../devicetree/bindings/hwmon/pwm-fan.txt  | 29 ++-
>  arch/arm/boot/dts/exynos4412-odroidu3.dts  | 43 
> ++
>  2 files changed, 70 insertions(+), 2 deletions(-)
>
> --
> 2.0.0.rc2
>
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Re: Feedback on hardware support for Odroid U3

[Thomas Pietrowski]

Sorry for the long delay. Got now linux-stable 4.2.0-rc5 running here,
but I still miss the fan support.
Searched the web again for the patch and found this on LKML:
https://lkml.org/lkml/2014/12/18/138

Then looked at the arm-soc repository but found this patch nowhere.
Are you planing to add this in future releases?
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Feedback on hardware support for Odroid U3

[Thomas Pietrowski]

Hello again,

first after fixing my booting problems I now get different warnings after boot.
- config: http://pastebin.com/MHUu51pF
- log: http://pastebin.com/9YMgMmFL
- repo: arm-soc
I read the last days that you are still working on the clk drivers, so
as these warnings appear to be related to that you might be interested
on them.

Additionally my CPU fan it running at full RPM all the time. I checked
the temperature just to be sure and it says it's 20°C. Is this problem
known or can I help debugging it?
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