linux-kernel - Re: [PATCH v6 0/17] Add Analogix Core Display Port Driver

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Date:	Tue, 20 Oct 2015 19:40:32 +0800
From:	Yakir Yang <ykk@...k-chips.com>
To:	Javier Martinez Canillas <javier@....samsung.com>,
	Inki Dae <inki.dae@...sung.com>,
	Andrzej Hajda <a.hajda@...sung.com>,
	Joonyoung Shim <jy0922.shim@...sung.com>,
	Seung-Woo Kim <sw0312.kim@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Jingoo Han <jingoohan1@...il.com>,
	Thierry Reding <treding@...dia.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Rob Herring <robh+dt@...nel.org>, joe@...ches.com,
	Heiko Stuebner <heiko@...ech.de>,
	Mark Yao <mark.yao@...k-chips.com>
CC:	Russell King <linux@....linux.org.uk>, djkurtz@...omium.org,
	dianders@...omium.org, Sean Paul <seanpaul@...omium.org>,
	Kukjin Kim <kgene@...nel.org>,
	Kumar Gala <galak@...eaurora.org>, emil.l.velikov@...il.com,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Gustavo Padovan <gustavo.padovan@...labora.co.uk>,
	Kishon Vijay Abraham I <kishon@...com>,
	Pawel Moll <pawel.moll@....com>, ajaynumb@...il.com,
	robherring2@...il.com, Andy Yan <andy.yan@...k-chips.com>,
	dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	linux-rockchip@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v6 0/17] Add Analogix Core Display Port Driver

Hi Javier,

On 10/20/2015 05:48 PM, Javier Martinez Canillas wrote:
> Hello Yakir,
>
> On 10/20/2015 04:10 AM, Yakir Yang wrote:
>> Hi Javier,
>>
>> On 10/19/2015 06:40 PM, Javier Martinez Canillas wrote:
>>> Hello Yakir,
>>>
>>> On 10/10/2015 05:35 PM, Yakir Yang wrote:
>>>> Hi all,
>>>>
>>>>      The Samsung Exynos eDP controller and Rockchip RK3288 eDP controller
>>>> share the same IP, so a lot of parts can be re-used. I split the common
>>>> code into bridge directory, then rk3288 and exynos only need to keep
>>>> some platform code. Cause I can't find the exact IP name of exynos dp
>>>> controller, so I decide to name dp core driver with "analogix" which I
>>>> find in rk3288 eDP TRM :)
>>>>
>>>> But  there are still three light registers setting differents bewteen
>>>> exynos and rk3288.
>>>> 1. RK3288 have five special pll resigters which not indicata in exynos
>>>>      dp controller.
>>>> 2. The address of DP_PHY_PD(dp phy power manager register) are different
>>>>      between rk3288 and exynos.
>>>> 3. Rk3288 and exynos have different setting with AUX_HW_RETRY_CTL(dp debug
>>>>      register).
>>>>
>>>> This series have been well tested on Rockchip platform with eDP panel
>>>> on Jerry Chromebook and Display Port Monitor on RK3288 board and thanks
>>>> to Javier@...sung help me to find a way to install mainline kernel to
>>>> Samsung Exynos Chromebooks, so this series also have been tested on Samsung
>>>> Snow and Peach Pit Chromebooks which borrowed from my friends.
>>>>
>>>> Besides, This version was build on linux-next branch (tag next-20150918), and
>>>> the above test experiments also base on that tag. But I know the latest tag is
>>>> next-20151009, so i do rebase this series again on next-20151009, there were
>>>> little conflicts(exynos_dp removed the suspend/resume).
>>>>
>>>> But after I retest this series on next-20151009, I saw kernel crashed in mmc
>>>> driver(dw_mci_probe failed to get regulator). So i have to disabled the MMC
>>>> module(after all I boot with USB device), and I can see eDP light up normally
>>>> in startup stage, but kernel keep crashed when it try to mount the filesystem.
>>>> I thought this isn't related to dp driver directly, so i choice not to debug
>>>> more depth.
>>>>
>>>> That's to say if someone want to test this series, I suggest you applied this
>>>> series on tag-20150918, just need to fix some light conflicts with the 01 & 02
>>>> patches (or just email me, I can send you directly).
>>>>
>>>> Thanks,
>>> Do you have a branch that I can use to test this series?
>> Thank you for your kind assistance, I have created a tree which checkout from the next-20151019. Surely there were some conflicts to applied this series on that tag, but things still works for me, here is the git address [https://github.com/yakir-Yang/linux/tree/analogix_dp]
>>
> I tested your branch on an Exynos5800 Peach Pi Chromebook and display is
> working on boot. I also tested DPMS and S2R and things are still working
> so for the whole series feel free to add:
>
> Tested-by: Javier Martinez Canillas <javier@....samsung.com>

Thanks a lot    ;)

- Yakir

>> Best regards,
>> - Yakir
>>
> Best regards,


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