From: Giulio Benetti <giulio.benetti@micronovasrl.com>
To: Jonathan Liu <net147@gmail.com>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>,
Chen-Yu Tsai <wens@csie.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
dri-devel <dri-devel@lists.freedesktop.org>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] drm/sun4i: fix HSYNC and VSYNC polarity
Date: Thu, 13 Dec 2018 12:42:29 +0100 [thread overview]
Message-ID: <cf5ac5cc-3696-a4fc-ae64-4f0304ab7df3@micronovasrl.com> (raw)
In-Reply-To: <CANwerB2GGLT6fOZk7Q8RXhmiEb7KYnQrx-Rj5AgGn-YPCiMH4g@mail.gmail.com>
Hi Jonathan,
Il 13/12/2018 03:55, Jonathan Liu ha scritto:
>> Can you precisely point me the sources of:
>> - u-boot
>> - kernel
>> - dts
>>
>> you're using?
>>
>> Thanks
>
> U-Boot - git tag v2017.03
> Linux - git tag v4.19.6
> DTS - see device tree changes in
> https://github.com/net147/linux/tree/sun7i-drm-wip but change the
> compatible to "innolux,at070tn92"
With Linux v4.19.6 "innolux,at070tn92" doesn't even work and I suspect
it is because of clock frequency tolerance check for pll setting, so it
gets discarded from drm resulting in not having a crtc.
Anyway I've just re-checked the signals using another display:
"innolux,at043tn24" that has a more rounded clock frequency, so it's
accepted by drm and **signals are correct**.
Unfortunately I don't have your same display here to test, so I can't
help you about that precise panel.
Sorry.
Best regards
--
Giulio Benetti
CTO
MICRONOVA SRL
Sede: Via A. Niedda 3 - 35010 Vigonza (PD)
Tel. 049/8931563 - Fax 049/8931346
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next prev parent reply other threads:[~2018-12-13 11:42 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-15 17:54 Giulio Benetti
2018-02-16 20:18 ` Maxime Ripard
2018-12-06 7:29 ` Jonathan Liu
2018-12-06 11:00 ` Giulio Benetti
2018-12-11 10:49 ` Jonathan Liu
2018-12-11 17:20 ` Giulio Benetti
2018-12-11 17:39 ` Giulio Benetti
2018-12-13 2:55 ` Jonathan Liu
2018-12-13 11:42 ` Giulio Benetti [this message]
2018-12-13 3:08 ` Jonathan Liu
2018-12-13 11:58 ` Giulio Benetti
2018-12-13 12:32 ` Giulio Benetti
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