From: "Filip Matijević" <filip.matijevic.pz@gmail.com>
To: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sre@kernel.org>,
Tony Lindgren <tony@atomide.com>,
pali.rohar@gmail.com, kernel list <linux-kernel@vger.kernel.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
linux-omap@vger.kernel.org, khilman@kernel.org,
aaro.koskinen@iki.fi, ivo.g.dimitrov.75@gmail.com,
patrikbachan@gmail.com, serge@hallyn.com, abcloriens@gmail.com,
clayton@craftyguy.net, martijn@brixit.nl,
sakari.ailus@linux.intel.com
Subject: Re: 4.13 (and probably all recent) kernels refuse to boot on one Nokia N950, work or another
Date: Fri, 27 Oct 2017 14:58:16 +0200 [thread overview]
Message-ID: <65ad0b63-cfae-f7ac-f916-32fd0c7c540a@gmail.com> (raw)
In-Reply-To: <20171027101905.GA4287@amd>
> If someone knows how to fix the backlight, it would still be useful.
In panel-dsi-cm.c it's set to maximum with
dsicm_dcs_write_1(ddata, DCS_BRIGHTNESS, 0xff);
Sebastian suggested the same but used 100 instead of 0xff, which might
be a bit too low. You can also add msleep(1000) after
dsicm_dcs_write_0(ddata, MIPI_DCS_SET_DISPLAY_ON);
to see if brightness gets overwritten, the whole display goes into sleep
mode, is turned off or similar somewhere down the line.
I'm still unable to make N9 panel to cooperate (despite having "the
right" clocks and able to send image to panel with
MIPI_DCS_WRITE_MEMORY_START/MIPI_DCS_READ_MEMORY_CONTINUE) so I hope
you'll have more luck than me!
Filip
WARNING: multiple messages have this Message-ID (diff)
From: filip.matijevic.pz@gmail.com (Filip Matijević)
To: linux-arm-kernel@lists.infradead.org
Subject: 4.13 (and probably all recent) kernels refuse to boot on one Nokia N950, work or another
Date: Fri, 27 Oct 2017 14:58:16 +0200 [thread overview]
Message-ID: <65ad0b63-cfae-f7ac-f916-32fd0c7c540a@gmail.com> (raw)
In-Reply-To: <20171027101905.GA4287@amd>
> If someone knows how to fix the backlight, it would still be useful.
In panel-dsi-cm.c it's set to maximum with
dsicm_dcs_write_1(ddata, DCS_BRIGHTNESS, 0xff);
Sebastian suggested the same but used 100 instead of 0xff, which might
be a bit too low. You can also add msleep(1000) after
dsicm_dcs_write_0(ddata, MIPI_DCS_SET_DISPLAY_ON);
to see if brightness gets overwritten, the whole display goes into sleep
mode, is turned off or similar somewhere down the line.
I'm still unable to make N9 panel to cooperate (despite having "the
right" clocks and able to send image to panel with
MIPI_DCS_WRITE_MEMORY_START/MIPI_DCS_READ_MEMORY_CONTINUE) so I hope
you'll have more luck than me!
Filip
next prev parent reply other threads:[~2017-10-27 12:58 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-25 20:34 4.13 (and probably all recent) kernels refuse to boot on one Nokia N950, work or another Pavel Machek
2017-10-25 20:34 ` Pavel Machek
2017-10-25 21:28 ` Tony Lindgren
2017-10-25 21:28 ` Tony Lindgren
2017-10-25 21:34 ` Aaro Koskinen
2017-10-25 21:34 ` Aaro Koskinen
2017-10-25 21:34 ` Aaro Koskinen
2017-10-26 7:16 ` Pavel Machek
2017-10-26 7:16 ` Pavel Machek
2017-10-26 7:34 ` Filip Matijević
2017-10-26 7:34 ` Filip Matijević
2017-10-26 8:49 ` Pavel Machek
2017-10-26 8:49 ` Pavel Machek
2017-10-26 9:13 ` Pavel Machek
2017-10-26 9:13 ` Pavel Machek
2017-10-26 9:31 ` Sebastian Reichel
2017-10-26 9:31 ` Sebastian Reichel
2017-10-26 9:57 ` Pavel Machek
2017-10-26 9:57 ` Pavel Machek
2017-10-26 12:01 ` Sebastian Reichel
2017-10-26 12:01 ` Sebastian Reichel
2017-10-26 16:28 ` Pavel Machek
2017-10-26 16:28 ` Pavel Machek
2017-10-27 10:19 ` Pavel Machek
2017-10-27 10:19 ` Pavel Machek
2017-10-27 12:58 ` Filip Matijević [this message]
2017-10-27 12:58 ` Filip Matijević
2017-10-30 19:43 ` n950: mmc fails to work, omap_hsmmc 480b4000.mmc: RX DMA channel request failed ? was " Pavel Machek
2017-10-30 19:43 ` Pavel Machek
2017-10-30 20:02 ` Pavel Machek
2017-10-30 20:02 ` Pavel Machek
2017-10-27 20:27 ` Backlight on Nokia N900 " Pavel Machek
2017-10-27 20:27 ` Pavel Machek
2017-10-27 20:27 ` Pavel Machek
2017-10-30 7:51 ` Pavel Machek
2017-10-30 7:51 ` Pavel Machek
2017-10-26 9:53 ` Pavel Machek
2017-10-26 9:53 ` Pavel Machek
2017-10-26 6:25 ` Filip Matijević
2017-10-26 6:25 ` Filip Matijević
2017-10-26 7:08 ` Pavel Machek
2017-10-26 7:08 ` Pavel Machek
2017-10-26 7:21 ` Pali Rohár
2017-10-26 7:21 ` Pali Rohár
2017-10-26 7:27 ` Pavel Machek
2017-10-26 7:27 ` Pavel Machek
2017-10-26 7:32 ` Pali Rohár
2017-10-26 7:32 ` Pali Rohár
2017-10-26 8:24 ` Pavel Machek
2017-10-26 8:24 ` Pavel Machek
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