From: Tomi Valkeinen <tomi.valkeinen@nokia.com>
To: "ext Hiremath, Vaibhav" <hvaibhav@ti.com>
Cc: "linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>,
"linux-fbdev@vger.kernel.org" <linux-fbdev@vger.kernel.org>
Subject: RE: [PATCH 01/13] OMAP: DSS2: enable VDDS_DSI when using DPI
Date: Mon, 15 Feb 2010 10:57:34 +0000 [thread overview]
Message-ID: <1266231454.2433.357.camel@tubuntu.research.nokia.com> (raw)
In-Reply-To: <19F8576C6E063C45BE387C64729E7394044A96DE7B@dbde02.ent.ti.com>
On Mon, 2010-02-15 at 11:22 +0100, ext Hiremath, Vaibhav wrote:
> > -----Original Message-----
> > From: linux-omap-owner@vger.kernel.org [mailto:linux-omap-
> > owner@vger.kernel.org] On Behalf Of Tomi Valkeinen
> > Sent: Monday, February 08, 2010 9:26 PM
> > To: linux-omap@vger.kernel.org; linux-fbdev@vger.kernel.org
> > Cc: Tomi Valkeinen
> > Subject: [PATCH 01/13] OMAP: DSS2: enable VDDS_DSI when using DPI
> >
> > It looks like on OMAP3 some DSS pins need VDDS_DSI to function
> > properly.
> >
> > This has not been confirmed from TI, but looking at figure 15-1
> > "Display
> > subsystem highlight" from the TRM, some data pins come near the DSI
> > and SDI
> > blocks. This is not very hard evidence, but the fact remains that
> > with the
> > power on, pixels are ok, and with the power off, pixels are not ok.
> >
> [Hiremath, Vaibhav] Tomi, sorry for delayed response. As usual stuck with some other issues. Below are some quick comments -
>
> I am not regulator expert, but as per my finding I believe it is nothing to do with pins position closure to each other. The actual root cause is TWL4030 Ownership bit. Please refer to the below mail-chain -
>
> http://marc.info/?l=linux-omap&m\x126045146600334&w=2
But why is there a dependency on a regulator, if it has nothing to do
with the pins? Why is vdds_dsi/vdds_sdi needed to get all pixels
through?
Tomi
next prev parent reply other threads:[~2010-02-15 10:57 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-08 15:55 [PATCH 00/13] OMAP DSS2 patches Tomi Valkeinen
2010-02-08 15:56 ` [PATCH 01/13] OMAP: DSS2: enable VDDS_DSI when using DPI Tomi Valkeinen
2010-02-08 15:56 ` [PATCH 02/13] OMAP: 3430SDP: remove vdvi regulator Tomi Valkeinen
2010-02-08 15:56 ` [PATCH 03/13] OMAP: DSS: Taal: fix error returns in taal_probe() Tomi Valkeinen
2010-02-08 15:56 ` [PATCH 04/13] OMAP: DSS2: OMAPFB: implement OMAPFB_RESERVE_BUFFER Tomi Valkeinen
2010-02-08 15:56 ` [PATCH 05/13] OMAP: DSS2: OMAPFB: implement OMAPFB_GET_DISPLAY_INFO Tomi Valkeinen
2010-02-08 15:56 ` [PATCH 06/13] OMAP: DSS2: fix irq-stats compilation Tomi Valkeinen
2010-02-08 15:56 ` [PATCH 07/13] OMAP: DSS2: OMAPFB: Add omapfb_update_window prototype Tomi Valkeinen
2010-02-08 15:56 ` [PATCH 08/13] OMAP: DSS2: improve DSS clk src selection Tomi Valkeinen
2010-02-08 15:56 ` [PATCH 09/13] OMAP: DSS2: DSI: add dsi_bus_is_locked() Tomi Valkeinen
2010-02-08 15:56 ` [PATCH 10/13] OMAP: DSS2: DSI: add helpers for DCS read/write Tomi Valkeinen
2010-02-08 15:56 ` [PATCH 11/13] OMAP: DSS2: DSI: export dsi_vc_enable_hs() Tomi Valkeinen
2010-02-08 15:56 ` [PATCH 12/13] OMAP: DSS2: DSI: configure all DSI VCs Tomi Valkeinen
2010-02-08 15:56 ` [PATCH 13/13] OMAP: DSS2: DSI: remove dsi_vc_print_status() Tomi Valkeinen
2010-02-15 10:34 ` [PATCH 01/13] OMAP: DSS2: enable VDDS_DSI when using DPI Hiremath, Vaibhav
2010-02-15 10:57 ` Tomi Valkeinen [this message]
2010-02-15 12:23 ` Hiremath, Vaibhav
2010-02-15 12:32 ` Tomi Valkeinen
2010-02-15 14:02 ` Grazvydas Ignotas
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