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From: Tomi Valkeinen <tomi.valkeinen@ti.com>
To: Peter Ujfalusi <peter.ujfalusi@ti.com>,
	Tony Lindgren <tony@atomide.com>, Nishanth Menon <nm@ti.com>
Cc: linux-omap@vger.kernel.org, devicetree@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	"Enric Balletbo i Serra" <eballetbo@iseebcn.com>,
	"Agustí Fontquerni" <af@iseebcn.com>,
	"Eduard Gavin" <egavin@iseebcn.com>
Subject: Re: [PATCH] ARM: dts: omap5-igep0050: Correct hdmi regulator
Date: Mon, 9 May 2016 11:34:38 +0300	[thread overview]
Message-ID: <57304B9E.50201@ti.com> (raw)
In-Reply-To: <a6969765-d07d-6d0e-36df-b78b485d9644@ti.com>


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On 09/05/16 11:25, Peter Ujfalusi wrote:

> Tomi: what do you think?
> 
> According to the OMAP5 data manual the vdda_hdmi can be in 1.5V or 1.8V mode,
> 2V is not mentioned in the recommended operating conditions table.

I thought vdda_hdmi should always be 1.8V, but you're right, on omap5
1.5V is allowed according to DM. On later SoCs it's only 1.8V. I suggest
we use 1.8V on all boards, as that's what's known to work.

2V is definitely wrong.

 Tomi


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WARNING: multiple messages have this Message-ID (diff)
From: tomi.valkeinen@ti.com (Tomi Valkeinen)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: dts: omap5-igep0050: Correct hdmi regulator
Date: Mon, 9 May 2016 11:34:38 +0300	[thread overview]
Message-ID: <57304B9E.50201@ti.com> (raw)
In-Reply-To: <a6969765-d07d-6d0e-36df-b78b485d9644@ti.com>


On 09/05/16 11:25, Peter Ujfalusi wrote:

> Tomi: what do you think?
> 
> According to the OMAP5 data manual the vdda_hdmi can be in 1.5V or 1.8V mode,
> 2V is not mentioned in the recommended operating conditions table.

I thought vdda_hdmi should always be 1.8V, but you're right, on omap5
1.5V is allowed according to DM. On later SoCs it's only 1.8V. I suggest
we use 1.8V on all boards, as that's what's known to work.

2V is definitely wrong.

 Tomi

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  reply	other threads:[~2016-05-09  8:35 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-29 10:21 [PATCH] ARM: dts: omap5-igep0050: Correct hdmi regulator Peter Ujfalusi
2016-04-29 10:21 ` Peter Ujfalusi
2016-04-29 10:21 ` Peter Ujfalusi
2016-04-29 10:22 ` Peter Ujfalusi
2016-04-29 10:22   ` Peter Ujfalusi
2016-04-29 10:22   ` Peter Ujfalusi
2016-05-04 17:26   ` Tony Lindgren
2016-05-04 17:26     ` Tony Lindgren
2016-05-04 17:26     ` Tony Lindgren
2016-05-04 18:01     ` Nishanth Menon
2016-05-04 18:01       ` Nishanth Menon
2016-05-04 18:01       ` Nishanth Menon
2016-05-05 18:46       ` Tony Lindgren
2016-05-05 18:46         ` Tony Lindgren
2016-05-05 18:46         ` Tony Lindgren
2016-05-09  8:25         ` Peter Ujfalusi
2016-05-09  8:25           ` Peter Ujfalusi
2016-05-09  8:34           ` Tomi Valkeinen [this message]
2016-05-09  8:34             ` Tomi Valkeinen
     [not found]         ` <2822D1C2B9B19F4A8261F756A13373F801BEF7B4@DFLE11.ent.ti.com>
     [not found]           ` <CAPjucKb+4vd8Ar3MATCuTx+9R36PeB0hbvwDaAD1KTZFCiVJEA@mail.gmail.com>
     [not found]             ` <2822D1C2B9B19F4A8261F756A13373F801BF86D2@DFLE11.ent.ti.com>
     [not found]               ` <2822D1C2B9B19F4A8261F756A13373F801BF8703@DFLE11.ent.ti.com>
     [not found]                 ` <CAPjucKb2PLSZcD3YZ9xQk1F62ugFaGAkBBqMp5GmoWFd0H8Vfg@mail.gmail.com>
2016-05-12 16:57                   ` Tony Lindgren
2016-05-12 16:57                     ` Tony Lindgren
2016-05-12 19:19                     ` Nishanth Menon
2016-05-12 19:19                       ` Nishanth Menon
2016-05-12 20:26                       ` Tony Lindgren
2016-05-12 20:26                         ` Tony Lindgren

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