linux-kernel - Re: [PATCHv6 0/4] omapdrm: DSI command mode panel support

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Date:   Tue, 28 May 2019 13:32:40 +0300
From:   Tomi Valkeinen <tomi.valkeinen@...com>
To:     Tony Lindgren <tony@...mide.com>
CC:     Sebastian Reichel <sebastian.reichel@...labora.com>,
        Sebastian Reichel <sre@...nel.org>,
        Pavel Machek <pavel@....cz>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        "H. Nikolaus Schaller" <hns@...delico.com>,
        <dri-devel@...ts.freedesktop.org>, <linux-omap@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <kernel@...labora.com>,
        Keerthy <j-keerthy@...com>,
        Peter Ujfalusi <peter.ujfalusi@...com>
Subject: Re: [PATCHv6 0/4] omapdrm: DSI command mode panel support

On 28/05/2019 13:18, Tony Lindgren wrote:

>> This change lets me boot. I don't know that's the correct place, though:
>>
>> diff --git a/arch/arm/boot/dts/am5728.dtsi b/arch/arm/boot/dts/am5728.dtsi
>> index 82e5427ef6a9..c778f9a86b3a 100644
>> --- a/arch/arm/boot/dts/am5728.dtsi
>> +++ b/arch/arm/boot/dts/am5728.dtsi
>> @@ -31,3 +31,7 @@
>> &atl_tm {
>>         status = "disabled";
>> };
>> +
>> +&timer12 {
>> +       status = "disabled";
>> +};
> 
> OK we should disable it at the target-module level though. Interesting
> that reading the revision register works with the above, or maybe you
> still get some warning?

I don't see anything odd in the boot log with the above change. At least 
no kernel WARNs, nor anything with grepping "timer", "err", or "warn".

I just verified with clean 5.2-rc2, that it doesn't boot, and with the 
above change, boots.

>> My board is x15 rev A3, attached to AM5 EVM. I've also attached my kernel
>> config.
> 
> Strange that this is not affecting other x15? I think timer12 would
> be blocked on HS devices though?

I don't know... I can't believe my x15 would be unique =). Can it be 
something in the kernel config? u-boot?

Peter should have the same A3. Peter, can you try with my config?

  Tomi

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