From: "Marc Reilly" <marc@cpdesign.com.au>
To: 'Sascha Hauer' <s.hauer@pengutronix.de>
Cc: barebox@lists.infradead.org
Subject: RE: Splash screen on mx35 3 stack
Date: Mon, 5 Apr 2010 14:55:33 +1000 [thread overview]
Message-ID: <003d01cad47c$3cc272d0$b6475870$@cpdesign.com.au> (raw)
In-Reply-To: <20100331121903.GU2241@pengutronix.de>
Hi Sascha,
Please pardon my terrible manners for not saying a big "thank you" sooner!
Easter holiday preparations got in the way.
> I have short circuited pins 2 and 3 of q6 on the personality board to get
power
> to the LCD. q6 is normally driven by the mc9s08 (pin ptf0). We did not
have
> any code for this chip at that time and then forgot about it. As we now
have a
> driver for it it should only be a matter of finding the right bits to
twiddle with.
Ah, I see ... so this LCD only works if power is supplied to it? :)
As a quick test I shorted out pin 2 and 3 of Q6, and the LCD works.
However, I can't that FET to turn on via software. I've tried enabling the
LCD in f3s_enable_display with:
u8 mask = (0x01 << 6);
mc9sdz60_set_bits( mc9sdz60_get(), MC9SDZ60_REG_GPIO_1, mask , mask);
From a quick glance, this seemed to be essentially what the kernel was
doing. Mc9sdz60 registers read as expected but the screen stays off - that's
as much as I had time for.
> Patches welcome ;)
If I figure it out, will submit a patch for sure, but I'll be moving to
custom hardware soon and it will become irrelevant, so I may have to admit
defeat.
Thanks again!
Cheers
Marc
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next prev parent reply other threads:[~2010-04-05 4:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-31 9:59 Marc Reilly
2010-03-31 12:19 ` Sascha Hauer
2010-04-05 4:55 ` Marc Reilly [this message]
2010-04-06 6:30 ` 'Sascha Hauer'
2010-04-06 6:48 ` Peter Korsgaard
2010-04-01 5:58 ` Eric Bénard
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