[PATCH] ARM: dts: imx53-qsb: Constrain the TVE DAC voltage
shawnguo at kernel.org
Wed Mar 8 06:01:35 PST 2017
On Wed, Feb 08, 2017 at 10:33:51AM -0200, Fabio Estevam wrote:
> Quoting Philipp Zabel:
> "Since this regulator is used as the TVDAC analog power supply, this
> range should at least be limited to the analog power supply range of the
> TVDAC, listed in Table 74-9. of the i.MX53 reference manual (2.5-2.75V).
> But since the nominal voltage is 2.75V, which was used to determine the
> analog gain that is supposed to result in the necessary 0.7V
> peak-to-peak amplitude on the VGA output, I'd say we should just fix the
> voltage to 2750000 here."
> , so limit the TVDAC analog power supply as suggested.
> Suggested-by: Lucas Stach <l.stach at pengutronix.de>
> Suggested-by: Philipp Zabel <p.zabel at pengutronix.de>
> Signed-off-by: Fabio Estevam <fabio.estevam at nxp.com>
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