From mboxrd@z Thu Jan 1 00:00:00 1970 From: shawnguo@kernel.org (Shawn Guo) Date: Wed, 8 Mar 2017 15:01:35 +0100 Subject: [PATCH] ARM: dts: imx53-qsb: Constrain the TVE DAC voltage In-Reply-To: <1486557231-8889-1-git-send-email-fabio.estevam@nxp.com> References: <1486557231-8889-1-git-send-email-fabio.estevam@nxp.com> Message-ID: <20170308140134.GC19934@x250> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 > Suggested-by: Philipp Zabel > Signed-off-by: Fabio Estevam Applied, thanks.