From mboxrd@z Thu Jan 1 00:00:00 1970 From: p.zabel@pengutronix.de (Philipp Zabel) Date: Wed, 24 Jun 2015 11:21:34 +0200 Subject: [PATCH] ARM: dts: imx6qdl-sabresd: Allow HDMI and LVDS to work simultaneously In-Reply-To: References: <1435075417-28708-1-git-send-email-fabio.estevam@freescale.com> <1435076593.3155.30.camel@pengutronix.de> Message-ID: <1435137694.4433.7.camel@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi Fabio, Am Dienstag, den 23.06.2015, 13:32 -0300 schrieb Fabio Estevam: > Hi Phillip, > > On Tue, Jun 23, 2015 at 1:23 PM, Philipp Zabel wrote: > > > Please remember that on i.MX6QDL in general we can't change the LDB > > clock parent without risking a breakdown in the divider: > > > > http://lists.infradead.org/pipermail/linux-arm-kernel/2015-January/313618.html > > http://lists.infradead.org/pipermail/linux-arm-kernel/2015-January/313619.html > > http://lists.infradead.org/pipermail/linux-arm-kernel/2015-January/313620.html > > Yes, I am aware of this issue. > > However this patch does not make things worse with this respect. > Instead of changing the LDB parent to PLL5 this patch changes to PLL3 > instead. If we later make the ldb_di_sel muxes read-only (patch 2 above), this change will not work anymore. If my (version of your initial) patch 3 gets accepted, the assigned-clock-parents property will keep working for ldb_di_sel only if it is placed in the clks device tree node. > > Has there been an erratum for this issue yet? > > I was told we should see it online within a few weeks. Hopefully we > would be able to revisit your patch series after this happens. Good news, thank you. regards Philipp