From: Romain Perier <romain.perier@collabora.com>
To: Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <kernel@pengutronix.de>,
Fabio Estevam <fabio.estevam@nxp.com>
Cc: devicetree@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Pawel Moll <pawel.moll@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Kumar Gala <galak@codeaurora.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Martyn Welch <martyn.welch@collabora.co.uk>,
Romain Perier <romain.perier@collabora.com>
Subject: [PATCH] ARM: dts: imx: Correct B850v3 clock assignment
Date: Fri, 30 Jun 2017 15:43:37 +0200 [thread overview]
Message-ID: <20170630134337.18245-1-romain.perier@collabora.com> (raw)
From: Martyn Welch <martyn.welch@collabora.co.uk>
The IPU that drives HDMI must have its pre_sel set to pll2_pfd_396m
to avoid stepping on the LVDS output's toes, as the PLL can't be clocked
to the pixel clock and to the LVDS serial clock (3.5*pixel clock) at the
same time.
As we are using ipu1_di0 and ipu2_di0, ensure both are switched to
to pll2_pfd2_396m to avoid issues. The LDB driver will switch the
required IPU to ldb_di1 when it uses it to drive LVDS.
Signed-off-by: Martyn Welch <martyn.welch@collabora.co.uk>
Signed-off-by: Romain Perier <romain.perier@collabora.com>
---
arch/arm/boot/dts/imx6q-b850v3.dts | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/imx6q-b850v3.dts b/arch/arm/boot/dts/imx6q-b850v3.dts
index 2c1e98e..46bdc67 100644
--- a/arch/arm/boot/dts/imx6q-b850v3.dts
+++ b/arch/arm/boot/dts/imx6q-b850v3.dts
@@ -57,7 +57,7 @@
assigned-clocks = <&clks IMX6QDL_CLK_LDB_DI0_SEL>,
<&clks IMX6QDL_CLK_LDB_DI1_SEL>,
<&clks IMX6QDL_CLK_IPU1_DI0_PRE_SEL>,
- <&clks IMX6QDL_CLK_IPU1_DI1_PRE_SEL>;
+ <&clks IMX6QDL_CLK_IPU2_DI0_PRE_SEL>;
assigned-clock-parents = <&clks IMX6QDL_CLK_PLL5_VIDEO_DIV>,
<&clks IMX6QDL_CLK_PLL5_VIDEO_DIV>,
<&clks IMX6QDL_CLK_PLL2_PFD2_396M>,
--
1.8.3.1
next reply other threads:[~2017-06-30 13:43 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-30 13:43 Romain Perier [this message]
2017-07-02 13:43 ` [PATCH] ARM: dts: imx: Correct B850v3 clock assignment Fabio Estevam
2017-07-12 8:31 ` Shawn Guo
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