From: festevam@gmail.com (Fabio Estevam)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: dts: imx6sx-sdb: Add 198MHz operational point
Date: Thu, 28 Apr 2016 23:34:27 -0300 [thread overview]
Message-ID: <1461897267-20458-1-git-send-email-festevam@gmail.com> (raw)
From: Fabio Estevam <fabio.estevam@nxp.com>
imx6sx-sdb has custom operating points entries because it has one
power supply that drives both VDDARM_IN and VDDSOC_IN.
As per the MX6UL datasheet we have the following minimum voltages for
198 MHz operation (after adding the 25mV margin value):
VDDARM_IN = 0.975 V
VDDSOC_IN = 1.175 V
So use 1.175V for the 198MHz operation.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
---
arch/arm/boot/dts/imx6sx-sdb.dts | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm/boot/dts/imx6sx-sdb.dts b/arch/arm/boot/dts/imx6sx-sdb.dts
index 0ad164a..5bb8fd5 100644
--- a/arch/arm/boot/dts/imx6sx-sdb.dts
+++ b/arch/arm/boot/dts/imx6sx-sdb.dts
@@ -18,12 +18,14 @@
996000 1250000
792000 1175000
396000 1175000
+ 198000 1175000
>;
fsl,soc-operating-points = <
/* ARM kHz SOC uV */
996000 1250000
792000 1175000
396000 1175000
+ 198000 1175000
>;
};
--
1.9.1
next reply other threads:[~2016-04-29 2:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-29 2:34 Fabio Estevam [this message]
2016-05-03 8:37 ` [PATCH] ARM: dts: imx6sx-sdb: Add 198MHz operational point Shawn Guo
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