* [PATCH] ARM: dts: imx6sx-sdb: Add 198MHz operational point
@ 2016-04-29 2:34 Fabio Estevam
2016-05-03 8:37 ` Shawn Guo
0 siblings, 1 reply; 2+ messages in thread
From: Fabio Estevam @ 2016-04-29 2:34 UTC (permalink / raw)
To: linux-arm-kernel
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
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2016-04-29 2:34 [PATCH] ARM: dts: imx6sx-sdb: Add 198MHz operational point Fabio Estevam
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