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ARM: dts: imx6sx-sdb: Add 198MHz operational point

PATCH New Fabio Estevam 2 participants 2 messages Apr 29, 2016 – May 3, 2016

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Fabio Estevam

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PATCH 1/1 ARM: dts: imx6sx-sdb: Add 198MHz operational point

From: Fabio Estevam <[email protected]>

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.

---
 arch/arm/boot/dts/imx6sx-sdb.dts | 2 ++
 1 file changed, 2 insertions(+)
arch/arm/boot/dts/imx6sx-sdb.dts +2 -0
index 0ad164a..5bb8fd5 100644
@@ -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
 	>;
 };
 
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#1 lore raw

PATCH 1/1 ARM: dts: imx6sx-sdb: Add 198MHz operational point

Quoted 5 lines · Fabio Estevam

From: Fabio Estevam <[email protected]>

imx6sx-sdb has custom operating points entries because it has one power supply that drives both VDDARM_IN and VDDSOC_IN.

Quoted 8 lines

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.

Applied, thanks.