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ARM: dts: imx6sx-sdb: Remove OPP override

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commit d8581c7c8be172dac156a19d261f988a72ce596f upstream.

The board file for imx6sx-sdb overrides cpufreq operating points to use
higher voltages. This is done because the board has a shared rail for
VDD_ARM_IN and VDD_SOC_IN and when using LDO bypass the shared voltage
needs to be a value suitable for both ARM and SOC.

This only applies to LDO bypass mode, a feature not present in upstream.
When LDOs are enabled the effect is to use higher voltages than necessary
for no good reason.

Setting these higher voltages can make some boards fail to boot with ugly
semi-random crashes reminiscent of memory corruption. These failures only
happen on board rev. C, rev. B is reported to still work.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Fixes: 54183bd7f766 ("ARM: imx6sx-sdb: add revb board and make it default")
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Leonard Crestez 2017-05-05 14:00:17 +03:00 committed by Greg Kroah-Hartman
parent 03d8b264bc
commit 5ee1c675ab
1 changed files with 0 additions and 17 deletions
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17
arch/arm/boot/dts/imx6sx-sdb.dts
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@ -12,23 +12,6 @@
model = "Freescale i.MX6 SoloX SDB RevB Board";
};
&cpu0 {
operating-points = <
/* kHz uV */
996000 1250000
792000 1175000
396000 1175000
198000 1175000
>;
fsl,soc-operating-points = <
/* ARM kHz SOC uV */
996000 1250000
792000 1175000
396000 1175000
198000 1175000
>;
};
&i2c1 {
clock-frequency = <100000>;
pinctrl-names = "default";