* [PATCH] arm64: dts: zii-ultra: fix ARM regulator states
@ 2019-09-06 17:06 Lucas Stach
2019-10-06 2:22 ` Shawn Guo
0 siblings, 1 reply; 2+ messages in thread
From: Lucas Stach @ 2019-09-06 17:06 UTC (permalink / raw)
To: Shawn Guo; +Cc: Fabio Estevam, kernel, linux-arm-kernel, patchwork-lst
The GPIO controlled regulator for the ARM power supply is supplying
the higher voltage when the GPIO is driven high. This is opposite to
the similar regulator setup on the EVK board and is impacting stability
of the board as the ARM domain has been supplied with a too low voltage
when to faster OPPs are in use.
Fixes: 4a13b3bec3b4 (arm64: dts: imx: add Zii Ultra board support)
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
---
arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi b/arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi
index 7a1706f969f0..3faa652fdf20 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi
@@ -101,8 +101,8 @@
regulator-min-microvolt = <900000>;
regulator-max-microvolt = <1000000>;
gpios = <&gpio3 19 GPIO_ACTIVE_HIGH>;
- states = <1000000 0x0
- 900000 0x1>;
+ states = <1000000 0x1
+ 900000 0x0>;
regulator-always-on;
};
};
--
2.20.1
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^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] arm64: dts: zii-ultra: fix ARM regulator states
2019-09-06 17:06 [PATCH] arm64: dts: zii-ultra: fix ARM regulator states Lucas Stach
@ 2019-10-06 2:22 ` Shawn Guo
0 siblings, 0 replies; 2+ messages in thread
From: Shawn Guo @ 2019-10-06 2:22 UTC (permalink / raw)
To: Lucas Stach; +Cc: Fabio Estevam, kernel, linux-arm-kernel, patchwork-lst
On Fri, Sep 06, 2019 at 07:06:01PM +0200, Lucas Stach wrote:
> The GPIO controlled regulator for the ARM power supply is supplying
> the higher voltage when the GPIO is driven high. This is opposite to
> the similar regulator setup on the EVK board and is impacting stability
> of the board as the ARM domain has been supplied with a too low voltage
> when to faster OPPs are in use.
>
> Fixes: 4a13b3bec3b4 (arm64: dts: imx: add Zii Ultra board support)
> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Applied, thanks.
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linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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