diff options
author | Krzysztof Kozlowski <krzk@kernel.org> | 2020-09-17 20:54:47 +0200 |
---|---|---|
committer | Shawn Guo <shawnguo@kernel.org> | 2020-09-22 17:06:04 +0800 |
commit | 5f67317bd967bbdde945ce3a586d3841f8a5bf65 (patch) | |
tree | 3b4b75c31285933c50e85985c7b2215b0877a3ab /arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi | |
parent | 1d93b292af67e1848a87991c59be6929187cba23 (diff) |
arm64: dts: imx8mm: correct interrupt flags
GPIO_ACTIVE_x flags are not correct in the context of interrupt flags.
These are simple defines so they could be used in DTS but they will not
have the same meaning:
1. GPIO_ACTIVE_HIGH = 0 = IRQ_TYPE_NONE
2. GPIO_ACTIVE_LOW = 1 = IRQ_TYPE_EDGE_RISING
Correct the interrupt flags, assuming the author of the code wanted same
logical behavior behind the name "ACTIVE_xxx", this is:
ACTIVE_LOW => IRQ_TYPE_LEVEL_LOW
ACTIVE_HIGH => IRQ_TYPE_LEVEL_HIGH
In case of level low interrupts, enable also internal pull up. It is
required at least on imx8mm-evk, according to schematics.
The schematics for Variscite imx8mm-var-som are not available and
I was unable to get proper configuration from Variscite.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-By: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi')
-rw-r--r-- | arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi index 9c6e91243ba0..4107fe914d08 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi @@ -137,7 +137,11 @@ reg = <0x4b>; pinctrl-0 = <&pinctrl_pmic>; interrupt-parent = <&gpio2>; - interrupts = <8 GPIO_ACTIVE_LOW>; + /* + * The interrupt is not correct. It should be level low, + * however with internal pull up this causes IRQ storm. + */ + interrupts = <8 IRQ_TYPE_EDGE_RISING>; rohm,reset-snvs-powered; #clock-cells = <0>; |