[PATCH 03/18] ARM: dts: exynos: correct fuel gauge interrupt trigger level on Midas family

[Krzysztof Kozlowski]

On Thu, Dec 10, 2020 at 10:25:19PM +0100, Krzysztof Kozlowski wrote:
> The Maxim fuel gauge datasheets describe the interrupt line as active
> low with a requirement of acknowledge from the CPU.  The falling edge
> interrupt will mostly work but it's not correct.
> 
> Fixes: e8614292cd41 ("ARM: dts: Add Maxim 77693 fuel gauge node for exynos4412-trats2")
> Signed-off-by: Krzysztof Kozlowski <krzk at kernel.org>
> ---
>  arch/arm/boot/dts/exynos4412-midas.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Hi Marek,

I remember you were reporting that on Trats2 you see fuel gauge
interrupt storm with this patchset. Is it correct? Shall I wait with
applying this?

Best regards,
Krzysztof

> diff --git a/arch/arm/boot/dts/exynos4412-midas.dtsi b/arch/arm/boot/dts/exynos4412-midas.dtsi
> index 111c32bae02c..b8b75dc81aa1 100644
> --- a/arch/arm/boot/dts/exynos4412-midas.dtsi
> +++ b/arch/arm/boot/dts/exynos4412-midas.dtsi
> @@ -221,7 +221,7 @@ i2c_max77693_fuel: i2c-gpio-3 {
>  		fuel-gauge at 36 {
>  			compatible = "maxim,max17047";
>  			interrupt-parent = <&gpx2>;
> -			interrupts = <3 IRQ_TYPE_EDGE_FALLING>;
> +			interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
>  			pinctrl-names = "default";
>  			pinctrl-0 = <&max77693_fuel_irq>;
>  			reg = <0x36>;
> -- 
> 2.25.1
>