linux-kernel - Re: [PATCH v2 7/7] arm64: dts: pmi8998: Add the right interrupts for LAB/IBB SCP and OCP

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Message-ID: <YAEqKZknkKT8/KSJ@builder.lan>
Date:   Thu, 14 Jan 2021 23:37:45 -0600
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>
Cc:     linux-arm-msm@...r.kernel.org, agross@...nel.org,
        lgirdwood@...il.com, broonie@...nel.org, robh+dt@...nel.org,
        sumit.semwal@...aro.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, phone-devel@...r.kernel.org,
        konrad.dybcio@...ainline.org, marijn.suijten@...ainline.org,
        martin.botka@...ainline.org
Subject: Re: [PATCH v2 7/7] arm64: dts: pmi8998: Add the right interrupts for
 LAB/IBB SCP and OCP

On Wed 13 Jan 13:42 CST 2021, AngeloGioacchino Del Regno wrote:

> In commit 208921bae696 ("arm64: dts: qcom: pmi8998: Add nodes for
> LAB and IBB regulators") bindings for the lab/ibb regulators were
> added to the pmi8998 dt, but the original committer has never
> specified what the interrupts were for.
> LAB and IBB regulators provide two interrupts, SC-ERR (short
> circuit error) and VREG-OK but, in that commit, the regulators
> were provided with two different types of interrupts;
> specifically, IBB had the SC-ERR interrupt, while LAB had the
> VREG-OK one, none of which were (luckily) used, since the driver
> didn't actually use these at all.
> Assuming that the original intention was to have the SC IRQ in
> both LAB and IBB, as per the names appearing in documentation,
> fix the SCP interrupt.
> 
> While at it, also add the OCP interrupt in order to be able to
> enable the Over-Current Protection feature, if requested.
> 

Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>

Regards,
Bjorn

> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...ainline.org>
> ---
>  arch/arm64/boot/dts/qcom/pmi8998.dtsi | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/pmi8998.dtsi b/arch/arm64/boot/dts/qcom/pmi8998.dtsi
> index d016b12967eb..d230c510d4b7 100644
> --- a/arch/arm64/boot/dts/qcom/pmi8998.dtsi
> +++ b/arch/arm64/boot/dts/qcom/pmi8998.dtsi
> @@ -30,11 +30,15 @@ labibb {
>  			compatible = "qcom,pmi8998-lab-ibb";
>  
>  			ibb: ibb {
> -				interrupts = <0x3 0xdc 0x2 IRQ_TYPE_EDGE_RISING>;
> +				interrupts = <0x3 0xdc 0x2 IRQ_TYPE_EDGE_RISING>,
> +					     <0x3 0xdc 0x0 IRQ_TYPE_LEVEL_HIGH>;
> +				interrupt-names = "sc-err", "ocp";
>  			};
>  
>  			lab: lab {
> -				interrupts = <0x3 0xde 0x0 IRQ_TYPE_EDGE_RISING>;
> +				interrupts = <0x3 0xde 0x1 IRQ_TYPE_EDGE_RISING>,
> +					     <0x3 0xde 0x0 IRQ_TYPE_LEVEL_LOW>;
> +				interrupt-names = "sc-err", "ocp";
>  			};
>  		};
>  	};
> -- 
> 2.29.2
>