linux-kernel - Re: [PATCH] arm64: dts: qcom: sdm845-mtp: enable IPA

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Message-ID: <20200518232402.GM2165@builder.lan>
Date:   Mon, 18 May 2020 16:24:02 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Alex Elder <elder@...aro.org>
Cc:     agross@...nel.org, evgreen@...omium.org, subashab@...eaurora.org,
        cpratapa@...eaurora.org, robh+dt@...nel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm64: dts: qcom: sdm845-mtp: enable IPA

On Mon 18 May 14:48 PDT 2020, Alex Elder wrote:

> Enable IPA on the SDM845 MTP.
> 
> Signed-off-by: Alex Elder <elder@...aro.org>
> ---
>  arch/arm64/boot/dts/qcom/sdm845-mtp.dts | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
> index 1372fe8601f5..2f942daeb9d1 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
> +++ b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
> @@ -448,6 +448,11 @@
>  	clock-frequency = <400000>;
>  };
>  
> +&ipa {
> +	status = "okay";
> +	modem-init;

modem-init tells the IPA driver that the modem will load the ipa_fws
firmware, but the MTP is assumed to run "LA" firmware where it's the
Linux-side's job to do this.

Regards,
Bjorn

> +};
> +
>  &mdss {
>  	status = "okay";
>  };
> -- 
> 2.20.1
>