linux-kernel - Re: [PATCH 10/11] arm64: dts: qcom: Add SM7225 device tree

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Message-ID: <cef85f62-7d26-593a-0d71-c5513254e2c5@somainline.org>
Date:   Sun, 3 Oct 2021 13:32:06 +0200
From:   Konrad Dybcio <konrad.dybcio@...ainline.org>
To:     Luca Weiss <luca@...tu.xyz>, linux-arm-msm@...r.kernel.org
Cc:     ~postmarketos/upstreaming@...ts.sr.ht,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 10/11] arm64: dts: qcom: Add SM7225 device tree


On 03.10.2021 10:31, Luca Weiss wrote:
> The Snapdragon 750G (sm7225) is software-wise very similar to Snapdragon
> 690 (sm6350) with minor differences in clock speeds and as added here,
> it uses the Kryo 570 instead of Kryo 560.
>
> Signed-off-by: Luca Weiss <luca@...tu.xyz>
> ---
>  arch/arm64/boot/dts/qcom/sm7225.dtsi | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/qcom/sm7225.dtsi
>
> diff --git a/arch/arm64/boot/dts/qcom/sm7225.dtsi b/arch/arm64/boot/dts/qcom/sm7225.dtsi
> new file mode 100644
> index 000000000000..7b2a002ca7ff
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/sm7225.dtsi
> @@ -0,0 +1,16 @@
> +// SPDX-License-Identifier: BSD-3-Clause
> +/*
> + * Copyright (c) 2021, Luca Weiss <luca@...tu.xyz>
> + */
> +
> +#include "sm6350.dtsi"
> +
> +/* SM7225 uses Kryo 570 instead of Kryo 560 */
> +&CPU0 { compatible = "qcom,kryo570"; };
> +&CPU1 { compatible = "qcom,kryo570"; };
> +&CPU2 { compatible = "qcom,kryo570"; };
> +&CPU3 { compatible = "qcom,kryo570"; };
> +&CPU4 { compatible = "qcom,kryo570"; };
> +&CPU5 { compatible = "qcom,kryo570"; };
> +&CPU6 { compatible = "qcom,kryo570"; };
> +&CPU7 { compatible = "qcom,kryo570"; };
>
As we discussed in private, we discovered after some poking on the Xperia 10 III and FP4, Qualcomm decided to use the "lagoon" codename for at least 3 SoCs, two of which are 6350 and 7225, with the third (and possibly more, eh...) yet to be discovered. For now we can tell the max GPU clock is over 50% higher on the 7225, but we'll get to know more differences as we progress forward.

Reviewed-by: Konrad Dybcio <konrad.dybcio@...ainline.org>


Konrad