netdev - Re: [PATCH v2 08/11] arm64: dts: qcom: Add SM7325 device tree

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Message-ID: <90a95443-65c5-44e8-8737-26145cda1e35@gmail.com>
Date: Tue, 20 Aug 2024 02:48:40 +0200
From: Konrad Dybcio <konradybcio@...il.com>
To: Danila Tikhonov <danila@...xyga.com>, robh@...nel.org,
 krzk+dt@...nel.org, conor+dt@...nel.org, andersson@...nel.org,
 konradybcio@...nel.org, davem@...emloft.net, edumazet@...gle.com,
 kuba@...nel.org, pabeni@...hat.com, rafael@...nel.org,
 viresh.kumar@...aro.org, kees@...nel.org, tony.luck@...el.com,
 gpiccoli@...lia.com, ulf.hansson@...aro.org, andre.przywara@....com,
 quic_rjendra@...cinc.com, davidwronek@...il.com, neil.armstrong@...aro.org,
 heiko.stuebner@...rry.de, rafal@...ecki.pl, macromorgan@...mail.com,
 linus.walleij@...aro.org, lpieralisi@...nel.org,
 dmitry.baryshkov@...aro.org, fekz115@...il.com
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-arm-msm@...r.kernel.org, netdev@...r.kernel.org,
 linux-pm@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH v2 08/11] arm64: dts: qcom: Add SM7325 device tree

On 8.08.2024 8:40 PM, Danila Tikhonov wrote:
> From: Eugene Lepshy <fekz115@...il.com>
> 
> The Snapdragon 778G (SM7325) / 778G+ (SM7325-AE) / 782G (SM7325-AF)
> is software-wise very similar to the Snapdragon 7c+ Gen 3 (SC7280).
> 
> It uses the Kryo670.
> 
> Signed-off-by: Eugene Lepshy <fekz115@...il.com>
> Signed-off-by: Danila Tikhonov <danila@...xyga.com>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> ---
>  arch/arm64/boot/dts/qcom/sm7325.dtsi | 17 +++++++++++++++++
>  1 file changed, 17 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/qcom/sm7325.dtsi
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm7325.dtsi b/arch/arm64/boot/dts/qcom/sm7325.dtsi
> new file mode 100644
> index 000000000000..5b4574484412
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/sm7325.dtsi
> @@ -0,0 +1,17 @@
> +// SPDX-License-Identifier: BSD-3-Clause
> +/*
> + * Copyright (c) 2024, Eugene Lepshy <fekz115@...il.com>
> + * Copyright (c) 2024, Danila Tikhonov <danila@...xyga.com>
> + */
> +
> +#include "sc7280.dtsi"
> +
> +/* SM7325 uses Kryo 670 */
> +&CPU0 { compatible = "qcom,kryo670"; };
> +&CPU1 { compatible = "qcom,kryo670"; };
> +&CPU2 { compatible = "qcom,kryo670"; };
> +&CPU3 { compatible = "qcom,kryo670"; };
> +&CPU4 { compatible = "qcom,kryo670"; };
> +&CPU5 { compatible = "qcom,kryo670"; };
> +&CPU6 { compatible = "qcom,kryo670"; };
> +&CPU7 { compatible = "qcom,kryo670"; };

This is a meaningless marketing name. As you mentioned in your
reply, cpu0-3 and cpu4-7 are wholly different (maybe cpu7 even
has a different MIDR part num?), we should do something about it :/

Please post the output of `dmesg | grep "Booted secondary processor"`

Konrad