linux-kernel - Re: [PATCH v2] arm64: Add a couple of missing part numbers

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Date:   Wed, 1 Feb 2023 10:20:32 +0530
From:   Anshuman Khandual <anshuman.khandual@....com>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        linux-arm-msm@...r.kernel.org, andersson@...nel.org,
        agross@...nel.org, krzysztof.kozlowski@...aro.org
Cc:     marijn.suijten@...ainline.org,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Marc Zyngier <maz@...nel.org>,
        James Morse <james.morse@....com>,
        D Scott Phillips <scott@...amperecomputing.com>,
        Michal Orzel <michal.orzel@....com>,
        Linu Cherian <lcherian@...vell.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] arm64: Add a couple of missing part numbers



On 2/1/23 05:39, Konrad Dybcio wrote:
> Add Cortex X1C and add/clarify various recent Qualcomm Kryo cores,
> which almost exclusively mimic ARM IDs nowadays.

Why add these cpu numbers ? Is there an errata being worked on for them ?
Without specific implementation requirement, these might not be necessary.

> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
> v1 -> v2:
> 
> - Don't change the name of QCOM_CPU_PART_KRYO_4XX_SILVER
> 
>  arch/arm64/include/asm/cputype.h | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/arch/arm64/include/asm/cputype.h b/arch/arm64/include/asm/cputype.h
> index 683ca3af4084..a4260d3194fc 100644
> --- a/arch/arm64/include/asm/cputype.h
> +++ b/arch/arm64/include/asm/cputype.h
> @@ -84,6 +84,7 @@
>  #define ARM_CPU_PART_CORTEX_X2		0xD48
>  #define ARM_CPU_PART_NEOVERSE_N2	0xD49
>  #define ARM_CPU_PART_CORTEX_A78C	0xD4B
> +#define ARM_CPU_PART_CORTEX_X1C		0xD4C
>  
>  #define APM_CPU_PART_POTENZA		0x000
>  
> @@ -107,9 +108,17 @@
>  #define QCOM_CPU_PART_KRYO		0x200
>  #define QCOM_CPU_PART_KRYO_2XX_GOLD	0x800
>  #define QCOM_CPU_PART_KRYO_2XX_SILVER	0x801
> +#define QCOM_CPU_PART_KRYO_3XX_GOLD	0x802
>  #define QCOM_CPU_PART_KRYO_3XX_SILVER	0x803
>  #define QCOM_CPU_PART_KRYO_4XX_GOLD	0x804
>  #define QCOM_CPU_PART_KRYO_4XX_SILVER	0x805
> +#define QCOM_CPU_PART_KRYO_5XX_GOLD	ARM_CPU_PART_CORTEX_A77
> +#define QCOM_CPU_PART_KRYO_6XX_GOLD	ARM_CPU_PART_CORTEX_A78
> +#define QCOM_CPU_PART_KRYO_6XX_GOLDPLUS	ARM_CPU_PART_CORTEX_X1
> +#define QCOM_CPU_PART_KRYO_6XX_SILVER_V1	ARM_CPU_PART_CORTEX_A55
> +#define QCOM_CPU_PART_KRYO_7XX_GOLD	ARM_CPU_PART_CORTEX_A710
> +#define QCOM_CPU_PART_KRYO_7XX_GOLDPLUS	ARM_CPU_PART_CORTEX_X2
> +#define QCOM_CPU_PART_KRYO_7XX_SILVER	ARM_CPU_PART_CORTEX_A510
>  
>  #define NVIDIA_CPU_PART_DENVER		0x003
>  #define NVIDIA_CPU_PART_CARMEL		0x004