linux-kernel - Re: [PATCH v2 8/8] arm64: defconfig: enable interconnect and pinctrl for SM4450

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Date:   Fri, 15 Sep 2023 13:29:16 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Tengfei Fan <quic_tengfan@...cinc.com>, will@...nel.org,
        robin.murphy@....com, joro@...tes.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        agross@...nel.org, andersson@...nel.org, konrad.dybcio@...aro.org,
        catalin.marinas@....com
Cc:     geert+renesas@...der.be, arnd@...db.de, neil.armstrong@...aro.org,
        nfraprado@...labora.com, rafal@...ecki.pl, peng.fan@....com,
        linux-arm-kernel@...ts.infradead.org, iommu@...ts.linux.dev,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, quic_tsoni@...cinc.com,
        quic_shashim@...cinc.com, quic_kaushalk@...cinc.com,
        quic_tdas@...cinc.com, quic_tingweiz@...cinc.com,
        quic_aiquny@...cinc.com, kernel@...cinc.com
Subject: Re: [PATCH v2 8/8] arm64: defconfig: enable interconnect and pinctrl
 for SM4450

On 15/09/2023 13:18, Tengfei Fan wrote:
> 
> 
> 在 9/15/2023 5:16 PM, Krzysztof Kozlowski 写道:
>> On 15/09/2023 11:12, Tengfei Fan wrote:
>>>
>>>
>>> 在 9/15/2023 3:21 PM, Krzysztof Kozlowski 写道:
>>>> On 15/09/2023 04:15, Tengfei Fan wrote:
>>>>> Add the SM4450 interconnect and pinctrl drivers as built-in for
>>>>> support the Qualcomm SM4450 platform to boot to uart shell.
>>>>>
>>>>> Signed-off-by: Tengfei Fan <quic_tengfan@...cinc.com>
>>>>> ---
>>>>>    arch/arm64/configs/defconfig | 2 ++
>>>>>    1 file changed, 2 insertions(+)
>>>>>
>>>>> diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
>>>>> index ec59174b14db..e91993de865e 100644
>>>>> --- a/arch/arm64/configs/defconfig
>>>>> +++ b/arch/arm64/configs/defconfig
>>>>> @@ -598,6 +598,7 @@ CONFIG_PINCTRL_SC8280XP=y
>>>>>    CONFIG_PINCTRL_SDM660=y
>>>>>    CONFIG_PINCTRL_SDM670=y
>>>>>    CONFIG_PINCTRL_SDM845=y
>>>>> +CONFIG_PINCTRL_SM4450=y
>>>>>    CONFIG_PINCTRL_SM6115=y
>>>>>    CONFIG_PINCTRL_SM6125=y
>>>>>    CONFIG_PINCTRL_SM6350=y
>>>>> @@ -1500,6 +1501,7 @@ CONFIG_INTERCONNECT_QCOM_SC7280=y
>>>>>    CONFIG_INTERCONNECT_QCOM_SC8180X=y
>>>>>    CONFIG_INTERCONNECT_QCOM_SC8280XP=y
>>>>>    CONFIG_INTERCONNECT_QCOM_SDM845=y
>>>>> +CONFIG_INTERCONNECT_QCOM_SM4450=y
>>>>
>>>> Why it cannot be =m?
>>>>
>>>> Best regards,
>>>> Krzysztof
>>>>
>>>
>>> Hi Krzysztof,
>>> Because system haven't capacity of loading ko files at this time on
>>> SM4450 platform, so setting to "Y".
>>
>> Hm? System has this capability. All systems have. What is so different
>> on SM4450 comparing to everything else we have here?
>>
>> No, this should be =m and you need to fix your system.
>>
>> Best regards,
>> Krzysztof
>>
> Hi Krzysztof,
> Find new way which can load ko files on SM4450 platform, still need use 
> "Y", because of some other modules have dependence to these two config, 
> like scm, smmu module drivers, uart shell console cannot be got if set 
> to "m".

That's what I am asking, which device exactly needs it.

> 
> Also do test for setting these two config to "m" on SM8450 platform, get 
> uart shell consle failed if so setting.

Yeah, this we know, I did this. I am asking about SM4450.

Best regards,
Krzysztof