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Message-ID: <a2e863e2-9c8b-47c2-b4d8-5664d954cd49@quicinc.com>
Date: Tue, 5 Mar 2024 23:55:04 +0530
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Subject: Re: [RFC 3/3] arm64: dts: qcom: sa8775p-ride: Enable support for
 firmware managed resources
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From: Sriram Dash <quic_sriramd@quicinc.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
        <andersson@kernel.org>, <konrad.dybcio@linaro.org>, <vkoul@kernel.org>,
        <kishon@kernel.org>, <robh@kernel.org>,
        <krzysztof.kozlowski+dt@linaro.org>, <conor+dt@kernel.org>,
        <gregkh@linuxfoundation.org>, <quic_wcheng@quicinc.com>,
        <Thinh.Nguyen@synopsys.com>, <p.zabel@pengutronix.de>,
        <linux-arm-msm@vger.kernel.org>, <linux-phy@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>, <linux-usb@vger.kernel.org>,
        <quic_psodagud@quicinc.com>, <quic_nkela@quicinc.com>,
        <manivannan.sadhasivam@linaro.org>, <ulf.hansson@linaro.org>,
        <sudeep.holla@arm.com>, <quic_shazhuss@quicinc.com>,
        <devicetree@vger.kernel.org>
References: <1709657858-8563-1-git-send-email-quic_sriramd@quicinc.com>
 <1709657858-8563-4-git-send-email-quic_sriramd@quicinc.com>
 <b9142874-0afb-40a6-9008-b33bd8f56840@linaro.org>
 <399555e8-d8fa-46b7-8b15-3d3a4a30809b@quicinc.com>
In-Reply-To: <399555e8-d8fa-46b7-8b15-3d3a4a30809b@quicinc.com>
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On 3/5/2024 11:33 PM, Sriram Dash wrote:
> On 3/5/2024 10:38 PM, Krzysztof Kozlowski wrote:
>> On 05/03/2024 17:57, Sriram Dash wrote:
>>> Establish the channel and domain mapping for the power domains to 
>>> connect
>>> with firmware, enabling the firmware to handle the assigned resources.
>>> Since these delegated resources will remain invisible to the operating
>>> system, ensure that any references to them are removed.
>>>
>>> Signed-off-by: Sriram Dash <quic_sriramd@quicinc.com>
>>> ---
>>>   arch/arm64/boot/dts/qcom/sa8775p-ride.dts | 96 
>>> +++++++++++++++++++++++++------
>>>   1 file changed, 77 insertions(+), 19 deletions(-)
>>
>> Do not mix DTS patches with submissions to netdev or USB.
>>
>> Please put it inside your internal guides, so you will not be repeating
>> this over and over.
>>
> 
> Sure. Will take care. Thanks.
> 
>>>
>>> diff --git a/arch/arm64/boot/dts/qcom/sa8775p-ride.dts 
>>> b/arch/arm64/boot/dts/qcom/sa8775p-ride.dts
>>> index 26ad05b..b6c9cac 100644
>>> --- a/arch/arm64/boot/dts/qcom/sa8775p-ride.dts
>>> +++ b/arch/arm64/boot/dts/qcom/sa8775p-ride.dts
>>> @@ -764,8 +764,18 @@
>>>   };
>>>   &usb_0 {
>>> -    pinctrl-names = "default";
>>> -    pinctrl-0 = <&usb0_en_state>;
>>> +    /delete-property/ clocks;
>>> +    /delete-property/ clock-names;
>>> +    /delete-property/ assigned-clocks;
>>> +    /delete-property/ assigned-clock-rates;
>>> +    /delete-property/ required-opps;
>>> +    /delete-property/ resets;
>>> +    /delete-property/ interconnects;
>>> +    /delete-property/ interconnect-names;
>>> +
>>> +    power-domains = <TODO>, <TODO>;
>>
>> This wasn't even tested.
>>
> 
> This is tested with the specific power domains in place
> of <TODO>. SCMI interface is used for the power domains.
> 
>> Best regards,
>> Krzysztof
>>