linux-kernel - Re: [PATCH v2] arm64: dts: qcom: add wifi node for IPQ5332 based RDP441

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Message-ID: <96b26045-6f7d-435f-92a0-d994d4afc953@quicinc.com>
Date: Wed, 26 Feb 2025 23:54:35 +0530
From: Raj Kumar Bhagat <quic_rajkbhag@...cinc.com>
To: Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
        Bjorn Andersson
	<andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring
	<robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
	<conor+dt@...nel.org>
CC: <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <ath12k@...ts.infradead.org>,
        <linux-wireless@...r.kernel.org>
Subject: Re: [PATCH v2] arm64: dts: qcom: add wifi node for IPQ5332 based
 RDP441

On 2/3/2025 7:35 PM, Konrad Dybcio wrote:
> On 30.01.2025 5:59 AM, Raj Kumar Bhagat wrote:
>> RDP441 is based on IPQ5332. It has inbuilt AHB bus based IPQ5332 WiFi
>> device.
>>
>> Describe and add WiFi node for RDP441. Also, reserve the memory
>> required by IPQ5332 firmware.
>>
>> Depends-On: [PATCH V2 0/2] mailbox: tmel-qmp: Introduce QCOM TMEL QMP mailbox driver
>> Depends-On: [PATCH V3 0/8] Add new driver for WCSS secure PIL loading
>> Link: https://lore.kernel.org/lkml/20241231054900.2144961-1-quic_srichara@quicinc.com/
>> Link: https://lore.kernel.org/lkml/20250107101647.2087358-1-quic_gokulsri@quicinc.com/
>>
>> Signed-off-by: Raj Kumar Bhagat <quic_rajkbhag@...cinc.com>
>> ---
> 
> [...]
> 
>>  / {
>>  	model = "Qualcomm Technologies, Inc. IPQ5332 MI01.2";
>>  	compatible = "qcom,ipq5332-ap-mi01.2", "qcom,ipq5332";
>> +
>> +	/*                 Default Profile
>> +	 * +============+==============+=====================+
>> +	 * |            |              |                     |
>> +	 * | Region     | Start Offset |       Size          |
>> +	 * |            |              |                     |
>> +	 * +------------+--------------+---------------------+
>> +	 * |            |              |                     |
>> +	 * |            |              |                     |
>> +	 * |            |              |                     |
>> +	 * | WLAN Q6    |  0x4A900000  |       43MB          |
>> +	 * |            |              |                     |
>> +	 * |            |              |                     |
>> +	 * +------------+--------------+---------------------+
>> +	 * | M3 Dump    |  0x4D400000  |       1MB           |
>> +	 * +------------+--------------+---------------------+
>> +	 * | Q6 caldb   |  0x4D500000  |       5MB           |
>> +	 * +------------+--------------+---------------------+
>> +	 * | MLO        |  0x4DB00000  |       18MB          |
>> +	 * +============+==============+=====================+
>> +	 * |                                                 |
>> +	 * |                                                 |
>> +	 * |                                                 |
>> +	 * |            Rest of memory for Linux             |
>> +	 * |                                                 |
>> +	 * |                                                 |
>> +	 * |                                                 |
>> +	 * +=================================================+
>> +	 */
> 
> I'm still not super on board with this graph, since this is a very predictable
> layout where there's [something for firmware, contiguous] and [free]
> 

As per latest comment from Bjorn, will omit this graph representation in the
next version.