Re: [PATCH] ath11k: add driver [q6_rproc DTS property)

[Sven Eckelmann <seckelmann@datto.com>]

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On Monday, 8 April 2019 19:42:24 CEST Sven Eckelmann wrote:
[...]
> What is this q6_rproc DTS property (and why doesn't have it a qcom, prefix and 
> not just called qcom,rproc)? I cannot find a public use of this and there also 
> doesn't seem to be documentation for it. Still it is required to bring up the 
> device without IPQ_SUBSYSTEM_RESTART (which is not available in the upstream 
> kernel) but with remoteproc.
> 
> The first reference I could find this in your internal linux-msm [1] was also 
> in this driver. There were also some function named similar in the q6v6 adsp/
> q6v5 wcss driver [2] but no actual use in a dts or documentation. A wcss pil 
> driver for remoteproc seems to be upstream now [3] but it isn't used 
> anywhere.

I just saw the commit 

    Subject: ath11k: add qmi API support and rproc_boot for Q6
    
    rproc_boot() is used to power up the Q6 remote processor.
    Q6 has the QMI server running. on Q6 power up 'qrtr-cfg'
    and 'qrtr-ns' applications will send the .new_server()
    notification to ath11k driver.
      - qrtr source 'https://github.com/andersson/qrtr'
    
    Load the BDF/cal-data and share the CE config to Q6 target
    using the below list of QMI messages.
    
    QMI Client [ATH11K]             QMI server [Q6 FW]
            <-----  ATH11K_QMI_EVENT_SERVER_ARRIVE  ----
            ---- QMI_WLANFW_IND_REGISTER_REQ_V01 ----->
            <---- QMI_WLANFW_IND_REGISTER_RESP_V01 ----
            ---- QMI_WLANFW_HOST_CAP_REQ_V01 ---->
            <---- QMI_WLFW_HOST_CAP_RESP_V01 ----
            <---- ATH11K_QMI_EVENT_REQUEST_MEM ----
            ---- QMI_WLANFW_RESPOND_MEM_REQ_V01 ---->
            <---- QMI_WLANFW_RESPOND_MEM_RESP_V01 ----
            <---- ATH11K_QMI_EVENT_FW_MEM_READY ----
            ---- QMI_WLANFW_CAP_REQ_V01 ---->
            <---- QMI_WLANFW_CAP_RESP_V01 ----
            ---- QMI_WLANFW_BDF_DOWNLOAD_REQ_V01 ---->
            <---- QMI_WLANFW_BDF_DOWNLOAD_RESP_V01 ----
            ---- QMI_WLANFW_BDF_DOWNLOAD_REQ_V01 ---->
            <---- QMI_WLANFW_BDF_DOWNLOAD_RESP_V01 ----
            ---- QMI_WLANFW_M3_INFO_REQ_V01 ---->
            <---- QMI_WLANFW_M3_INFO_RESP_V01 ----
            <---- ATH11K_QMI_EVENT_FW_READY ----
            ---- QMI_WLANFW_WLAN_CFG_REQ_V01 ---->
            <---- QMI_WLANFW_WLAN_CFG_RESP_V01 ----
            ---- QMI_WLANFW_WLAN_MODE_REQ_V01 ---->
            <---- QMI_WLANFW_WLAN_MODE_RESP_V01 ----

This one basically removes the support for the QCA 4.4 kernel with 
IPQ_SUBSYSTEM_RESTART - which is the one we tried to use in the past. What is 
now the correct one to use and where can I find the info what qcom,rproc 
refers to in the DTS?

Kind regards,
	Sven

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