linux-kernel - Re: [PATCH v2 0/4] soc: qcom: Introduce PMIC GLINK

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Message-ID: <9e831252-7198-7983-8a52-0e745688452d@linaro.org>
Date:   Fri, 13 Jan 2023 17:10:17 +0000
From:   Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To:     Bjorn Andersson <quic_bjorande@...cinc.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Sebastian Reichel <sre@...nel.org>
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        Subbaraman Narayanamurthy <quic_subbaram@...cinc.com>,
        Johan Hovold <johan@...nel.org>,
        Neil Armstrong <neil.armstrong@...aro.org>
Subject: Re: [PATCH v2 0/4] soc: qcom: Introduce PMIC GLINK

On 13/01/2023 04:11, Bjorn Andersson wrote:
> This implements the base PMIC GLINK driver, a power_supply driver and a
> driver for the USB Type-C altmode protocol. This has been tested and
> shown to provide battery information, USB Type-C switch and mux requests
> and DisplayPort notifications on SC8180X, SC8280XP and SM8350.
> 
> Bjorn Andersson (4):
>    dt-bindings: soc: qcom: Introduce PMIC GLINK binding
>    soc: qcom: pmic_glink: Introduce base PMIC GLINK driver
>    soc: qcom: pmic_glink: Introduce altmode support
>    power: supply: Introduce Qualcomm PMIC GLINK power supply
> 
>   .../bindings/soc/qcom/qcom,pmic-glink.yaml    |  102 ++
>   drivers/power/supply/Kconfig                  |    9 +
>   drivers/power/supply/Makefile                 |    1 +
>   drivers/power/supply/qcom_battmgr.c           | 1421 +++++++++++++++++
>   drivers/soc/qcom/Kconfig                      |   15 +
>   drivers/soc/qcom/Makefile                     |    2 +
>   drivers/soc/qcom/pmic_glink.c                 |  336 ++++
>   drivers/soc/qcom/pmic_glink_altmode.c         |  477 ++++++
>   include/linux/soc/qcom/pmic_glink.h           |   32 +
>   9 files changed, 2395 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,pmic-glink.yaml
>   create mode 100644 drivers/power/supply/qcom_battmgr.c
>   create mode 100644 drivers/soc/qcom/pmic_glink.c
>   create mode 100644 drivers/soc/qcom/pmic_glink_altmode.c
>   create mode 100644 include/linux/soc/qcom/pmic_glink.h
> 

How does the USB PHY and a USB redriver fit into this ?

Is the host supposed to manage both/neither ? Is the DSP responsible for 
configuring the PHY lanes and the turnaround on orientation switch ?

---
bod