linux-kernel - [PATCH v4 0/2] PCI: mediatek-gen3: Support controlling power supplies

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Message-ID: <20231106061220.21485-1-jian.yang@mediatek.com>
Date:   Mon, 6 Nov 2023 14:12:18 +0800
From:   Jian Yang <jian.yang@...iatek.com>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Rob Herring <robh@...nel.org>,
        Jianjun Wang <jianjun.wang@...iatek.com>
CC:     <linux-pci@...r.kernel.org>, <linux-mediatek@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        <Chuanjia.Liu@...iatek.com>, <Jieyy.Yang@...iatek.com>,
        <Qizhong.Cheng@...iatek.com>, <Jianguo.Zhang@...iatek.com>,
        Jian Yang <jian.yang@...iatek.com>
Subject: [PATCH v4 0/2] PCI: mediatek-gen3: Support controlling power supplies

Add support for controlling power supplies and reset GPIO of a downstream
component in Mediatek's PCIe GEN3 controller driver.

Changes in v4:
1. Rename power supplies properties in DT binding and driver.
2. Reorder variables alphabetically.
3. Use 'dev_err_probe' to do some error handling stuff.

Changes in v3:
1. Modify description of power supply properties in DT binding.
2. Remove unused header files.
3. Use 'device_wakeup_path' to determine whether the downstream component
needs to skip the reset process in system suspend scenarios.

Changes in v2:
1. Remove an unnecessary property in dt-bindings file.
2. Use the flag 'GPIOD_OUT_LOW' to set initial state of a downstream
component's reset GPIO.
3. Keep downstream component powered on in suspend state if it is capable
of waking up the system.

jian.yang (2):
  dt-bindings: PCI: mediatek-gen3: Add support for controlling power and
    reset
  PCI: mediatek-gen3: Add power and reset control feature for downstream
    component

 .../bindings/pci/mediatek-pcie-gen3.yaml      | 30 +++++++
 drivers/pci/controller/pcie-mediatek-gen3.c   | 89 ++++++++++++++++++-
 2 files changed, 118 insertions(+), 1 deletion(-)

-- 
2.18.0