linux-kernel - [PATCH v3 0/7] Add PCIe and USB device-tree support for J722S

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Date: Fri, 24 May 2024 14:35:07 +0530
From: Siddharth Vadapalli <s-vadapalli@...com>
To: <nm@...com>, <vigneshr@...com>, <afd@...com>, <kristo@...nel.org>,
        <robh@...nel.org>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
        <rogerq@...nel.org>
CC: <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <u-kumar1@...com>,
        <danishanwar@...com>, <srk@...com>, <s-vadapalli@...com>
Subject: [PATCH v3 0/7] Add PCIe and USB device-tree support for J722S

Hello,

This series adds device-tree support for PCIe and USB on J722S SoC.
This series is the v3 for the v2 USB series at:
https://lore.kernel.org/r/20240513114443.16350-1-r-gunasekaran@ti.com/
and is also the v1 series for enabling PCIe device-tree support for J722S.

Since the v2 USB series combined portions of the PCIe changes incorrectly,
I have updated this series to contain USB specific changes in the first 3
patches of this series while moving the PCIe specific changes to the
remaining 4 patches in this series.

Series is based on linux-next tagged next-20240524.

v2 for USB:
https://lore.kernel.org/r/20240513114443.16350-1-r-gunasekaran@ti.com/
Changes since v2 USB series:
- For patch 1:
  => Renamed serdes0_ln_ctrl to serdes_ln_ctrl to keep the format
  consistent across SoCs where a single node is sufficient to
  represent the Lane-Muxing for all instances of the Serdes.
- For patch 2:
  => No changes since v2.
- For patch 3:
  => Renamed serdes0_ln_ctrl to serdes_ln_ctrl corresponding to the change
  made in patch 1.
  => Dropped Serdes1 idle-states since it has not yet been added in the
  serdes_ln_ctrl node.
  => Dropped Serdes1 specific Lane-Muxing macros in "k3-serdes.h".
  => Added newline after /* J722S */ in "k3-serdes.h" following the file
  convention.

v1 for USB:
https://lore.kernel.org/r/20240429120932.11456-1-r-gunasekaran@ti.com/
Changes since v1 USB series:
- Introduced k3-j722s-main.dtsi newly to add the main domain
  peripherals that are present additionally in J722S as suggested by
  Andrew Davis.
- Used generic node names as suggested by Roger Quadros.
- Removed the aliases for usb as suggested by Rob Herring.

This series has no dependencies and has been tested on J722S-EVM.
Logs testing PCIe functionality with an NVMe SSD connected to the
J722S-EVM and testing USB functionality limited to "lsusb" output:
https://gist.github.com/Siddharth-Vadapalli-at-TI/6a9cdcec24add0114e63db736b3e23fb

Regards,
Siddharth.

Ravi Gunasekaran (3):
  arm64: dts: ti: k3-j722s-main: Add support for SERDES0
  arm64: dts: ti: k3-j722s-main: Redefine USB1 node description
  arm64: dts: ti: k3-j722s-evm: Update USB0 and USB1

Siddharth Vadapalli (4):
  arm64: dts: ti: k3-serdes: Add Serdes1 lane-muxing macros for J722S
  arm64: dts: ti: k3-j722s: Add lane mux for Serdes1
  arm64: dts: ti: k3-j722s-main: Add WIZ1 and Serdes1 nodes
  arm64: dts: ti: k3-j722s: Add support for PCIe0

 arch/arm64/boot/dts/ti/k3-j722s-evm.dts   |  72 +++++++++
 arch/arm64/boot/dts/ti/k3-j722s-main.dtsi | 177 ++++++++++++++++++++++
 arch/arm64/boot/dts/ti/k3-j722s.dtsi      |   5 +
 arch/arm64/boot/dts/ti/k3-serdes.h        |   8 +
 4 files changed, 262 insertions(+)
 create mode 100644 arch/arm64/boot/dts/ti/k3-j722s-main.dtsi

-- 
2.40.1