linux-kernel - [PATCH v5 0/6] PAXB INTx support with proper model

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Message-Id: <1585205326-25326-1-git-send-email-srinath.mannam@broadcom.com>
Date:   Thu, 26 Mar 2020 12:18:40 +0530
From:   Srinath Mannam <srinath.mannam@...adcom.com>
To:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Ray Jui <rjui@...adcom.com>, Rob Herring <robh+dt@...nel.org>,
        Andrew Murray <andrew.murray@....com>,
        Mark Rutland <mark.rutland@....com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Arnd Bergmann <arnd@...db.de>
Cc:     bcm-kernel-feedback-list@...adcom.com, linux-pci@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Srinath Mannam <srinath.mannam@...adcom.com>
Subject: [PATCH v5 0/6] PAXB INTx support with proper model

This patch series adds PCIe legacy interrupt (INTx) support to the iProc
PCIe driver by modeling it with its own IRQ domain. All 4 interrupts INTA,
INTB, INTC, INTD share the same interrupt line connected to the GIC
in the system. This is now modeled by using its own IRQ domain.

Also update all relevant devicetree files to adapt to the new model.

This patch set is based on Linux-5.5-rc1.

Changes from v4:
  - Addressed Lorenzo's comments
    - Add iProc irq chip descriptor in the place of dummy irq chip to
      provide mask/un-mask and enable/disable handlers to configure
      individual INTx.

Changes from v3:
  - Addressed Andrew Murray's comments
  - Add change to dispose VIRQ when disabling INTx

Changes from v2:
  - Addressed Lorenzo's comments
    - Corrected INTx to PIN mapping.

Changes from v1:
  - Addressed Rob, Lorenzo, Arnd's comments
    - Used child node for interrupt controller.
  - Addressed Andy Shevchenko's comments
    - Replaced while loop with do-while.

Ray Jui (6):
  dt-bindings: pci: Update iProc PCI binding for INTx support
  PCI: iproc: Add INTx support with better modeling
  arm: dts: Change PCIe INTx mapping for Cygnus
  arm: dts: Change PCIe INTx mapping for NSP
  arm: dts: Change PCIe INTx mapping for HR2
  arm64: dts: Change PCIe INTx mapping for NS2

 .../devicetree/bindings/pci/brcm,iproc-pcie.txt    |  48 ++++++-
 arch/arm/boot/dts/bcm-cygnus.dtsi                  |  30 ++++-
 arch/arm/boot/dts/bcm-hr2.dtsi                     |  30 ++++-
 arch/arm/boot/dts/bcm-nsp.dtsi                     |  45 ++++++-
 arch/arm64/boot/dts/broadcom/northstar2/ns2.dtsi   |  28 +++-
 drivers/pci/controller/pcie-iproc.c                | 147 ++++++++++++++++++++-
 drivers/pci/controller/pcie-iproc.h                |   8 ++
 7 files changed, 309 insertions(+), 27 deletions(-)

-- 
2.7.4