linux-kernel - Re: [PATCH v9 0/5] Enable rk356x PCIe controller

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Message-ID: <CAMdYzYrzq5C61T2NYmHr0g_P7Mm25TUfaDV3iz2LkV8-jpV4kA@mail.gmail.com>
Date:   Tue, 10 May 2022 17:11:18 -0400
From:   Peter Geis <pgwipeout@...il.com>
To:     "open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
        Philipp Zabel <p.zabel@...gutronix.de>
Cc:     Heiko Stuebner <heiko@...ech.de>, Marc Zyngier <maz@...nel.org>,
        PCI <linux-pci@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        arm-mail-list <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v9 0/5] Enable rk356x PCIe controller

On Fri, Apr 29, 2022 at 8:38 AM Peter Geis <pgwipeout@...il.com> wrote:
>
> This series enables the DesignWare based PCIe controller on the rk356x
> series of chips. We drop the fallback to the core driver due to
> compatibility issues. We reset the PCIe controller at driver probe to
> prevent issues in the future when firmware / kexec leaves the controller
> in an unknown state. We add support for legacy interrupts for cards that
> lack MSI support (which is partially broken currently). We then add the
> device tree nodes to enable PCIe on the Quartz64 Model A.

Good Evening,

Just a gentle ping to see if there's anything outstanding here.

Very Respectfully,
Peter Geis

>
> Patch 1 drops the snps,dw,pcie fallback from the dt-binding
> Patch 2 resets the PCIe controller to prevent configuration bugs
> Patch 3 adds legacy interrupt support to the driver
> Patch 4 adds the device tree binding to the rk356x.dtsi
> Patch 5 enables the PCIe controller on the Quartz64-A
>
> Changelog:
> v9:
> - move reset_control_assert out of rockchip_pcie_resource_get
> - fix various formatting mistakes
> - fix a checkpatch warning
>
> v8:
> - add core reset patch
> - simplify IRQ enable/disable functions
> - drop spinlock
> - only enable/disable IRQ requested
> - only pass the IRQ register bits used to irq functions
>
> v7:
> - drop assigned-clocks
>
> v6:
> - fix a ranges issue
> - point to GIC instead of ITS
>
> v5:
> - fix incorrect series (apologies for the v4 spam)
>
> v4:
> - drop the ITS modification, poor compatibility is better than
>   completely broken
>
> v3:
> - drop select node from dt-binding
> - convert to for_each_set_bit
> - convert to generic_handle_domain_irq
> - drop unncessary dev_err
> - reorder irq_chip items
> - change to level_irq
> - install the handler after initializing the domain
>
> v2:
> - Define PCIE_CLIENT_INTR_STATUS_LEGACY
> - Fix PCIE_LEGACY_INT_ENABLE to only enable the RC interrupts
> - Add legacy interrupt enable/disable support
>
>
> Peter Geis (5):
>   dt-bindings: PCI: Remove fallback from Rockchip DesignWare binding
>   PCI: rockchip-dwc: Reset core at driver probe
>   PCI: rockchip-dwc: Add legacy interrupt support
>   arm64: dts: rockchip: Add rk3568 PCIe2x1 controller
>   arm64: dts: rockchip: Enable PCIe controller on quartz64-a
>
>  .../bindings/pci/rockchip-dw-pcie.yaml        |  12 +-
>  .../boot/dts/rockchip/rk3566-quartz64-a.dts   |  34 +++++
>  arch/arm64/boot/dts/rockchip/rk356x.dtsi      |  52 ++++++++
>  drivers/pci/controller/dwc/pcie-dw-rockchip.c | 119 +++++++++++++++---
>  4 files changed, 191 insertions(+), 26 deletions(-)
>
> --
> 2.25.1
>