Re: [PATCH v6 0/3] PCI: IPQ6018 platform support

From: Bjorn Helgaas <helgaas@kernel.org>
To: Robert Marko <robert.marko@sartura.hr>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	Baruch Siach <baruch@tkos.co.il>,
	Bjorn Andersson <bjorn.andersson@linaro.org>,
	Andy Gross <agross@kernel.org>,
	Selvam Sathappan Periakaruppan <speriaka@codeaurora.org>,
	Kathiravan T <kathirav@codeaurora.org>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Rob Herring <robh+dt@kernel.org>,
	Thierry Reding <thierry.reding@gmail.com>,
	Jonathan Hunter <jonathanh@nvidia.com>,
	Jingoo Han <jingoohan1@gmail.com>,
	Gustavo Pimentel <gustavo.pimentel@synopsys.com>,
	Bryan O'Donoghue <pure.logic@nexus-software.ie>,
	linux-pci@vger.kernel.org,
	linux-arm-msm <linux-arm-msm@vger.kernel.org>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	linux-tegra@vger.kernel.org,
	Stanimir Varbanov <svarbanov@mm-sol.com>
Subject: Re: [PATCH v6 0/3] PCI: IPQ6018 platform support
Date: Wed, 8 Jun 2022 15:24:20 -0500	[thread overview]
Message-ID: <20220608202420.GA418223@bhelgaas> (raw)
In-Reply-To: <CA+HBbNFo9QCExiA9T4Mn4t5vvir79xF3R9F6OLZa0m5Bzpte3w@mail.gmail.com>

[+cc Stanimir, beginning of thread at
https://lore.kernel.org/r/cover.1644234441.git.baruch@tkos.co.il]

On Tue, Jun 07, 2022 at 03:12:19PM +0200, Robert Marko wrote:
> On Wed, May 11, 2022 at 4:03 PM Lorenzo Pieralisi
> <lorenzo.pieralisi@arm.com> wrote:
> >
> > On Tue, Apr 12, 2022 at 05:12:59PM +0100, Lorenzo Pieralisi wrote:
> > > On Mon, Feb 07, 2022 at 04:51:23PM +0200, Baruch Siach wrote:
> > > > This series adds support for the single PCIe lane on IPQ6018 SoCs. The code is
> > > > ported from downstream Codeaurora v5.4 kernel. The main difference from
> > > > downstream code is the split of PCIe registers configuration from .init to
> > > > .post_init, since it requires phy_power_on().
> > > >
> > > > Tested on IPQ6010 based hardware.
> > > >
> > > > Changes in v6:
> > > >
> > > >   * Drop DT patch applied to the qcom tree
> > > >
> > > >   * Normalize driver changes subject line
> > > >
> > > >   * Add a preparatory patch to rename PCIE_CAP_LINK1_VAL to PCIE_CAP_SLOT_VAL,
> > > >     and define it using PCI_EXP_SLTCAP_* macros
> > > >
> > > >   * Drop a vague comment about ASPM configuration
> > > >
> > > >   * Add a comment about the source of delay periods
> > > >
> > > > Changes in v5:
> > > >
> > > >   * Remove comments from qcom_pcie_init_2_9_0() (Bjorn Andersson)
> > > >
> > > > Changes in v4:
> > > >
> > > >   * Drop applied DT bits
> > > >
> > > >   * Add max-link-speed that was missing from the applied v2 patch
> > > >
> > > >   * Rebase the driver on v5.16-rc3
> > > >
> > > > Changes in v3:
> > > >
> > > >   * Drop applied patches
> > > >
> > > >   * Rely on generic code for speed setup
> > > >
> > > >   * Drop unused macros
> > > >
> > > >   * Formatting fixes
> > > >
> > > > Changes in v2:
> > > >
> > > >   * Add patch moving GEN3_RELATED macros to a common header
> > > >
> > > >   * Drop ATU configuration from pcie-qcom
> > > >
> > > >   * Remove local definition of common registers
> > > >
> > > >   * Use bulk clk and reset APIs
> > > >
> > > >   * Remove msi-parent from device-tree
> > > >
> > > > Baruch Siach (2):
> > > >   PCI: dwc: tegra: move GEN3_RELATED DBI register to common header
> > > >   PCI: qcom: Define slot capabilities using PCI_EXP_SLTCAP_*
> > > >
> > > > Selvam Sathappan Periakaruppan (1):
> > > >   PCI: qcom: Add IPQ60xx support
> > > >
> > > >  drivers/pci/controller/dwc/pcie-designware.h |   7 +
> > > >  drivers/pci/controller/dwc/pcie-qcom.c       | 155 ++++++++++++++++++-
> > > >  drivers/pci/controller/dwc/pcie-tegra194.c   |   6 -
> > > >  3 files changed, 160 insertions(+), 8 deletions(-)
> > >
> > > Hi Bjorn, Andy,
> > >
> > > any feedback on this series please ?
> >
> > Any feedback on these patches please ?
> 
> Finally dug the CP01, and for me, it works, so:
> Tested-by: Robert Marko <robert.marko@sartura.hr>

This mainly affects pcie-qcom.c, so it looks like Stanimir should have
been copied on this, but wasn't.  Please include him on the next
iteration.

This will also need to be updated to apply on v5.19-rc1:

  03:21:47 ~/linux (next)$ git checkout -b wip/baruch-ipq6018-v6 v5.19-rc1
  Switched to a new branch 'wip/baruch-ipq6018-v6'
  03:21:55 ~/linux (wip/baruch-ipq6018-v6)$ git am m/v6_20220207_baruch_pci_ipq6018_platform_support.mbx
  Applying: PCI: dwc: tegra: move GEN3_RELATED DBI register to common header
  Applying: PCI: qcom: Define slot capabilities using PCI_EXP_SLTCAP_*
  Applying: PCI: qcom: Add IPQ60xx support
  error: patch failed: drivers/pci/controller/dwc/pcie-qcom.c:1531
  error: drivers/pci/controller/dwc/pcie-qcom.c: patch does not apply
  Patch failed at 0003 PCI: qcom: Add IPQ60xx support