Re: [PATCH v5 0/6] Add SiFive FU740 PCIe host controller driver support

From: Greentime Hu <greentime.hu@sifive.com>
To: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>,
	hes@sifive.com,  Erik Danie <erik.danie@sifive.com>,
	Zong Li <zong.li@sifive.com>,
	 Bjorn Helgaas <bhelgaas@google.com>,
	robh+dt@kernel.org, Albert Ou <aou@eecs.berkeley.edu>,
	 Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>,
	 Philipp Zabel <p.zabel@pengutronix.de>,
	alex.dewar90@gmail.com, khilman@baylibre.com,
	 hayashi.kunihiko@socionext.com, vidyas@nvidia.com,
	jh80.chung@samsung.com,  linux-pci@vger.kernel.org,
	devicetree@vger.kernel.org,
	 linux-riscv <linux-riscv@lists.infradead.org>,
	 Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	linux-clk@vger.kernel.org, Bjorn Helgaas <helgaas@kernel.org>
Subject: Re: [PATCH v5 0/6] Add SiFive FU740 PCIe host controller driver support
Date: Fri, 9 Apr 2021 10:23:21 +0800	[thread overview]
Message-ID: <CAHCEehK5vf5V_6McexFQPbcxGeC2SEb_3SXiGc2ASkcELe3fXg@mail.gmail.com> (raw)
In-Reply-To: <20210408162539.GA32036@lpieralisi>

Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> 於 2021年4月9日 週五 上午12:25寫道：
>
> On Tue, Apr 06, 2021 at 05:26:28PM +0800, Greentime Hu wrote:
> > This patchset includes SiFive FU740 PCIe host controller driver. We also
> > add pcie_aux clock and pcie_power_on_reset controller to prci driver for
> > PCIe driver to use it.
> >
> > This is tested with e1000e: Intel(R) PRO/1000 Network Card, AMD Radeon R5
> > 230 graphics card and SP M.2 PCIe Gen 3 SSD in SiFive Unmatched based on
> > v5.11 Linux kernel.
> >
> > Changes in v5:
> >  - Fix typo in comments
> >  - Keep comments style consistent
> >  - Refine some error handling codes
> >  - Remove unneeded header file including
> >  - Merge fu740_pcie_ltssm_enable implementation to fu740_pcie_start_link
> >
> > Changes in v4:
> >  - Fix Wunused-but-set-variable warning in prci driver
> >
> > Changes in v3:
> >  - Remove items that has been defined
> >  - Refine format of sifive,fu740-pcie.yaml
> >  - Replace perstn-gpios with the common one
> >  - Change DBI mapping space to 2GB from 4GB
> >  - Refine drivers/reset/Kconfig
> >
> > Changes in v2:
> >  - Refine codes based on reviewers' feedback
> >  - Remove define and use the common one
> >  - Replace __raw_writel with writel_relaxed
> >  - Split fu740_phyregreadwrite to write function
> >  - Use readl_poll_timeout in stead of while loop checking
> >  - Use dwc common codes
> >  - Use gpio descriptors and the gpiod_* api.
> >  - Replace devm_ioremap_resource with devm_platform_ioremap_resource_byname
> >  - Replace devm_reset_control_get with devm_reset_control_get_exclusive
> >  - Add more comments for delay and sleep
> >  - Remove "phy ? x : y" expressions
> >  - Refine code logic to remove possible infinite loop
> >  - Replace magic number with meaningful define
> >  - Remove fu740_pcie_pm_ops
> >  - Use builtin_platform_driver
> >
> > Greentime Hu (5):
> >   clk: sifive: Add pcie_aux clock in prci driver for PCIe driver
> >   clk: sifive: Use reset-simple in prci driver for PCIe driver
> >   MAINTAINERS: Add maintainers for SiFive FU740 PCIe driver
> >   dt-bindings: PCI: Add SiFive FU740 PCIe host controller
> >   riscv: dts: Add PCIe support for the SiFive FU740-C000 SoC
> >
> > Paul Walmsley (1):
> >   PCI: fu740: Add SiFive FU740 PCIe host controller driver
>
> I can pull the patches above into the PCI tree (but will drop patch 6 -
> dts changes), is it OK for you ? Please let me know how you would like
> to upstream it.
>

Hi Lorenzo,

Thank you.
I am ok with it. So I should ask Palmer to pick patch 6 dts changes to
RISC-V tree?

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