From: Marek Vasut <marek.vasut@mailbox.org>
To: "Koichiro Den" <den@valinux.co.jp>,
"Marek Vasut" <marek.vasut+renesas@mailbox.org>,
"Yoshihiro Shimoda" <yoshihiro.shimoda.uh@renesas.com>,
"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Krzysztof Wilczyński" <kwilczynski@kernel.org>,
"Manivannan Sadhasivam" <mani@kernel.org>,
"Rob Herring" <robh@kernel.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
"Geert Uytterhoeven" <geert+renesas@glider.be>,
"Magnus Damm" <magnus.damm@gmail.com>,
"Jingoo Han" <jingoohan1@gmail.com>
Cc: Philipp Zabel <p.zabel@pengutronix.de>,
Frank Li <Frank.Li@nxp.com>, Niklas Cassel <cassel@kernel.org>,
Wilfred Mallawa <wilfred.mallawa@wdc.com>,
Serge Semin <fancer.lancer@gmail.com>,
linux-pci@vger.kernel.org, linux-renesas-soc@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 07/15] PCI: rcar-gen4: Separate hardware setup from resource acquisition
Date: Sun, 4 Oct 2026 01:41:13 +0200 [thread overview]
Message-ID: <0c5c60ea-1fc7-4f00-baff-065f24407240@mailbox.org> (raw)
In-Reply-To: <20260928165230.3397664-8-den@valinux.co.jp>
On 9/28/26 6:52 PM, Koichiro Den wrote:
> Factor out the hardware setup needed by Root Port recovery into helpers.
> Recovery needs to reset and restore the controller while keeping its
> clocks enabled and the Gen5 PHY initialized.
>
> - From rcar_gen4_pcie_common_init(), extract the power reset and mode
> setup. Leave clock enabling and Application/Local reset control in
> common_init(), so recovery can keep the APP registers accessible.
>
> - From the V4H/V4M and Gen5 .init() callbacks, extract the SoC-specific
> register setup. This allows recovery to restore those settings without
> taking another clock or PHY initialization reference.
>
> - From rcar_gen4_pcie_host_init(), extract the Root Port register setup
> and PERST# release. Both paths need this host-specific sequence after
> the per-SoC initialization or reset.
>
> No functional changes.
>
> Signed-off-by: Koichiro Den <den@valinux.co.jp>
Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
next prev parent reply other threads:[~2026-10-03 23:41 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-28 16:52 [PATCH v2 00/15] PCI: rcar-gen4: Recover from link down and route Root Port interrupts Koichiro Den
2026-09-28 16:52 ` [PATCH v2 01/15] PCI: dwc: Add Renesas to the RAS DES VSEC list Koichiro Den
2026-09-28 16:52 ` [PATCH v2 02/15] PCI: rcar-gen4: Check live link status in link_up() Koichiro Den
2026-10-03 18:29 ` Marek Vasut
2026-10-03 18:51 ` Marek Vasut
2026-10-05 4:22 ` Koichiro Den
2026-10-05 5:59 ` Marek Vasut
2026-09-28 16:52 ` [PATCH v2 03/15] dt-bindings: PCI: rcar-gen4: Add optional "aer" interrupt Koichiro Den
2026-09-30 10:31 ` Krzysztof Kozlowski
2026-10-03 20:00 ` Marek Vasut
2026-09-28 16:52 ` [PATCH v2 04/15] PCI: dwc: Export dw_handle_msi_irq() Koichiro Den
2026-10-03 20:02 ` Marek Vasut
2026-09-28 16:52 ` [PATCH v2 05/15] PCI: rcar-gen4: Move deinitialization helpers before SoC initialization Koichiro Den
2026-10-03 20:23 ` Marek Vasut
2026-09-28 16:52 ` [PATCH v2 06/15] PCI: rcar-gen4: Assert resets when Gen5 PHY initialization fails Koichiro Den
2026-10-03 21:34 ` Marek Vasut
2026-09-28 16:52 ` [PATCH v2 07/15] PCI: rcar-gen4: Separate hardware setup from resource acquisition Koichiro Den
2026-10-03 23:41 ` Marek Vasut [this message]
2026-09-28 16:52 ` [PATCH v2 08/15] PCI: rcar-gen4: Add a controller reinitialization callback Koichiro Den
2026-10-03 23:54 ` Marek Vasut
2026-10-05 4:31 ` Koichiro Den
2026-09-28 16:52 ` [PATCH v2 09/15] PCI: rcar-gen4: Add Root Port reset support Koichiro Den
2026-10-04 0:11 ` Marek Vasut
2026-10-05 6:14 ` Koichiro Den
2026-09-28 16:52 ` [PATCH v2 10/15] PCI: rcar-gen4: Take over the iMSI-RX interrupt Koichiro Den
2026-09-29 17:43 ` Geert Uytterhoeven
2026-09-30 6:38 ` Koichiro Den
2026-10-04 1:17 ` Marek Vasut
2026-10-04 0:53 ` Marek Vasut
2026-09-28 16:52 ` [PATCH v2 11/15] PCI: rcar-gen4: Recover the Root Port on link down Koichiro Den
2026-10-04 1:38 ` Marek Vasut
2026-09-28 16:52 ` [PATCH v2 12/15] PCI: dwc: Let glue drivers hide the Root Port MSI capabilities Koichiro Den
2026-09-28 16:52 ` [PATCH v2 13/15] PCI: rcar-gen4: Route Root Port AER to a virtual Root Port IRQ Koichiro Den
2026-10-04 2:52 ` Marek Vasut
2026-09-28 16:52 ` [PATCH v2 14/15] PCI: rcar-gen4: Route Root Port PME and bandwidth notifications Koichiro Den
2026-10-04 4:40 ` Marek Vasut
2026-09-28 16:52 ` [PATCH v2 15/15] arm64: dts: renesas: r8a779f0: Describe the PCIe AER interrupts Koichiro Den
2026-10-03 20:00 ` Marek Vasut
2026-10-03 17:46 ` [PATCH v2 00/15] PCI: rcar-gen4: Recover from link down and route Root Port interrupts Marek Vasut
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