From: Thomas Gleixner <tglx@kernel.org>
To: Marek Vasut <marek.vasut+renesas@mailbox.org>, linux-pci@vger.kernel.org
Cc: "Marek Vasut" <marek.vasut+renesas@mailbox.org>,
"Marc Zyngier" <maz@kernel.org>,
"Yoshihiro Shimoda" <yoshihiro.shimoda.uh@renesas.com>,
"Krzysztof Wilczyński" <kwilczynski@kernel.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Catalin Marinas" <catalin.marinas@arm.com>,
"Conor Dooley" <conor+dt@kernel.org>,
"Geert Uytterhoeven" <geert+renesas@glider.be>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Manivannan Sadhasivam" <mani@kernel.org>,
"Rob Herring" <robh@kernel.org>,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-renesas-soc@vger.kernel.org
Subject: Re: [PATCH v3 4/5] irqchip/gic-v3: Add Renesas R-Car Gen4 erratum workaround
Date: Fri, 03 Jul 2026 00:18:55 +0200 [thread overview]
Message-ID: <87wlvdm3w0.ffs@fw13> (raw)
In-Reply-To: <20260701203918.63189-5-marek.vasut+renesas@mailbox.org>
On Wed, Jul 01 2026 at 22:37, Marek Vasut wrote:
> Renesas R-Car S4/V4H/V4M GIC600 integration has address width for AXI
> or APB interface configured to 32 bit, it can therefore access only
> the first 4 GiB of physical address space. This information comes from
> R-Car V4H Interface Specification sheet, there is currently no technical
> update number assigned to this limitation. Further input from hardware
> engineer indicates that this limitation also applies to R-Car S4 and V4M.
> Name the limitation GEN4GICITS1, and add a driver quirk to mitigate this
> limitation.
>
> The quirk is keyed on the combination of the GIC implementation
> and the platform identification in the device tree.
>
> Acked-by: Marc Zyngier <maz@kernel.org>
> Co-developed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Assuming this goes through the PCI tree:
Acked-by: Thomas Gleixner <tglx@kernel.org>
next prev parent reply other threads:[~2026-07-02 22:18 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-01 20:37 [PATCH v3 0/5] PCI: rcar-gen4: irqchip/gic-v3: Handle GIC ITS Marek Vasut
2026-07-01 20:37 ` [PATCH v3 1/5] PCI: dwc: Determine whether iMSI is used before calling .init Marek Vasut
2026-07-06 16:43 ` Manivannan Sadhasivam
2026-07-06 17:48 ` Marek Vasut
2026-07-07 15:36 ` Manivannan Sadhasivam
2026-07-07 20:24 ` Marek Vasut
2026-07-01 20:37 ` [PATCH v3 2/5] PCI: rcar-gen4: Configure AXIINTC if iMSI-RX not used Marek Vasut
2026-07-05 13:35 ` Marek Vasut
2026-07-01 20:37 ` [PATCH v3 3/5] irqchip/gic-v3: Refactor GIC600 limited to 32bit PA erratum handling Marek Vasut
2026-07-01 20:37 ` [PATCH v3 4/5] irqchip/gic-v3: Add Renesas R-Car Gen4 erratum workaround Marek Vasut
2026-07-02 22:18 ` Thomas Gleixner [this message]
2026-07-01 20:37 ` [PATCH v3 5/5] arm64: dts: renesas: r8a779g0: Add GICv3 ITS and update PCIe nodes Marek Vasut
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