From: "Pali Rohár" <pali@kernel.org>
To: Hans Zhang <18255117159@163.com>
Cc: lpieralisi@kernel.org, kw@linux.com, bhelgaas@google.com,
heiko@sntech.de, thomas.petazzoni@bootlin.com,
manivannan.sadhasivam@linaro.org, yue.wang@Amlogic.com,
neil.armstrong@linaro.org, robh@kernel.org, jingoohan1@gmail.com,
khilman@baylibre.com, jbrunet@baylibre.com,
martin.blumenstingl@googlemail.com, linux-pci@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-amlogic@lists.infradead.org,
linux-rockchip@lists.infradead.org
Subject: Re: [PATCH v2 2/2] PCI: Remove redundant MPS configuration
Date: Fri, 25 Apr 2025 20:13:45 +0200 [thread overview]
Message-ID: <20250425181345.bybgcht5tweyg43k@pali> (raw)
In-Reply-To: <20250425095708.32662-3-18255117159@163.com>
On Friday 25 April 2025 17:57:08 Hans Zhang wrote:
> diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c
> index a29796cce420..d8852892994a 100644
> --- a/drivers/pci/controller/pci-aardvark.c
> +++ b/drivers/pci/controller/pci-aardvark.c
> @@ -549,9 +549,7 @@ static void advk_pcie_setup_hw(struct advk_pcie *pcie)
> reg = advk_readl(pcie, PCIE_CORE_PCIEXP_CAP + PCI_EXP_DEVCTL);
> reg &= ~PCI_EXP_DEVCTL_RELAX_EN;
> reg &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
> - reg &= ~PCI_EXP_DEVCTL_PAYLOAD;
> reg &= ~PCI_EXP_DEVCTL_READRQ;
> - reg |= PCI_EXP_DEVCTL_PAYLOAD_512B;
> reg |= PCI_EXP_DEVCTL_READRQ_512B;
> advk_writel(pcie, reg, PCIE_CORE_PCIEXP_CAP + PCI_EXP_DEVCTL);
>
> --
> 2.25.1
>
Please do not remove this code. It is required part of the
initialization of the aardvark PCI controller at the specific phase,
as defined in the Armada 3700 Functional Specification.
next prev parent reply other threads:[~2025-04-25 18:28 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-25 9:57 [PATCH v2 0/2] PCI: Configure max payload size on pci_host_probe Hans Zhang
2025-04-25 9:57 ` [PATCH v2 1/2] PCI: Configure root port MPS to hardware maximum during host probing Hans Zhang
2025-04-25 10:23 ` Niklas Cassel
2025-04-25 10:56 ` Hans Zhang
2025-04-25 13:47 ` Niklas Cassel
2025-04-25 14:17 ` Hans Zhang
2025-04-25 9:57 ` [PATCH v2 2/2] PCI: Remove redundant MPS configuration Hans Zhang
2025-04-25 10:17 ` Niklas Cassel
2025-04-25 10:26 ` Hans Zhang
2025-04-25 11:59 ` neil.armstrong
2025-04-25 14:20 ` Hans Zhang
2025-04-25 18:13 ` Pali Rohár [this message]
2025-04-26 15:02 ` Hans Zhang
2025-04-26 15:06 ` Pali Rohár
2025-04-26 15:20 ` Hans Zhang
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