linux-kernel - Re: [PATCH 1/1] PCI: qcom: Add early fixup to set the max payload size for IPQ9574

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Date:   Mon, 24 Jul 2023 14:53:37 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Praveenkumar I <quic_ipkumar@...cinc.com>, mani@...nel.org,
        agross@...nel.org, andersson@...nel.org, lpieralisi@...nel.org,
        kw@...ux.com, robh@...nel.org, bhelgaas@...gle.com,
        linux-pci@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     quic_varada@...cinc.com, quic_devipriy@...cinc.com
Subject: Re: [PATCH 1/1] PCI: qcom: Add early fixup to set the max payload
 size for IPQ9574

On 24.07.2023 14:47, Praveenkumar I wrote:
> Set 256 bytes as payload size for IPQ9574 via early fixup. This allows
> PCIe RC to use the max payload size when a capable link partner is
> connected.
> 
> Signed-off-by: Praveenkumar I <quic_ipkumar@...cinc.com>
> ---
[...]

> 
> +static void qcom_fixup_mps_256(struct pci_dev *dev)
> +{
> +	pcie_set_mps(dev, 256);
Looks like setting "dev->pcie_mpss = 1" here would make the PCIe generic
code take care of this.

Konrad