linux-kernel - Re: [PATCH v3 12/13] PCI: brcmstb: Set bus max burst size by chip type

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Message-ID: <a3ec9783-5859-9729-e79a-e42b3ca02242@gmail.com>
Date:   Wed, 3 Jun 2020 13:06:05 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Jim Quinlan <james.quinlan@...adcom.com>,
        linux-pci@...r.kernel.org, Christoph Hellwig <hch@....de>,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        bcm-kernel-feedback-list@...adcom.com
Cc:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Rob Herring <robh@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE" 
        <linux-rpi-kernel@...ts.infradead.org>,
        "moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 12/13] PCI: brcmstb: Set bus max burst size by chip
 type



On 6/3/2020 12:20 PM, Jim Quinlan wrote:
> From: Jim Quinlan <jquinlan@...adcom.com>
> 
> The proper value of the parameter SCB_MAX_BURST_SIZE varies per chip.  The
> 2711 family requires 128B whereas other devices can employ 512.  The
> assignment is complicated by the fact that the values for this two-bit
> field have different meanings;
> 
>   Value   Type_Generic    Type_7278

It looks like Type_Generic and Type_7278 should be swapped in this
description. Other than that:

Acked-by: Florian Fainelli <f.fainelli@...il.com>

> 
>      00       Reserved         128B
>      01           128B         256B
>      10           256B         512B
>      11           512B     Reserved
-- 
Florian