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Date:   Mon, 23 Oct 2023 14:32:17 +0200
From:   AngeloGioacchino Del Regno 
To:     Jianjun Wang <>,
        Lorenzo Pieralisi <>,
        Krzysztof WilczyƄski <>,
        Rob Herring <>,
        Bjorn Helgaas <>,
        Matthias Brugger <>
Cc:     Ryder Lee <>,,,,,,,,
Subject: Re: [PATCH v2] PCI: mediatek-gen3: Fix translation window

Il 23/10/23 10:14, Jianjun Wang ha scritto:
> The size of translation table should be a power of 2, using fls()
> cannot get the proper value when the size is not a power of 2. For
> example, fls(0x3e00000) - 1 = 25, hence the PCIe translation window
> size will be set to 0x2000000 instead of the expected size 0x3e00000.
> Fix translation window by splitting the MMIO space to multiple tables if
> its size is not a power of 2.
> Fixes: d3bf75b579b9 ("PCI: mediatek-gen3: Add MediaTek Gen3 driver for MT8192")
> Signed-off-by: Jianjun Wang <>

Reviewed-by: AngeloGioacchino Del Regno <>

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