Received-SPF: pass (google.com: domain of linux-kernel+bounces-6744-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.80.249 as permitted sender) client-ip=147.75.80.249;
Message-ID: <d1767b1d-0b80-4ece-8a35-18eed52a3f6e@collabora.com>
Date: Wed, 20 Dec 2023 11:30:38 +0100
Precedence: bulk
MIME-Version: 1.0
User-Agent: Mozilla Thunderbird
Subject: Re: [PATCH v3 3/3] arm64: dts: mediatek: mt8195: Add 'rx-fifo-depth'
 for cherry
Content-Language: en-US
To: Chunfeng Yun <chunfeng.yun@mediatek.com>,
 Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
 Rob Herring <robh+dt@kernel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: Conor Dooley <conor+dt@kernel.org>,
 Matthias Brugger <matthias.bgg@gmail.com>,
 Mathias Nyman <mathias.nyman@intel.com>, linux-usb@vger.kernel.org,
 linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org,
 devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
 Eddie Hung <eddie.hung@mediatek.com>, Macpaul Lin <macpaul.lin@mediatek.com>
References: <20231220025842.7082-1-chunfeng.yun@mediatek.com>
 <20231220025842.7082-3-chunfeng.yun@mediatek.com>
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
In-Reply-To: <20231220025842.7082-3-chunfeng.yun@mediatek.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit

Il 20/12/23 03:58, Chunfeng Yun ha scritto:
> Add the quirk property "rx-fifo-depth" to work around Gen1 isoc-in
> transfer issue which send out unexpected ACK even after device
> already finished the burst transfer with a short patcket, specially
> for a 4K camera device.
> 
> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
> ---
> v3: change value according to binding
> v2: use 'rx-fifo-depth' property
> ---
>   arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
> index dd5b89b73190..58593348b810 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
> @@ -1185,6 +1185,7 @@
>   

Can you please place rx-fifo-depth before power supplies?

after which,

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

Thanks,
Angelo

>   	vusb33-supply = <&mt6359_vusb_ldo_reg>;
>   	vbus-supply = <&usb_vbus>;
> +	rx-fifo-depth = <3>;
>   };
>   
>   &xhci1 {
> @@ -1192,6 +1193,7 @@
>   
>   	vusb33-supply = <&mt6359_vusb_ldo_reg>;
>   	vbus-supply = <&usb_vbus>;
> +	rx-fifo-depth = <3>;
>   };
>   
>   &xhci2 {