From: Ravi Gunasekaran <r-gunasekaran@ti.com>
To: Roger Quadros <rogerq@kernel.org>, <nm@ti.com>, <afd@ti.com>,
<vigneshr@ti.com>, <kristo@kernel.org>, <robh+dt@kernel.org>,
<krzysztof.kozlowski+dt@linaro.org>, <s-vadapalli@ti.com>,
<vaishnav.a@ti.com>
Cc: <linux-arm-kernel@lists.infradead.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [EXTERNAL] Re: [PATCH v14 4/8] arm64: dts: ti: k3-j721s2-common-proc-board: Enable SERDES0
Date: Tue, 25 Apr 2023 17:46:18 +0530 [thread overview]
Message-ID: <b66ea55a-fc9a-8a3f-5b06-247769c50087@ti.com> (raw)
In-Reply-To: <86ab17b2-d35a-16e2-7791-9e7a13c8e632@kernel.org>
Roger,
On 25/04/23 5:15 pm, Roger Quadros wrote:
> Hi,
>
> On 31/03/2023 12:00, Ravi Gunasekaran wrote:
>> From: Aswath Govindraju <a-govindraju@ti.com>
>>
>> Configure first lane to PCIe, the second lane to USB and the last two lanes
>> to eDP. Also, add sub-nodes to SERDES0 DT node to represent SERDES0 is
>> connected to PCIe.
>
> Is USB0 expected to work in super-speed on this board?
> If yes then you need to add USB0 lane information as well.
> Otherwise please ignore my comment.
>
The SerDes on J721S2 can simultaneously support only two protocols.
By default PCIe and DP will be supported. Due to this, USB is configured
in high-speed and this does not require any SerDes lane configuration.
>>
>> Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
>> Signed-off-by: Matt Ranostay <mranostay@ti.com>
>> Signed-off-by: Ravi Gunasekaran <r-gunasekaran@ti.com>
[...]
>
> cheers,
> -roger
--
Regards,
Ravi
next prev parent reply other threads:[~2023-04-25 12:16 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-31 9:00 [PATCH v14 0/8] arm64: j721s2: Add support for additional IPs Ravi Gunasekaran
2023-03-31 9:00 ` [PATCH v14 1/8] arm64: dts: ti: k3-j721s2-main: Add support for USB Ravi Gunasekaran
2023-03-31 9:00 ` [PATCH v14 2/8] arm64: dts: ti: k3-j721s2-main: Add SERDES and WIZ device tree node Ravi Gunasekaran
2023-03-31 9:00 ` [PATCH v14 3/8] arm64: dts: ti: k3-j721s2-mcu-wakeup: Add support of OSPI Ravi Gunasekaran
2023-04-25 11:32 ` Roger Quadros
2023-04-27 14:21 ` [EXTERNAL] " Ravi Gunasekaran
2023-03-31 9:00 ` [PATCH v14 4/8] arm64: dts: ti: k3-j721s2-common-proc-board: Enable SERDES0 Ravi Gunasekaran
2023-04-25 11:45 ` Roger Quadros
2023-04-25 12:16 ` Ravi Gunasekaran [this message]
2023-03-31 9:00 ` [PATCH v14 5/8] arm64: dts: ti: k3-j721s2-common-proc-board: Add USB support Ravi Gunasekaran
2023-04-25 12:01 ` Roger Quadros
2023-04-25 12:36 ` Ravi Gunasekaran
2023-03-31 9:00 ` [PATCH v14 6/8] arm64: dts: ti: k3-j721s2: Add support for OSPI Flashes Ravi Gunasekaran
2023-03-31 9:00 ` [PATCH v14 7/8] arm64: dts: ti: k3-j721s2-main: Add PCIe device tree node Ravi Gunasekaran
2023-03-31 9:00 ` [PATCH v14 8/8] arm64: dts: ti: k3-j721s2-common-proc-board: Enable PCIe Ravi Gunasekaran
2023-04-25 13:19 ` [PATCH v14 0/8] arm64: j721s2: Add support for additional IPs Roger Quadros
2023-06-15 9:45 ` Vignesh Raghavendra
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