From: Russell King - ARM Linux admin <linux@armlinux.org.uk>
To: Stefan Chulski <stefanc@marvell.com>
Cc: Antoine Tenart <antoine.tenart@bootlin.com>,
"davem@davemloft.net" <davem@davemloft.net>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"thomas.petazzoni@bootlin.com" <thomas.petazzoni@bootlin.com>,
"maxime.chevallier@bootlin.com" <maxime.chevallier@bootlin.com>,
"gregory.clement@bootlin.com" <gregory.clement@bootlin.com>,
"miquel.raynal@bootlin.com" <miquel.raynal@bootlin.com>,
Nadav Haklai <nadavh@marvell.com>,
Yan Markman <ymarkman@marvell.com>,
"mw@semihalf.com" <mw@semihalf.com>
Subject: Re: [EXT] Re: [PATCH net-next 10/13] net: mvpp2: reset the XPCS while reconfiguring the serdes lanes
Date: Mon, 18 Feb 2019 11:28:15 +0000 [thread overview]
Message-ID: <20190218112815.ec3pyuvzpphdance@shell.armlinux.org.uk> (raw)
In-Reply-To: <DM5PR18MB1067E1DD47E7094E02043A58B0630@DM5PR18MB1067.namprd18.prod.outlook.com>
Hi Stefan,
On Mon, Feb 18, 2019 at 11:08:34AM +0000, Stefan Chulski wrote:
> HW recommendation upon Serdes reconfiguration are the following:
>
> 1. Disable port(CTRL0_REG - in XLG/GMAC)
> 2. Put port in reset (both XLG/GMAC)
> 3. For KR - put in reset MPCS (MAC control clock, RX SD clock, TX SD clock), XPSC is RXAUI/XAUI clock domain
> 4. Power down Serdes lane
>
> Do reconfiguration of Serdes.
>
> 5. Enable Serdes lane
> 6. Disable MPCS reset for KR
> 7. Disable port reset (both XLG/GMAC)
> 8. Enable port (both XLG/GMAC)
For clarity, presumably either the XLG or the GMAC should be released
from reset and enabled at any one time depending on the configured mode,
but never both together?
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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next prev parent reply other threads:[~2019-02-18 11:28 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-15 15:32 [PATCH net-next 00/13] net: mvpp2: various fixes Antoine Tenart
2019-02-15 15:32 ` [PATCH net-next 01/13] net: mvpp2: do not call phylink_mac_change if there is no event Antoine Tenart
2019-02-15 17:05 ` Russell King - ARM Linux admin
2019-02-18 10:40 ` Antoine Tenart
2019-02-15 15:32 ` [PATCH net-next 02/13] net: mvpp2: a port can be disabled even if we use the link IRQ Antoine Tenart
2019-02-15 15:32 ` [PATCH net-next 03/13] net: mvpp2: do not disable the port if the mode hasn't changed Antoine Tenart
2019-02-15 15:32 ` [PATCH net-next 04/13] net: mvpp2: reconfiguring the port interface is PPv2.2 specific Antoine Tenart
2019-02-15 15:32 ` [PATCH net-next 05/13] net: mvpp2: do not set the XLG MAC in reset when disabling a port Antoine Tenart
2019-02-15 15:32 ` [PATCH net-next 06/13] net: mvpp2: fix a typo in the header Antoine Tenart
2019-02-15 15:32 ` [PATCH net-next 07/13] net: mvpp2: fix validate for PPv2.1 Antoine Tenart
2019-02-15 15:32 ` [PATCH net-next 08/13] net: mvpp2: fix the computation of the RXQs Antoine Tenart
2019-02-15 15:32 ` [PATCH net-next 09/13] net: mvpp2: update the port documentation regarding the GoP Antoine Tenart
2019-02-15 15:32 ` [PATCH net-next 10/13] net: mvpp2: reset the XPCS while reconfiguring the serdes lanes Antoine Tenart
2019-02-15 17:12 ` Russell King - ARM Linux admin
2019-02-15 17:23 ` Stefan Chulski
2019-02-18 10:26 ` Antoine Tenart
2019-02-18 10:43 ` Russell King - ARM Linux admin
2019-02-18 10:47 ` Russell King - ARM Linux admin
2019-02-18 10:52 ` Antoine Tenart
2019-02-18 11:08 ` [EXT] " Stefan Chulski
2019-02-18 11:28 ` Russell King - ARM Linux admin [this message]
2019-02-18 11:33 ` Stefan Chulski
2019-02-18 10:50 ` Antoine Tenart
2019-02-15 15:32 ` [PATCH net-next 11/13] net: mvpp2: reset the XLG MAC in port_reset Antoine Tenart
2019-02-15 15:32 ` [PATCH net-next 12/13] net: mvpp2: fix alignment of MVPP2_GMAC_CONFIG_MII_SPEED definition Antoine Tenart
2019-02-15 15:32 ` [PATCH net-next 13/13] net: mvpp2: some AN fields require the link to be down when updated Antoine Tenart
2019-02-17 21:23 ` [PATCH net-next 00/13] net: mvpp2: various fixes David Miller
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