From: Simon Horman <horms@kernel.org>
To: Charles Perry <charles.perry@microchip.com>
Cc: netdev@vger.kernel.org, Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Nicolas Ferre <nicolas.ferre@microchip.com>,
Claudiu Beznea <claudiu.beznea@tuxon.dev>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next 4/4] net: macb: add support for Microchip p64h ethernet endpoint
Date: Fri, 6 Mar 2026 13:04:54 +0000 [thread overview]
Message-ID: <20260306130454.GB461701@kernel.org> (raw)
In-Reply-To: <20260303180318.1814791-5-charles.perry@microchip.com>
On Tue, Mar 03, 2026 at 10:03:18AM -0800, Charles Perry wrote:
> p64h doesn't have the USRIO register so MACB_CAPS_USRIO_DISABLED is
> used.
>
> p64h does support PTP and has the timestamping unit so
> MACB_CAPS_GEM_HAS_PTP is used.
>
> jumbo_max_len is set to 16383 (0x3FFF) as reported by the DCFG2 register
> bits 0..13. The JML register also has a default value of 0x3FFF.
>
> dma_burst_length is set to 16 because that's what most other platforms
> use and it worked for me so far. There is one other mode where bursts of
> up to 256 are allowed but this might impact negatively other masters on
> the NOC. The register default value is 4 (bursts up to 4).
>
> Signed-off-by: Charles Perry <charles.perry@microchip.com>
Reviewed-by: Simon Horman <horms@kernel.org>
prev parent reply other threads:[~2026-03-06 13:05 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-03 18:03 [PATCH net-next 0/4] Initial support for p64h GEM Charles Perry
2026-03-03 18:03 ` [PATCH net-next 1/4] dt-bindings: net: cdns,macb: add a compatible for Microchip p64h Charles Perry
2026-03-03 18:18 ` Conor Dooley
2026-03-03 18:54 ` Charles Perry
2026-03-03 19:32 ` Conor Dooley
2026-03-03 20:45 ` Charles Perry
2026-03-03 18:03 ` [PATCH net-next 2/4] dt-bindings: net: cdns,macb: forbid phy nodes " Charles Perry
2026-03-03 18:11 ` Conor Dooley
2026-03-03 18:57 ` Charles Perry
2026-03-03 18:03 ` [PATCH net-next 3/4] net: macb: add safeguards for jumbo frame larger than 10240 Charles Perry
2026-03-05 11:40 ` Simon Horman
2026-03-05 14:24 ` Charles Perry
2026-03-06 13:04 ` Simon Horman
2026-03-06 15:25 ` Charles Perry
2026-03-03 18:03 ` [PATCH net-next 4/4] net: macb: add support for Microchip p64h ethernet endpoint Charles Perry
2026-03-06 13:04 ` Simon Horman [this message]
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