From: Sergey Shtylyov <s.shtylyov@omp.ru>
To: Phil Edworthy <phil.edworthy@renesas.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Sergei Shtylyov <sergei.shtylyov@gmail.com>,
<netdev@vger.kernel.org>, <linux-renesas-soc@vger.kernel.org>,
<devicetree@vger.kernel.org>,
Biju Das <biju.das.jz@bp.renesas.com>
Subject: Re: [PATCH 2/9] dt-bindings: net: renesas,etheravb: Document RZ/V2M SoC
Date: Sat, 7 May 2022 21:21:02 +0300 [thread overview]
Message-ID: <d0c1800f-8826-207f-35a8-90d3a62a32fe@omp.ru> (raw)
In-Reply-To: <20220504145454.71287-3-phil.edworthy@renesas.com>
Hello!
On 5/4/22 5:54 PM, Phil Edworthy wrote:
> Document the Ethernet AVB IP found on RZ/V2M SoC.
> It includes the Ethernet controller (E-MAC) and Dedicated Direct memory
> access controller (DMAC) for transferring transmitted Ethernet frames
> to and received Ethernet frames from respective storage areas in the
> URAM at high speed.
I think nobody knows what exactly URAM stands for... you better call it
just RAM. :-)
> The AVB-DMAC is compliant with IEEE 802.1BA, IEEE 802.1AS timing and
> synchronization protocol, IEEE 802.1Qav real-time transfer, and the
> IEEE 802.1Qat stream reservation protocol.
>
> R-Car has a pair of combined interrupt lines:
> ch22 = Line0_DiA | Line1_A | Line2_A
> ch23 = Line0_DiB | Line1_B | Line2_B
> Line0 for descriptor interrupts.
> Line1 for error related interrupts (which we call err_a and err_b).
> Line2 for management and gPTP related interrupts (mgmt_a and mgmt_b).
>
> RZ/V2M hardware has separate interrupt lines for each of these, but
> we keep the "ch22" name for Line0_DiA.
Not sure I agree here...
BTW, aren't the interrupts called "Ethernet ABV.ch<n>" (as on R-Car gen3)
in your (complete?) manual?
> We also keep the "ch24" name for the Line3 (MAC) interrupt.
>
> It has 3 clocks; the main AXI clock, the AMBA CHI clock and a gPTP
Could you spell out CHI like below?
> reference clock.
>
> Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
[...]
MBR, Sergey
next prev parent reply other threads:[~2022-05-07 18:21 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-04 14:54 [PATCH 0/9] Add Renesas RZ/V2M Ethernet support Phil Edworthy
2022-05-04 14:54 ` [PATCH 2/9] dt-bindings: net: renesas,etheravb: Document RZ/V2M SoC Phil Edworthy
2022-05-07 18:21 ` Sergey Shtylyov [this message]
2022-05-09 8:15 ` Phil Edworthy
2022-05-04 14:54 ` [PATCH 3/9] ravb: Separate use of GIC reg for PTME from multi_irqs Phil Edworthy
2022-05-04 20:40 ` Sergey Shtylyov
2022-05-05 8:26 ` Phil Edworthy
2022-05-04 14:54 ` [PATCH 4/9] ravb: Separate handling of irq enable/disable regs into feature Phil Edworthy
2022-05-04 19:54 ` Sergey Shtylyov
2022-05-05 8:12 ` Phil Edworthy
2022-05-04 14:54 ` [PATCH 5/9] ravb: Support separate Line0 (Desc), Line1 (Err) and Line2 (Mgmt) irqs Phil Edworthy
2022-05-05 19:40 ` Sergey Shtylyov
2022-05-09 8:00 ` Phil Edworthy
2022-05-04 14:54 ` [PATCH 6/9] ravb: Use separate clock for gPTP Phil Edworthy
2022-05-05 18:13 ` Sergey Shtylyov
2022-05-04 14:54 ` [PATCH 7/9] ravb: Add support for RZ/V2M Phil Edworthy
2022-05-05 20:18 ` Sergey Shtylyov
2022-05-09 7:01 ` Phil Edworthy
2022-05-05 0:57 ` [PATCH 0/9] Add Renesas RZ/V2M Ethernet support Jakub Kicinski
2022-05-05 6:59 ` Geert Uytterhoeven
2022-05-05 9:14 ` Phil Edworthy
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