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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Richard Cochran , Michal Simek , Andrew Lunn , Vladimir Oltean , Simon Horman , Russell King , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, git-dev@amd.com Subject: Re: [PATCH 03/20] net: xilinx: tsn: add endpoint MAC driver skeleton Message-ID: References: <20260807104431.157230-1-nagadheeraj.rottela@amd.com> <20260807104431.157230-4-nagadheeraj.rottela@amd.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="s3a2p35cknyjhbm7" Content-Disposition: inline In-Reply-To: <20260807104431.157230-4-nagadheeraj.rottela@amd.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260807_140011_408243_254ECEE1 X-CRM114-Status: GOOD ( 22.81 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org --s3a2p35cknyjhbm7 Content-Type: text/plain; protected-headers=v1; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Subject: Re: [PATCH 03/20] net: xilinx: tsn: add endpoint MAC driver skeleton MIME-Version: 1.0 On Fri, Aug 07, 2026 at 04:14:14PM +0530, Nagadheeraj Rottela wrote: > From: Srinivas Neeli >=20 > The TSN Endpoint MAC owns the IP's host-side MCDMA data path and is the > netdev physically wired to the CPU. The DSA switch needs this netdev to > exist as its conduit. >=20 > Add a platform driver (compatible "xlnx,tsn-ep-mac") for the endpoint. > Register the netdev named "ep", set its MAC address, and provide minimal > netdev and ethtool ops. This skeleton handles device bring-up only, with > no data path yet. So ndo_open just starts the queues and ndo_start_xmit > drops frames. >=20 > Signed-off-by: Srinivas Neeli > Co-developed-by: Nagadheeraj Rottela > Signed-off-by: Nagadheeraj Rottela > --- > drivers/net/ethernet/xilinx/tsn/Makefile | 2 +- > drivers/net/ethernet/xilinx/tsn/xilinx_tsn.h | 15 ++ > .../net/ethernet/xilinx/tsn/xilinx_tsn_ep.c | 152 ++++++++++++++++++ > .../net/ethernet/xilinx/tsn/xilinx_tsn_main.c | 3 + > 4 files changed, 171 insertions(+), 1 deletion(-) > create mode 100644 drivers/net/ethernet/xilinx/tsn/xilinx_tsn.h > create mode 100644 drivers/net/ethernet/xilinx/tsn/xilinx_tsn_ep.c >=20 > diff --git a/drivers/net/ethernet/xilinx/tsn/Makefile b/drivers/net/ether= net/xilinx/tsn/Makefile > index 6f99226f3dc8..5886828b386f 100644 > --- a/drivers/net/ethernet/xilinx/tsn/Makefile > +++ b/drivers/net/ethernet/xilinx/tsn/Makefile > @@ -1,2 +1,2 @@ > obj-$(CONFIG_XILINX_TSN) +=3D xilinx_tsn.o > -xilinx_tsn-y :=3D xilinx_tsn_main.o > +xilinx_tsn-y :=3D xilinx_tsn_main.o xilinx_tsn_ep.o > diff --git a/drivers/net/ethernet/xilinx/tsn/xilinx_tsn.h b/drivers/net/e= thernet/xilinx/tsn/xilinx_tsn.h > new file mode 100644 > index 000000000000..b0757e22d1fd > --- /dev/null > +++ b/drivers/net/ethernet/xilinx/tsn/xilinx_tsn.h > @@ -0,0 +1,15 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +/* > + * AMD/Xilinx TSN Endpoint Ethernet MAC driver, shared definitions. > + * > + * Copyright (C) 2026 Advanced Micro Devices, Inc. > + */ > + > +#ifndef _XILINX_TSN_H > +#define _XILINX_TSN_H > + > +#include > + > +extern struct platform_driver xlnx_tsn_ep_driver; > + > +#endif /* _XILINX_TSN_H */ > diff --git a/drivers/net/ethernet/xilinx/tsn/xilinx_tsn_ep.c b/drivers/ne= t/ethernet/xilinx/tsn/xilinx_tsn_ep.c > new file mode 100644 > index 000000000000..9b556edf5423 > --- /dev/null > +++ b/drivers/net/ethernet/xilinx/tsn/xilinx_tsn_ep.c > @@ -0,0 +1,152 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * AMD/Xilinx TSN Endpoint MAC driver. > + * > + * Copyright (C) 2026 Advanced Micro Devices, Inc. > + */ > + > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include As for patch #2: Please drop . 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