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Wed, 05 Feb 2025 03:00:27 -0800 (PST) Sender: Domenico Andreoli Received: from cavok by m4.lan with local (Exim 4.96) (envelope-from ) id 1tfd8q-0000bq-17; Wed, 05 Feb 2025 12:00:24 +0100 Date: Wed, 5 Feb 2025 12:00:24 +0100 From: Domenico Andreoli To: Jason Montleon Cc: netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, "regressions@lists.linux.dev" , "hayashi.kunihiko@socionext.com" , "si.yanteng@linux.dev" , "pabeni@redhat.com" Subject: Re: [REGRESSION,6.14.0-rc1]: rk_gmac-dwmac: no ethernet device shows up (NanoPi M4) Message-ID: References: Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Wed, Feb 05, 2025 at 04:19:58AM +0000, Jason Montleon wrote: > On Monday, February 3rd, 2025 at 5:51 AM, Domenico Andreoli wrote: > > Hi, > > > > This morning I tried 6.14.0-rc1 on my NanoPi M4, the ethernet does not > > show up. > > I am experiencing similar behavior on the Lichee Pi 4A with thead-dwmac. It works fine on 6.12.12 and 6.13.1, but with 6.14-rc1 I don't see these last several lines of output as in your case. I did also see the same new error: > +stmmaceth ffe7070000.ethernet: Can't specify Rx FIFO size > > It looks like this message was introduced in the following commit and if I build with it reverted my ethernet interfaces work again. > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/net/ethernet/stmicro?h=v6.14-rc1&id=8865d22656b442b8d0fb019e6acb2292b99a9c3c Confirmed, reverting it resurrects the ethernet also for me. Thanks! dom > > Thanks, > Jason > > > This is the diff of the output of `dmesg | grep rk_gmac-dwmac` on 6.13.0 > > and 6.14.0-rc1: > > > > --- m4.ok.log 2025-02-03 11:37:03.991757775 +0100 > > +++ m4.nok.log 2025-02-03 11:37:17.249455484 +0100 > > @@ -15,4 +15,13 @@ > > rk_gmac-dwmac fe300000.ethernet: COE Type 2 > > rk_gmac-dwmac fe300000.ethernet: TX Checksum insertion supported > > rk_gmac-dwmac fe300000.ethernet: Wake-Up On Lan supported > > -rk_gmac-dwmac fe300000.ethernet: Normal descriptors > > -rk_gmac-dwmac fe300000.ethernet: Ring mode enabled > > -rk_gmac-dwmac fe300000.ethernet: Enable RX Mitigation via HW Watchdog Timer > > -rk_gmac-dwmac fe300000.ethernet end0: renamed from eth0 > > -rk_gmac-dwmac fe300000.ethernet end0: Register MEM_TYPE_PAGE_POOL RxQ-0 > > -rk_gmac-dwmac fe300000.ethernet end0: PHY [stmmac-0:01] driver [Generic PHY] (irq=POLL) > > -rk_gmac-dwmac fe300000.ethernet end0: No Safety Features support found > > -rk_gmac-dwmac fe300000.ethernet end0: PTP not supported by HW > > -rk_gmac-dwmac fe300000.ethernet end0: configuring for phy/rgmii link mode > > -rk_gmac-dwmac fe300000.ethernet end0: Link is Up - 1Gbps/Full - flow control rx/tx > > +rk_gmac-dwmac fe300000.ethernet: Can't specify Rx FIFO size > > > > The configration was updated with `make olddefconfig`, as usual. I > > could not find any new option that I might need to enable, if that is > > what went wrong. -- rsa4096: 3B10 0CA1 8674 ACBA B4FE FCD2 CE5B CF17 9960 DE13 ed25519: FFB4 0CC3 7F2E 091D F7DA 356E CC79 2832 ED38 CB05