From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 37FF314285 for ; Mon, 30 Oct 2023 11:55:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=resnulli-us.20230601.gappssmtp.com header.i=@resnulli-us.20230601.gappssmtp.com header.b="HvoOMHM3" Received: from mail-ej1-x630.google.com (mail-ej1-x630.google.com [IPv6:2a00:1450:4864:20::630]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EF322C5 for ; Mon, 30 Oct 2023 04:55:26 -0700 (PDT) Received: by mail-ej1-x630.google.com with SMTP id a640c23a62f3a-9adca291f99so652102866b.2 for ; Mon, 30 Oct 2023 04:55:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=resnulli-us.20230601.gappssmtp.com; s=20230601; t=1698666925; x=1699271725; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=Q31c8fnQHD+W10kmomcQ4zTSAMbkT+bVtaWYEa58nas=; b=HvoOMHM3zushLZ9gCVFUIC4w7Sq7a2oQf/zsEOrIJiV2h3ds3QAP5QGzzx8OOL+dRS sNxzjq1xK1IqleJ0U2RWCPf1GazQcoR38f0IkZvEMevVJHyA7lrZPMVym0p9b1vK5l9A Sdi9DCSdHxh/voEzqQ6C7id53wKrCXOXGRDHUpg2aU0N6bKaAcRwrMIhnpm7UWUEkIaa z4I+5xiv+JwyPIxKPDtqeE35zVMyQDdmJggjNCCaDZQ5DYE5iHHoPbo541xDR+Fi9MqX 3QMk8i8gwj7wkGUw5BLpoqX2LZ/cvl+bYuwWfikj2XGbtHwzwZga4wuZxrgtOxfDHqZY yqGg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1698666925; x=1699271725; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=Q31c8fnQHD+W10kmomcQ4zTSAMbkT+bVtaWYEa58nas=; b=dd42U90sD2FzWX6uPpuG08nUTtp+/TLM4iMp+sXgI28s9z3CJz+9smj9d8+VKGOjOE kMoFI6GtZQRuaxeZASjPbieputUvobUV1vZ0J7EEITrHcZpOegpfU3vuJhHS4rYBhQ04 MDDt1UTP4DiM3diHuqPmseWuS3zPsLSacFEG05XFqLBTEEeKI94O6kBaoUyjgKNbyC4E O9NDBpldIIVE+oSY8FjjnEzD21h5T9uV3naBbCxMz4oo0PS2/SU6F2Xo6XbGbFgYe+hn 3mQvWqcoylRN7NdTevPyS36enfhWQLU4pTUjgoNSBPLrgA0BQWqpalttchJEZ9c181XG rZow== X-Gm-Message-State: AOJu0YwRjkb0b9vq9F/VByMONeCH8dR4PCXweJi0bBbRsERfm9nzuRK6 6Beu+sR5wfrdKFRl1heumTf33g== X-Google-Smtp-Source: AGHT+IEK0FVzrhD+/lsg/GFhSKbE3HoxQjpfS+HOYJ/lF5CE71Yh2/i3l6Z4QGe2FLuRhkkWz0rUHA== X-Received: by 2002:a17:906:c14b:b0:9be:ab38:a362 with SMTP id dp11-20020a170906c14b00b009beab38a362mr8139316ejc.46.1698666925439; Mon, 30 Oct 2023 04:55:25 -0700 (PDT) Received: from localhost (host-213-179-129-39.customer.m-online.net. [213.179.129.39]) by smtp.gmail.com with ESMTPSA id lf19-20020a170906ae5300b009ad89697c86sm5944350ejb.144.2023.10.30.04.55.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 30 Oct 2023 04:55:24 -0700 (PDT) Date: Mon, 30 Oct 2023 12:55:23 +0100 From: Jiri Pirko To: Bernd Edlinger Cc: Alexandre Torgue , Jose Abreu , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Maxime Coquelin , netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, "linux-kernel@vger.kernel.org" Subject: Re: [PATCH] net: stmmac: Wait a bit for the reset to take effect 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: Mon, Oct 30, 2023 at 07:01:11AM CET, bernd.edlinger@hotmail.de wrote: >otherwise the synopsys_id value may be read out wrong, >because the GMAC_VERSION register might still be in reset >state, for at least 1 us after the reset is de-asserted. > >Add a wait for 10 us before continuing to be on the safe side. > >Signed-off-by: Bernd Edlinger Reviewed-by: Jiri Pirko