From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.zeus03.de (zeus03.de [194.117.254.33]) (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 09AE7233D88 for ; Fri, 25 Apr 2025 09:14:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=194.117.254.33 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745572470; cv=none; b=D6KvXisXUxTLUMwPGhmz0xqltP/h0/7dgoEj7BOcqnig2STEkF50AqS7RYNEeGDQpXKP4U+g5ySPsF/lXrirQr4NSGH9hV/m8oA/GmLa2RwtKo+fcFC1taBi434g2Nc4TqSuXzfKV1RvngNJnYUuvOaAHg585L8OsK1j8LVXMWQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745572470; c=relaxed/simple; bh=7EgrSjYq/q+AEXrtHLG+GPhFy7CyRECDNOQR3ymqGno=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=exv+OVcjwcPkclQdG2vJuAo/iP8B9w9ubSz45ZCEgatqaYgEqisNL/yASKxveg9sDf47jsJsoOzq44oqjEA4BJp8stTTATIRNFZmhPYeMQJDI2Fbyg5g01We9ZVasNnRkO2Un6hjkugBTPR9OmpNLPp9YYhlcQWeDsQ3vHIfUdE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com; spf=pass smtp.mailfrom=sang-engineering.com; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b=SK/c6+b6; arc=none smtp.client-ip=194.117.254.33 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sang-engineering.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b="SK/c6+b6" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= sang-engineering.com; h=date:from:to:cc:subject:message-id :references:mime-version:content-type:in-reply-to; s=k1; bh=LjSE ovQMAg8Bps9xT8LjGwQNRn9cWiTYIsHJmA9mGoU=; b=SK/c6+b6qV6JZoekod7b Pwe+6nFydr4XfPcE36tXXcJmWS3a8G9W8fb6nnSSRxl3SZuDFJf162XdrDyBYQ4S gDPsbg1I+6SnWxcGBFxMwsWf1HyRlmkA4yFlpiVJ94mc7E5ZdSgBZkAFCfV7/T9p enOF2s9guMTzHB4HhcXwfs7ceALhIZuylR7uH4h02v83ACTRiNTcVitjzxTQuvj1 nEK171CGo04ECIBsKJPJha3S/pRodjcIlR/YP4Qfn+5jG/jn5aU8NrV4B/dS0uu6 PgoorTb1tHwALstZy8mqh64ciP7X5eOudBIlJ4ui0NjC2Pyroma5QQgOxZe1HmyE oQ== Received: (qmail 3763468 invoked from network); 25 Apr 2025 11:14:19 +0200 Received: by mail.zeus03.de with UTF8SMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 25 Apr 2025 11:14:19 +0200 X-UD-Smtp-Session: l3s3148p1@HolgwpYz1KQgAwDPXx6JAAunYj8Nf7DC Date: Fri, 25 Apr 2025 11:14:19 +0200 From: Wolfram Sang To: "Lad, Prabhakar" Cc: Chris Brandt , Andi Shyti , Geert Uytterhoeven , linux-renesas-soc@vger.kernel.org, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, Biju Das , Fabrizio Castro , Lad Prabhakar , Claudiu Beznea , Andy Shevchenko Subject: Re: [PATCH v8] i2c: riic: Implement bus recovery Message-ID: Mail-Followup-To: Wolfram Sang , "Lad, Prabhakar" , Chris Brandt , Andi Shyti , Geert Uytterhoeven , linux-renesas-soc@vger.kernel.org, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, Biju Das , Fabrizio Castro , Lad Prabhakar , Claudiu Beznea , Andy Shevchenko References: <20250407121859.131156-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="/0jAnBZn5C350odU" Content-Disposition: inline In-Reply-To: --/0jAnBZn5C350odU Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Hi Prabhakar, > I prepared a setup on SMARC2 RZ/G3S and I can confirm it is working This is good news! > (but this is failing on SMARC RZ/G2L I'll look further into this) This not so much. Hmmm, are you verifying against the same I2C device on the carrier board? If you compare against different I2C devices on the module board, the culprit might be the I2C device. > For the SMARC2 RZ/G3S to make sure the I2C GPIO pins behave as > opendrain I have the below patch for pinctrl Do you really need this patch? The GPIO lines are wired to SCL/SDA which are already pulled up. Search for R118 in the module schematics. 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