From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Tue, 10 Jan 2023 09:53:58 +0100 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1pFAON-007a3o-FP for lore@lore.pengutronix.de; Tue, 10 Jan 2023 09:53:58 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pFAOL-0000Pk-FE for lore@pengutronix.de; Tue, 10 Jan 2023 09:53:58 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=3AlfQN4WBSQ9t+cVTATjRq59S/24r26HChQkvVjyNvw=; b=SKmeLxOVg5rMv586cg2SRfqRZH h35G2QfwQ34tWg58ZfDnlBpnRb55aCS28d9k3SMjHMhNQMh5rcI3Vk8VKnX/mSz2gUFyjexVOSuk+ e0JNXQ3QFClUTmHIHkxQgAUtXF+SeGTO0VI/K6VknjN7ZaYJCcLORIquT+wQXX0MYaJP3k4Gy9eYX R3Dl+7mBAu2VhJd7hEQZ6joIX9hfG43iVEjuMkS7ziPdOCTGmHOVfQU72nhjNGxT0/Ym6waIwQaSu ep1vj0PJBsF26zG9QkizyFIaup24idvw5rbElCV5jSX4i7UVxKWSgA3drVq+GuhKGiU/AUcwzcrO/ 74igUx1Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pFANB-005vol-GU; Tue, 10 Jan 2023 08:52:45 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pFAN6-005vmr-P7 for barebox@lists.infradead.org; Tue, 10 Jan 2023 08:52:41 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pFAN5-0000Bl-D6; Tue, 10 Jan 2023 09:52:39 +0100 Received: from [2a0a:edc0:0:1101:1d::ac] (helo=dude04.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1pFAN4-0052Bd-PI; Tue, 10 Jan 2023 09:52:38 +0100 Received: from afa by dude04.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pFAN3-00ER80-Pa; Tue, 10 Jan 2023 09:52:37 +0100 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Ahmad Fatoum Date: Tue, 10 Jan 2023 09:52:37 +0100 Message-Id: <20230110085237.3440824-1-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230110_005240_828385_5F58ED89 X-CRM114-Status: GOOD ( 11.90 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.7 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH master] i2c: imx: increase timeout in i2c_fsl_poll_status from 1 to 5ms X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) The current wait time of 1 ms is apparently too short in some circumstances leading to following error when communicating with a KSZ switch with 100 kHz from an i.MX8MN I2C controller: ERROR: ksz9477-i2c ksz85630: error detecting KSZ9477: I/O error Increasing the poll time to 5ms resolved this issue: ksz9477-i2c ksz85630: Found KSZ9893 ksz9477-i2c ksz85630: chip id: 0x00989360 Signed-off-by: Ahmad Fatoum --- drivers/i2c/busses/i2c-imx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c index c0af446bcc25..28bd0072addf 100644 --- a/drivers/i2c/busses/i2c-imx.c +++ b/drivers/i2c/busses/i2c-imx.c @@ -201,7 +201,7 @@ static int i2c_fsl_trx_complete(struct i2c_adapter *adapter) static int i2c_fsl_acked(struct i2c_adapter *adapter) { - return i2c_fsl_poll_status(adapter, 1, 0, I2SR_RXAK); + return i2c_fsl_poll_status(adapter, 5, 0, I2SR_RXAK); } static int i2c_fsl_start(struct i2c_adapter *adapter) -- 2.30.2