From patchwork Tue Feb 16 17:41:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 12090451 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5EDACC433DB for ; Tue, 16 Feb 2021 17:43:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 31CB864DAF for ; Tue, 16 Feb 2021 17:43:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231169AbhBPRnY (ORCPT ); Tue, 16 Feb 2021 12:43:24 -0500 Received: from relay12.mail.gandi.net ([217.70.178.232]:45283 "EHLO relay12.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231272AbhBPRnA (ORCPT ); Tue, 16 Feb 2021 12:43:00 -0500 Received: from uno.lan (93-34-118-233.ip49.fastwebnet.it [93.34.118.233]) (Authenticated sender: jacopo@jmondi.org) by relay12.mail.gandi.net (Postfix) with ESMTPSA id 6CBCC20001B; Tue, 16 Feb 2021 17:41:55 +0000 (UTC) From: Jacopo Mondi To: kieran.bingham+renesas@ideasonboard.com, laurent.pinchart+renesas@ideasonboard.com, niklas.soderlund+renesas@ragnatech.se, geert@linux-m68k.org Cc: Jacopo Mondi , Mauro Carvalho Chehab , linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 16/16] media: i2c: gmsl: Use 339Kbps I2C bit-rate Date: Tue, 16 Feb 2021 18:41:46 +0100 Message-Id: <20210216174146.106639-17-jacopo+renesas@jmondi.org> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210216174146.106639-1-jacopo+renesas@jmondi.org> References: <20210216174146.106639-1-jacopo+renesas@jmondi.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org With the camera modules initialization routines now running with the noise immunity threshold enabled, it is possible to restore the bit rate of the I2C transactions transported on the GMSL control channel to 339 Kbps. The 339 Kbps bit rate represents the default setting for the serializer and the deserializer chips, and the setup/hold time and slave timeout time in use are calibrate to support that rate. Signed-off-by: Jacopo Mondi --- drivers/media/i2c/max9286.c | 2 +- drivers/media/i2c/rdacm20.c | 2 +- drivers/media/i2c/rdacm21.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/media/i2c/max9286.c b/drivers/media/i2c/max9286.c index aa01d5bb79ef..0b620f2f8c41 100644 --- a/drivers/media/i2c/max9286.c +++ b/drivers/media/i2c/max9286.c @@ -330,7 +330,7 @@ static int max9286_i2c_mux_init(struct max9286_priv *priv) static void max9286_configure_i2c(struct max9286_priv *priv, bool localack) { u8 config = MAX9286_I2CSLVSH_469NS_234NS | MAX9286_I2CSLVTO_1024US | - MAX9286_I2CMSTBT_105KBPS; + MAX9286_I2CMSTBT_339KBPS; if (localack) config |= MAX9286_I2CLOCACK; diff --git a/drivers/media/i2c/rdacm20.c b/drivers/media/i2c/rdacm20.c index 0632ef98eea7..d45e8b0e52a0 100644 --- a/drivers/media/i2c/rdacm20.c +++ b/drivers/media/i2c/rdacm20.c @@ -450,7 +450,7 @@ static int rdacm20_init(struct v4l2_subdev *sd, unsigned int val) ret = max9271_configure_i2c(&dev->serializer, MAX9271_I2CSLVSH_469NS_234NS | MAX9271_I2CSLVTO_1024US | - MAX9271_I2CMSTBT_105KBPS); + MAX9271_I2CMSTBT_339KBPS); if (ret) return ret; diff --git a/drivers/media/i2c/rdacm21.c b/drivers/media/i2c/rdacm21.c index 80b6f16f87a8..552985026458 100644 --- a/drivers/media/i2c/rdacm21.c +++ b/drivers/media/i2c/rdacm21.c @@ -442,7 +442,7 @@ static int rdacm21_init(struct v4l2_subdev *sd, unsigned int val) ret = max9271_configure_i2c(&dev->serializer, MAX9271_I2CSLVSH_469NS_234NS | MAX9271_I2CSLVTO_1024US | - MAX9271_I2CMSTBT_105KBPS); + MAX9271_I2CMSTBT_339KBPS); if (ret) return ret;