From mboxrd@z Thu Jan 1 00:00:00 1970 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=-14.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 AA65EC433E0 for ; Tue, 12 Jan 2021 19:03:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 76FFA23122 for ; Tue, 12 Jan 2021 19:03:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406504AbhALTDW (ORCPT ); Tue, 12 Jan 2021 14:03:22 -0500 Received: from hqnvemgate26.nvidia.com ([216.228.121.65]:17662 "EHLO hqnvemgate26.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726664AbhALTDV (ORCPT ); Tue, 12 Jan 2021 14:03:21 -0500 Received: from hqmail.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate26.nvidia.com (using TLS: TLSv1.2, AES256-SHA) id ; Tue, 12 Jan 2021 11:02:41 -0800 Received: from HQMAIL107.nvidia.com (172.20.187.13) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Tue, 12 Jan 2021 19:02:40 +0000 Received: from skomatineni-linux.nvidia.com (172.20.145.6) by mail.nvidia.com (172.20.187.13) with Microsoft SMTP Server id 15.0.1473.3 via Frontend Transport; Tue, 12 Jan 2021 19:02:40 +0000 From: Sowjanya Komatineni To: , , , , CC: , , Subject: [PATCH v3] Create i2c_writesl_vi() to use with VI I2C Date: Tue, 12 Jan 2021 11:02:40 -0800 Message-ID: <1610478161-4877-1-git-send-email-skomatineni@nvidia.com> X-Mailer: git-send-email 2.7.4 X-NVConfidentiality: public MIME-Version: 1.0 Content-Type: text/plain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1610478161; bh=xwwBp4yfrgJzIJ1O4SXmSt1ktHP8GdLhQ92ARq5y3wA=; h=From:To:CC:Subject:Date:Message-ID:X-Mailer:X-NVConfidentiality: MIME-Version:Content-Type; b=f3SpTnVZ+LbHkhz1bWB5OTJPZBGhmiIIBYquI12O72pj0oNGU3T0xYIraVkARzVQG kJNbJGCdfHjPDzeVZ0NAJbRyHDQpGeoZFVprmCmG2SLWK7jUtyiXWpaZO6WIZaq2a6 rNZ07dggOioDw/AkvzRkPKhgZJHKT2a4rYnpmaJXZEAOOxf8hrPPmEhps9XK0Rt0oi wnc4OgLm/T58xtKuA4ylnL3UgUxD50ksRkCiY3hlsnFZ/NLNvGlrsu2scRTqL8W7cc jQnOOEAUEA5oZV96F4aW4/yIFmloleJnZB6YBP4YGj9rhYROkgRp3BJ1+xMLAU6HnZ E7Z8IHJpqXzYA== Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Patch in this series is to fix known hardware bug with VI I2C controller where immediate multiple writes to TX_FIFO gets stuck resulting in VI I2C controller to be in bad state. Delta between patch versions: [v3]: Includes v2 feedback - uses relaxed writel and readl - avoids type casting on data buffer during i2c_writesl_vi() - updated comment to clearly mention this as workaround to known hardware bug with VI I2C. [v2]: Creates i2c_writesl_vi() for vi i2c based on v1 feedback. [v1]: Updates i2c_writesl() to use writel() followed by i2c_readl(). Sowjanya Komatineni (1): i2c: tegra: Create i2c_writesl_vi() to use with VI I2C for filling TX FIFO drivers/i2c/busses/i2c-tegra.c | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) -- 2.7.4