From patchwork Tue Apr 6 07:21:20 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Erwan LE RAY X-Patchwork-Id: 417146 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=-13.8 required=3.0 tests=BAYES_00,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=ham 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 264F2C433B4 for ; Tue, 6 Apr 2021 07:21:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C4F736101D for ; Tue, 6 Apr 2021 07:21:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244268AbhDFHWC (ORCPT ); Tue, 6 Apr 2021 03:22:02 -0400 Received: from mx07-00178001.pphosted.com ([185.132.182.106]:3186 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233289AbhDFHV7 (ORCPT ); Tue, 6 Apr 2021 03:21:59 -0400 Received: from pps.filterd (m0046668.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 1367H7Fc007447; Tue, 6 Apr 2021 09:21:28 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=selector1; bh=98McyI4svfF5KndUNWGyXXAvHiKV60OEgW91gDPLjCE=; b=RN6N+EPtFLJuKAQRtc/wR7QIUYLt8hkTSY8blMcCRjPnfkuwYnOuHuELDcpqOH1fRFWe 0Qg+5vRO7LBP0pfqGn8I4G/k5xHZDDC6SVoyAQhjIE/rC6KVchnDW3TKShMNHzMTAxoH LZ/ELilmRj92sdi9sehyQWxgRKYFsMbEVFMHm2Kd4Ktd1KkHWh/9PdcRuVRUuWZCehiN B6JMWwK6MFDLbB84EkXKXdkKIy7Z+EYSyz5wdEBWrIdWPjmXbgdRutmX18GlGnetulLN 1wswdiY+Cczjam9dk2DZYtyW8upvrCUys8viCiqa3z/S3d6VB2ABqguGBz7zXQmVj1T2 GA== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 37r6u731ws-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 06 Apr 2021 09:21:28 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 845B810002A; Tue, 6 Apr 2021 09:21:26 +0200 (CEST) Received: from Webmail-eu.st.com (sfhdag2node3.st.com [10.75.127.6]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 707C121E66A; Tue, 6 Apr 2021 09:21:26 +0200 (CEST) Received: from localhost (10.75.127.48) by SFHDAG2NODE3.st.com (10.75.127.6) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 6 Apr 2021 09:21:26 +0200 From: Erwan Le Ray To: Greg Kroah-Hartman , Jiri Slaby , Rob Herring , Maxime Coquelin , Alexandre Torgue CC: , , , , , Erwan Le Ray , Fabrice Gasnier , Valentin Caron Subject: [PATCH 0/2] stm32 usart add fifo threshold configuration Date: Tue, 6 Apr 2021 09:21:20 +0200 Message-ID: <20210406072122.27384-1-erwan.leray@foss.st.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.75.127.48] X-ClientProxiedBy: SFHDAG1NODE2.st.com (10.75.127.2) To SFHDAG2NODE3.st.com (10.75.127.6) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369, 18.0.761 definitions=2021-04-06_01:2021-04-01,2021-04-06 signatures=0 Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org This series adds the support for two optional DT properties, to configure RX and TX FIFO thresholds: - st,rx-fifo-threshold-bytes - st,tx-fifo-threshold-bytes This replaces hard-coded 8 bytes threshold. No functional change expected if unspecified (keep 8 as default). Erwan Le Ray (1): dt-bindings: serial: stm32: add fifo threshold configuration Fabrice Gasnier (1): serial: stm32: add fifo threshold configuration .../bindings/serial/st,stm32-uart.yaml | 31 ++++++++++- drivers/tty/serial/stm32-usart.c | 53 ++++++++++++++++--- drivers/tty/serial/stm32-usart.h | 8 +-- 3 files changed, 79 insertions(+), 13 deletions(-)