From patchwork Mon Mar 20 13:12:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Biju Das X-Patchwork-Id: 665784 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CC0DCC7618A for ; Mon, 20 Mar 2023 13:12:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231703AbjCTNM6 (ORCPT ); Mon, 20 Mar 2023 09:12:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36406 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231657AbjCTNMw (ORCPT ); Mon, 20 Mar 2023 09:12:52 -0400 Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id D24BE21946; Mon, 20 Mar 2023 06:12:48 -0700 (PDT) X-IronPort-AV: E=Sophos;i="5.98,274,1673881200"; d="scan'208";a="156571533" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 20 Mar 2023 22:12:48 +0900 Received: from localhost.localdomain (unknown [10.226.92.205]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 52C13420F87D; Mon, 20 Mar 2023 22:12:45 +0900 (JST) From: Biju Das To: Greg Kroah-Hartman Cc: Biju Das , Jiri Slaby , linux-serial@vger.kernel.org, Geert Uytterhoeven , =?utf-8?q?Niklas_S=C3=B6derlund?= , Prabhakar Mahadev Lad , linux-renesas-soc@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH] serial: 8250_em: Fix UART port type Date: Mon, 20 Mar 2023 13:12:42 +0000 Message-Id: <20230320131242.529839-1-biju.das.jz@bp.renesas.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org commit 32e293be736b853f168cd065d9cbc1b0c69f545d upstream. As per HW manual for EMEV2 "R19UH0040EJ0400 Rev.4.00", the UART IP found on EMMA mobile SoC is Register-compatible with the general-purpose 16750 UART chip. Fix UART port type as 16750 and enable 64-bytes fifo support. Fixes: 22886ee96895 ("serial8250-em: Emma Mobile UART driver V2") Cc: stable@vger.kernel.org # 4.14.y Signed-off-by: Biju Das Link: https://lore.kernel.org/r/20230227114152.22265-2-biju.das.jz@bp.renesas.com Signed-off-by: Greg Kroah-Hartman [biju: manually fixed the conflicts] Signed-off-by: Biju Das --- Resending to 4.14 with confilcts [1] fixed. [1] https://lore.kernel.org/stable/167930354015894@kroah.com/ --- drivers/tty/serial/8250/8250_em.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/tty/serial/8250/8250_em.c b/drivers/tty/serial/8250/8250_em.c index 0b6381214917..e0abc1fd6730 100644 --- a/drivers/tty/serial/8250/8250_em.c +++ b/drivers/tty/serial/8250/8250_em.c @@ -113,8 +113,8 @@ static int serial8250_em_probe(struct platform_device *pdev) memset(&up, 0, sizeof(up)); up.port.mapbase = regs->start; up.port.irq = irq->start; - up.port.type = PORT_UNKNOWN; - up.port.flags = UPF_BOOT_AUTOCONF | UPF_FIXED_PORT | UPF_IOREMAP; + up.port.type = PORT_16750; + up.port.flags = UPF_FIXED_PORT | UPF_IOREMAP | UPF_FIXED_TYPE; up.port.dev = &pdev->dev; up.port.private_data = priv;