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 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 532D9EB64D7 for ; Fri, 30 Jun 2023 08:05:05 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9F67310E19A; Fri, 30 Jun 2023 08:05:04 +0000 (UTC) Received: from mail-yw1-x1136.google.com (mail-yw1-x1136.google.com [IPv6:2607:f8b0:4864:20::1136]) by gabe.freedesktop.org (Postfix) with ESMTPS id C5AF310E19A for ; Fri, 30 Jun 2023 08:05:02 +0000 (UTC) Received: by mail-yw1-x1136.google.com with SMTP id 00721157ae682-57040e313c5so23637557b3.0 for ; Fri, 30 Jun 2023 01:05:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; t=1688112302; x=1690704302; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=pOdCefwt7Ax9Hfvkk8Lveq+Ut2f18HISZZW5KXVicfQ=; b=kbBM1+oxUiXvU2/QQFm7kB6GyiMo7U1iOTgdHUVThD4ymFZhGi/+nIX9hb984D/xvh 30cJBDNZXVKpVfTZYvtdZjQAlUHrdL3tcXVzFTX6le+fj7HMu2t//8PLwZbkuP3afiK+ 2bSz1dvdgQ07H9PimEwNYDR44LMTPO0YIMVqM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1688112302; x=1690704302; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=pOdCefwt7Ax9Hfvkk8Lveq+Ut2f18HISZZW5KXVicfQ=; b=ZaxSlntk7qJCkrdHkiTnGfnWM5MjvnEt/LxBvG6hYa4qMZX9GB4dlTYHOLw212a+gB ASmMrx78DngepTKJF2/BkHPlVSfViuFfd6L/tpZb6i2BSMNwVeOhqq5j7vQXefUL8NFR xuinPmiW+/+F7KCHfiuTy0LJYNuigEo8BM2sQIvvLVCRzi4yb66cv8wMDeG0eCKkaZOI RiITsl/cOBzVK9Qp/arx6ylr3zA9OPk21Ws63w7KjFzHy1BLTbvCaOll0Kjwk0KKkjI5 ED11krjIy8fnw3dcma1LLTQWpgZL2/iH9YVaVVEuSft2kuS4vtFxhosIF/B9w8WkcEqZ ZAEg== X-Gm-Message-State: ABy/qLY0bfp5DXfwpAC3pS9afhTt78CbA3ZCl9MCugv28HaKAAAv/MDX WbWkG3uhegeOMrSoJ6XuDCdQznHPta9Fda2D+n3SjQ== X-Google-Smtp-Source: APBJJlGfwrmUqIda2skUGU7hqigqtdnfU9GNaAVk+AXsXmSBI2V2PRXoa6/XQ30k0k0b7dVMI7HqfKm1hGeUq+R4sf4= X-Received: by 2002:a0d:ea4e:0:b0:56d:a5a:3c00 with SMTP id t75-20020a0dea4e000000b0056d0a5a3c00mr2168518ywe.17.1688112301984; Fri, 30 Jun 2023 01:05:01 -0700 (PDT) MIME-Version: 1.0 References: <20230615201511.565923-1-marex@denx.de> In-Reply-To: <20230615201511.565923-1-marex@denx.de> From: Jagan Teki Date: Fri, 30 Jun 2023 13:34:50 +0530 Message-ID: Subject: Re: [PATCH] drm: bridge: samsung-dsim: Drain command transfer FIFO before transfer To: Marek Vasut Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Neil Armstrong , Robert Foss , Andrzej Hajda , Jonas Karlman , Jernej Skrabec , dri-devel@lists.freedesktop.org, Marek Szyprowski , Laurent Pinchart Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Fri, Jun 16, 2023 at 1:45=E2=80=AFAM Marek Vasut wrote: > > Wait until the command transfer FIFO is empty before loading in the next > command. The previous behavior where the code waited until command transf= er > FIFO was not full suffered from transfer corruption, where the last comma= nd > in the FIFO could be overwritten in case the FIFO indicates not full, but > also does not have enough space to store another transfer yet. > > Signed-off-by: Marek Vasut > --- Reviewed-by: Jagan Teki Tested-by: Jagan Teki # imx8mm-icore