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 phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3BCB0C4332F for ; Fri, 11 Nov 2022 07:30:46 +0000 (UTC) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 0B02F850D2; Fri, 11 Nov 2022 08:30:44 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=aspeedtech.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id E1CB3850D2; Fri, 11 Nov 2022 08:30:42 +0100 (CET) Received: from twspam01.aspeedtech.com (twspam01.aspeedtech.com [211.20.114.71]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 4597F85041 for ; Fri, 11 Nov 2022 08:30:37 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=aspeedtech.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=dylan_hung@aspeedtech.com Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 2AB76Y49081437; Fri, 11 Nov 2022 15:06:34 +0800 (GMT-8) (envelope-from dylan_hung@aspeedtech.com) Received: from DylanHung-PC.aspeed.com (192.168.2.216) by TWMBX02.aspeed.com (192.168.0.24) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 11 Nov 2022 15:30:16 +0800 From: Dylan Hung To: , , , , CC: Subject: [PATCH 0/3] Improve AST26x0 DDR4 timing and signal quality Date: Fri, 11 Nov 2022 15:30:05 +0800 Message-ID: <20221111073008.16364-1-dylan_hung@aspeedtech.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [192.168.2.216] X-ClientProxiedBy: TWMBX02.aspeed.com (192.168.0.24) To TWMBX02.aspeed.com (192.168.0.24) X-DNSRBL: X-MAIL: twspam01.aspeedtech.com 2AB76Y49081437 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.6 at phobos.denx.de X-Virus-Status: Clean This patch series fine-tunes the read & write DQS/DQ timing, CLK/CA timing and termination (RTT_NOM, RTT_PARK and RTT_WR) for Aspeed AST26x0 SOC to get better signal quality and hence improve the stability. Also, a typing error of the DDR-PHY status polling is fixed. Dylan Hung (3): ram: ast2600: Fix incorrect statement of the register polling ram: ast2600: Improve ddr4 timing and signal quality ram: ast2600: Align the RL and WL setting .../include/asm/arch-aspeed/sdram_ast2600.h | 4 + drivers/ram/aspeed/sdram_ast2600.c | 179 +++++++++++++++--- 2 files changed, 152 insertions(+), 31 deletions(-) -- 2.25.1