From patchwork Fri Jul 17 08:50:19 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yangbo Lu X-Patchwork-Id: 1330956 X-Patchwork-Delegate: van.freenix@gmail.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=85.214.62.61; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=nxp.com Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4B7Q5375hmz9sPB for ; Fri, 17 Jul 2020 18:58:15 +1000 (AEST) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id A47DC81F02; Fri, 17 Jul 2020 10:57:36 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=nxp.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 26E0181C32; Fri, 17 Jul 2020 10:57:12 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_NONE, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.2 Received: from inva021.nxp.com (inva021.nxp.com [92.121.34.21]) (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 444A881C26 for ; Fri, 17 Jul 2020 10:57:04 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=nxp.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=yangbo.lu@nxp.com Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id F100220087F; Fri, 17 Jul 2020 10:57:03 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 935A5200884; Fri, 17 Jul 2020 10:57:01 +0200 (CEST) Received: from localhost.localdomain (mega.ap.freescale.net [10.192.208.232]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id CC84440313; Fri, 17 Jul 2020 16:56:57 +0800 (SGT) From: Yangbo Lu To: u-boot@lists.denx.de, Peng Fan , Priyanka Jain , 'Jaehoon Chung' Cc: Yangbo Lu Subject: [v2, 06/11] mmc: add a mmc_hs400_prepare_ddr() interface Date: Fri, 17 Jul 2020 16:50:19 +0800 Message-Id: <20200717085024.19385-7-yangbo.lu@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200717085024.19385-1-yangbo.lu@nxp.com> References: <20200717085024.19385-1-yangbo.lu@nxp.com> X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 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 0.102.3 at phobos.denx.de X-Virus-Status: Clean Add a mmc_hs400_prepare_ddr() interface for controllers which needs preparation before switching to DDR mode for HS400 mode. Signed-off-by: Yangbo Lu --- Changes for v2: - None. --- drivers/mmc/mmc-uclass.c | 15 +++++++++++++++ drivers/mmc/mmc.c | 2 ++ include/mmc.h | 15 ++++++++++++++- 3 files changed, 31 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/mmc-uclass.c b/drivers/mmc/mmc-uclass.c index b9f0880..240b205 100644 --- a/drivers/mmc/mmc-uclass.c +++ b/drivers/mmc/mmc-uclass.c @@ -141,6 +141,21 @@ int mmc_set_enhanced_strobe(struct mmc *mmc) } #endif +int dm_mmc_hs400_prepare_ddr(struct udevice *dev) +{ + struct dm_mmc_ops *ops = mmc_get_ops(dev); + + if (ops->hs400_prepare_ddr) + return ops->hs400_prepare_ddr(dev); + + return 0; +} + +int mmc_hs400_prepare_ddr(struct mmc *mmc) +{ + return dm_mmc_hs400_prepare_ddr(mmc->dev); +} + int dm_mmc_host_power_cycle(struct udevice *dev) { struct dm_mmc_ops *ops = mmc_get_ops(dev); diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index a18e75d..e396207 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -1987,6 +1987,8 @@ static int mmc_select_hs400(struct mmc *mmc) /* Set back to HS */ mmc_set_card_speed(mmc, MMC_HS, true); + mmc_hs400_prepare_ddr(mmc); + err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_FLAG); if (err) diff --git a/include/mmc.h b/include/mmc.h index 2399cc2..659df75 100644 --- a/include/mmc.h +++ b/include/mmc.h @@ -513,6 +513,14 @@ struct dm_mmc_ops { * @return maximum number of blocks for this transfer */ int (*get_b_max)(struct udevice *dev, void *dst, lbaint_t blkcnt); + + /** + * hs400_prepare_ddr - prepare to switch to DDR mode + * + * @dev: Device to check + * @return 0 if success, -ve on error + */ + int (*hs400_prepare_ddr)(struct udevice *dev); }; #define mmc_get_ops(dev) ((struct dm_mmc_ops *)(dev)->driver->ops) @@ -540,7 +548,7 @@ int mmc_host_power_cycle(struct mmc *mmc); int mmc_deferred_probe(struct mmc *mmc); int mmc_reinit(struct mmc *mmc); int mmc_get_b_max(struct mmc *mmc, void *dst, lbaint_t blkcnt); - +int mmc_hs400_prepare_ddr(struct mmc *mmc); #else struct mmc_ops { int (*send_cmd)(struct mmc *mmc, @@ -552,6 +560,11 @@ struct mmc_ops { int (*host_power_cycle)(struct mmc *mmc); int (*get_b_max)(struct mmc *mmc, void *dst, lbaint_t blkcnt); }; + +static inline int mmc_hs400_prepare_ddr(struct mmc *mmc) +{ + return 0; +} #endif struct mmc_config {