From patchwork Tue Mar 24 18:07:56 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ulf Hansson X-Patchwork-Id: 228760 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=-9.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,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 8F2A6C43331 for ; Tue, 24 Mar 2020 18:08:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6B0CA20719 for ; Tue, 24 Mar 2020 18:08:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="npCbnLl6" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727366AbgCXSIH (ORCPT ); Tue, 24 Mar 2020 14:08:07 -0400 Received: from mail-lf1-f67.google.com ([209.85.167.67]:46315 "EHLO mail-lf1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727034AbgCXSIH (ORCPT ); Tue, 24 Mar 2020 14:08:07 -0400 Received: by mail-lf1-f67.google.com with SMTP id q5so2170387lfb.13 for ; Tue, 24 Mar 2020 11:08:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=5E1VJzGwtosUipNZawyOp6QQ2qvHexwnEsdNcedQu34=; b=npCbnLl6rCS6PMqC396BY+LfqiKGtkTxvbNgpTQM2IG+qbkagX3mG9unHZNiqPbtzN HjcXlqfhLcvKWtacfuTNq6h2S+W2LtoJwe6ag/2hoR2sV02g+Bg4GxOVqDgHtJDqmKeV E2YvasBMpwUUmr9HLSWkWDJNYQ2K2r0o7gHI7umykeQ476OEHHZIZK3oH8Yy+0RR16ZP b4uta55OslLMO+cSMjUzZbvpPXQjvBFDHS8IAMapTmfOY57E9Hf+EFdVzi5aJ3HIojt1 pQgI7Uth/eTjzVLMNLFs8liTp3fpdMWT07yl+50eVkGxgK7nN0nrnmu8Rx8C5TYBYoEi gYKw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=5E1VJzGwtosUipNZawyOp6QQ2qvHexwnEsdNcedQu34=; b=YppyH5cWYl+9OA22Wq5Xh8PQMcHvZLuGTsJgq7SUZRUW3/wgoxipJLRhMH0CNPcsZi XZ6aKV08BjxvAwngWkf8aek6ZkppqLFZPENCRG3ai5XYnT7xyQHX6QOgdrkt2RBYabIY z5R6LpYhrRowzTS/yJUnXdNzRSBcG5bkQ7U01RkxBcI8cbVquqZKYoCimXxFpnX6n3u6 F6nldPiJpo0Ch3is0ncivYxEuMIWalBA9yJaA/F+17aztZ8b8SAXz7Hujlulgjabqo8a E8UQ4OgK91kZfWgMlSBih+kILq2IMLjQwQiQBzDQxu10lJ/3AydJOWpXcEEJo56w62Vx ktMA== X-Gm-Message-State: ANhLgQ0/YLvZH9p77rZV+UYy34hUsymjE3k/x6HxhuRzLKI5wgLBW3fV vMvxmv7vXrcNKJh0rQugVgr8Qg== X-Google-Smtp-Source: ADFU+vvylM9aHeyX1GJIvKdQNfT5GzT5Kc9oSRG5Bbq4LDbH02/g96U9VJ2wPrUj5oqiVl6v76nxrA== X-Received: by 2002:a19:4f01:: with SMTP id d1mr13123052lfb.182.1585073285302; Tue, 24 Mar 2020 11:08:05 -0700 (PDT) Received: from localhost.localdomain (h-158-174-22-210.NA.cust.bahnhof.se. [158.174.22.210]) by smtp.gmail.com with ESMTPSA id s10sm11029858ljp.87.2020.03.24.11.08.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Mar 2020 11:08:04 -0700 (PDT) From: Ulf Hansson To: Greg Kroah-Hartman , Sasha Levin , stable@vger.kernel.org Cc: linux-mmc@vger.kernel.org, Ulf Hansson , Sowjanya Komatineni , Faiz Abbas , Anders Roxell , Naresh Kamboju , Peter Geis Subject: [PATCH 4.19.113 1/5] mmc: core: Allow host controllers to require R1B for CMD6 Date: Tue, 24 Mar 2020 19:07:56 +0100 Message-Id: <20200324180800.28953-2-ulf.hansson@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200324180800.28953-1-ulf.hansson@linaro.org> References: <20200324180800.28953-1-ulf.hansson@linaro.org> MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org [ Upstream commit 1292e3efb149ee21d8d33d725eeed4e6b1ade963 ] It has turned out that some host controllers can't use R1B for CMD6 and other commands that have R1B associated with them. Therefore invent a new host cap, MMC_CAP_NEED_RSP_BUSY to let them specify this. In __mmc_switch(), let's check the flag and use it to prevent R1B responses from being converted into R1. Note that, this also means that the host are on its own, when it comes to manage the busy timeout. Suggested-by: Sowjanya Komatineni Cc: Tested-by: Anders Roxell Tested-by: Sowjanya Komatineni Tested-by: Faiz Abbas Tested-By: Peter Geis Signed-off-by: Ulf Hansson --- drivers/mmc/core/mmc_ops.c | 8 +++++--- include/linux/mmc/host.h | 1 + 2 files changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index 873b2aa0c155..693b99eff74b 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -536,10 +536,12 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, * If the cmd timeout and the max_busy_timeout of the host are both * specified, let's validate them. A failure means we need to prevent * the host from doing hw busy detection, which is done by converting - * to a R1 response instead of a R1B. + * to a R1 response instead of a R1B. Note, some hosts requires R1B, + * which also means they are on their own when it comes to deal with the + * busy timeout. */ - if (timeout_ms && host->max_busy_timeout && - (timeout_ms > host->max_busy_timeout)) + if (!(host->caps & MMC_CAP_NEED_RSP_BUSY) && timeout_ms && + host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) use_r1b_resp = false; cmd.opcode = MMC_SWITCH; diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 840462ed1ec7..7e8e5b20e82b 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -332,6 +332,7 @@ struct mmc_host { MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | \ MMC_CAP_UHS_DDR50) /* (1 << 21) is free for reuse */ +#define MMC_CAP_NEED_RSP_BUSY (1 << 22) /* Commands with R1B can't use R1. */ #define MMC_CAP_DRIVER_TYPE_A (1 << 23) /* Host supports Driver Type A */ #define MMC_CAP_DRIVER_TYPE_C (1 << 24) /* Host supports Driver Type C */ #define MMC_CAP_DRIVER_TYPE_D (1 << 25) /* Host supports Driver Type D */ From patchwork Tue Mar 24 18:07:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ulf Hansson X-Patchwork-Id: 228759 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=-9.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,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 BACCEC41621 for ; Tue, 24 Mar 2020 18:08:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 98B4C2074D for ; Tue, 24 Mar 2020 18:08:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="WzIwycBA" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728020AbgCXSIL (ORCPT ); Tue, 24 Mar 2020 14:08:11 -0400 Received: from mail-lj1-f195.google.com ([209.85.208.195]:44553 "EHLO mail-lj1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727034AbgCXSIK (ORCPT ); Tue, 24 Mar 2020 14:08:10 -0400 Received: by mail-lj1-f195.google.com with SMTP id p14so3907476lji.11 for ; Tue, 24 Mar 2020 11:08:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=W/YxNSIqnPUr4VjEbur5ld6du3CHk+yHVEsRun2OwXw=; b=WzIwycBAI/Nyo5430Z+dYSHJe3138HP7s9AT/1sbgqUv8VU+d+5X8tWuSgs7Cxdimy RynjsTaP+nifzo2kiJGn+veNYVo3jG3zwsm2FLLx9JJ+ZnueEq0V5wbwpQjenN2k1QpU eDLsxL/Bn9OZoVZRae6lh4InQwVmXMVEbg3V9gT9n2AnqtPHvnzsVvmW6/Gdv0Rmi8o3 w1JVDgL0YKsSJEif1QEzbQ7CCEFrgV35pl24DAcfKCoJOx5QZCGxDwPizzboQJGsWhu2 UZ2a9cmvtSAaUSmc3PjW7XRQ02IanguDWkT9IHTl2qOlYJ8iRF1574mK5Ch4zF1e7YJg 9sRg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=W/YxNSIqnPUr4VjEbur5ld6du3CHk+yHVEsRun2OwXw=; b=kFM2LoQqvW4BpBw45Ocv9cI5HibO3GygGNaUnt3X7c/0SZVPMrUyeG5pUEA+2JZ9ag USyhDzn3sTL9c+XzlOCYIXbu34IPCP7k9Jwkn8F/AVtw/HWh1ScUnjSAUgs6++o7nXwG frqlFImWZjt+8lIJS6nMY6xB3/B7jI1W5VqWQ8qNrGHWeOkhl6LbqMwCuaROomU7YtTq ytqRAPCLoIZb4MSxWrdAJdmNP/SMSffzm/rHkac5j3os595J1UJw5SIbALFGQo2BCmd9 IfBk3oiOc0U+C6IYVxgrEaxBq2MRvWpaPZdFlvKg7mDWzRPYKmm6vLclIF8+CJwoFgLI gdxQ== X-Gm-Message-State: ANhLgQ0RpLWL172ZW7Sssol1ztMnf6uhhbReTNY/cj7RwswbDLE98da+ 7Meort2xKG7i6E3ZCW6Hw5ZV0g== X-Google-Smtp-Source: ADFU+vuKgIrcj8NzsvCDj7GQ1mhfxPF3wuWv58i9um0vFVuiWKd8MpP+JfmhjN+VWFrcHuBT1XlNQg== X-Received: by 2002:a2e:b801:: with SMTP id u1mr17057577ljo.84.1585073289261; Tue, 24 Mar 2020 11:08:09 -0700 (PDT) Received: from localhost.localdomain (h-158-174-22-210.NA.cust.bahnhof.se. [158.174.22.210]) by smtp.gmail.com with ESMTPSA id s10sm11029858ljp.87.2020.03.24.11.08.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Mar 2020 11:08:08 -0700 (PDT) From: Ulf Hansson To: Greg Kroah-Hartman , Sasha Levin , stable@vger.kernel.org Cc: linux-mmc@vger.kernel.org, Ulf Hansson , Sowjanya Komatineni , Faiz Abbas , Anders Roxell , Naresh Kamboju Subject: [PATCH 4.19.113 3/5] mmc: core: Respect MMC_CAP_NEED_RSP_BUSY for eMMC sleep command Date: Tue, 24 Mar 2020 19:07:58 +0100 Message-Id: <20200324180800.28953-4-ulf.hansson@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200324180800.28953-1-ulf.hansson@linaro.org> References: <20200324180800.28953-1-ulf.hansson@linaro.org> MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org [ Upstream commit 18d200460cd73636d4f20674085c39e32b4e0097 ] The busy timeout for the CMD5 to put the eMMC into sleep state, is specific to the card. Potentially the timeout may exceed the host->max_busy_timeout. If that becomes the case, mmc_sleep() converts from using an R1B response to an R1 response, as to prevent the host from doing HW busy detection. However, it has turned out that some hosts requires an R1B response no matter what, so let's respect that via checking MMC_CAP_NEED_RSP_BUSY. Note that, if the R1B gets enforced, the host becomes fully responsible of managing the needed busy timeout, in one way or the other. Suggested-by: Sowjanya Komatineni Cc: Link: https://lore.kernel.org/r/20200311092036.16084-1-ulf.hansson@linaro.org Signed-off-by: Ulf Hansson --- drivers/mmc/core/mmc.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index f1fe446eee66..5ca53e225382 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -1901,9 +1901,12 @@ static int mmc_sleep(struct mmc_host *host) * If the max_busy_timeout of the host is specified, validate it against * the sleep cmd timeout. A failure means we need to prevent the host * from doing hw busy detection, which is done by converting to a R1 - * response instead of a R1B. + * response instead of a R1B. Note, some hosts requires R1B, which also + * means they are on their own when it comes to deal with the busy + * timeout. */ - if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { + if (!(host->caps & MMC_CAP_NEED_RSP_BUSY) && host->max_busy_timeout && + (timeout_ms > host->max_busy_timeout)) { cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; } else { cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; From patchwork Tue Mar 24 18:08:00 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ulf Hansson X-Patchwork-Id: 228758 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=-9.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,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 472D1C43331 for ; Tue, 24 Mar 2020 18:08:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2014E20719 for ; Tue, 24 Mar 2020 18:08:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="uwepUZZs" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728026AbgCXSIP (ORCPT ); Tue, 24 Mar 2020 14:08:15 -0400 Received: from mail-lj1-f196.google.com ([209.85.208.196]:46423 "EHLO mail-lj1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728036AbgCXSIP (ORCPT ); Tue, 24 Mar 2020 14:08:15 -0400 Received: by mail-lj1-f196.google.com with SMTP id v16so12593005ljk.13 for ; Tue, 24 Mar 2020 11:08:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=mGIdmSaD4bL8sXYCDOXTAHaizP73PQqueDtC+tJUTFU=; b=uwepUZZsqvuP7LQ8t4z0sM0tNjEGZJINFJ2l1Ek5eoE1GrsnIMloCHRVN4NJwFRXfU fiMV8A2Ej7nRCyCKJLwMUH4MSJ5llHRv75IjRxCr/bd++fTbC269ZKglRJHYLzUtY4z/ cMLJVvHw/YSorN9Jxtdl17Nx5khcoue8cS935EIhflOtaoTThxjZ05mB7sOLujLtpVJ7 RV2YXZ6ZC+wmdIKmw3DGGww3vGQ8Npw1rS6kXbVfZEfk5ndDgtSfipFdNJosg5rOB7Mh XCbRly2hpv4FB0FTFpLIwTfiKrTcxz6oza+hoXtDPR6DMIkzsXeSAg2aleUM6akOkZAE p7WA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=mGIdmSaD4bL8sXYCDOXTAHaizP73PQqueDtC+tJUTFU=; b=ah5EM5LbfQcIvmupGmufPwk6z3v9X6m4E7t7nydZSUkOYhOglgfcMWgLMQUL6m3r6a ReQjfbgFis7GBpFfNQRBNbEMr2ZVY5gbQmlKkK4dbm1qPNx3cEsxf7cQAmBujNUGmoaW alOD0O+tq4wVrpEPwbv9o34yBFa9JOl6xJ8gy/Tj9ToY4VL657v5WAZ5QVu+cu9gZpQR tvrRsoC2bcVzoraFgpqpmE4WpQMYJIi9zlSrJd4BgS7tA05/UHJSzyVnMjLj267mZzr2 +K2VVI+mnRKlEbTjhbT/pnLG7cd+7sPWhYcm8NkFWyV2J33KvKdJDS6l7PKh9AEyzKsq +uQg== X-Gm-Message-State: ANhLgQ0G849cwGazf3U6OzTryxxCn5MYOdTNUhv8ZZWVLeQSo8SU1+kh 1q3YRDOHCzrH2ikjeRNdM56g2Q== X-Google-Smtp-Source: ADFU+vtFbYu+jTNqgRwyr2VDn3JFGCB1OWgIZUWVTILGWVoDJQ+XouDD460jKVCLf/M09JNvHbyQAw== X-Received: by 2002:a2e:9194:: with SMTP id f20mr7293688ljg.33.1585073293744; Tue, 24 Mar 2020 11:08:13 -0700 (PDT) Received: from localhost.localdomain (h-158-174-22-210.NA.cust.bahnhof.se. [158.174.22.210]) by smtp.gmail.com with ESMTPSA id s10sm11029858ljp.87.2020.03.24.11.08.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Mar 2020 11:08:12 -0700 (PDT) From: Ulf Hansson To: Greg Kroah-Hartman , Sasha Levin , stable@vger.kernel.org Cc: linux-mmc@vger.kernel.org, Ulf Hansson , Sowjanya Komatineni , Faiz Abbas , Anders Roxell , Naresh Kamboju , Bitan Biswas , Peter Geis Subject: [PATCH 4.19.113 5/5] mmc: sdhci-tegra: Fix busy detection by enabling MMC_CAP_NEED_RSP_BUSY Date: Tue, 24 Mar 2020 19:08:00 +0100 Message-Id: <20200324180800.28953-6-ulf.hansson@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200324180800.28953-1-ulf.hansson@linaro.org> References: <20200324180800.28953-1-ulf.hansson@linaro.org> MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org [ Upstream commit d2f8bfa4bff5028bc40ed56b4497c32e05b0178f ] It has turned out that the sdhci-tegra controller requires the R1B response, for commands that has this response associated with them. So, converting from an R1B to an R1 response for a CMD6 for example, leads to problems with the HW busy detection support. Fix this by informing the mmc core about the requirement, via setting the host cap, MMC_CAP_NEED_RSP_BUSY. Reported-by: Bitan Biswas Reported-by: Peter Geis Suggested-by: Sowjanya Komatineni Cc: Tested-by: Sowjanya Komatineni Tested-By: Peter Geis Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci-tegra.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index 14d749a0de95..27bdf6d499bd 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -502,6 +502,9 @@ static int sdhci_tegra_probe(struct platform_device *pdev) if (tegra_host->soc_data->nvquirks & NVQUIRK_ENABLE_DDR50) host->mmc->caps |= MMC_CAP_1_8V_DDR; + /* R1B responses is required to properly manage HW busy detection. */ + host->mmc->caps |= MMC_CAP_NEED_RSP_BUSY; + tegra_host->power_gpio = devm_gpiod_get_optional(&pdev->dev, "power", GPIOD_OUT_HIGH); if (IS_ERR(tegra_host->power_gpio)) {