From patchwork Wed Sep 23 10:52:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Faiz Abbas X-Patchwork-Id: 11794819 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 383BC618 for ; Wed, 23 Sep 2020 10:53:33 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0898B23119 for ; Wed, 23 Sep 2020 10:53:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="w67gMpAF"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=ti.com header.i=@ti.com header.b="TMvk0e86" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0898B23119 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=ti.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-ID:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=BF/GXiKgyoYRvc5iN64C5r+zZUeV+iI+Pn9V6Co5Ri4=; b=w67gMpAFpCayWB8eSqPKXhL6o fCZSfppqx8rHr/lkRCC9f7/+hae2IRmXFJ/rYCqGuXCplEJbWByH/6BUBD12s2WXfK+kcwhzE0LKa 44xZJAg4H/Iz4owuIncaH5N6QE/iRphM4j+AluKRhsmwTX3GfKgvwXhw+9CgmuWJ1uI+oarPjRJRt 6ctWqLPfPjxGeMmMSzipBiVcR2Ko2L4FYnrNYILCb+u0IAyccxf8YN1pzVHBncSuZAsMwC7VSsgMP Mpwjgd5lgW+4MvxwCCuN7s3myY1fuiadKSrqthRboiBXblL43QFcD6GS9gq96dsOjNJ4HUNe6TuXS YCRpi3NtQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kL2Ok-00013f-8T; Wed, 23 Sep 2020 10:53:18 +0000 Received: from fllv0016.ext.ti.com ([198.47.19.142]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kL2ON-0000uN-HC for linux-arm-kernel@lists.infradead.org; Wed, 23 Sep 2020 10:52:56 +0000 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 08NAqhnj128471; Wed, 23 Sep 2020 05:52:43 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1600858363; bh=RwvV4fff1/3YbuFQjSkZJTR5Z25J5Mw1lL9+HBJUs00=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=TMvk0e86KN9AH15NYeySRL15tjlImJ8mvy9FoGu2ZrkrsQykhEocZTfXnGsPDaLDw FT0Ua6pcwpzONOY6m08+NaWCb+kv4uWWtwjpET9JkY/e2kMsUsYuBX4hrPANNFGLDP t0FouPqpyiTJ4D0anoNg3DhIA+8nBJvREgYv57ds= Received: from DFLE111.ent.ti.com (dfle111.ent.ti.com [10.64.6.32]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 08NAqhBm006131 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 23 Sep 2020 05:52:43 -0500 Received: from DFLE112.ent.ti.com (10.64.6.33) by DFLE111.ent.ti.com (10.64.6.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3; Wed, 23 Sep 2020 05:52:43 -0500 Received: from lelv0327.itg.ti.com (10.180.67.183) by DFLE112.ent.ti.com (10.64.6.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3 via Frontend Transport; Wed, 23 Sep 2020 05:52:43 -0500 Received: from a0230074-Latitude-E7470.ent.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id 08NAq7qn059762; Wed, 23 Sep 2020 05:52:38 -0500 From: Faiz Abbas To: , , , Subject: [PATCH 6/6] mmc: sdhci_am654: Enable tuning for SDR50 Date: Wed, 23 Sep 2020 16:22:06 +0530 Message-ID: <20200923105206.7988-7-faiz_abbas@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200923105206.7988-1-faiz_abbas@ti.com> References: <20200923105206.7988-1-faiz_abbas@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200923_065255_657004_614DD1D6 X-CRM114-Status: GOOD ( 12.92 ) X-Spam-Score: -3.7 (---) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-3.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [198.47.19.142 listed in list.dnswl.org] 0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3) [198.47.19.142 listed in wl.mailspike.net] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders -1.2 DKIMWL_WL_HIGH DKIMwl.org - High trust sender X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: faiz_abbas@ti.com, ulf.hansson@linaro.org, robh+dt@kernel.org, adrian.hunter@intel.com, kishon@ti.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org According to the SW tuning App note[1], tuning is required for all UHS speed modes. Tuning for SDR50 is not enabled in Capabilities by default so enable it from the CTL_CFG registers. [1] https://www.ti.com/lit/pdf/spract9 Signed-off-by: Faiz Abbas --- drivers/mmc/host/sdhci_am654.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/mmc/host/sdhci_am654.c b/drivers/mmc/host/sdhci_am654.c index 5af7638ad606..2bce962bf7e4 100644 --- a/drivers/mmc/host/sdhci_am654.c +++ b/drivers/mmc/host/sdhci_am654.c @@ -19,9 +19,11 @@ /* CTL_CFG Registers */ #define CTL_CFG_2 0x14 +#define CTL_CFG_3 0x18 #define SLOTTYPE_MASK GENMASK(31, 30) #define SLOTTYPE_EMBEDDED BIT(30) +#define TUNINGFORSDR50_MASK BIT(13) /* PHY Registers */ #define PHY_CTRL1 0x100 @@ -646,6 +648,10 @@ static int sdhci_am654_init(struct sdhci_host *host) regmap_update_bits(sdhci_am654->base, CTL_CFG_2, SLOTTYPE_MASK, ctl_cfg_2); + /* Enable tuning for SDR50 */ + regmap_update_bits(sdhci_am654->base, CTL_CFG_3, TUNINGFORSDR50_MASK, + TUNINGFORSDR50_MASK); + ret = sdhci_setup_host(host); if (ret) return ret;