From patchwork Mon Aug 26 21:04:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Judith Mendez X-Patchwork-Id: 822556 Received: from lelv0142.ext.ti.com (lelv0142.ext.ti.com [198.47.23.249]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 954DA881E; Mon, 26 Aug 2024 21:04:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.47.23.249 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724706299; cv=none; b=OOpwGUMw2qbU13/dSNHzVKhMRiK5MYqeHIy1/E4VOaWjpIkT9bvkRLB+7CpWCIe0DBj2WSGVmn2ICTgc7ZhOwe3pjQ6oQwKPtD4nniGS+EKNoTGOs6iiJIsjAfoArQG/CBQDY5dcG8Wv0ycIlXtRSSImmeUZlKiVuHDr5dZ96uA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724706299; c=relaxed/simple; bh=JkhJFKFIkm79UbFh96wQZUTAoNWKn4eTgKW9tzvn/98=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=cdKit1ZIH2ZQkAg3hS3xz3EUWwuJUiSxejkrUjZiyy0QNwlpNWzFbC51/UX/8r7TB5mwcAiDsrNt7Lyn+EBMzzC/t0ThxUwGXeR2AdhAfbRR5LAI1DidfxxPewLMX3t0WsW2goFF9zEBRac6oulNsehJn6NlEhwudJInL6y6gn0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ti.com; spf=pass smtp.mailfrom=ti.com; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b=tRIHOkcO; arc=none smtp.client-ip=198.47.23.249 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ti.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ti.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="tRIHOkcO" Received: from lelv0266.itg.ti.com ([10.180.67.225]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id 47QL4tgR123216; Mon, 26 Aug 2024 16:04:55 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1724706295; bh=aTMH6CJkz+UkcfHV2rNhCeL5bfIeJkBghWir786/2Gg=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=tRIHOkcOhfw0nZvGmeExEBssUurZa6XNtbwoxOZPUiLk7J2w/UArIJUvPYOiiwM49 eCHj/8b5izzf1+ZG/Nax/iZfQwHaZ8eYzcIJQPmHJwvRuZspdpH+6nn8u6rNlrukRN iJAFQ9SGzoEcaOcT81CsWLJm4lcMcI3LVnrU64iQ= Received: from DLEE111.ent.ti.com (dlee111.ent.ti.com [157.170.170.22]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 47QL4tI9051938 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 26 Aug 2024 16:04:55 -0500 Received: from DLEE112.ent.ti.com (157.170.170.23) by DLEE111.ent.ti.com (157.170.170.22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Mon, 26 Aug 2024 16:04:55 -0500 Received: from lelvsmtp6.itg.ti.com (10.180.75.249) by DLEE112.ent.ti.com (157.170.170.23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23 via Frontend Transport; Mon, 26 Aug 2024 16:04:54 -0500 Received: from judy-hp.dhcp.ti.com (judy-hp.dhcp.ti.com [128.247.81.105]) by lelvsmtp6.itg.ti.com (8.15.2/8.15.2) with ESMTP id 47QL4sZW089210; Mon, 26 Aug 2024 16:04:54 -0500 From: Judith Mendez To: Ulf Hansson CC: Adrian Hunter , , Subject: [PATCH v3 2/2] mmc: sdhci_am654: Add prints to tuning algorithm Date: Mon, 26 Aug 2024 16:04:54 -0500 Message-ID: <20240826210454.3928033-3-jm@ti.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240826210454.3928033-1-jm@ti.com> References: <20240826210454.3928033-1-jm@ti.com> Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Add debug prints to tuning algorithm for debugging. Also add error print if we fail tuning. Signed-off-by: Judith Mendez --- Changes since v2: - Move struct *dev = mmc_dev() to patch 2/2 --- drivers/mmc/host/sdhci_am654.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci_am654.c b/drivers/mmc/host/sdhci_am654.c index 13da003363e1d..0aa3c40ea6ed8 100644 --- a/drivers/mmc/host/sdhci_am654.c +++ b/drivers/mmc/host/sdhci_am654.c @@ -457,11 +457,13 @@ static int sdhci_am654_calculate_itap(struct sdhci_host *host, struct window if (!num_fails) { /* Retry tuning */ + dev_dbg(dev, "No failing region found, retry tuning\n"); return -1; } if (fail_window->length == ITAPDLY_LENGTH) { /* Retry tuning */ + dev_dbg(dev, "No passing itapdly, retry tuning\n"); return -1; } @@ -505,6 +507,7 @@ static int sdhci_am654_do_tuning(struct sdhci_host *host, struct sdhci_am654_data *sdhci_am654 = sdhci_pltfm_priv(pltfm_host); unsigned char timing = host->mmc->ios.timing; struct window fail_window[ITAPDLY_LENGTH]; + struct device *dev = mmc_dev(host->mmc); u8 curr_pass, itap; u8 fail_index = 0; u8 prev_pass = 1; @@ -525,6 +528,7 @@ static int sdhci_am654_do_tuning(struct sdhci_host *host, if (!curr_pass) { fail_window[fail_index].end = itap; fail_window[fail_index].length++; + dev_dbg(dev, "Failed itapdly=%d\n", itap); } if (curr_pass && !prev_pass) @@ -546,6 +550,7 @@ static int sdhci_am654_platform_execute_tuning(struct sdhci_host *host, struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct sdhci_am654_data *sdhci_am654 = sdhci_pltfm_priv(pltfm_host); unsigned char timing = host->mmc->ios.timing; + struct device *dev = mmc_dev(host->mmc); int itapdly; do { @@ -554,9 +559,12 @@ static int sdhci_am654_platform_execute_tuning(struct sdhci_host *host, break; } while (++sdhci_am654->tuning_loop < RETRY_TUNING_MAX); - if (itapdly < 0) + if (itapdly < 0) { + dev_err(dev, "Failed to find itapdly, fail tuning\n"); return -1; + } + dev_dbg(dev, "Passed tuning, final itapdly=%d\n", itapdly); sdhci_am654_write_itapdly(sdhci_am654, itapdly, sdhci_am654->itap_del_ena[timing]); /* Save ITAPDLY */ sdhci_am654->itap_del_sel[timing] = itapdly;