From patchwork Fri Jun 19 12:57:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Faiz Abbas X-Patchwork-Id: 11614119 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 3A87614B7 for ; Fri, 19 Jun 2020 12:59:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1F23320DD4 for ; Fri, 19 Jun 2020 12:59:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="VCEh6Zra" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732696AbgFSM6j (ORCPT ); Fri, 19 Jun 2020 08:58:39 -0400 Received: from lelv0142.ext.ti.com ([198.47.23.249]:51696 "EHLO lelv0142.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732677AbgFSM6g (ORCPT ); Fri, 19 Jun 2020 08:58:36 -0400 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id 05JCwRex082673; Fri, 19 Jun 2020 07:58:27 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1592571507; bh=gGgeNDrwJZDmhTBHIA/rEns/YYGEnKJCgBn0VXHZTQg=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=VCEh6ZraffXfp5+42J0kt9MPgGJyWtMrXIQr6UBcA4kXsJy/r1QMxUoq/04fBOgoS aBEYk65lorUnsMSG8M+Upns3K3IewUPkFw8OM//PUUB0H0RqJcNGYi44y+4qLe+NiN gzc9e2cJXeeVwVfI2wGRJW+kRLEx6OPIBTiVwS7w= Received: from DLEE108.ent.ti.com (dlee108.ent.ti.com [157.170.170.38]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 05JCwRbB105835 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 19 Jun 2020 07:58:27 -0500 Received: from DLEE101.ent.ti.com (157.170.170.31) by DLEE108.ent.ti.com (157.170.170.38) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3; Fri, 19 Jun 2020 07:58:27 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DLEE101.ent.ti.com (157.170.170.31) 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; Fri, 19 Jun 2020 07:58:26 -0500 Received: from a0230074-Latitude-E7470.ent.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id 05JCw2Hp015675; Fri, 19 Jun 2020 07:58:23 -0500 From: Faiz Abbas To: , , , , , , , , CC: Subject: [PATCH 5/7] mmc: sdhci_am654: Update delay chain configuration Date: Fri, 19 Jun 2020 18:27:59 +0530 Message-ID: <20200619125801.9530-6-faiz_abbas@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200619125801.9530-1-faiz_abbas@ti.com> References: <20200619125801.9530-1-faiz_abbas@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org For speed modes where DLL is not enabled write to TXDLYCLK to enable transmitter delay chain mode. Signed-off-by: Faiz Abbas --- 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 8b0f69012d09..f7535ee3a232 100644 --- a/drivers/mmc/host/sdhci_am654.c +++ b/drivers/mmc/host/sdhci_am654.c @@ -61,6 +61,8 @@ #define CALDONE_MASK BIT(CALDONE_SHIFT) #define RETRIM_SHIFT 17 #define RETRIM_MASK BIT(RETRIM_SHIFT) +#define SELDLYTXCLK_SHIFT 17 +#define SELDLYTXCLK_MASK BIT(SELDLYTXCLK_SHIFT) #define DRIVER_STRENGTH_50_OHM 0x0 #define DRIVER_STRENGTH_33_OHM 0x1 @@ -228,8 +230,14 @@ static void sdhci_am654_set_clock(struct sdhci_host *host, unsigned int clock) regmap_update_bits(sdhci_am654->base, PHY_CTRL4, mask, val); - if (timing > MMC_TIMING_UHS_SDR25 && clock > CLOCK_TOO_SLOW_HZ) + if (timing > MMC_TIMING_UHS_SDR25 && clock > CLOCK_TOO_SLOW_HZ) { + regmap_update_bits(sdhci_am654->base, PHY_CTRL5, + SELDLYTXCLK_MASK, 0); sdhci_am654_setup_dll(host, clock); + } else { + regmap_update_bits(sdhci_am654->base, PHY_CTRL5, + SELDLYTXCLK_MASK, 1 << SELDLYTXCLK_SHIFT); + } } static void sdhci_j721e_4bit_set_clock(struct sdhci_host *host,