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[23.128.96.18]) by mx.google.com with ESMTP id hq27si15113114ejc.456.2021.06.30.05.20.40; Wed, 30 Jun 2021 05:21:04 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234560AbhF3MWI (ORCPT + 99 others); Wed, 30 Jun 2021 08:22:08 -0400 Received: from mga01.intel.com ([192.55.52.88]:49865 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234459AbhF3MWI (ORCPT ); Wed, 30 Jun 2021 08:22:08 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10030"; a="229973841" X-IronPort-AV: E=Sophos;i="5.83,311,1616482800"; d="scan'208";a="229973841" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Jun 2021 05:19:38 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.83,311,1616482800"; d="scan'208";a="419972224" Received: from ahunter-desktop.fi.intel.com (HELO [10.237.72.79]) ([10.237.72.79]) by fmsmga007.fm.intel.com with ESMTP; 30 Jun 2021 05:19:36 -0700 Subject: Re: [PATCH] mmc: sdhci-pci-gli: Finetune GL9763E L1 Entry Delay To: Renius Chen , ulf.hansson@linaro.org Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, Ben.Chuang@genesyslogic.com.tw References: <20210624025647.101387-1-reniuschengl@gmail.com> From: Adrian Hunter Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Message-ID: Date: Wed, 30 Jun 2021 15:19:54 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <20210624025647.101387-1-reniuschengl@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 24/06/21 5:56 am, Renius Chen wrote: > Finetune the L1 entry delay to 20us for better balance of performance and > battery life. > > Signed-off-by: Renius Chen Acked-by: Adrian Hunter > --- > drivers/mmc/host/sdhci-pci-gli.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/mmc/host/sdhci-pci-gli.c b/drivers/mmc/host/sdhci-pci-gli.c > index 302a7579a9b3..4e3c0561354d 100644 > --- a/drivers/mmc/host/sdhci-pci-gli.c > +++ b/drivers/mmc/host/sdhci-pci-gli.c > @@ -90,7 +90,7 @@ > > #define PCIE_GLI_9763E_CFG2 0x8A4 > #define GLI_9763E_CFG2_L1DLY GENMASK(28, 19) > -#define GLI_9763E_CFG2_L1DLY_MID 0x54 > +#define GLI_9763E_CFG2_L1DLY_MID 0x50 > > #define PCIE_GLI_9763E_MMC_CTRL 0x960 > #define GLI_9763E_HS400_SLOW BIT(3) > @@ -810,7 +810,7 @@ static void gli_set_gl9763e(struct sdhci_pci_slot *slot) > > pci_read_config_dword(pdev, PCIE_GLI_9763E_CFG2, &value); > value &= ~GLI_9763E_CFG2_L1DLY; > - /* set ASPM L1 entry delay to 21us */ > + /* set ASPM L1 entry delay to 20us */ > value |= FIELD_PREP(GLI_9763E_CFG2_L1DLY, GLI_9763E_CFG2_L1DLY_MID); > pci_write_config_dword(pdev, PCIE_GLI_9763E_CFG2, value); > >