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[220.128.190.163]) by smtp.gmail.com with ESMTPSA id a23sm1034089pfk.146.2021.06.23.19.56.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Jun 2021 19:56:54 -0700 (PDT) From: Renius Chen To: ulf.hansson@linaro.org, adrian.hunter@intel.com Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, Ben.Chuang@genesyslogic.com.tw, Renius Chen Subject: [PATCH] mmc: sdhci-pci-gli: Finetune GL9763E L1 Entry Delay Date: Thu, 24 Jun 2021 10:56:47 +0800 Message-Id: <20210624025647.101387-1-reniuschengl@gmail.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Finetune the L1 entry delay to 20us for better balance of performance and battery life. Signed-off-by: Renius Chen --- 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); -- 2.27.0