From: Renius Chen <reniuschengl@gmail.com>
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 <reniuschengl@gmail.com>
Subject: [PATCH] mmc: sdhci-pci-gli: Finetune GL9763E L1 Entry Delay
Date: Thu, 24 Jun 2021 10:56:47 +0800 [thread overview]
Message-ID: <20210624025647.101387-1-reniuschengl@gmail.com> (raw)
Finetune the L1 entry delay to 20us for better balance of performance and
battery life.
Signed-off-by: Renius Chen <reniuschengl@gmail.com>
---
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
next reply other threads:[~2021-06-24 2:56 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-24 2:56 Renius Chen [this message]
2021-06-30 12:19 ` [PATCH] mmc: sdhci-pci-gli: Finetune GL9763E L1 Entry Delay Adrian Hunter
2021-06-30 15:15 ` Ulf Hansson
2021-07-01 3:41 ` Renius Chen
2021-07-02 1:29 ` Ben Chuang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210624025647.101387-1-reniuschengl@gmail.com \
--to=reniuschengl@gmail.com \
--cc=Ben.Chuang@genesyslogic.com.tw \
--cc=adrian.hunter@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mmc@vger.kernel.org \
--cc=ulf.hansson@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).