diff mbox series

[net-next] net: wwan: t7xx: Change PM_AUTOSUSPEND_MS to 5000

Message ID 20241106104005.337968-1-wojackbb@gmail.com (mailing list archive)
State New
Headers show
Series [net-next] net: wwan: t7xx: Change PM_AUTOSUSPEND_MS to 5000 | expand

Commit Message

吳逼逼 Nov. 6, 2024, 10:40 a.m. UTC 
From: Jack Wu <wojackbb@gmail.com>

Because optimizing the power consumption of t7XX,
change auto suspend time to 5000.

The Tests uses a script to loop through the power_state
of t7XX.
(for example: /sys/bus/pci/devices/0000\:72\:00.0/power_state)

* If Auto suspend is 20 seconds,
  test script show power_state have 0~5% of the time was in D3 state
  when host don't have data packet transmission.

* Changed auto suspend time to 5 seconds,
  test script show power_state have 50%~80% of the time was in D3 state
  when host don't have data packet transmission.

Signed-off-by: Jack Wu <wojackbb@gmail.com>
---
 drivers/net/wwan/t7xx/t7xx_pci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Andrew Lunn Nov. 6, 2024, 6:04 p.m. UTC | #1 
On Wed, Nov 06, 2024 at 06:40:05PM +0800, wojackbb@gmail.com wrote:
> From: Jack Wu <wojackbb@gmail.com>
> 
> Because optimizing the power consumption of t7XX,
> change auto suspend time to 5000.
> 
> The Tests uses a script to loop through the power_state
> of t7XX.
> (for example: /sys/bus/pci/devices/0000\:72\:00.0/power_state)
> 
> * If Auto suspend is 20 seconds,
>   test script show power_state have 0~5% of the time was in D3 state
>   when host don't have data packet transmission.
> 
> * Changed auto suspend time to 5 seconds,
>   test script show power_state have 50%~80% of the time was in D3 state
>   when host don't have data packet transmission.

Please add the justification for changing this globally, that you
tested a number of different machines using the t7xx and they all
benefited from this.

    Andrew

---
pw-bot: cr
Andrew Lunn Nov. 6, 2024, 6:07 p.m. UTC | #2 
On Wed, Nov 06, 2024 at 06:40:05PM +0800, wojackbb@gmail.com wrote:
> From: Jack Wu <wojackbb@gmail.com>

FYI: The net-next should be inside the [] with PATCH:
[PATCH net-next]

Use --subject-prefix= with git format-patch.

You should also put the patch version in there:

[PATCH net-next v42]

	Andrew
diff mbox series

Patch

diff --git a/drivers/net/wwan/t7xx/t7xx_pci.c b/drivers/net/wwan/t7xx/t7xx_pci.c
index e556e5bd49ab..dcadd615a025 100644
--- a/drivers/net/wwan/t7xx/t7xx_pci.c
+++ b/drivers/net/wwan/t7xx/t7xx_pci.c
@@ -48,7 +48,7 @@ 
 #define T7XX_INIT_TIMEOUT		20
 #define PM_SLEEP_DIS_TIMEOUT_MS		20
 #define PM_ACK_TIMEOUT_MS		1500
-#define PM_AUTOSUSPEND_MS		20000
+#define PM_AUTOSUSPEND_MS		5000
 #define PM_RESOURCE_POLL_TIMEOUT_US	10000
 #define PM_RESOURCE_POLL_STEP_US	100