linux-kernel - [PATCH V2 09/18] i2c: imx-lpi2c: increase PM timeout to avoid operate clk frequently

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Date:   Tue,  6 Apr 2021 19:32:57 +0800
From:   Clark Wang <xiaoning.wang@....com>
To:     aisheng.dong@....com, robh+dt@...nel.org, shawnguo@...nel.org,
        s.hauer@...gutronix.de, festevam@...il.com
Cc:     kernel@...gutronix.de, linux-imx@....com,
        linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH V2 09/18] i2c: imx-lpi2c: increase PM timeout to avoid operate clk frequently

Switching the clock frequently will affect the data transmission
efficiency, and prolong the timeout to reduce autosuspend times for
lpi2c.

Signed-off-by: Clark Wang <xiaoning.wang@....com>
Acked-by: Fugang Duan <fugang.duan@....com>
Reviewed-by: Dong Aisheng <aisheng.dong@....com>
---
V2 changes:
 - No change. Has been reviewed by Dong Aisheng <aisheng.dong@....com> in V1.
---
 drivers/i2c/busses/i2c-imx-lpi2c.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-imx-lpi2c.c b/drivers/i2c/busses/i2c-imx-lpi2c.c
index dfec334712c2..77ceb743b282 100644
--- a/drivers/i2c/busses/i2c-imx-lpi2c.c
+++ b/drivers/i2c/busses/i2c-imx-lpi2c.c
@@ -75,7 +75,7 @@
 #define I2C_CLK_RATIO	2
 #define CHUNK_DATA	256
 
-#define I2C_PM_TIMEOUT		10 /* ms */
+#define I2C_PM_TIMEOUT		1000 /* ms */
 
 enum lpi2c_imx_mode {
 	STANDARD,	/* 100+Kbps */
-- 
2.25.1