| Message ID | 20210823144504.1249203-4-vadimp@nvidia.com |
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From: Vadim Pasternak <vadimp@nvidia.com>
To: <wsa@the-dreams.de>
CC: <peda@axentia.se>, <linux-i2c@vger.kernel.org>,
Vadim Pasternak <vadimp@nvidia.com>
Subject: [PATCH i2c-next 3/4] i2c: mlxcpld: Reduce polling time for
performance improvement
Date: Mon, 23 Aug 2021 17:45:03 +0300
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| Series |
i2c: mlxcpld: Add fixes and features for transaction polling time setting
|
expand
|
On Mon, Aug 23, 2021 at 05:45:03PM +0300, Vadim Pasternak wrote: > Decrease polling time 'MLXCPLD_I2C_POLL_TIME' from 400 usec to 200 > usec. It improves performance of I2C transactions. > > Reliability of setting polling time to 200 usec has been validated > across all the supported systems. > > Signed-off-by: Vadim Pasternak <vadimp@nvidia.com> Applied to for-next, thanks!
diff --git a/drivers/i2c/busses/i2c-mlxcpld.c b/drivers/i2c/busses/i2c-mlxcpld.c index 015e11c4663f..615f0a98640e 100644 --- a/drivers/i2c/busses/i2c-mlxcpld.c +++ b/drivers/i2c/busses/i2c-mlxcpld.c @@ -27,7 +27,7 @@ #define MLXCPLD_I2C_MAX_ADDR_LEN 4 #define MLXCPLD_I2C_RETR_NUM 2 #define MLXCPLD_I2C_XFER_TO 500000 /* usec */ -#define MLXCPLD_I2C_POLL_TIME 400 /* usec */ +#define MLXCPLD_I2C_POLL_TIME 200 /* usec */ /* LPC I2C registers */ #define MLXCPLD_LPCI2C_CPBLTY_REG 0x0
Decrease polling time 'MLXCPLD_I2C_POLL_TIME' from 400 usec to 200 usec. It improves performance of I2C transactions. Reliability of setting polling time to 200 usec has been validated across all the supported systems. Signed-off-by: Vadim Pasternak <vadimp@nvidia.com> --- drivers/i2c/busses/i2c-mlxcpld.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)