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i2c: mlxcpld: Decrease polling time for performance improvement

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Decrease polling time 'MLXCPLD_I2C_POLL_TIME' from 2000 usec to 400
usec. It greatly improves performance of I2C transactions.

Reliability of setting polling time to 400 usec has been thoroughly
validated across all the supported systems.

Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
This commit is contained in:
Vadim Pasternak 2020-12-10 18:51:12 +02:00 committed by Wolfram Sang
parent f069291bd5
commit cb9744178f
1 changed files with 1 additions and 1 deletions
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2
drivers/i2c/busses/i2c-mlxcpld.c
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@ -25,7 +25,7 @@
#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 2000 /* usec */
#define MLXCPLD_I2C_POLL_TIME 400 /* usec */
/* LPC I2C registers */
#define MLXCPLD_LPCI2C_CPBLTY_REG 0x0