From a87170b166aa20405be629c22fe6d54cc315e8e5 Mon Sep 17 00:00:00 2001 From: Duncan Laurie Date: Thu, 3 Nov 2016 10:43:14 -0700 Subject: lpss_i2c: Increase transaction timeout When doing long transcations on an I2C bus at standard speed we saw that long transactions could go over the 4ms limit while waiting for it to complete on the bus. Increase this so we can use standard speed for testing and debug in firmware. (as there is no way to force standard speed in the kernel) BUG=chrome-os-partner:58666 TEST=boot eve board with cr50 TPM and I2C bus at 100khz Change-Id: I2987ae6a5aa024b373eb088767194c70b0918b6f Signed-off-by: Duncan Laurie Reviewed-on: https://review.coreboot.org/17213 Reviewed-by: Aaron Durbin Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel --- src/soc/intel/common/lpss_i2c.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'src') diff --git a/src/soc/intel/common/lpss_i2c.c b/src/soc/intel/common/lpss_i2c.c index 01747926d0..58d44b85dd 100644 --- a/src/soc/intel/common/lpss_i2c.c +++ b/src/soc/intel/common/lpss_i2c.c @@ -73,8 +73,8 @@ struct lpss_i2c_regs { uint32_t comp_type; } __attribute__((packed)); -/* Use a ~4ms timeout for various operations */ -#define LPSS_I2C_TIMEOUT_US 4000 +/* Use a ~10ms timeout for various operations */ +#define LPSS_I2C_TIMEOUT_US 10000 /* High and low times in different speed modes (in ns) */ enum { -- cgit v1.2.3