diff options
| author | Aaron Durbin <adurbin@chromium.org> | 2020-01-28 10:58:13 -0700 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2020-01-31 17:11:53 +0000 |
| commit | 3bee7df954fd4285f8445c54de90b8a12fdbc9fd (patch) | |
| tree | ddda7792158d9ec40b4ec058ead28b7527b19265 /src/soc/amd/picasso | |
| parent | 178d644d62866728dcce6ec8c4b8552e61dc4647 (diff) | |
soc/amd/picasso: use SMBus speed in compilation unit
The fixed bus speed of 400 kHz doesn't need to reside in a header file.
Just move the assumption into the code itself.
Change-Id: I8bb68607070d0daeae2ad3bcd79f49d5c20048fd
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38613
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Diffstat (limited to 'src/soc/amd/picasso')
| -rw-r--r-- | src/soc/amd/picasso/include/soc/smbus.h | 2 | ||||
| -rw-r--r-- | src/soc/amd/picasso/southbridge.c | 5 |
2 files changed, 4 insertions, 3 deletions
diff --git a/src/soc/amd/picasso/include/soc/smbus.h b/src/soc/amd/picasso/include/soc/smbus.h index c4bc28fdf2..60b8bfa055 100644 --- a/src/soc/amd/picasso/include/soc/smbus.h +++ b/src/soc/amd/picasso/include/soc/smbus.h @@ -19,8 +19,6 @@ #include <stdint.h> #include <soc/iomap.h> -#define SMB_SPEED_400KHZ (66000000 / (400000 * 4)) - /* * Between 1-10 seconds, We should never timeout normally * Longer than this is just painful when a timeout condition occurs. diff --git a/src/soc/amd/picasso/southbridge.c b/src/soc/amd/picasso/southbridge.c index 0dff4bcae3..310d9a2962 100644 --- a/src/soc/amd/picasso/southbridge.c +++ b/src/soc/amd/picasso/southbridge.c @@ -253,8 +253,11 @@ void sb_read_mode(u32 mode) static void fch_smbus_init(void) { + /* 400 kHz smbus speed. */ + const uint8_t smbus_speed = (66000000 / (400000 * 4)); + pm_write8(SMB_ASF_IO_BASE, SMB_BASE_ADDR >> 8); - smbus_write8(SMBTIMING, SMB_SPEED_400KHZ); + smbus_write8(SMBTIMING, smbus_speed); /* Clear all SMBUS status bits */ smbus_write8(SMBHSTSTAT, SMBHST_STAT_CLEAR); smbus_write8(SMBSLVSTAT, SMBSLV_STAT_CLEAR); |