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>
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@ -19,8 +19,6 @@
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#include <stdint.h>
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#include <soc/iomap.h>
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#define SMB_SPEED_400KHZ (66000000 / (400000 * 4))
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/*
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* Between 1-10 seconds, We should never timeout normally
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* Longer than this is just painful when a timeout condition occurs.
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@ -253,8 +253,11 @@ void sb_read_mode(u32 mode)
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static void fch_smbus_init(void)
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{
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/* 400 kHz smbus speed. */
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const uint8_t smbus_speed = (66000000 / (400000 * 4));
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pm_write8(SMB_ASF_IO_BASE, SMB_BASE_ADDR >> 8);
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smbus_write8(SMBTIMING, SMB_SPEED_400KHZ);
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smbus_write8(SMBTIMING, smbus_speed);
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/* Clear all SMBUS status bits */
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smbus_write8(SMBHSTSTAT, SMBHST_STAT_CLEAR);
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smbus_write8(SMBSLVSTAT, SMBSLV_STAT_CLEAR);
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