mb/google/nissa/var/pujjoniru: Tune I2C_5 parameters
1. Modify the I2C frequency of the touchpad to below 400 KHz to meet the spec. 2. Modify the Thd dat of DATA between 0.3 us and 0.9 us to meet the spec. Before: I2C5 - 407KHz Thd - 0.06us After: I2C5 - 387Khz Thd - 0.34us BUG=b:391796230,b:391788680 TEST=Check that the wave form meets the spec. Change-Id: I3c8c8d3b78236247ca7be810ac152085f615a6ef Signed-off-by: Hualin Wei <weihualin@huaqin.corp-partner.google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/86324 Reviewed-by: Eric Lai <ericllai@google.com> Reviewed-by: Qinghong Zeng <zengqinghong@huaqin.corp-partner.google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Subrata Banik <subratabanik@google.com>
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1 changed files with 3 additions and 3 deletions
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@ -82,9 +82,9 @@ chip soc/intel/alderlake
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.speed = I2C_SPEED_FAST,
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.speed_config[0] = {
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.speed = I2C_SPEED_FAST,
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.scl_lcnt = 152,
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.scl_hcnt = 79,
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.sda_hold = 7,
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.scl_lcnt = 150,
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.scl_hcnt = 85,
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.sda_hold = 35,
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}
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},
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}"
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