mb/google/dedede/var/sasukette: Configure I2C times for touchpad
Configure I2C high / low time in the device tree to ensure I2C CLK runs accurately between 380 kHz and 400 kHz. Measured I2C frequency just as below after tuning: touchpad:390.4 kHz BUG=b:192601250 BRANCH=dedede TEST=Build and check after tuning I2C clock is between 380 kHz and 400 kHz Signed-off-by: Tao Xia <xiatao5@huaqin.corp-partner.google.com> Change-Id: Ibe1603a48a3e841b6a50aa0c703697ec615b2854 Reviewed-on: https://review.coreboot.org/c/coreboot/+/56016 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@mailbox.org> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
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@ -23,8 +23,8 @@ chip soc/intel/jasperlake
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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 = 185,
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.scl_hcnt = 95,
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.scl_lcnt = 180,
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.scl_hcnt = 90,
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.sda_hold = 40,
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}
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},
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