a059da947c5e2ca73ed678f0fc0c3d4e40556324 - third_party/github/zephyrproject-rtos/zephyr

commit	a059da947c5e2ca73ed678f0fc0c3d4e40556324	[log] [tgz]
author	Dino Li <Dino.Li@ite.com.tw>	Wed Nov 08 14:11:23 2023 +0800
committer	Fabio Baltieri <fabio.baltieri@gmail.com>	Wed Jan 31 16:43:46 2024 +0000
tree	0bf4875dbc17fb1719a1000d7522bd274881f8a9
parent	d1ad1805674a8f2ea79e18dd11830bec599ed144 [diff]

soc/it8xxx2: add support for raising EC bus to 24MHz

This change was made to reduce read/write EC registers latency.
Without enabling CONFIG_SOC_IT8XXX2_EC_BUS_24MHZ:
- Read EC register 64 times takes 80us latency.
- Write EC register 64 times takes 60us latency.
With enabling CONFIG_SOC_IT8XXX2_EC_BUS_24MHZ:
- Read EC register 64 times takes 40us latency.
- Write EC register 64 times takes 30us latency.

Signed-off-by: Dino Li <Dino.Li@ite.com.tw>

drivers/adc/adc_ite_it8xxx2.c[diff]
drivers/i2c/i2c_ite_it8xxx2.c[diff]
drivers/timer/ite_it8xxx2_timer.c[diff]
soc/riscv/ite_ec/common/check_regs.c[diff]
soc/riscv/ite_ec/common/chip_chipregs.h[diff]
soc/riscv/ite_ec/it8xxx2/Kconfig.soc[diff]
soc/riscv/ite_ec/it8xxx2/soc.c[diff]

7 files changed