lfs/kernel_drivers_examples

mirror of https://github.com/54shady/kernel_drivers_examples.git synced 2026-01-13 16:02:37 +00:00

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zeroway d002a6e073 Using more powerful makefile, just type make

2019-01-23 14:59:18 +00:00

..

.gitignore

wait_event_interrupt example

2017-09-08 19:21:04 +08:00

Makefile

Using more powerful makefile, just type make

2019-01-23 14:59:18 +00:00

power_domain00.png

Gpio power domain

2018-05-03 09:57:41 +08:00

power_domain01.png

Gpio power domain

2018-05-03 09:57:41 +08:00

README.md

Gpio power domain

2018-05-03 09:57:41 +08:00

uk_io_test.c

I/O between user and kernel space

2018-03-16 06:02:14 +00:00

uk_io.c

I/O between user and kernel space

2018-03-16 06:02:14 +00:00

uk_io.dtsi

I/O between user and kernel space

2018-03-16 06:02:14 +00:00

vfs_rw.c

Misc : vfs read write example

2018-06-01 17:59:56 +08:00

wei.c

Using more powerful makefile, just type make

2019-01-23 14:59:18 +00:00

wei.dtsi

wait_event_interrupt example

2017-09-08 19:21:04 +08:00

README.md

PowerDomain

WIFI_PWR由GPIO4_D3控制,对应的电源域是APIO3,由datasheet中可以查到

APIO3_VDD电源由PMU上LDO(VCC_WL)提供电源,所以GPIO4_D3上电时序肯定是在VCC_WL之后即使在代码中先操作GPIO4_D3的gpio,后使能regulator,但是用示波器量的结果始终是先有VCC_WL后有GPIO4_D3