Adnan Rahman Chowdhury 994c8cfb29 lib: sbi_timer: Added a conditional wait function which can timeout ...

Motivation: Suppose a peripheral needs to be configured to transmit
data. There is an SFR bit which indicates that the peripheral is ready
to transmit. The firmware should check the bit and will only transmit
data when the peripheral is ready. When the firmware starts polling the
SFR, the peripheral could be busy transmitting/receiving other data so
the firmware must wait till that completes. Assuming that there is no
other way, the firmware shouldn't wait indefinitely.

The function sbi_timer_waitms_until() will constantly check whether a
certain condition is satisfied, or timeout occurs. It can be used for
the cases when a timeout is required.

Signed-off-by: Adnan Rahman Chowdhury <adnan.chowdhury@sifive.com>
Reviewed-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup@brainfault.org>

2022-07-08 14:51:24 +05:30

..

sbi

lib: sbi_timer: Added a conditional wait function which can timeout

2022-07-08 14:51:24 +05:30

sbi_utils

lib: utils/irqchip: Add wrapper for T-HEAD PLIC delegation

2022-06-13 11:54:06 +05:30