l be called
>> to reconfigure i2c controller. If sda_hold_time is zero, the chipset
>> default hold time will be used, that will be too short for some
>> platforms. Therefore, to have a better tolerance, the DW_IC_SDA_HOLD
>> value should be kept by sda_hold_time.
>
>On Sat, Aug 27, 2016 at 03:39:30PM +0800, Zhuo-hao Lee wrote:
>> There are several ways to set the SDA hold time for i2c controller,
>> including: Device Tree, built-in device properties and ACPI. However,
>> if the SDA hold time is not specified by above method, we should read
>> the value,
behavior.
Thanks
Lee, Zhuo-hao
behavior.
Thanks
Lee, Zhuo-hao
o reduce this periodic interrupt.
The following call path enable hpet timer when system go to suspend, just for
you reference :)
alarmtimer_suspend
--rtc_timer_start
rtc_timer_enqueue
--__rtc_set_alarm
cmos_set_alarm
----------cmos_irq_enable
hpet_set_rtc_irq_bit
Than
o reduce this periodic interrupt.
The following call path enable hpet timer when system go to suspend, just for
you reference :)
alarmtimer_suspend
--rtc_timer_start
rtc_timer_enqueue
--__rtc_set_alarm
cmos_set_alarm
----------cmos_irq_enable
hpet_set_rtc_irq_bit
Than
et_rtc_interrupt continuously until timer
timeout.
This patch only fixed (1). Fixing (1) can avoid (2).
However, The (2) is another story which it is not covered by this patch.
Thanks
Lee, Zhuo-hao
et_rtc_interrupt continuously until timer
timeout.
This patch only fixed (1). Fixing (1) can avoid (2).
However, The (2) is another story which it is not covered by this patch.
Thanks
Lee, Zhuo-hao
{
s = read(fd, , sizeof(uint64_t));
if (s != sizeof(uint64_t))
handle_error("read");
system("cat /proc/driver/rtc |grep rtc_time");
system("cat /proc/interrupts | grep -E 'CPU0|rtc0'");
exit(EXIT_SUCCESS);
{
s = read(fd, , sizeof(uint64_t));
if (s != sizeof(uint64_t))
handle_error("read");
system("cat /proc/driver/rtc |grep rtc_time");
system("cat /proc/interrupts | grep -E 'CPU0|rtc0'");
exit(EXIT_SUCCESS);
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