UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

dp83640: Program pulsewidth2 values of perout triggers 0 and 1 

Periodic output triggers 0 and 1 of the dp83640 has a programmable
duty-cycle which is controlled by the Pulsewidth2 field of the trigger
data register.  This field is not documented in the datasheet, but it
is described in the "PHYTER Software Development Guide" section
3.1.4.1. Failing to set the field can result in unstable/no trigger
output.

Add programming of the Pulsewidth2 field, setting it to the same value
as the Pulsewidth field for a 50% duty cycle.

Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stefan Sørensen 2014-06-27 12:05:29 +02:00 committed by David S. Miller
parent b6fd8b7fa1
commit 35e872ae63
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/net/phy/dp83640.c
View File

@ -353,6 +353,11 @@ static int periodic_output(struct dp83640_clock *clock,
ext_write(0, phydev, PAGE4, PTP_TDR, sec >> 16); /* sec[31:16] */
ext_write(0, phydev, PAGE4, PTP_TDR, pwidth & 0xffff); /* ns[15:0] */
ext_write(0, phydev, PAGE4, PTP_TDR, pwidth >> 16); /* ns[31:16] */
/* Triggers 0 and 1 has programmable pulsewidth2 */
if (trigger < 2) {
ext_write(0, phydev, PAGE4, PTP_TDR, pwidth & 0xffff);
ext_write(0, phydev, PAGE4, PTP_TDR, pwidth >> 16);
}
/*enable trigger*/
val &= ~TRIG_LOAD;