diff options
| author | Aida Mynzhasova <aida.mynzhasova@skitlab.ru> | 2013-09-25 11:24:23 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-09-30 22:49:47 +0400 |
| commit | 894116bd0e9b7749a0c4b6c62dec13c2a0ccef68 (patch) | |
| tree | a3e9709ce7d977964417ed27e531763fa7526e5a /drivers/net/ethernet/freescale/gianfar_ptp.c | |
| parent | 559835ea7292e2f09304d81eda16f4209433245e (diff) | |
| download | linux-894116bd0e9b7749a0c4b6c62dec13c2a0ccef68.tar.xz | |
powerpc/83xx: gianfar_ptp: select 1588 clock source through dts file
Currently IEEE 1588 timer reference clock source is determined through
hard-coded value in gianfar_ptp driver. This patch allows to select ptp
clock source by means of device tree file node.
For instance:
fsl,cksel = <0>;
for using external (TSEC_TMR_CLK input) high precision timer
reference clock.
Other acceptable values:
<1> : eTSEC system clock
<2> : eTSEC1 transmit clock
<3> : RTC clock input
When this attribute isn't used, eTSEC system clock will serve as
IEEE 1588 timer reference clock.
Signed-off-by: Aida Mynzhasova <aida.mynzhasova@skitlab.ru>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/freescale/gianfar_ptp.c')
| -rw-r--r-- | drivers/net/ethernet/freescale/gianfar_ptp.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/ethernet/freescale/gianfar_ptp.c b/drivers/net/ethernet/freescale/gianfar_ptp.c index 098f133908ae..e006a09ba899 100644 --- a/drivers/net/ethernet/freescale/gianfar_ptp.c +++ b/drivers/net/ethernet/freescale/gianfar_ptp.c @@ -452,7 +452,9 @@ static int gianfar_ptp_probe(struct platform_device *dev) err = -ENODEV; etsects->caps = ptp_gianfar_caps; - etsects->cksel = DEFAULT_CKSEL; + + if (get_of_u32(node, "fsl,cksel", &etsects->cksel)) + etsects->cksel = DEFAULT_CKSEL; if (get_of_u32(node, "fsl,tclk-period", &etsects->tclk_period) || get_of_u32(node, "fsl,tmr-prsc", &etsects->tmr_prsc) || |