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authorAida Mynzhasova <aida.mynzhasova@skitlab.ru>2013-09-27 17:40:27 +0400
committerDavid S. Miller <davem@davemloft.net>2013-10-01 08:17:16 +0400
commite58f6f4fb4eada7867014bfaec898f03afbce5c2 (patch)
tree366172a9c3501cb903a488fbecf9f461ed351bf3 /drivers
parent3f3f0960aff951c5df6e42ce292d1593a2520646 (diff)
downloadlinux-e58f6f4fb4eada7867014bfaec898f03afbce5c2.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: Kumar Gala <galak@codeaurora.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/freescale/gianfar_ptp.c4
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) ||