diff options
| author | Giuseppe CAVALLARO <peppe.cavallaro@st.com> | 2014-08-27 12:37:49 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-08-30 06:54:36 +0400 |
| commit | 5566401f2f10556776fd199c11d6a02a5e0b7b95 (patch) | |
| tree | b9127a13d0c5df4939c72be2fc618e38e9afaf5c /drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.h | |
| parent | 2b78d348f1bc3396ca1662c6a6177a7fb1ca62ff (diff) | |
| download | linux-5566401f2f10556776fd199c11d6a02a5e0b7b95.tar.xz | |
stmmac: ptp: fix the reference clock
The PTP reference clock, used for setting the addend in the Timestamp Addend
Register, was erroneously hard-coded (as reported in the databook just as
example).
The patch removes the macro named: STMMAC_SYSCLOCK and allows to use a
reference clock (clk_ptp_ref_i) that can be passed from the platform.
If not passed, the main driver clock will be used as default; note that
this can be fine on some platforms.
Note that, prior this patch, using the old STMMAC_SYSCLOCK on some platforms,
as side effect, the ptp clock can move faster/slower than the system clock.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.h')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.h b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.h index 3dbc047622fa..4535df37c227 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.h +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.h @@ -25,8 +25,6 @@ #ifndef __STMMAC_PTP_H__ #define __STMMAC_PTP_H__ -#define STMMAC_SYSCLOCK 62500000 - /* IEEE 1588 PTP register offsets */ #define PTP_TCR 0x0700 /* Timestamp Control Reg */ #define PTP_SSIR 0x0704 /* Sub-Second Increment Reg */ |