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net: stmmac: Add Flexible PPS support

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This adds support for Flexible PPS output (which is equivalent
to per_out output of PTP subsystem).

Tested using an oscilloscope and the following commands:

1) Start PTP4L:
	# ptp4l -A -4 -H -m -i eth0 &
2) Set Flexible PPS frequency:
	# echo <idx> <ts> <tns> <ps> <pns> > /sys/class/ptp/ptpX/period

Where, ts/tns is start time and ps/pns is period time, and ptpX is ptp
of eth0.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: Vitor Soares <soares@synopsys.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jose Abreu
2018-05-31 18:01:27 +01:00
committed by David S. Miller
parent 9db9268fe4
commit 9a8a02c9d4
10 changed files with 145 additions and 3 deletions
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22
drivers/net/ethernet/stmicro/stmmac/dwmac5.h
View File

@@ -11,6 +11,25 @@
#define PRTYEN BIT(1)
#define TMOUTEN BIT(0)
#define MAC_PPS_CONTROL 0x00000b70
#define PPS_MAXIDX(x) ((((x) + 1) * 8) - 1)
#define PPS_MINIDX(x) ((x) * 8)
#define PPSx_MASK(x) GENMASK(PPS_MAXIDX(x), PPS_MINIDX(x))
#define MCGRENx(x) BIT(PPS_MAXIDX(x))
#define TRGTMODSELx(x, val) \
GENMASK(PPS_MAXIDX(x) - 1, PPS_MAXIDX(x) - 2) & \
((val) << (PPS_MAXIDX(x) - 2))
#define PPSCMDx(x, val) \
GENMASK(PPS_MINIDX(x) + 3, PPS_MINIDX(x)) & \
((val) << PPS_MINIDX(x))
#define PPSEN0 BIT(4)
#define MAC_PPSx_TARGET_TIME_SEC(x) (0x00000b80 + ((x) * 0x10))
#define MAC_PPSx_TARGET_TIME_NSEC(x) (0x00000b84 + ((x) * 0x10))
#define TRGTBUSY0 BIT(31)
#define TTSL0 GENMASK(30, 0)
#define MAC_PPSx_INTERVAL(x) (0x00000b88 + ((x) * 0x10))
#define MAC_PPSx_WIDTH(x) (0x00000b8c + ((x) * 0x10))
#define MTL_RXP_CONTROL_STATUS 0x00000ca0
#define RXPI BIT(31)
#define NPE GENMASK(23, 16)
@@ -61,5 +80,8 @@ int dwmac5_safety_feat_dump(struct stmmac_safety_stats *stats,
int index, unsigned long *count, const char **desc);
int dwmac5_rxp_config(void __iomem *ioaddr, struct stmmac_tc_entry *entries,
unsigned int count);
int dwmac5_flex_pps_config(void __iomem *ioaddr, int index,
struct stmmac_pps_cfg *cfg, bool enable,
u32 sub_second_inc, u32 systime_flags);
#endif /* __DWMAC5_H__ */