diff options
| author | Gerhard Engleder <gerhard@engleder-embedded.com> | 2022-05-06 22:01:42 +0200 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2022-05-10 09:48:09 +0200 |
| commit | 0abb62b68252b1beefd553dd80f5b4c0b456bcaf (patch) | |
| tree | 43baba2e7a4bf6193a9f47686f3af405a3923989 /drivers/net/ethernet/engleder/tsnep_hw.h | |
| parent | fcf308e50928a9c9eca90c56f9fc6885005dafd1 (diff) | |
tsnep: Add free running cycle counter support
The TSN endpoint Ethernet MAC supports a free running counter
additionally to its clock. This free running counter can be read and
hardware timestamps are supported. As the name implies, this counter
cannot be set and its frequency cannot be adjusted.
Add free running cycle counter support based on this free running
counter to physical clock. This also requires hardware time stamps
based on that free running counter.
Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com>
Acked-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/net/ethernet/engleder/tsnep_hw.h')
| -rw-r--r-- | drivers/net/ethernet/engleder/tsnep_hw.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/net/ethernet/engleder/tsnep_hw.h b/drivers/net/ethernet/engleder/tsnep_hw.h index 71cc8577d640..916ceac3ada2 100644 --- a/drivers/net/ethernet/engleder/tsnep_hw.h +++ b/drivers/net/ethernet/engleder/tsnep_hw.h @@ -43,6 +43,10 @@ #define ECM_RESET_CHANNEL 0x00000100 #define ECM_RESET_TXRX 0x00010000 +/* counter */ +#define ECM_COUNTER_LOW 0x0028 +#define ECM_COUNTER_HIGH 0x002C + /* control and status */ #define ECM_STATUS 0x0080 #define ECM_LINK_MODE_OFF 0x01000000 @@ -190,7 +194,8 @@ struct tsnep_tx_desc { /* tsnep TX descriptor writeback */ struct tsnep_tx_desc_wb { __le32 properties; - __le32 reserved1[3]; + __le32 reserved1; + __le64 counter; __le64 timestamp; __le32 dma_delay; __le32 reserved2; @@ -221,7 +226,7 @@ struct tsnep_rx_desc_wb { /* tsnep RX inline meta */ struct tsnep_rx_inline { - __le64 reserved; + __le64 counter; __le64 timestamp; }; |