diff options
| author | Christian Eggers <ceggers@arri.de> | 2023-01-10 11:49:27 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-01-13 11:40:41 +0300 |
| commit | 1f12ae5b67608f63596642774129abfafa95e9d8 (patch) | |
| tree | 6ef3de03ae38cf456c4336994737c3a9f3b014fa /drivers/net/dsa/microchip/ksz_common.h | |
| parent | a32190b154bde4a3bf2fddb9367aec49be09b15d (diff) | |
| download | linux-1f12ae5b67608f63596642774129abfafa95e9d8.tar.xz | |
net: dsa: microchip: ptp: add periodic output signal
LAN937x and KSZ PTP supported switches has Three Trigger output unit.
This TOU can used to generate the periodic signal for PTP. TOU has the
cycle width register of 32 bit in size and period width register of 24
bit, each value is of 8ns so the pulse width can be maximum 125ms.
Tested using ./testptp -d /dev/ptp0 -p 1000000000 -w 100000000 for
generating the 10ms pulse width
Signed-off-by: Christian Eggers <ceggers@arri.de>
Co-developed-by: Arun Ramadoss <arun.ramadoss@microchip.com>
Signed-off-by: Arun Ramadoss <arun.ramadoss@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa/microchip/ksz_common.h')
| -rw-r--r-- | drivers/net/dsa/microchip/ksz_common.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h index c8b49c86dfe1..7260528e5c57 100644 --- a/drivers/net/dsa/microchip/ksz_common.h +++ b/drivers/net/dsa/microchip/ksz_common.h @@ -477,6 +477,19 @@ static inline int ksz_rmw16(struct ksz_device *dev, u32 reg, u16 mask, return ret; } +static inline int ksz_rmw32(struct ksz_device *dev, u32 reg, u32 mask, + u32 value) +{ + int ret; + + ret = regmap_update_bits(dev->regmap[2], reg, mask, value); + if (ret) + dev_err(dev->dev, "can't rmw 32bit reg 0x%x: %pe\n", reg, + ERR_PTR(ret)); + + return ret; +} + static inline int ksz_write64(struct ksz_device *dev, u32 reg, u64 value) { u32 val[2]; |