In KSZ8463 register's layout, the offset between port 1 and port 2 registers isn't the same in the generic control register area than in the PTP register area. The get_port_addr() always uses the same offset so it doesn't work when it's used to access PTP registers. Adapt the port offset in get_port_addr() when the accessed register is in the PTP area. Signed-off-by: Bastien Curutchet (Schneider Electric) --- drivers/net/dsa/microchip/ksz8.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/dsa/microchip/ksz8.c b/drivers/net/dsa/microchip/ksz8.c index c354abdafc1b542a32c276ef939a90db30c67f55..a05527899b8bab6d53509ba38c58101b79e98ee5 100644 --- a/drivers/net/dsa/microchip/ksz8.c +++ b/drivers/net/dsa/microchip/ksz8.c @@ -2020,6 +2020,9 @@ u32 ksz8_get_port_addr(int port, int offset) u32 ksz8463_get_port_addr(int port, int offset) { + if (offset >= KSZ8463_PTP_CLK_CTRL) + return offset + 0x20 * port; + return offset + 0x18 * port; } -- 2.52.0