@@ -222,9 +222,12 @@ static int ksz9477_reset_switch(struct ksz_device *dev)
(BROADCAST_STORM_VALUE *
BROADCAST_STORM_PROT_RATE) / 100);
- if (dev->synclko_125)
- ksz_write8(dev, REG_SW_GLOBAL_OUTPUT_CTRL__1,
- SW_ENABLE_REFCLKO | SW_REFCLKO_IS_125MHZ);
+ data8 = SW_ENABLE_REFCLKO;
+ if (dev->synclko_disable)
+ data8 = 0;
+ else if (dev->synclko_125)
+ data8 = SW_ENABLE_REFCLKO | SW_REFCLKO_IS_125MHZ;
+ ksz_write8(dev, REG_SW_GLOBAL_OUTPUT_CTRL__1, data8);
return 0;
}
@@ -434,6 +434,12 @@ int ksz_switch_register(struct ksz_device *dev,
}
dev->synclko_125 = of_property_read_bool(dev->dev->of_node,
"microchip,synclko-125");
+ dev->synclko_disable = of_property_read_bool(dev->dev->of_node,
+ "microchip,synclko-disable");
+ if (dev->synclko_125 && dev->synclko_disable) {
+ dev_err(dev->dev, "inconsistent synclko settings\n");
+ return -EINVAL;
+ }
}
ret = dsa_register_switch(dev->ds);
@@ -75,6 +75,7 @@ struct ksz_device {
u32 regs_size;
bool phy_errata_9477;
bool synclko_125;
+ bool synclko_disable;
struct vlan_table *vlan_cache;
Add a new microchip,synclko-disable property which can be specified to disable the reference clock output from the device if not required by the board design. Signed-off-by: Robert Hancock <robert.hancock@calian.com> --- drivers/net/dsa/microchip/ksz9477.c | 9 ++++++--- drivers/net/dsa/microchip/ksz_common.c | 6 ++++++ drivers/net/dsa/microchip/ksz_common.h | 1 + 3 files changed, 13 insertions(+), 3 deletions(-)