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@xxxxxxxxxx>
---
drivers/net/dsa/microchip/ksz9477.c | 7 ++++++-
drivers/net/dsa/microchip/ksz_common.c | 6 ++++++
drivers/net/dsa/microchip/ksz_common.h | 1 +
3 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c
index 353b5f981740..33d52050cd68 100644
--- a/drivers/net/dsa/microchip/ksz9477.c
+++ b/drivers/net/dsa/microchip/ksz9477.c
@@ -222,9 +222,14 @@ static int ksz9477_reset_switch(struct ksz_device *dev)
(BROADCAST_STORM_VALUE *
BROADCAST_STORM_PROT_RATE) / 100);
- if (dev->synclko_125)
+ if (dev->synclko_disable)
+ ksz_write8(dev, REG_SW_GLOBAL_OUTPUT_CTRL__1, 0);
+ else if (dev->synclko_125)
ksz_write8(dev, REG_SW_GLOBAL_OUTPUT_CTRL__1,
SW_ENABLE_REFCLKO | SW_REFCLKO_IS_125MHZ);
+ else
+ ksz_write8(dev, REG_SW_GLOBAL_OUTPUT_CTRL__1,
+ SW_ENABLE_REFCLKO);
return 0;
}
diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index 55dbda04ea62..7e33ec73f803 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -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);
diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h
index df8ae59c8525..3db63f62f0a1 100644
--- a/drivers/net/dsa/microchip/ksz_common.h
+++ b/drivers/net/dsa/microchip/ksz_common.h
@@ -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;
--
2.31.1
