Commit 48bf8b8a authored by Robert Hancock's avatar Robert Hancock Committed by David S. Miller
Browse files

net: dsa: microchip: Add property to disable reference clock 



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: default avatarRobert Hancock <robert.hancock@calian.com>
Reviewed-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent eccfecfe

drivers/net/dsa/microchip/ksz9477.c

+6 −3
Original line number Diff line number Diff line
@@ -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;

}

drivers/net/dsa/microchip/ksz_common.c

+6 −0
Original line number Diff line number Diff line
@@ -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);

drivers/net/dsa/microchip/ksz_common.h

+1 −0
Original line number Diff line number Diff line
@@ -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;