Commit b5708dc6 authored by Oleksij Rempel's avatar Oleksij Rempel Committed by David S. Miller
Browse files

net: dsa: microchip: KSZ9893: do not write to not supported Output Clock Control Register 



This issue was detected after adding regmap register access validation.
KSZ9893 compatible chips do not have "Output Clock Control Register
0x0103". So, avoid writing to it.

Signed-off-by: default avatarOleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: default avatarVladimir Oltean <olteanv@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9590fc4a

drivers/net/dsa/microchip/ksz9477.c

+5 −0
Original line number Diff line number Diff line
@@ -193,6 +193,11 @@ int ksz9477_reset_switch(struct ksz_device *dev) 
	ksz_write32(dev, REG_SW_PORT_INT_MASK__4, 0x7F);

	ksz_read32(dev, REG_SW_PORT_INT_STATUS__4, &data32);



	/* KSZ9893 compatible chips do not support refclk configuration */

	if (dev->chip_id == KSZ9893_CHIP_ID ||

	    dev->chip_id == KSZ8563_CHIP_ID)

		return 0;



	data8 = SW_ENABLE_REFCLKO;

	if (dev->synclko_disable)

		data8 = 0;