From: Álvaro Fernández Rojas noltari@gmail.com
[ Upstream commit 45977e58ce65ed0459edc9a0466d9dfea09463f5 ]
Implement phy_read16() and phy_write16() ops for B53 MMAP to avoid accessing B53_PORT_MII_PAGE registers which hangs the device. This access should be done through the MDIO Mux bus controller.
Signed-off-by: Álvaro Fernández Rojas noltari@gmail.com Acked-by: Florian Fainelli f.fainelli@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/dsa/b53/b53_mmap.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)
diff --git a/drivers/net/dsa/b53/b53_mmap.c b/drivers/net/dsa/b53/b53_mmap.c index c628d0980c0b1..1d52cb3e46d52 100644 --- a/drivers/net/dsa/b53/b53_mmap.c +++ b/drivers/net/dsa/b53/b53_mmap.c @@ -215,6 +215,18 @@ static int b53_mmap_write64(struct b53_device *dev, u8 page, u8 reg, return 0; }
+static int b53_mmap_phy_read16(struct b53_device *dev, int addr, int reg, + u16 *value) +{ + return -EIO; +} + +static int b53_mmap_phy_write16(struct b53_device *dev, int addr, int reg, + u16 value) +{ + return -EIO; +} + static const struct b53_io_ops b53_mmap_ops = { .read8 = b53_mmap_read8, .read16 = b53_mmap_read16, @@ -226,6 +238,8 @@ static const struct b53_io_ops b53_mmap_ops = { .write32 = b53_mmap_write32, .write48 = b53_mmap_write48, .write64 = b53_mmap_write64, + .phy_read16 = b53_mmap_phy_read16, + .phy_write16 = b53_mmap_phy_write16, };
static int b53_mmap_probe(struct platform_device *pdev)