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net: dsa: b53: mmap: add phy ops

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[ 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>
This commit is contained in:
Álvaro Fernández Rojas 2023-03-23 20:48:41 +01:00 committed by Greg Kroah-Hartman
parent b33f28ea45
commit a36246a748
1 changed files with 14 additions and 0 deletions
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14
drivers/net/dsa/b53/b53_mmap.c
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@ -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)