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arch/arm/samv7/sam_emac: Implement errata workaround for KSZ8061 PHY

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Signed-off-by: Petro Karashchenko <petro.karashchenko@gmail.com>
This commit is contained in:
Petro Karashchenko 2023-12-03 23:31:25 +01:00 committed by Xiang Xiao
parent ce4c70690f
commit a3cd8f921a
2 changed files with 32 additions and 0 deletions
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31
arch/arm/src/samv7/sam_emac.c
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@ -3751,6 +3751,37 @@ static int sam_autonegotiate(struct sam_emac_s *priv)
goto errout;
}
if (priv->phytype == SAMV7_PHY_KSZ8061)
{
ret = sam_phywrite(priv, priv->phyaddr, MII_MMDCONTROL, 0x0001);
if (ret < 0)
{
nerr("ERROR: Failed to write MMDCONTROL\n");
goto errout;
}
ret = sam_phywrite(priv, priv->phyaddr, MII_MMDADDRDATA, 0x0002);
if (ret < 0)
{
nerr("ERROR: Failed to write MMDADDRDATA\n");
goto errout;
}
ret = sam_phywrite(priv, priv->phyaddr, MII_MMDCONTROL, 0x4001);
if (ret < 0)
{
nerr("ERROR: Failed to write MMDCONTROL\n");
goto errout;
}
ret = sam_phywrite(priv, priv->phyaddr, MII_MMDADDRDATA, 0xb61a);
if (ret < 0)
{
nerr("ERROR: Failed to write MMDADDRDATA\n");
goto errout;
}
}
/* Restart Auto_negotiation */
mcr |= MII_MCR_ANRESTART;

1
include/nuttx/net/mii.h
View File

@ -53,6 +53,7 @@
#define MII_PSECONTROL 0x0b /* PSE control register */
#define MII_PSESTATUS 0x0c /* PSE status register */
#define MII_MMDCONTROL 0x0d /* MMD access control register */
#define MII_MMDADDRDATA 0x0e /* MMD access address data register */
#define MII_ESTATUS 0x0f /* Extended status register */
/* Extended Registers: Registers 16-31 may be used for vendor specific