Hi Vinod,
On 12/02/2019 16.19, Vinod Koul wrote:
> Per "Documentation/devicetree/bindings/net/ethernet.txt" RGMII mode
> should not have delay in PHY whereas RGMII_ID and RGMII_RXID/RGMII_TXID
> can have delay in phy.
>
> So disable the delay only for RGMII mode and disable for other modes
s/disable for other modes/enable for other modes
Works fine on am335x-evmsk:
Tested-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
and few comment
> Fixes: cd28d1d6e52e: ("net: phy: at803x: Disable phy delay for RGMII mode")
> Reported-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
> Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx>
> ---
> drivers/net/phy/at803x.c | 33 ++++++++++++++++++++++++++-------
> 1 file changed, 26 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c
> index 8ff12938ab47..7b54b54e3316 100644
> --- a/drivers/net/phy/at803x.c
> +++ b/drivers/net/phy/at803x.c
> @@ -110,6 +110,18 @@ static int at803x_debug_reg_mask(struct phy_device *phydev, u16 reg,
> return phy_write(phydev, AT803X_DEBUG_DATA, val);
> }
>
> +static inline int at803x_enable_rx_delay(struct phy_device *phydev)
> +{
> + return at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_0, 0,
> + AT803X_DEBUG_RX_CLK_DLY_EN);
> +}
static inline int at803x_select_rx_delay(struct phy_device *phydev,
bool enable)
{
}
> +
> +static inline int at803x_enable_tx_delay(struct phy_device *phydev)
> +{
> + return at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_5, 0,
> + AT803X_DEBUG_TX_CLK_DLY_EN);
> +}
static inline int at803x_select_tx_delay(struct phy_device *phydev,
bool enable)
{
}
perhaps?
> +
> static inline int at803x_disable_rx_delay(struct phy_device *phydev)
> {
> return at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_0,
> @@ -255,18 +267,25 @@ static int at803x_config_init(struct phy_device *phydev)
> if (ret < 0)
> return ret;
>
> - if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID ||
> - phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
> - phydev->interface == PHY_INTERFACE_MODE_RGMII) {
> + if (phydev->interface == PHY_INTERFACE_MODE_RGMII) {
> ret = at803x_disable_rx_delay(phydev);
> if (ret < 0)
> return ret;
> + ret = at803x_disable_tx_delay(phydev);
> + if (ret < 0)
> + return ret;
is it a possibility to have PHY_INTERFACE_MODE_RGMII and other RGMII_ID
|| RGMII_TXID || RGMII_RXID set at the same time?
if not you can just return from here, no need to check for other RGMII
modes?
> + };
> +
> + if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
> + phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {
> + ret = at803x_enable_rx_delay(phydev);
> + if (ret < 0)
> + return ret;
> }
>
> - if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID ||
> - phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
> - phydev->interface == PHY_INTERFACE_MODE_RGMII) {
> - ret = at803x_disable_tx_delay(phydev);
> + if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
> + phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {
> + ret = at803x_enable_tx_delay(phydev);
> if (ret < 0)
> return ret;
> }
>
- Péter
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