Commit 5ecdd77c authored by Vinod Koul's avatar Vinod Koul Committed by David S. Miller
Browse files

net: dsa: qca8k: disable delay for RGMII mode 



In RGMII mode we should not have any delay in port MAC, so disable
the delay.

Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent cd28d1d6

drivers/net/dsa/qca8k.c

+4 −12
Original line number Diff line number Diff line
@@ -420,7 +420,7 @@ qca8k_mib_init(struct qca8k_priv *priv) 
static int

qca8k_set_pad_ctrl(struct qca8k_priv *priv, int port, int mode)

{

	u32 reg;

	u32 reg, val;



	switch (port) {

	case 0:
@@ -439,17 +439,9 @@ qca8k_set_pad_ctrl(struct qca8k_priv *priv, int port, int mode) 
	 */

	switch (mode) {

	case PHY_INTERFACE_MODE_RGMII:

		qca8k_write(priv, reg,

			    QCA8K_PORT_PAD_RGMII_EN |

			    QCA8K_PORT_PAD_RGMII_TX_DELAY(3) |

			    QCA8K_PORT_PAD_RGMII_RX_DELAY(3));



		/* According to the datasheet, RGMII delay is enabled through

		 * PORT5_PAD_CTRL for all ports, rather than individual port

		 * registers

		 */

		qca8k_write(priv, QCA8K_REG_PORT5_PAD_CTRL,

			    QCA8K_PORT_PAD_RGMII_RX_DELAY_EN);

		/* RGMII mode means no delay so don't enable the delay */

		val = QCA8K_PORT_PAD_RGMII_EN;

		qca8k_write(priv, reg, val);

		break;

	case PHY_INTERFACE_MODE_SGMII:

		qca8k_write(priv, reg, QCA8K_PORT_PAD_SGMII_EN);