[U-Boot] [PATCH v2 18/45] net: mvpp2: adapt mvpp2_defaults_set() to PPv2.2

[Stefan Roese]

From: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>

This commit modifies the mvpp2_defaults_set() function to not do the
loopback and FIFO threshold initialization, which are not needed for
PPv2.2.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Signed-off-by: Stefan Roese <sr at denx.de>
Acked-by: Joe Hershberger <joe.hershberger at ni.com>

---

Changes in v2:
- Added Acked-by from Joe

 drivers/net/mvpp2.c | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/drivers/net/mvpp2.c b/drivers/net/mvpp2.c
index e5b42b9e66..e75979b37a 100644
--- a/drivers/net/mvpp2.c
+++ b/drivers/net/mvpp2.c
@@ -2755,16 +2755,18 @@ static void mvpp2_defaults_set(struct mvpp2_port *port)
 {
 	int tx_port_num, val, queue, ptxq, lrxq;
 
-	/* Configure port to loopback if needed */
-	if (port->flags & MVPP2_F_LOOPBACK)
-		mvpp2_port_loopback_set(port);
-
-	/* Update TX FIFO MIN Threshold */
-	val = readl(port->base + MVPP2_GMAC_PORT_FIFO_CFG_1_REG);
-	val &= ~MVPP2_GMAC_TX_FIFO_MIN_TH_ALL_MASK;
-	/* Min. TX threshold must be less than minimal packet length */
-	val |= MVPP2_GMAC_TX_FIFO_MIN_TH_MASK(64 - 4 - 2);
-	writel(val, port->base + MVPP2_GMAC_PORT_FIFO_CFG_1_REG);
+	if (port->priv->hw_version == MVPP21) {
+		/* Configure port to loopback if needed */
+		if (port->flags & MVPP2_F_LOOPBACK)
+			mvpp2_port_loopback_set(port);
+
+		/* Update TX FIFO MIN Threshold */
+		val = readl(port->base + MVPP2_GMAC_PORT_FIFO_CFG_1_REG);
+		val &= ~MVPP2_GMAC_TX_FIFO_MIN_TH_ALL_MASK;
+		/* Min. TX threshold must be less than minimal packet length */
+		val |= MVPP2_GMAC_TX_FIFO_MIN_TH_MASK(64 - 4 - 2);
+		writel(val, port->base + MVPP2_GMAC_PORT_FIFO_CFG_1_REG);
+	}
 
 	/* Disable Legacy WRR, Disable EJP, Release from reset */
 	tx_port_num = mvpp2_egress_port(port);
-- 
2.12.1