[PATCHv2 net-next 08/16] net: mvpp2: adapt mvpp2_defaults_set() to PPv2.2
From: Thomas Petazzoni <hidden>
Date: 2016-12-28 16:46:24
Also in:
linux-arm-kernel, linux-devicetree
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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 <redacted> --- drivers/net/ethernet/marvell/mvpp2.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-)
diff --git a/drivers/net/ethernet/marvell/mvpp2.c b/drivers/net/ethernet/marvell/mvpp2.c
index 8fc818d..23f2368 100644
--- a/drivers/net/ethernet/marvell/mvpp2.c
+++ b/drivers/net/ethernet/marvell/mvpp2.c@@ -4205,16 +4205,18 @@ 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);
--
2.7.4