From e7877f52fd4a8d7012f9b0faecc047a50c132a79 Mon Sep 17 00:00:00 2001
From: Vince Bridgers <vbridger@opensource.altera.com>
Date: Wed, 15 Apr 2015 11:17:40 -0500
Subject: [PATCH] stmmac: Read tx-fifo-depth and rx-fifo-depth from the
devicetree
Read the tx-fifo-depth and rx-fifo-depth from the devicetree. The Synopsys
stmmac controller fifos are configurable per product instance, and the fifo
sizes are needed to configure certain features correctly such as flow control.
Signed-off-by: Vince Bridgers <vbridger@opensource.altera.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 4 ++++
include/linux/stmmac.h | 2 ++
2 files changed, 6 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index f9b42f11950f7..705bbdf939405 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -181,6 +181,10 @@ static int stmmac_probe_config_dt(struct platform_device *pdev,
sizeof(struct stmmac_mdio_bus_data),
GFP_KERNEL);
+ of_property_read_u32(np, "tx-fifo-depth", &plat->tx_fifo_size);
+
+ of_property_read_u32(np, "rx-fifo-depth", &plat->rx_fifo_size);
+
plat->force_sf_dma_mode =
of_property_read_bool(np, "snps,force_sf_dma_mode");
diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
index cd63851b57f28..7f484a239f53b 100644
--- a/include/linux/stmmac.h
+++ b/include/linux/stmmac.h
@@ -114,6 +114,8 @@ struct plat_stmmacenet_data {
int maxmtu;
int multicast_filter_bins;
int unicast_filter_entries;
+ int tx_fifo_size;
+ int rx_fifo_size;
void (*fix_mac_speed)(void *priv, unsigned int speed);
void (*bus_setup)(void __iomem *ioaddr);
void *(*setup)(struct platform_device *pdev);
--
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