diff options
Diffstat (limited to 'target/linux/sunxi/patches-3.13/151-1-stmmac-fixup-1.patch')
| -rw-r--r-- | target/linux/sunxi/patches-3.13/151-1-stmmac-fixup-1.patch | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/target/linux/sunxi/patches-3.13/151-1-stmmac-fixup-1.patch b/target/linux/sunxi/patches-3.13/151-1-stmmac-fixup-1.patch new file mode 100644 index 0000000..efd7aff --- /dev/null +++ b/target/linux/sunxi/patches-3.13/151-1-stmmac-fixup-1.patch @@ -0,0 +1,77 @@ +From 9cbadf094d9d479413dc8cfa77dff9e732184337 Mon Sep 17 00:00:00 2001 +From: Srinivas Kandagatla <srinivas.kandagatla@st.com> +Date: Thu, 16 Jan 2014 10:51:43 +0000 +Subject: [PATCH] net: stmmac: support max-speed device tree property + +This patch adds support to "max-speed" property which is a standard +Ethernet device tree property. max-speed specifies maximum speed +(specified in megabits per second) supported the device. + +Depending on the clocking schemes some of the boards can only support +few link speeds, so having a way to limit the link speed in the mac +driver would allow such setups to work reliably. + +Without this patch there is no way to tell the driver to limit the +link speed. + +Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> +Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 4 +++- + drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 4 ++++ + include/linux/stmmac.h | 1 + + 3 files changed, 8 insertions(+), 1 deletion(-) + +diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +index ecdc8ab..15192c0 100644 +--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c ++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +@@ -776,6 +776,7 @@ static int stmmac_init_phy(struct net_device *dev) + char phy_id_fmt[MII_BUS_ID_SIZE + 3]; + char bus_id[MII_BUS_ID_SIZE]; + int interface = priv->plat->interface; ++ int max_speed = priv->plat->max_speed; + priv->oldlink = 0; + priv->speed = 0; + priv->oldduplex = -1; +@@ -800,7 +801,8 @@ static int stmmac_init_phy(struct net_device *dev) + + /* Stop Advertising 1000BASE Capability if interface is not GMII */ + if ((interface == PHY_INTERFACE_MODE_MII) || +- (interface == PHY_INTERFACE_MODE_RMII)) ++ (interface == PHY_INTERFACE_MODE_RMII) || ++ (max_speed < 1000 && max_speed > 0)) + phydev->advertising &= ~(SUPPORTED_1000baseT_Half | + SUPPORTED_1000baseT_Full); + +diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c +index 38bd1f4..9377ee6 100644 +--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c ++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c +@@ -42,6 +42,10 @@ static int stmmac_probe_config_dt(struct platform_device *pdev, + *mac = of_get_mac_address(np); + plat->interface = of_get_phy_mode(np); + ++ /* Get max speed of operation from device tree */ ++ if (of_property_read_u32(np, "max-speed", &plat->max_speed)) ++ plat->max_speed = -1; ++ + plat->bus_id = of_alias_get_id(np, "ethernet"); + if (plat->bus_id < 0) + plat->bus_id = 0; +diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h +index bb5deb0..33ace71 100644 +--- a/include/linux/stmmac.h ++++ b/include/linux/stmmac.h +@@ -110,6 +110,7 @@ struct plat_stmmacenet_data { + int force_sf_dma_mode; + int force_thresh_dma_mode; + int riwt_off; ++ int max_speed; + void (*fix_mac_speed)(void *priv, unsigned int speed); + void (*bus_setup)(void __iomem *ioaddr); + int (*init)(struct platform_device *pdev); +-- +1.8.5.5 + |