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net-next: stmmac: Add dwmac-sun8i

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The dwmac-sun8i is a heavy hacked version of stmmac hardware by
allwinner.
In fact the only common part is the descriptor management and the first
register function.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
LABBE Corentin
2017-05-31 09:18:36 +02:00
committed by David S. Miller
parent ce5a4ff3c5
commit 9f93ac8d40
6 changed files with 1025 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/net/ethernet/stmicro/stmmac/Kconfig
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@@ -145,6 +145,17 @@ config DWMAC_SUNXI
This selects Allwinner SoC glue layer support for the
stmmac device driver. This driver is used for A20/A31
GMAC ethernet controller.
config DWMAC_SUN8I
tristate "Allwinner sun8i GMAC support"
default ARCH_SUNXI
depends on OF && (ARCH_SUNXI || COMPILE_TEST)
---help---
Support for Allwinner H3 A83T A64 EMAC ethernet controllers.
This selects Allwinner SoC glue layer support for the
stmmac device driver. This driver is used for H3/A83T/A64
EMAC ethernet controller.
endif
config STMMAC_PCI

1
drivers/net/ethernet/stmicro/stmmac/Makefile
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@@ -16,6 +16,7 @@ obj-$(CONFIG_DWMAC_SOCFPGA) += dwmac-altr-socfpga.o
obj-$(CONFIG_DWMAC_STI) += dwmac-sti.o
obj-$(CONFIG_DWMAC_STM32) += dwmac-stm32.o
obj-$(CONFIG_DWMAC_SUNXI) += dwmac-sunxi.o
obj-$(CONFIG_DWMAC_SUN8I) += dwmac-sun8i.o
obj-$(CONFIG_DWMAC_DWC_QOS_ETH) += dwmac-dwc-qos-eth.o
obj-$(CONFIG_DWMAC_GENERIC) += dwmac-generic.o
stmmac-platform-objs:= stmmac_platform.o

990
drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c Normal file
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File diff suppressed because it is too large Load Diff

15
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
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@@ -235,6 +235,17 @@ static void stmmac_clk_csr_set(struct stmmac_priv *priv)
else if ((clk_rate >= CSR_F_250M) && (clk_rate < CSR_F_300M))
priv->clk_csr = STMMAC_CSR_250_300M;
}
if (priv->plat->has_sun8i) {
if (clk_rate > 160000000)
priv->clk_csr = 0x03;
else if (clk_rate > 80000000)
priv->clk_csr = 0x02;
else if (clk_rate > 40000000)
priv->clk_csr = 0x01;
else
priv->clk_csr = 0;
}
}
static void print_pkt(unsigned char *buf, int len)
@@ -3955,6 +3966,10 @@ static int stmmac_hw_init(struct stmmac_priv *priv)
priv->hw = mac;
/* dwmac-sun8i only work in chain mode */
if (priv->plat->has_sun8i)
chain_mode = 1;
/* To use the chained or ring mode */
if (priv->synopsys_id >= DWMAC_CORE_4_00) {
priv->hw->mode = &dwmac4_ring_mode_ops;

9
drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
View File

@@ -309,6 +309,12 @@ static int stmmac_dt_phy(struct plat_stmmacenet_data *plat,
struct device_node *np, struct device *dev)
{
bool mdio = true;
static const struct of_device_id need_mdio_ids[] = {
{ .compatible = "snps,dwc-qos-ethernet-4.10" },
{ .compatible = "allwinner,sun8i-a83t-emac" },
{ .compatible = "allwinner,sun8i-h3-emac" },
{ .compatible = "allwinner,sun50i-a64-emac" },
};
/* If phy-handle property is passed from DT, use it as the PHY */
plat->phy_node = of_parse_phandle(np, "phy-handle", 0);
@@ -325,8 +331,7 @@ static int stmmac_dt_phy(struct plat_stmmacenet_data *plat,
mdio = false;
}
/* exception for dwmac-dwc-qos-eth glue logic */
if (of_device_is_compatible(np, "snps,dwc-qos-ethernet-4.10")) {
if (of_match_node(need_mdio_ids, np)) {
plat->mdio_node = of_get_child_by_name(np, "mdio");
} else {
/**

1
include/linux/stmmac.h
View File

@@ -186,6 +186,7 @@ struct plat_stmmacenet_data {
struct reset_control *stmmac_rst;
struct stmmac_axi *axi;
int has_gmac4;
bool has_sun8i;
bool tso_en;
int mac_port_sel_speed;
bool en_tx_lpi_clockgating;