diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/Kconfig | 8 | ||||
| -rw-r--r-- | drivers/net/Makefile | 1 | ||||
| -rw-r--r-- | drivers/net/dwmac_socfpga.c | 143 |
3 files changed, 152 insertions, 0 deletions
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index f762b0898d..d86da7760e 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -150,6 +150,14 @@ config ETH_DESIGNWARE 100Mbit and 1 Gbit operation. You must enable CONFIG_PHYLIB to provide the PHY (physical media interface). +config ETH_DESIGNWARE_SOCFPGA + bool "Altera SoCFPGA extras for Synopsys Designware Ethernet MAC" + depends on DM_ETH && ETH_DESIGNWARE + help + The Altera SoCFPGA requires additional configuration of the + Altera system manager to correctly interface with the PHY. + This code handles those SoC specifics. + config ETHOC bool "OpenCores 10/100 Mbps Ethernet MAC" help diff --git a/drivers/net/Makefile b/drivers/net/Makefile index c1ed44e21f..48a2878071 100644 --- a/drivers/net/Makefile +++ b/drivers/net/Makefile @@ -14,6 +14,7 @@ obj-$(CONFIG_CALXEDA_XGMAC) += calxedaxgmac.o obj-$(CONFIG_CS8900) += cs8900.o obj-$(CONFIG_TULIP) += dc2114x.o obj-$(CONFIG_ETH_DESIGNWARE) += designware.o +obj-$(CONFIG_ETH_DESIGNWARE_SOCFPGA) += dwmac_socfpga.o obj-$(CONFIG_DRIVER_DM9000) += dm9000x.o obj-$(CONFIG_DNET) += dnet.o obj-$(CONFIG_E1000) += e1000.o diff --git a/drivers/net/dwmac_socfpga.c b/drivers/net/dwmac_socfpga.c new file mode 100644 index 0000000000..08fc9677c4 --- /dev/null +++ b/drivers/net/dwmac_socfpga.c @@ -0,0 +1,143 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2018 Marek Vasut <marex@denx.de> + * + * Altera SoCFPGA EMAC extras + */ + +#include <common.h> +#include <asm/io.h> +#include <dm.h> +#include <clk.h> +#include <phy.h> +#include <regmap.h> +#include <reset.h> +#include <syscon.h> +#include "designware.h" + +#include <asm/arch/system_manager.h> + +enum dwmac_type { + DWMAC_SOCFPGA_GEN5 = 0, + DWMAC_SOCFPGA_ARRIA10, + DWMAC_SOCFPGA_STRATIX10, +}; + +struct dwmac_socfpga_platdata { + struct dw_eth_pdata dw_eth_pdata; + enum dwmac_type type; + void *phy_intf; +}; + +static int dwmac_socfpga_ofdata_to_platdata(struct udevice *dev) +{ + struct dwmac_socfpga_platdata *pdata = dev_get_platdata(dev); + struct regmap *regmap; + struct ofnode_phandle_args args; + void *range; + int ret; + + ret = dev_read_phandle_with_args(dev, "altr,sysmgr-syscon", NULL, + 2, 0, &args); + if (ret) { + dev_err(dev, "Failed to get syscon: %d\n", ret); + return ret; + } + + if (args.args_count != 2) { + dev_err(dev, "Invalid number of syscon args\n"); + return -EINVAL; + } + + regmap = syscon_node_to_regmap(args.node); + if (IS_ERR(regmap)) { + ret = PTR_ERR(regmap); + dev_err(dev, "Failed to get regmap: %d\n", ret); + return ret; + } + + range = regmap_get_range(regmap, 0); + if (!range) { + dev_err(dev, "Failed to get regmap range\n"); + return -ENOMEM; + } + + pdata->phy_intf = range + args.args[0]; + + /* + * Sadly, the Altera DT bindings don't have SoC-specific compatibles, + * so we have to guesstimate which SoC we are running on from the + * DWMAC version. Luckily, Altera at least updated the DWMAC with + * each SoC. + */ + if (ofnode_device_is_compatible(dev->node, "snps,dwmac-3.70a")) + pdata->type = DWMAC_SOCFPGA_GEN5; + + if (ofnode_device_is_compatible(dev->node, "snps,dwmac-3.72a")) + pdata->type = DWMAC_SOCFPGA_ARRIA10; + + if (ofnode_device_is_compatible(dev->node, "snps,dwmac-3.74a")) + pdata->type = DWMAC_SOCFPGA_STRATIX10; + + return designware_eth_ofdata_to_platdata(dev); +} + +static int dwmac_socfpga_probe(struct udevice *dev) +{ + struct dwmac_socfpga_platdata *pdata = dev_get_platdata(dev); + struct eth_pdata *edata = &pdata->dw_eth_pdata.eth_pdata; + struct reset_ctl_bulk reset_bulk; + int ret; + u8 modereg; + + if (pdata->type == DWMAC_SOCFPGA_ARRIA10) { + switch (edata->phy_interface) { + case PHY_INTERFACE_MODE_MII: + case PHY_INTERFACE_MODE_GMII: + modereg = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_GMII_MII; + break; + case PHY_INTERFACE_MODE_RMII: + modereg = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RMII; + break; + case PHY_INTERFACE_MODE_RGMII: + modereg = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RGMII; + break; + default: + dev_err(dev, "Unsupported PHY mode\n"); + return -EINVAL; + } + + ret = reset_get_bulk(dev, &reset_bulk); + if (ret) { + dev_err(dev, "Failed to get reset: %d\n", ret); + return ret; + } + + reset_assert_bulk(&reset_bulk); + + clrsetbits_le32(pdata->phy_intf, + SYSMGR_EMACGRP_CTRL_PHYSEL_MASK, + modereg); + + reset_release_bulk(&reset_bulk); + } + + return designware_eth_probe(dev); +} + +static const struct udevice_id dwmac_socfpga_ids[] = { + { .compatible = "altr,socfpga-stmmac" }, + { } +}; + +U_BOOT_DRIVER(dwmac_socfpga) = { + .name = "dwmac_socfpga", + .id = UCLASS_ETH, + .of_match = dwmac_socfpga_ids, + .ofdata_to_platdata = dwmac_socfpga_ofdata_to_platdata, + .probe = dwmac_socfpga_probe, + .ops = &designware_eth_ops, + .priv_auto_alloc_size = sizeof(struct dw_eth_dev), + .platdata_auto_alloc_size = sizeof(struct dwmac_socfpga_platdata), + .flags = DM_FLAG_ALLOC_PRIV_DMA, +}; |