net: designware: socfpga: Add Arria10 extras
Add wrapper around the designware MAC driver to handle the SoCFPGA
specific configuration bits. On Arria10, this is configuration of
syscon phy_intf.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/drivers/net/dwmac_socfpga.c b/drivers/net/dwmac_socfpga.c
new file mode 100644
index 0000000..08fc967
--- /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,
+};