1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * tsi108/109 device setup code 4 * 5 * Maintained by Roy Zang < tie-fei.zang@freescale.com > 6 */ 7 8 #include <linux/stddef.h> 9 #include <linux/kernel.h> 10 #include <linux/init.h> 11 #include <linux/errno.h> 12 #include <linux/major.h> 13 #include <linux/delay.h> 14 #include <linux/irq.h> 15 #include <linux/export.h> 16 #include <linux/device.h> 17 #include <linux/etherdevice.h> 18 #include <linux/platform_device.h> 19 #include <linux/of_net.h> 20 #include <asm/tsi108.h> 21 22 #include <linux/atomic.h> 23 #include <asm/io.h> 24 #include <asm/irq.h> 25 #include <asm/prom.h> 26 #include <mm/mmu_decl.h> 27 28 #undef DEBUG 29 30 #ifdef DEBUG 31 #define DBG(fmt...) do { printk(fmt); } while(0) 32 #else 33 #define DBG(fmt...) do { } while(0) 34 #endif 35 36 static phys_addr_t tsi108_csr_base = -1; 37 38 phys_addr_t get_csrbase(void) 39 { 40 struct device_node *tsi; 41 42 if (tsi108_csr_base != -1) 43 return tsi108_csr_base; 44 45 tsi = of_find_node_by_type(NULL, "tsi-bridge"); 46 if (tsi) { 47 unsigned int size; 48 const void *prop = of_get_property(tsi, "reg", &size); 49 tsi108_csr_base = of_translate_address(tsi, prop); 50 of_node_put(tsi); 51 } 52 return tsi108_csr_base; 53 } 54 55 u32 get_vir_csrbase(void) 56 { 57 return (u32) (ioremap(get_csrbase(), 0x10000)); 58 } 59 60 EXPORT_SYMBOL(get_csrbase); 61 EXPORT_SYMBOL(get_vir_csrbase); 62 63 static int __init tsi108_eth_of_init(void) 64 { 65 struct device_node *np; 66 unsigned int i = 0; 67 struct platform_device *tsi_eth_dev; 68 struct resource res; 69 int ret; 70 71 for_each_compatible_node(np, "network", "tsi108-ethernet") { 72 struct resource r[2]; 73 struct device_node *phy, *mdio; 74 hw_info tsi_eth_data; 75 const unsigned int *phy_id; 76 const void *mac_addr; 77 const phandle *ph; 78 79 memset(r, 0, sizeof(r)); 80 memset(&tsi_eth_data, 0, sizeof(tsi_eth_data)); 81 82 ret = of_address_to_resource(np, 0, &r[0]); 83 DBG("%s: name:start->end = %s:%pR\n", 84 __func__, r[0].name, &r[0]); 85 if (ret) 86 goto err; 87 88 r[1].name = "tx"; 89 r[1].start = irq_of_parse_and_map(np, 0); 90 r[1].end = irq_of_parse_and_map(np, 0); 91 r[1].flags = IORESOURCE_IRQ; 92 DBG("%s: name:start->end = %s:%pR\n", 93 __func__, r[1].name, &r[1]); 94 95 tsi_eth_dev = 96 platform_device_register_simple("tsi-ethernet", i++, &r[0], 97 1); 98 99 if (IS_ERR(tsi_eth_dev)) { 100 ret = PTR_ERR(tsi_eth_dev); 101 goto err; 102 } 103 104 mac_addr = of_get_mac_address(np); 105 if (!IS_ERR(mac_addr)) 106 ether_addr_copy(tsi_eth_data.mac_addr, mac_addr); 107 108 ph = of_get_property(np, "mdio-handle", NULL); 109 mdio = of_find_node_by_phandle(*ph); 110 ret = of_address_to_resource(mdio, 0, &res); 111 of_node_put(mdio); 112 if (ret) 113 goto unreg; 114 115 ph = of_get_property(np, "phy-handle", NULL); 116 phy = of_find_node_by_phandle(*ph); 117 118 if (phy == NULL) { 119 ret = -ENODEV; 120 goto unreg; 121 } 122 123 phy_id = of_get_property(phy, "reg", NULL); 124 125 tsi_eth_data.regs = r[0].start; 126 tsi_eth_data.phyregs = res.start; 127 tsi_eth_data.phy = *phy_id; 128 tsi_eth_data.irq_num = irq_of_parse_and_map(np, 0); 129 130 /* Some boards with the TSI108 bridge (e.g. Holly) 131 * have a miswiring of the ethernet PHYs which 132 * requires a workaround. The special 133 * "txc-rxc-delay-disable" property enables this 134 * workaround. FIXME: Need to port the tsi108_eth 135 * driver itself to phylib and use a non-misleading 136 * name for the workaround flag - it's not actually to 137 * do with the model of PHY in use */ 138 if (of_get_property(phy, "txc-rxc-delay-disable", NULL)) 139 tsi_eth_data.phy_type = TSI108_PHY_BCM54XX; 140 of_node_put(phy); 141 142 ret = 143 platform_device_add_data(tsi_eth_dev, &tsi_eth_data, 144 sizeof(hw_info)); 145 if (ret) 146 goto unreg; 147 } 148 return 0; 149 unreg: 150 platform_device_unregister(tsi_eth_dev); 151 err: 152 of_node_put(np); 153 return ret; 154 } 155 156 arch_initcall(tsi108_eth_of_init); 157