diff options
Diffstat (limited to 'drivers/phy/marvell/comphy_a3700.c')
| -rw-r--r-- | drivers/phy/marvell/comphy_a3700.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/drivers/phy/marvell/comphy_a3700.c b/drivers/phy/marvell/comphy_a3700.c index 047c8bb0452..41043535554 100644 --- a/drivers/phy/marvell/comphy_a3700.c +++ b/drivers/phy/marvell/comphy_a3700.c @@ -11,6 +11,7 @@ #include <asm/arch/cpu.h> #include <asm/arch/soc.h> #include <linux/delay.h> +#include <phy.h> #include "comphy_a3700.h" @@ -982,6 +983,138 @@ void comphy_dedicated_phys_init(void) debug_exit(); } +static int find_available_node_by_compatible(int offset, const char *compatible) +{ + do { + offset = fdt_node_offset_by_compatible(gd->fdt_blob, offset, + compatible); + } while (offset > 0 && !fdtdec_get_is_enabled(gd->fdt_blob, offset)); + + return offset; +} + +static bool comphy_a3700_find_lane(const int nodes[3], int node, + int port, int *lane, int *invert) +{ + int res, i, j; + + for (i = 0; ; i++) { + struct fdtdec_phandle_args args; + + res = fdtdec_parse_phandle_with_args(gd->fdt_blob, node, "phys", + "#phy-cells", 0, i, &args); + if (res) + return false; + + for (j = 0; j < 3; j++) { + if (nodes[j] >= 0 && args.node == nodes[j] && + (args.args_count >= 1 ? args.args[0] : 0) == port) { + *lane = j; + *invert = args.args_count >= 2 ? args.args[1] + : 0; + return true; + } + } + } + + return false; +} + +static void comphy_a3700_fill_cfg(struct chip_serdes_phy_config *cfg, + const int nodes[3], const char *compatible, + int type) +{ + int node, lane, port, speed, invert; + + port = (type == COMPHY_TYPE_SGMII1) ? 1 : 0; + + node = -1; + while (1) { + node = find_available_node_by_compatible(node, compatible); + if (node < 0) + return; + + if (comphy_a3700_find_lane(nodes, node, port, &lane, &invert)) + break; + } + + if (cfg->comphy_map_data[lane].type != COMPHY_TYPE_UNCONNECTED) { + printf("Error: More PHYs defined for lane %d, skipping\n", + lane); + return; + } + + if (type == COMPHY_TYPE_SGMII0 || type == COMPHY_TYPE_SGMII1) { + const char *phy_mode; + + phy_mode = fdt_getprop(gd->fdt_blob, node, "phy-mode", NULL); + if (phy_mode && + !strcmp(phy_mode, + phy_string_for_interface(PHY_INTERFACE_MODE_2500BASEX))) + speed = COMPHY_SPEED_3_125G; + else + speed = COMPHY_SPEED_1_25G; + } else if (type == COMPHY_TYPE_SATA0) { + speed = COMPHY_SPEED_6G; + } else { + speed = COMPHY_SPEED_5G; + } + + cfg->comphy_map_data[lane].type = type; + cfg->comphy_map_data[lane].speed = speed; + cfg->comphy_map_data[lane].invert = invert; +} + +static const fdt32_t comphy_a3700_mux_lane_order[3] = { + __constant_cpu_to_be32(1), + __constant_cpu_to_be32(0), + __constant_cpu_to_be32(2), +}; + +int comphy_a3700_init_serdes_map(int node, struct chip_serdes_phy_config *cfg) +{ + int comphy_nodes[3]; + int child, i; + + for (i = 0; i < ARRAY_SIZE(comphy_nodes); i++) + comphy_nodes[i] = -FDT_ERR_NOTFOUND; + + fdt_for_each_subnode(child, gd->fdt_blob, node) { + if (!fdtdec_get_is_enabled(gd->fdt_blob, child)) + continue; + + i = fdtdec_get_int(gd->fdt_blob, child, "reg", -1); + if (i < 0 || i >= ARRAY_SIZE(comphy_nodes)) + continue; + + comphy_nodes[i] = child; + } + + for (i = 0; i < ARRAY_SIZE(comphy_nodes); i++) { + cfg->comphy_map_data[i].type = COMPHY_TYPE_UNCONNECTED; + cfg->comphy_map_data[i].speed = COMPHY_SPEED_INVALID; + } + + comphy_a3700_fill_cfg(cfg, comphy_nodes, "marvell,armada3700-u3d", + COMPHY_TYPE_USB3_DEVICE); + comphy_a3700_fill_cfg(cfg, comphy_nodes, "marvell,armada3700-xhci", + COMPHY_TYPE_USB3_HOST0); + comphy_a3700_fill_cfg(cfg, comphy_nodes, "marvell,armada-3700-pcie", + COMPHY_TYPE_PEX0); + comphy_a3700_fill_cfg(cfg, comphy_nodes, "marvell,armada-3700-ahci", + COMPHY_TYPE_SATA0); + comphy_a3700_fill_cfg(cfg, comphy_nodes, "marvell,armada-3700-neta", + COMPHY_TYPE_SGMII0); + comphy_a3700_fill_cfg(cfg, comphy_nodes, "marvell,armada-3700-neta", + COMPHY_TYPE_SGMII1); + + cfg->comphy_lanes_count = 3; + cfg->comphy_mux_bitcount = 4; + cfg->comphy_mux_lane_order = comphy_a3700_mux_lane_order; + + return 0; +} + int comphy_a3700_init(struct chip_serdes_phy_config *chip_cfg, struct comphy_map *serdes_map) { |