mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-06 05:04:26 +00:00
136 lines
3.4 KiB
C
136 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2015-2016 Marvell International Ltd.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <log.h>
|
|
#include <asm/io.h>
|
|
|
|
#include "comphy_core.h"
|
|
#include "comphy_hpipe.h"
|
|
|
|
/*
|
|
* comphy_mux_check_config()
|
|
* description: this function passes over the COMPHY lanes and check if the type
|
|
* is valid for specific lane. If the type is not valid,
|
|
* the function update the struct and set the type of the lane as
|
|
* PHY_TYPE_UNCONNECTED
|
|
*/
|
|
static void comphy_mux_check_config(struct comphy_mux_data *mux_data,
|
|
struct comphy_map *comphy_map_data, int comphy_max_lanes)
|
|
{
|
|
struct comphy_mux_options *mux_opt;
|
|
int lane, opt, valid;
|
|
|
|
debug_enter();
|
|
|
|
for (lane = 0; lane < comphy_max_lanes;
|
|
lane++, comphy_map_data++, mux_data++) {
|
|
/* Don't check ignored COMPHYs */
|
|
if (comphy_map_data->type == PHY_TYPE_IGNORE)
|
|
continue;
|
|
|
|
mux_opt = mux_data->mux_values;
|
|
for (opt = 0, valid = 0; opt < mux_data->max_lane_values;
|
|
opt++, mux_opt++) {
|
|
if (mux_opt->type == comphy_map_data->type) {
|
|
valid = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (valid == 0) {
|
|
debug("lane number %d, had invalid type %d\n",
|
|
lane, comphy_map_data->type);
|
|
debug("set lane %d as type %d\n", lane,
|
|
PHY_TYPE_UNCONNECTED);
|
|
comphy_map_data->type = PHY_TYPE_UNCONNECTED;
|
|
} else {
|
|
debug("lane number %d, has type %d\n",
|
|
lane, comphy_map_data->type);
|
|
}
|
|
}
|
|
|
|
debug_exit();
|
|
}
|
|
|
|
static u32 comphy_mux_get_mux_value(struct comphy_mux_data *mux_data,
|
|
u32 type, int lane)
|
|
{
|
|
struct comphy_mux_options *mux_opt;
|
|
int opt;
|
|
u32 value = 0;
|
|
|
|
debug_enter();
|
|
|
|
mux_opt = mux_data->mux_values;
|
|
for (opt = 0 ; opt < mux_data->max_lane_values; opt++, mux_opt++) {
|
|
if (mux_opt->type == type) {
|
|
value = mux_opt->mux_value;
|
|
break;
|
|
}
|
|
}
|
|
|
|
debug_exit();
|
|
|
|
return value;
|
|
}
|
|
|
|
static void comphy_mux_reg_write(struct comphy_mux_data *mux_data,
|
|
struct comphy_map *comphy_map_data,
|
|
int comphy_max_lanes,
|
|
void __iomem *selector_base,
|
|
const fdt32_t *mux_lane_order, u32 bitcount)
|
|
{
|
|
u32 lane, value, offset, mask;
|
|
|
|
debug_enter();
|
|
|
|
for (lane = 0; lane < comphy_max_lanes;
|
|
lane++, comphy_map_data++, mux_data++) {
|
|
if (comphy_map_data->type == PHY_TYPE_IGNORE)
|
|
continue;
|
|
|
|
/*
|
|
* if the order of nodes in selector base register is
|
|
* nontrivial, use mapping from mux_lane_order
|
|
*/
|
|
if (mux_lane_order)
|
|
offset = fdt32_to_cpu(mux_lane_order[lane]) * bitcount;
|
|
else
|
|
offset = lane * bitcount;
|
|
|
|
mask = (((1 << bitcount) - 1) << offset);
|
|
value = (comphy_mux_get_mux_value(mux_data,
|
|
comphy_map_data->type,
|
|
lane) << offset);
|
|
reg_set(selector_base, value, mask);
|
|
}
|
|
|
|
debug_exit();
|
|
}
|
|
|
|
void comphy_mux_init(struct chip_serdes_phy_config *chip_cfg,
|
|
struct comphy_map *comphy_map_data,
|
|
void __iomem *selector_base)
|
|
{
|
|
struct comphy_mux_data *mux_data;
|
|
const fdt32_t *mux_lane_order;
|
|
u32 mux_bitcount;
|
|
u32 comphy_max_lanes;
|
|
|
|
debug_enter();
|
|
|
|
comphy_max_lanes = chip_cfg->comphy_lanes_count;
|
|
mux_data = chip_cfg->mux_data;
|
|
mux_lane_order = chip_cfg->comphy_mux_lane_order;
|
|
mux_bitcount = chip_cfg->comphy_mux_bitcount;
|
|
|
|
/* check if the configuration is valid */
|
|
comphy_mux_check_config(mux_data, comphy_map_data, comphy_max_lanes);
|
|
/* Init COMPHY selectors */
|
|
comphy_mux_reg_write(mux_data, comphy_map_data, comphy_max_lanes,
|
|
selector_base, mux_lane_order, mux_bitcount);
|
|
|
|
debug_exit();
|
|
}
|