mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-05 10:46:15 +09:00
6ecc0b1cdf
This type tells u-boot to preserve the COMPHY settings as is it is usefull in situations where the COMPHY was initialized by earlier firmware. Note that IGNORE is different from UNCONNECTED since setting UNCONNECTED type will disconnect the COMPHY in the COMPHY MUX which is a desired behaviour Signed-off-by: Yehuda Yitschak <yehuday@marvell.com> Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Igal Liberman <igall@marvell.com> Reviewed-by: Stefan Roese <sr@denx.de>
126 lines
3.0 KiB
C
126 lines
3.0 KiB
C
/*
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* Copyright (C) 2015-2016 Marvell International Ltd.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <asm/io.h>
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#include "comphy.h"
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#include "comphy_hpipe.h"
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/*
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* comphy_mux_check_config()
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* description: this function passes over the COMPHY lanes and check if the type
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* is valid for specific lane. If the type is not valid,
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* the function update the struct and set the type of the lane as
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* PHY_TYPE_UNCONNECTED
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*/
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static void comphy_mux_check_config(struct comphy_mux_data *mux_data,
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struct comphy_map *comphy_map_data, int comphy_max_lanes)
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{
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struct comphy_mux_options *mux_opt;
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int lane, opt, valid;
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debug_enter();
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for (lane = 0; lane < comphy_max_lanes;
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lane++, comphy_map_data++, mux_data++) {
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/* Don't check ignored COMPHYs */
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if (comphy_map_data->type == PHY_TYPE_IGNORE)
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continue;
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mux_opt = mux_data->mux_values;
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for (opt = 0, valid = 0; opt < mux_data->max_lane_values;
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opt++, mux_opt++) {
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if (mux_opt->type == comphy_map_data->type) {
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valid = 1;
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break;
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}
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}
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if (valid == 0) {
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debug("lane number %d, had invalid type %d\n",
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lane, comphy_map_data->type);
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debug("set lane %d as type %d\n", lane,
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PHY_TYPE_UNCONNECTED);
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comphy_map_data->type = PHY_TYPE_UNCONNECTED;
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} else {
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debug("lane number %d, has type %d\n",
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lane, comphy_map_data->type);
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}
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}
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debug_exit();
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}
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static u32 comphy_mux_get_mux_value(struct comphy_mux_data *mux_data,
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u32 type, int lane)
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{
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struct comphy_mux_options *mux_opt;
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int opt;
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u32 value = 0;
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debug_enter();
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mux_opt = mux_data->mux_values;
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for (opt = 0 ; opt < mux_data->max_lane_values; opt++, mux_opt++) {
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if (mux_opt->type == type) {
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value = mux_opt->mux_value;
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break;
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}
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}
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debug_exit();
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return value;
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}
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static void comphy_mux_reg_write(struct comphy_mux_data *mux_data,
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struct comphy_map *comphy_map_data,
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int comphy_max_lanes,
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void __iomem *selector_base, u32 bitcount)
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{
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u32 lane, value, offset, mask;
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debug_enter();
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for (lane = 0; lane < comphy_max_lanes;
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lane++, comphy_map_data++, mux_data++) {
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if (comphy_map_data->type == PHY_TYPE_IGNORE)
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continue;
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offset = lane * bitcount;
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mask = (((1 << bitcount) - 1) << offset);
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value = (comphy_mux_get_mux_value(mux_data,
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comphy_map_data->type,
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lane) << offset);
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reg_set(selector_base, value, mask);
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}
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debug_exit();
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}
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void comphy_mux_init(struct chip_serdes_phy_config *chip_cfg,
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struct comphy_map *comphy_map_data,
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void __iomem *selector_base)
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{
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struct comphy_mux_data *mux_data;
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u32 mux_bitcount;
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u32 comphy_max_lanes;
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debug_enter();
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comphy_max_lanes = chip_cfg->comphy_lanes_count;
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mux_data = chip_cfg->mux_data;
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mux_bitcount = chip_cfg->comphy_mux_bitcount;
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/* check if the configuration is valid */
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comphy_mux_check_config(mux_data, comphy_map_data, comphy_max_lanes);
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/* Init COMPHY selectors */
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comphy_mux_reg_write(mux_data, comphy_map_data, comphy_max_lanes,
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selector_base, mux_bitcount);
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debug_exit();
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}
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