a226a6422c
Read the max temperature for the SoC temperature grade from the hardware and modify the critical trip nodes on each thermal zone of FDT at runtime so they are correct with the hardware value for its grade. Signed-off-by: Aparna Patra <a-patra@ti.com> Reviewed-by: Bryan Brattlof <bb@ti.com>
88 lines
2.3 KiB
C
88 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2024 Texas Instruments Incorporated - https://www.ti.com/
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*/
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#include <asm/hardware.h>
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#include "../common_fdt.h"
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#include <fdt_support.h>
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static void fdt_fixup_cores_wdt_nodes_am62p(void *blob, int core_nr)
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{
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char node_path[32];
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if (core_nr < 1)
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return;
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for (; core_nr < 4; core_nr++) {
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snprintf(node_path, sizeof(node_path), "/cpus/cpu@%d", core_nr);
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fdt_del_node_path(blob, node_path);
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snprintf(node_path, sizeof(node_path), "/cpus/cpu-map/cluster0/core%d", core_nr);
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fdt_del_node_path(blob, node_path);
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snprintf(node_path, sizeof(node_path), "/bus@f0000/watchdog@e0%d0000", core_nr);
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fdt_del_node_path(blob, node_path);
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}
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}
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static void fdt_fixup_video_codec_nodes_am62p(void *blob, bool has_video_codec)
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{
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if (!has_video_codec)
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fdt_del_node_path(blob, "/bus@f0000/video-codec@30210000");
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}
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static void fdt_fixup_canfd_nodes_am62p(void *blob, bool has_canfd)
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{
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if (!has_canfd) {
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fdt_del_node_path(blob, "/bus@f0000/can@20701000");
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fdt_del_node_path(blob, "/bus@f0000/can@20711000");
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}
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}
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static int fdt_fixup_trips_node(void *blob, int zoneoffset, int maxc)
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{
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int node, trip;
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node = fdt_subnode_offset(blob, zoneoffset, "trips");
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if (node < 0)
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return -1;
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fdt_for_each_subnode(trip, blob, node) {
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const char *type = fdt_getprop(blob, trip, "type", NULL);
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if (!type || (strncmp(type, "critical", 8) != 0))
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continue;
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if (fdt_setprop_u32(blob, trip, "temperature", 1000 * maxc) < 0)
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return -1;
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}
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return 0;
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}
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static void fdt_fixup_thermal_zone_nodes_am62p(void *blob, int maxc)
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{
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int node, zone;
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node = fdt_path_offset(blob, "/thermal-zones");
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if (node < 0)
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return;
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fdt_for_each_subnode(zone, blob, node) {
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if (fdt_fixup_trips_node(blob, zone, maxc) < 0)
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printf("Failed to set temperature in %s critical trips\n",
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fdt_get_name(blob, zone, NULL));
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}
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}
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int ft_system_setup(void *blob, struct bd_info *bd)
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{
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fdt_fixup_cores_wdt_nodes_am62p(blob, k3_get_core_nr());
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fdt_fixup_video_codec_nodes_am62p(blob, k3_has_video_codec());
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fdt_fixup_canfd_nodes_am62p(blob, k3_has_canfd());
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fdt_fixup_thermal_zone_nodes_am62p(blob, k3_get_max_temp());
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fdt_fixup_reserved(blob, "tfa", CONFIG_K3_ATF_LOAD_ADDR, 0x80000);
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fdt_fixup_reserved(blob, "optee", CONFIG_K3_OPTEE_LOAD_ADDR, 0x1800000);
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return 0;
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}
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