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arm: mach-k3: am62p: Fixup thermal zone critical points

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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>
This commit is contained in:
Aparna Patra
2025-01-08 10:19:37 +05:30
committed by Tom Rini
parent e44098d1aa
commit a226a6422c
2 changed files with 54 additions and 0 deletions
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37
arch/arm/mach-k3/am62px/am62p5_fdt.c
View File

@@ -38,11 +38,48 @@ static void fdt_fixup_canfd_nodes_am62p(void *blob, bool has_canfd)
}
}
static int fdt_fixup_trips_node(void *blob, int zoneoffset, int maxc)
{
int node, trip;
node = fdt_subnode_offset(blob, zoneoffset, "trips");
if (node < 0)
return -1;
fdt_for_each_subnode(trip, blob, node) {
const char *type = fdt_getprop(blob, trip, "type", NULL);
if (!type || (strncmp(type, "critical", 8) != 0))
continue;
if (fdt_setprop_u32(blob, trip, "temperature", 1000 * maxc) < 0)
return -1;
}
return 0;
}
static void fdt_fixup_thermal_zone_nodes_am62p(void *blob, int maxc)
{
int node, zone;
node = fdt_path_offset(blob, "/thermal-zones");
if (node < 0)
return;
fdt_for_each_subnode(zone, blob, node) {
if (fdt_fixup_trips_node(blob, zone, maxc) < 0)
printf("Failed to set temperature in %s critical trips\n",
fdt_get_name(blob, zone, NULL));
}
}
int ft_system_setup(void *blob, struct bd_info *bd)
{
fdt_fixup_cores_wdt_nodes_am62p(blob, k3_get_core_nr());
fdt_fixup_video_codec_nodes_am62p(blob, k3_has_video_codec());
fdt_fixup_canfd_nodes_am62p(blob, k3_has_canfd());
fdt_fixup_thermal_zone_nodes_am62p(blob, k3_get_max_temp());
fdt_fixup_reserved(blob, "tfa", CONFIG_K3_ATF_LOAD_ADDR, 0x80000);
fdt_fixup_reserved(blob, "optee", CONFIG_K3_OPTEE_LOAD_ADDR, 0x1800000);

17
arch/arm/mach-k3/include/mach/am62p_hardware.h
View File

@@ -26,6 +26,12 @@
#define JTAG_DEV_CANFD_SHIFT 15
#define JTAG_DEV_VIDEO_CODEC_MASK BIT(14)
#define JTAG_DEV_VIDEO_CODEC_SHIFT 14
#define JTAG_DEV_TEMP_MASK GENMASK(5, 3)
#define JTAG_DEV_TEMP_SHIFT 3
#define JTAG_DEV_TEMP_AUTOMOTIVE 0x5
#define JTAG_DEV_TEMP_EXTENDED_VALUE 105
#define JTAG_DEV_TEMP_AUTOMOTIVE_VALUE 125
#define CTRLMMR_MAIN_DEVSTAT (WKUP_CTRL_MMR0_BASE + 0x30)
#define MAIN_DEVSTAT_PRIMARY_BOOTMODE_MASK GENMASK(6, 3)
@@ -101,6 +107,17 @@ static inline int k3_has_canfd(void)
return (dev_id & JTAG_DEV_CANFD_MASK) >> JTAG_DEV_CANFD_SHIFT;
}
static inline int k3_get_max_temp(void)
{
u32 dev_id = readl(CTRLMMR_WKUP_JTAG_DEVICE_ID);
u32 dev_temp = (dev_id & JTAG_DEV_TEMP_MASK) >> JTAG_DEV_TEMP_SHIFT;
if (dev_temp == JTAG_DEV_TEMP_AUTOMOTIVE)
return JTAG_DEV_TEMP_AUTOMOTIVE_VALUE;
else
return JTAG_DEV_TEMP_EXTENDED_VALUE;
}
#if defined(CONFIG_SYS_K3_SPL_ATF) && !defined(__ASSEMBLY__)
static const u32 put_device_ids[] = {};