From 86e770b3e01f31ca8bf08ef60de4eaa842a35a50 Mon Sep 17 00:00:00 2001
From: Joao Paulo Goncalves <joao.goncalves@toradex.com>
Date: Thu, 8 Feb 2024 10:29:50 +0100
Subject: [PATCH] arm: mach-k3: am62: Get soc max temperature by grade
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AM62x SoC is available in multiple temperature grade:
- Commercial: 0° to 95° C
- Industrial: -40° to 105° C
- Automotive: -40° to 125° C
Add a new function that returns the am62 max temperature value
accordingly to its temperature grade in Celsius.
Signed-off-by: Joao Paulo Goncalves <joao.goncalves@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
---
arch/arm/mach-k3/include/mach/am62_hardware.h | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/arch/arm/mach-k3/include/mach/am62_hardware.h b/arch/arm/mach-k3/include/mach/am62_hardware.h
index 4cf7778a89..264f8a488b 100644
--- a/arch/arm/mach-k3/include/mach/am62_hardware.h
+++ b/arch/arm/mach-k3/include/mach/am62_hardware.h
@@ -42,6 +42,10 @@
#define JTAG_DEV_FEATURE_NO_PRU 0x4
+#define JTAG_DEV_TEMP_COMMERCIAL 0x3
+#define JTAG_DEV_TEMP_INDUSTRIAL 0x4
+#define JTAG_DEV_TEMP_AUTOMOTIVE 0x5
+
#define CTRLMMR_MAIN_DEVSTAT (WKUP_CTRL_MMR0_BASE + 0x30)
#define MAIN_DEVSTAT_PRIMARY_BOOTMODE_MASK GENMASK(6, 3)
#define MAIN_DEVSTAT_PRIMARY_BOOTMODE_SHIFT 3
@@ -105,6 +109,19 @@ static inline int k3_get_temp_grade(void)
return (full_devid & JTAG_DEV_TEMP_MASK) >> JTAG_DEV_TEMP_SHIFT;
}
+static inline int k3_get_max_temp(void)
+{
+ switch (k3_get_temp_grade()) {
+ case JTAG_DEV_TEMP_INDUSTRIAL:
+ return 105;
+ case JTAG_DEV_TEMP_AUTOMOTIVE:
+ return 125;
+ case JTAG_DEV_TEMP_COMMERCIAL:
+ default:
+ return 95;
+ }
+}
+
static inline int k3_has_pru(void)
{
u32 full_devid = readl(CTRLMMR_WKUP_JTAG_DEVICE_ID);
--
2.39.5