[PATCH 0/3] ti: add speed grades support for AM62a

[Anshul Dalal]

Hi all,

TI offers SoCs in various speed grades, each speed grade specifies a
certain maximum operating frequency of the clocks for each core.

In K3's boot flow, the R5 SPL starts the A53 or A72 core and configures
the correct clocks and power using the K3 ARM64 rproc driver
(compatible: ti,am654-rproc). However, the driver expects the dt node
for the ARM64 core to be set with a correct "assigned-clock-rates"
value.

Currently the dt has a value of 1.2GHz for the A53 core on AM62a, this
is incorrect for lower speed grades. Therefore this patch set adds
support for fixing this value at runtime based on the detected speed
grade from the efuse MMR.

For the speed grade table, refer to Table 6-1 of the AM62a datasheet[1].

[1]: https://www.ti.com/lit/ds/symlink/am62a7.pdf

Signed-off-by: Anshul Dalal <anshuld at ti.com>
---
Anshul Dalal (3):
      mach-k3: am62px: remove fdt_fixup_cpu_freq_nodes_am62p
      mach-k3: refactor A53 speed grade clock-rate fixup
      mach-k3: am62a: add support for speed grades

 arch/arm/mach-k3/am62ax/am62a7_init.c          |  39 +++++++++
 arch/arm/mach-k3/am62px/am62p5_fdt.c           |  12 ---
 arch/arm/mach-k3/am62px/am62p5_init.c          |  87 ++++++--------------
 arch/arm/mach-k3/am62x/am625_init.c            |  84 ++++++-------------
 arch/arm/mach-k3/common.c                      | 108 +++++++++++++++++++++++++
 arch/arm/mach-k3/common.h                      |  11 ++-
 arch/arm/mach-k3/include/mach/am62_hardware.h  |  24 ------
 arch/arm/mach-k3/include/mach/am62a_hardware.h |   4 +
 arch/arm/mach-k3/include/mach/am62p_hardware.h |  17 ----
 9 files changed, 208 insertions(+), 178 deletions(-)
---
base-commit: e34d01d23e45e007368685ffa6dfd674b6dd7b17
change-id: 20251029-ti_speed_grade_fix-e7f3f6806878

Best regards,
-- 
Anshul Dalal <anshuld at ti.com>