[PATCH v1 0/2] imx: mach: imx8: fdt: fix industrial GPU frequencies

[Stefan Eichenberger <eichest@gmail.com>]

On the industrial i.MX 8 variant, U-Boot limits the GPU clocks to
625 MHz by patching the device tree of the kernel. This series fixes two
issues with that code.

The first patch makes the helpers return the libfdt error codes, so
missing nodes are ignored again and real errors are printed with a
meaningful message. Before, booting a device tree without the GPU1
nodes printed a misleading error:

    Failed to set assigned-clock-rates for GPU1: FDT_ERR_BADPHANDLE

The second patch adds support for the GPU0 bus node name used by
mainline Linux and NXP downstream kernels starting with 6.18
(bus@53000000 instead of bus@53100000). Without it, GPU0 runs at the
default 700/850 MHz instead of the 625 MHz limit of the industrial SoC.

Stefan Eichenberger (2):
  imx: mach: imx8: fdt: return libfdt errors from helpers
  imx: mach: imx8: fdt: support newer GPU0 bus node name

 arch/arm/mach-imx/imx8/fdt.c | 35 +++++++++++++++--------------------
 1 file changed, 15 insertions(+), 20 deletions(-)

-- 
2.56.0