[PATCH 0/5] board: ti: am62x: Add support for 1-bit inline DDRSS ECC

[Georgi Vlaev]

Hi,

This series enables the 1-bit inline DDR ECC support in the
TI DDRSS bridge for AM62x. The base DDRSS ECC support was
merged for k3-ddrss in a previous series for AM64x [1].

The ECC data is stored together with the data, which will
reduce the total available memory with 1/9th. The k3-ddrss
driver enables the ECC support and primes the full memory
from the R5 SPL, so the the memory size changes must
propagate from the R5 SPL to A53 SPL and then to A53 u-boot.

The patches are similar to those we have for AM64x, with
one exception: "arm: mach-k3: common: Use ddr_init in
spl_enable_dcache". Since we've switched the boards to DT
to fetch the memory configuration, dram_init_banksize()
will no longer set the total memory size in the global data.
And spl_enable_dcache() uses dram_init_banksize() instead
of dram_init(), which actually sets the memory base/size.

Note this doesn't enable the 1-bit ECC on any platform by
default. This can be done by adding the "ti,ecc-enable"
property to the memorycontroller node in k3-am6*-ddr.dtsi.

[1] https://lore.kernel.org/u-boot/20220317170346.31162-1-d-gerlach@ti.com/

The patches depend on the base AM62 support, which was
recently merged in u-boot/next.

Georgi Vlaev (5):
  arm: mach-k3: common: Use ddr_init in spl_enable_dcache
  arm: dts: k3-am625-*: Mark memory with u-boot,dm-spl
  board: ti: am62x: Use fdt functions for ram and bank init
  board: ti: am62x: Account for DDR size fixups if ECC is enabled
  configs: am62x_evm_r5: Add CONFIG_NR_DRAM_BANKS as done in a53
    defconfig

 arch/arm/dts/k3-am625-r5-sk.dts      |  1 +
 arch/arm/dts/k3-am625-sk-u-boot.dtsi |  4 ++
 arch/arm/mach-k3/common.c            |  2 +-
 board/ti/am62x/evm.c                 | 62 ++++++++++++++++++++++++----
 configs/am62x_evm_r5_defconfig       |  1 +
 5 files changed, 61 insertions(+), 9 deletions(-)


base-commit: a87a6fcd20c0e29fe55bfbb6917c4aa1f1bbce74
-- 
2.30.2