Am 23.05.19 um 07:55 schrieb Stefan Roese:
> With commit 06985289d452 ("watchdog: Implement generic watchdog_reset()
> version") the init sequence has changed in arch_misc_init(), resulting
> in a re-appearance of the d-cache issue on MT7688 boards (e.g. gardena).
> When this happens, the first (or sometimes later ones as well) TFTP
> command hangs and does not complete correctly. This leads to the
> assumption that the d-cache is not in a clean state once the ethernet
> driver is called (d-cache is used here for the buffers). The old work-
> around with the cache flush somehow does not work any more now with
> the new code change.
>
> To fix this issue, this patch now removes the old workaround and selects
> CONFIG_SYS_MALLOC_CLEAR_ON_INIT for ARCH_MTMIPS. With this option the
> complete malloc area is initialized with zeros (cache lines are touched).
> Testing has shown that this also fixes the issue on the MT7688 boards.
>
> Signed-off-by: Stefan Roese <s...@denx.de>
> Suggested-by: Daniel Schwierzeck <daniel.schwierz...@gmail.com>
> Cc: Daniel Schwierzeck <daniel.schwierz...@gmail.com>
> ---
> v2:
> - As suggested by Daniel, remove the workaround (hack) and select
> CONFIG_SYS_MALLOC_CLEAR_ON_INIT instead
>
> arch/mips/Kconfig | 2 +-
> arch/mips/mach-mtmips/cpu.c | 15 ---------------
> 2 files changed, 1 insertion(+), 16 deletions(-)
>
applied to u-boot-mips, thanks.
--
- Daniel
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