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| author | Stefan Roese <sr@denx.de> | 2018-12-18 10:27:14 +0100 |
|---|---|---|
| committer | Daniel Schwierzeck <daniel.schwierzeck@gmail.com> | 2018-12-19 15:23:01 +0100 |
| commit | a5f50e0114f9fd39c16e416aad2aa292aaaaacd6 (patch) | |
| tree | 7ba124767db78f8fcf452ec21790ab848ada1a1d | |
| parent | 8da7495299230fb77d354ad507c5216f46d1dd37 (diff) | |
| download | u-boot-a5f50e0114f9fd39c16e416aad2aa292aaaaacd6.zip u-boot-a5f50e0114f9fd39c16e416aad2aa292aaaaacd6.tar.gz u-boot-a5f50e0114f9fd39c16e416aad2aa292aaaaacd6.tar.bz2 | |
mips: mt76xx: Flush d-cache in arch_misc_init() to solve d-cache issues
It has been noticed, that sometimes the d-cache is not in a
"clean-state" when U-Boot is running on MT7688. This was detected when
using the ethernet driver (which uses d-cache) and a TFTP command does
not complete. Flushing the complete d-cache (again?) here seems to fix
this issue.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
| -rw-r--r-- | arch/mips/Kconfig | 2 | ||||
| -rw-r--r-- | arch/mips/mach-mt7620/cpu.c | 14 |
2 files changed, 14 insertions, 2 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 1b1b1d7..355d3b4 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -79,7 +79,7 @@ config ARCH_MT7620 select DM_SERIAL imply DM_SPI imply DM_SPI_FLASH - select ARCH_MISC_INIT if WATCHDOG + select ARCH_MISC_INIT select MIPS_TUNE_24KC select OF_CONTROL select ROM_EXCEPTION_VECTORS diff --git a/arch/mips/mach-mt7620/cpu.c b/arch/mips/mach-mt7620/cpu.c index 87cc973..9e0ca71 100644 --- a/arch/mips/mach-mt7620/cpu.c +++ b/arch/mips/mach-mt7620/cpu.c @@ -89,9 +89,21 @@ void watchdog_reset(void) wdt_reset(watchdog_dev); } } +#endif int arch_misc_init(void) { + /* + * It has been noticed, that sometimes the d-cache is not in a + * "clean-state" when U-Boot is running on MT7688. This was + * detected when using the ethernet driver (which uses d-cache) + * and a TFTP command does not complete. Flushing the complete + * d-cache (again?) here seems to fix this issue. + */ + flush_dcache_range(gd->bd->bi_memstart, + gd->bd->bi_memstart + gd->ram_size - 1); + +#ifdef CONFIG_WATCHDOG /* Init watchdog */ if (uclass_get_device_by_seq(UCLASS_WDT, 0, &watchdog_dev)) { debug("Watchdog: Not found by seq!\n"); @@ -103,7 +115,7 @@ int arch_misc_init(void) wdt_start(watchdog_dev, 60000, 0); /* 60 seconds */ printf("Watchdog: Started\n"); +#endif return 0; } -#endif |