diff options
| author | Finn Thain <fthain@telegraphics.com.au> | 2021-03-30 18:37:51 +1100 |
|---|---|---|
| committer | Geert Uytterhoeven <geert@linux-m68k.org> | 2021-04-06 09:33:20 +0200 |
| commit | 43262178c043032e7c42d00de44c818ba05f9967 (patch) | |
| tree | 00c07114e812d3bb05c41ceacfe3ac43e3306e08 /arch/m68k/include/asm/mvme147hw.h | |
| parent | cbfa72b57747f8b87df16396d85e832c8bf03811 (diff) | |
| download | linux-43262178c043032e7c42d00de44c818ba05f9967.tar.gz | |
m68k: mvme147,mvme16x: Don't wipe PCC timer config bits
Don't clear the timer 1 configuration bits when clearing the interrupt flag
and counter overflow. As Michael reported, "This results in no timer
interrupts being delivered after the first. Initialization then hangs
in calibrate_delay as the jiffies counter is not updated."
On mvme16x, enable the timer after requesting the irq, consistent with
mvme147.
Cc: Michael Pavone <pavone@retrodev.com>
Fixes: 7529b90d051e ("m68k: mvme147: Handle timer counter overflow")
Fixes: 19999a8b8782 ("m68k: mvme16x: Handle timer counter overflow")
Reported-and-tested-by: Michael Pavone <pavone@retrodev.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Link: https://lore.kernel.org/r/4fdaa113db089b8fb607f7dd818479f8cdcc4547.1617089871.git.fthain@telegraphics.com.au
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Diffstat (limited to 'arch/m68k/include/asm/mvme147hw.h')
| -rw-r--r-- | arch/m68k/include/asm/mvme147hw.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/mvme147hw.h b/arch/m68k/include/asm/mvme147hw.h index 257b29184af9..e28eb1c0e0bf 100644 --- a/arch/m68k/include/asm/mvme147hw.h +++ b/arch/m68k/include/asm/mvme147hw.h @@ -66,6 +66,9 @@ struct pcc_regs { #define PCC_INT_ENAB 0x08 #define PCC_TIMER_INT_CLR 0x80 + +#define PCC_TIMER_TIC_EN 0x01 +#define PCC_TIMER_COC_EN 0x02 #define PCC_TIMER_CLR_OVF 0x04 #define PCC_LEVEL_ABORT 0x07 |