There is the requirement on the chassis's backplane that when the clocks have been enabled, they then should not disappear.
Resetting the Zarlink clocking chips at unit reset violates this requirement because the backplane clocks are not supplied during the reset time.
To avoid this side effect, both the Zarlink clocking chips are reset only at power up.
Signed-off-by: Valentin Longchamp valentin.longchamp@keymile.com
---
Changes in v2: - Improve the commit message for more clarity
board/keymile/kmp204x/kmp204x.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/board/keymile/kmp204x/kmp204x.c b/board/keymile/kmp204x/kmp204x.c index 6bc8eb8..638b2a3 100644 --- a/board/keymile/kmp204x/kmp204x.c +++ b/board/keymile/kmp204x/kmp204x.c @@ -94,7 +94,7 @@ int board_early_init_f(void) qrio_wdmask(BFTIC4_RST, true);
/* set the ZL30138's prstcfg to reset at power-up and unit reset only */ - qrio_prstcfg(ZL30158_RST, PRSTCFG_POWUP_UNIT_RST); + qrio_prstcfg(ZL30158_RST, PRSTCFG_POWUP_RST); /* and take it out of reset as soon as possible (needed for Hooper) */ qrio_prst(ZL30158_RST, false, false);
@@ -144,7 +144,7 @@ int misc_init_f(void) qrio_prst(ETH_FRONT_PHY_RST, false, false);
/* set the ZL30343 prstcfg to reset at power-up and unit reset only */ - qrio_prstcfg(ZL30343_RST, PRSTCFG_POWUP_UNIT_RST); + qrio_prstcfg(ZL30343_RST, PRSTCFG_POWUP_RST); /* and enable the WD on it */ qrio_wdmask(ZL30343_RST, true);