From f38391793f1a5c62d1c72a647f15a88e7c22ef11 Mon Sep 17 00:00:00 2001 From: Valentin Longchamp <valentin.longchamp@keymile.com> Date: Tue, 19 Aug 2014 15:40:04 +0200 Subject: [PATCH] kmp204x: reset the Zarlink clocking chips at power up only 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> --- board/keymile/kmp204x/kmp204x.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/board/keymile/kmp204x/kmp204x.c b/board/keymile/kmp204x/kmp204x.c index cd083795b8..4a736137e3 100644 --- a/board/keymile/kmp204x/kmp204x.c +++ b/board/keymile/kmp204x/kmp204x.c @@ -108,8 +108,8 @@ int board_early_init_f(void) /* and enable WD on it */ 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); + /* set the ZL30138's prstcfg to reset at power-up only */ + 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); @@ -158,8 +158,8 @@ int misc_init_f(void) qrio_prstcfg(ETH_FRONT_PHY_RST, PRSTCFG_POWUP_UNIT_CORE_RST); 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); + /* set the ZL30343 prstcfg to reset at power-up only */ + qrio_prstcfg(ZL30343_RST, PRSTCFG_POWUP_RST); /* and enable the WD on it */ qrio_wdmask(ZL30343_RST, true); -- 2.39.5