From: Valentin Longchamp Date: Tue, 19 Aug 2014 13:40:04 +0000 (+0200) Subject: kmp204x: reset the Zarlink clocking chips at power up only X-Git-Tag: v2014.10-rc2~119^2 X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=f38391793f1a5c62d1c72a647f15a88e7c22ef11;p=u-boot 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 --- 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);