From: Stefan Wahren Date: Thu, 21 May 2015 11:20:17 +0000 (+0000) Subject: mxs: Do not disable bo detection when DC-DC is already enabled X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=7bbc5ff732bcf8d2aa935249ce4b7c28a701ca51;p=project%2Fbcm63xx%2Fu-boot.git mxs: Do not disable bo detection when DC-DC is already enabled In case the DC-DC is already enabled mxs_enable_4p2_dcdc_input() returns without reenabling brown out detection. So fix this issue by moving the return before brown out deactivation. Signed-off-by: Stefan Wahren Reviewed-by: Marek Vasut --- diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c index c342217fa9..42f3df2ac2 100644 --- a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c +++ b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c @@ -332,6 +332,11 @@ static void mxs_enable_4p2_dcdc_input(int xfer) debug("SPL: %s 4P2 DC-DC Input\n", xfer ? "Enabling" : "Disabling"); + if (xfer && (readl(&power_regs->hw_power_5vctrl) & + POWER_5VCTRL_ENABLE_DCDC)) { + return; + } + prev_5v_brnout = readl(&power_regs->hw_power_5vctrl) & POWER_5VCTRL_PWDN_5VBRNOUT; prev_5v_droop = readl(&power_regs->hw_power_ctrl) & @@ -343,11 +348,6 @@ static void mxs_enable_4p2_dcdc_input(int xfer) clrbits_le32(&power_regs->hw_power_ctrl, POWER_CTRL_ENIRQ_VDD5V_DROOP); - if (xfer && (readl(&power_regs->hw_power_5vctrl) & - POWER_5VCTRL_ENABLE_DCDC)) { - return; - } - /* * Recording orignal values that will be modified temporarlily * to handle a chip bug. See chip errata for CQ ENGR00115837