Merge branch 'rmobile' of git://git.denx.de/u-boot-sh

[oweals/u-boot.git] / arch / arm / cpu / arm926ejs / mxs / spl_lradc_init.c

diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_lradc_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_lradc_init.c
index cdfcddd824ff4d42c02d89193a449f22c9ee6196..96bd32f8adac9106584dcdb04d7ac251ed8368a0 100644 (file)
--- a/arch/arm/cpu/arm926ejs/mxs/spl_lradc_init.c
+++ b/arch/arm/cpu/arm926ejs/mxs/spl_lradc_init.c
@@ -18,6 +18,8 @@ void mxs_lradc_init(void)
 {
        struct mxs_lradc_regs *regs = (struct mxs_lradc_regs *)MXS_LRADC_BASE;
 
+       debug("SPL: Initialisating LRADC\n");
+
        writel(LRADC_CTRL0_SFTRST, &regs->hw_lradc_ctrl0_clr);
        writel(LRADC_CTRL0_CLKGATE, &regs->hw_lradc_ctrl0_clr);
        writel(LRADC_CTRL0_ONCHIP_GROUNDREF, &regs->hw_lradc_ctrl0_clr);
@@ -37,9 +39,15 @@ void mxs_lradc_enable_batt_measurement(void)
 {
        struct mxs_lradc_regs *regs = (struct mxs_lradc_regs *)MXS_LRADC_BASE;
 
+       debug("SPL: Enabling LRADC battery measurement\n");
+
        /* Check if the channel is present at all. */
-       if (!(readl(&regs->hw_lradc_status) & LRADC_STATUS_CHANNEL7_PRESENT))
+       if (!(readl(&regs->hw_lradc_status) & LRADC_STATUS_CHANNEL7_PRESENT)) {
+               debug("SPL: LRADC channel 7 is not present - aborting\n");
                return;
+       }
+
+       debug("SPL: LRADC channel 7 is present - configuring\n");
 
        writel(LRADC_CTRL1_LRADC7_IRQ_EN, &regs->hw_lradc_ctrl1_clr);
        writel(LRADC_CTRL1_LRADC7_IRQ, &regs->hw_lradc_ctrl1_clr);
@@ -65,6 +73,7 @@ void mxs_lradc_enable_batt_measurement(void)
                100, &regs->hw_lradc_delay3);
 
        writel(0xffffffff, &regs->hw_lradc_ch7_clr);
-
        writel(LRADC_DELAY_KICK, &regs->hw_lradc_delay3_set);
+
+       debug("SPL: LRADC channel 7 configuration complete\n");
 }