diff options
Diffstat (limited to 'arch/arm/cpu/arm926ejs/mxs/spl_lradc_init.c')
| -rw-r--r-- | arch/arm/cpu/arm926ejs/mxs/spl_lradc_init.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_lradc_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_lradc_init.c index cdfcddd824..96bd32f8ad 100644 --- 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, ®s->hw_lradc_ctrl0_clr); writel(LRADC_CTRL0_CLKGATE, ®s->hw_lradc_ctrl0_clr); writel(LRADC_CTRL0_ONCHIP_GROUNDREF, ®s->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(®s->hw_lradc_status) & LRADC_STATUS_CHANNEL7_PRESENT)) + if (!(readl(®s->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, ®s->hw_lradc_ctrl1_clr); writel(LRADC_CTRL1_LRADC7_IRQ, ®s->hw_lradc_ctrl1_clr); @@ -65,6 +73,7 @@ void mxs_lradc_enable_batt_measurement(void) 100, ®s->hw_lradc_delay3); writel(0xffffffff, ®s->hw_lradc_ch7_clr); - writel(LRADC_DELAY_KICK, ®s->hw_lradc_delay3_set); + + debug("SPL: LRADC channel 7 configuration complete\n"); } |