This new Kconfig option allows disabling the in-PMU battery charging block. This may be required when DCDC_BAT source is powered not from battery, but from already regulated, good quality source.
Signed-off-by: Lukasz Majewski lukma@denx.de --- arch/arm/cpu/arm926ejs/mxs/spl_power_init.c | 7 +++++++ arch/arm/mach-imx/mxs/Kconfig | 4 ++++ 2 files changed, 11 insertions(+)
diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c index 9965810ac2..7c584db27c 100644 --- a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c +++ b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c @@ -756,6 +756,13 @@ static void mxs_batt_boot(void) setbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_ILIMIT_EQ_ZERO);
+ if (CONFIG_IS_ENABLED(MXS_PMU_DISABLE_BATT_CHARGE)) { + writel(POWER_CHARGE_PWD_BATTCHRG, + &power_regs->hw_power_charge_set); + writel(POWER_5VCTRL_PWD_CHARGE_4P2_MASK, + &power_regs->hw_power_5vctrl_set); + } + mxs_power_enable_4p2(); }
diff --git a/arch/arm/mach-imx/mxs/Kconfig b/arch/arm/mach-imx/mxs/Kconfig index 3232b0fb67..f5e45ae846 100644 --- a/arch/arm/mach-imx/mxs/Kconfig +++ b/arch/arm/mach-imx/mxs/Kconfig @@ -59,6 +59,10 @@ config SPL_MXS_PMU_MINIMAL_VDD5V_CURRENT by the PMU is reduced to zero - the DCDC_BATT is used as the main power source for PMU.
+config SPL_MXS_PMU_DISABLE_BATT_CHARGE + bool "Disable Battery Charging in MX28 PMU" + default n + source "board/freescale/mx28evk/Kconfig" source "board/liebherr/xea/Kconfig"