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arm: mxs: Provide Kconfig option to disable battery charging at IMX28 PMU
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>
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2 changed files with 11 additions and 0 deletions
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@ -756,6 +756,13 @@ static void mxs_batt_boot(void)
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setbits_le32(&power_regs->hw_power_5vctrl,
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POWER_5VCTRL_ILIMIT_EQ_ZERO);
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if (CONFIG_IS_ENABLED(MXS_PMU_DISABLE_BATT_CHARGE)) {
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writel(POWER_CHARGE_PWD_BATTCHRG,
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&power_regs->hw_power_charge_set);
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writel(POWER_5VCTRL_PWD_CHARGE_4P2_MASK,
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&power_regs->hw_power_5vctrl_set);
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}
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mxs_power_enable_4p2();
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}
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@ -59,6 +59,10 @@ config SPL_MXS_PMU_MINIMAL_VDD5V_CURRENT
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by the PMU is reduced to zero - the DCDC_BATT is used as
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the main power source for PMU.
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config SPL_MXS_PMU_DISABLE_BATT_CHARGE
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bool "Disable Battery Charging in MX28 PMU"
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default n
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source "board/freescale/mx28evk/Kconfig"
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source "board/liebherr/xea/Kconfig"
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