This adds support in X-Powers AXP20X and AXP22X battery driver for a
fixed battery in DT.
It will take the minimum supported voltage by the battery as defined in
the battery DT node and set the V_OFF register to this value, telling
the system to shut down if the supplied power is below this value.
Signed-off-by: Quentin Schulz <quentin.sch...@free-electrons.com>
---
drivers/power/supply/axp20x_battery.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/power/supply/axp20x_battery.c
b/drivers/power/supply/axp20x_battery.c
index 5d29b2eab8fc..66f530541735 100644
--- a/drivers/power/supply/axp20x_battery.c
+++ b/drivers/power/supply/axp20x_battery.c
@@ -433,6 +433,7 @@ static int axp20x_power_probe(struct platform_device *pdev)
{
struct axp20x_batt_ps *axp20x_batt;
struct power_supply_config psy_cfg = {};
+ struct power_supply_battery_info info;
if (!of_device_is_available(pdev->dev.of_node))
return -ENODEV;
@@ -484,6 +485,15 @@ static int axp20x_power_probe(struct platform_device *pdev)
return PTR_ERR(axp20x_batt->batt);
}
+ if (!power_supply_get_battery_info(axp20x_batt->batt, &info)) {
+ int vmin = info.voltage_min_design_uv;
+
+ if (vmin > 0 && axp20x_set_voltage_min_design(axp20x_batt,
+ vmin))
+ dev_err(&pdev->dev,
+ "couldn't set voltage_min_design\n");
+ }
+
return 0;
}
--
2.11.0
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