The X-Powers AXP20X and AXP22X PMICs can have a battery as power supply.

This patch adds the AXP20X/AXP22X battery driver to the MFD cells of the
AXP209, AXP221 and AXP223 MFD.

Signed-off-by: Quentin Schulz <quentin.sch...@free-electrons.com>
Acked-for-MFD-by: Lee Jones <lee.jo...@linaro.org>
Acked-by: Chen-Yu Tsai <w...@csie.org>
---

v2:
 - changed DT node name from battery_power_supply to
 battery-power-supply,
 - removed io-channels and io-channel-names from DT (the IIO mapping is
 done in the IIO ADC driver now),

 drivers/mfd/axp20x.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
index b2b6b16..3111b47 100644
--- a/drivers/mfd/axp20x.c
+++ b/drivers/mfd/axp20x.c
@@ -593,6 +593,9 @@ static struct mfd_cell axp20x_cells[] = {
        }, {
                .name           = "axp20x-adc",
        }, {
+               .name           = "axp20x-battery-power-supply",
+               .of_compatible  = "x-powers,axp209-battery-power-supply",
+       }, {
                .name           = "axp20x-ac-power-supply",
                .of_compatible  = "x-powers,axp202-ac-power-supply",
                .num_resources  = ARRAY_SIZE(axp20x_ac_power_supply_resources),
@@ -620,6 +623,9 @@ static struct mfd_cell axp221_cells[] = {
                .num_resources  = ARRAY_SIZE(axp20x_ac_power_supply_resources),
                .resources      = axp20x_ac_power_supply_resources,
        }, {
+               .name           = "axp20x-battery-power-supply",
+               .of_compatible  = "x-powers,axp221-battery-power-supply",
+       }, {
                .name           = "axp20x-usb-power-supply",
                .of_compatible  = "x-powers,axp221-usb-power-supply",
                .num_resources  = ARRAY_SIZE(axp22x_usb_power_supply_resources),
@@ -635,6 +641,9 @@ static struct mfd_cell axp223_cells[] = {
        }, {
                .name           = "axp22x-adc",
        }, {
+               .name           = "axp20x-battery-power-supply",
+               .of_compatible  = "x-powers,axp221-battery-power-supply",
+       }, {
                .name                   = "axp20x-regulator",
        }, {
                .name           = "axp20x-ac-power-supply",
-- 
2.9.3

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