[PATCH 5/7] pinctrl: rockchip: add support for bias-pull-pin-default

[Ahmad Fatoum]

The older rk3128, rk3036 and rk3066a SoCs only supported a
pin-function-specific default bias as well as disabling bias with no way
to manually choose whether the bias should be a pull-up or a pull-down.

We wrongly treated this as if there is no bias, so let's fix that.

Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
---
 drivers/pinctrl/pinctrl-rockchip.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index 4177071f26ff..8e1e868fa78f 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -236,6 +236,8 @@ static enum pin_config_param parse_bias_config(struct device_node *np)
 		return PIN_CONFIG_BIAS_PULL_DOWN;
 	else if (of_property_read_bool(np, "bias-bus-hold"))
 		return PIN_CONFIG_BIAS_BUS_HOLD;
+	else if (of_property_read_bool(np, "bias-pull-pin-default"))
+		return PIN_CONFIG_BIAS_PULL_PIN_DEFAULT;
 	else
 		return PIN_CONFIG_BIAS_DISABLE;
 }
-- 
2.39.2