This patch adds initial pin configuration using pinctrl subsystem
to reduce leakage power-consumption of gpio pins in normal state.
All pins included in this patch are NC (not connected) pin.
Cc: Kukjin Kim <kgene.kim@xxxxxxxxxxx>
Cc: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
---
arch/arm/boot/dts/exynos3250-pinctrl.dtsi | 38 +++++++++++++++++
arch/arm/boot/dts/exynos3250-rinato.dts | 71 ++++++++++++++++++++++++++++++-
2 files changed, 107 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/exynos3250-pinctrl.dtsi b/arch/arm/boot/dts/exynos3250-pinctrl.dtsi
index 5ab81c39e2c9..ecf79386e891 100644
--- a/arch/arm/boot/dts/exynos3250-pinctrl.dtsi
+++ b/arch/arm/boot/dts/exynos3250-pinctrl.dtsi
@@ -16,11 +16,49 @@
#define PIN_PULL_DOWN 1
#define PIN_PULL_UP 3
+#define PIN_DRV_LV1 0
+#define PIN_DRV_LV2 2
+#define PIN_DRV_LV3 1
+#define PIN_DRV_LV4 3
+
#define PIN_PDN_OUT0 0
#define PIN_PDN_OUT1 1
#define PIN_PDN_INPUT 2
#define PIN_PDN_PREV 3
+#define PIN_IN(_pin, _pull, _drv) \
+ _pin { \
+ samsung,pins = #_pin; \
+ samsung,pin-function = <0>; \
+ samsung,pin-pud = <PIN_PULL_ ##_pull>; \
+ samsung,pin-drv = <PIN_DRV_ ##_drv>; \
+ }
+
+#define PIN_OUT(_pin, _drv) \
+ _pin { \
+ samsung,pins = #_pin; \
+ samsung,pin-function = <1>; \
+ samsung,pin-pud = <0>; \
+ samsung,pin-drv = <PIN_DRV_ ##_drv>; \
+ }
+
+#define PIN_OUT_SET(_pin, _val, _drv) \
+ _pin { \
+ samsung,pins = #_pin; \
+ samsung,pin-function = <1>; \
+ samsung,pin-pud = <0>; \
+ samsung,pin-drv = <PIN_DRV_ ##_drv>; \
+ samsung,pin-val = <_val>; \
+ }
+
+#define PIN_CFG(_pin, _sel, _pull, _drv) \
+ _pin { \
+ samsung,pins = #_pin; \
+ samsung,pin-function = <_sel>; \
+ samsung,pin-pud = <PIN_PULL_ ##_pull>; \
+ samsung,pin-drv = <PIN_DRV_ ##_drv>; \
+ }
+
#define PIN_SLP(_pin, _mode, _pull) \
_pin { \
samsung,pins = #_pin; \
diff --git a/arch/arm/boot/dts/exynos3250-rinato.dts b/arch/arm/boot/dts/exynos3250-rinato.dts
index 1f102f3a1ab1..31eb09bae0a2 100644
--- a/arch/arm/boot/dts/exynos3250-rinato.dts
+++ b/arch/arm/boot/dts/exynos3250-rinato.dts
@@ -681,7 +681,21 @@
&pinctrl_0 {
pinctrl-names = "default";
- pinctrl-0 = <&sleep0>;
+ pinctrl-0 = <&initial0 &sleep0>;
+
+ initial0: initial-state {
+ PIN_IN(gpa1-4, DOWN, LV1);
+ PIN_IN(gpa1-5, DOWN, LV1);
+
+ PIN_IN(gpc0-0, DOWN, LV1);
+ PIN_IN(gpc0-1, DOWN, LV1);
+ PIN_IN(gpc0-2, DOWN, LV1);
+ PIN_IN(gpc0-3, DOWN, LV1);
+ PIN_IN(gpc0-4, DOWN, LV1);
+
+ PIN_IN(gpd0-0, DOWN, LV1);
+ PIN_IN(gpd0-1, DOWN, LV1);
+ };
sleep0: sleep-state {
PIN_SLP(gpa0-0, INPUT, DOWN);
@@ -735,7 +749,60 @@
&pinctrl_1 {
pinctrl-names = "default";
- pinctrl-0 = <&sleep1>;
+ pinctrl-0 = <&initial1 &sleep1>;
+
+ initial1: initial-state {
+ PIN_IN(gpe0-6, DOWN, LV1);
+ PIN_IN(gpe0-7, DOWN, LV1);
+
+ PIN_IN(gpe1-0, DOWN, LV1);
+ PIN_IN(gpe1-3, DOWN, LV1);
+ PIN_IN(gpe1-4, DOWN, LV1);
+ PIN_IN(gpe1-5, DOWN, LV1);
+ PIN_IN(gpe1-6, DOWN, LV1);
+
+ PIN_IN(gpk2-0, DOWN, LV1);
+ PIN_IN(gpk2-1, DOWN, LV1);
+ PIN_IN(gpk2-2, DOWN, LV1);
+ PIN_IN(gpk2-3, DOWN, LV1);
+ PIN_IN(gpk2-4, DOWN, LV1);
+ PIN_IN(gpk2-5, DOWN, LV1);
+ PIN_IN(gpk2-6, DOWN, LV1);
+
+ PIN_IN(gpm0-0, DOWN, LV1);
+ PIN_IN(gpm0-1, DOWN, LV1);
+ PIN_IN(gpm0-2, DOWN, LV1);
+ PIN_IN(gpm0-3, DOWN, LV1);
+ PIN_IN(gpm0-4, DOWN, LV1);
+ PIN_IN(gpm0-5, DOWN, LV1);
+ PIN_IN(gpm0-6, DOWN, LV1);
+ PIN_IN(gpm0-7, DOWN, LV1);
+
+ PIN_IN(gpm1-0, DOWN, LV1);
+ PIN_IN(gpm1-1, DOWN, LV1);
+ PIN_IN(gpm1-2, DOWN, LV1);
+ PIN_IN(gpm1-3, DOWN, LV1);
+ PIN_IN(gpm1-4, DOWN, LV1);
+ PIN_IN(gpm1-5, DOWN, LV1);
+ PIN_IN(gpm1-6, DOWN, LV1);
+
+ PIN_IN(gpm2-0, DOWN, LV1);
+ PIN_IN(gpm2-1, DOWN, LV1);
+
+ PIN_IN(gpm3-0, DOWN, LV1);
+ PIN_IN(gpm3-1, DOWN, LV1);
+ PIN_IN(gpm3-2, DOWN, LV1);
+ PIN_IN(gpm3-3, DOWN, LV1);
+ PIN_IN(gpm3-4, DOWN, LV1);
+
+ PIN_IN(gpm4-1, DOWN, LV1);
+ PIN_IN(gpm4-2, DOWN, LV1);
+ PIN_IN(gpm4-3, DOWN, LV1);
+ PIN_IN(gpm4-4, DOWN, LV1);
+ PIN_IN(gpm4-5, DOWN, LV1);
+ PIN_IN(gpm4-6, DOWN, LV1);
+ PIN_IN(gpm4-7, DOWN, LV1);
+ };
sleep1: sleep-state {
PIN_SLP(gpe0-0, PREV, NONE);
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
