pinctrl: remove slew-rate parameter from tz1090

As the binding for slew-rate is under discussion and seems to need
more tought it will get removed for now, so it doesn't get an offical
release.

Therefore remove it again from the only current user, tz1090.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Documentation/devicetree/bindings/pinctrl/img,tz1090-pdc-pinctrl.txt

@@ -44,9 +44,6 @@ Optional subnode-properties:
   - bias-pull-down
   - input-schmitt-enable
   - input-schmitt-disable
-  - slew-rate: Integer, control slew rate of pins.
-      0: slow (half frequency)
-      1: fast
   - drive-strength: Integer, control drive strength of pins in mA.
       2: 2mA
       4: 4mA
@@ -83,7 +80,7 @@ Valid values for pin and group names are:
 
   drive groups:
 
-    These support input-schmitt-enable, input-schmitt-disable, slew-rate,
+    These support input-schmitt-enable, input-schmitt-disable,
     drive-strength, low-power-enable, and low-power-disable.
 
     pdc

Documentation/devicetree/bindings/pinctrl/img,tz1090-pinctrl.txt

@@ -44,9 +44,6 @@ Optional subnode-properties:
   - bias-pull-down
   - input-schmitt-enable
   - input-schmitt-disable
-  - slew-rate: Integer, control slew rate of pins.
-      0: slow (half frequency)
-      1: fast
   - drive-strength: Integer, control drive strength of pins in mA.
       2: 2mA
       4: 4mA
@@ -124,7 +121,6 @@ Valid values for pin and group names are:
         function:              afe, ts_out_0.
         input-schmitt-enable:  supported.
         input-schmitt-disable: supported.
-        slew-rate:             supported.
         drive-strength:        supported.
     pdm_d
         pins:                  pdm_d.
@@ -153,12 +149,11 @@ Valid values for pin and group names are:
                                lcd_trace, phy_ringosc.
         input-schmitt-enable:  supported.
         input-schmitt-disable: supported.
-        slew-rate:             supported.
         drive-strength:        supported.
 
   drive groups:
 
-    These all support input-schmitt-enable, input-schmitt-disable, slew-rate,
+    These all support input-schmitt-enable, input-schmitt-disable,
     and drive-strength.
 
     jtag

drivers/pinctrl/pinctrl-tz1090-pdc.c

@@ -809,11 +809,6 @@ static int tz1090_pdc_pinconf_group_reg(struct pinctrl_dev *pctldev,
 		*width = 1;
 		*map = tz1090_pdc_boolean_map;
 		break;
-	case PIN_CONFIG_SLEW_RATE:
-		*shift = REG_GPIO_CONTROL2_PDC_SR_S;
-		*width = 1;
-		*map = tz1090_pdc_boolean_map;
-		break;
 	case PIN_CONFIG_DRIVE_STRENGTH:
 		*shift = REG_GPIO_CONTROL2_PDC_DR_S;
 		*width = 2;

drivers/pinctrl/pinctrl-tz1090.c

@@ -1834,11 +1834,6 @@ static int tz1090_pinconf_group_reg(struct pinctrl_dev *pctldev,
 		*width = 1;
 		*map = tz1090_boolean_map;
 		break;
-	case PIN_CONFIG_SLEW_RATE:
-		*reg = REG_PINCTRL_SR;
-		*width = 1;
-		*map = tz1090_boolean_map;
-		break;
 	case PIN_CONFIG_DRIVE_STRENGTH:
 		*reg = REG_PINCTRL_DR;
 		*width = 2;