pinctrl: single: AM437x: Add pinctrl compatibility

AM437x pinctrl definitions now differ from traditional 16 bit OMAP pin
ctrl definitions, in that all 32 bits are used to describe a single pin

Also the location of wakeupenable and event bits have changed.

Signed-off-by: Keerthy <j-keerthy@ti.com>
[nm@ti.com: minor updates]
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Documentation/devicetree/bindings/pinctrl/ti,omap-pinctrl.txt

@@ -8,5 +8,6 @@ Required properties:
   "ti,omap4-padconf" - OMAP4 compatible pinctrl
   "ti,omap5-padconf" - OMAP5 compatible pinctrl
   "ti,dra7-padconf" - DRA7 compatible pinctrl
+  "ti,am437-padconf" - AM437x compatible pinctrl
 
 See Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt for further details.

drivers/pinctrl/pinctrl-single.c

@@ -1987,6 +1987,12 @@ static const struct pcs_soc_data pinctrl_single_dra7 = {
 	.irq_status_mask = (1 << 25),	/* WAKEUPEVENT */
 };
 
+static const struct pcs_soc_data pinctrl_single_am437x = {
+	.flags = PCS_QUIRK_SHARED_IRQ,
+	.irq_enable_mask = (1 << 29),   /* OMAP_WAKEUP_EN */
+	.irq_status_mask = (1 << 30),   /* OMAP_WAKEUP_EVENT */
+};
+
 static const struct pcs_soc_data pinctrl_single = {
 };
 
@@ -1999,6 +2005,7 @@ static struct of_device_id pcs_of_match[] = {
 	{ .compatible = "ti,omap4-padconf", .data = &pinctrl_single_omap_wkup },
 	{ .compatible = "ti,omap5-padconf", .data = &pinctrl_single_omap_wkup },
 	{ .compatible = "ti,dra7-padconf", .data = &pinctrl_single_dra7 },
+	{ .compatible = "ti,am437-padconf", .data = &pinctrl_single_am437x },
 	{ .compatible = "pinctrl-single", .data = &pinctrl_single },
 	{ .compatible = "pinconf-single", .data = &pinconf_single },
 	{ },