[RFC PATCH v2 0/4] arm64: dts: ti: am6: Add gpio nodes

[RFC PATCH v2 0/4] arm64: dts: ti: am6: Add gpio nodes

[Keerthy]

K3 AM6 platform has 2 instances of gpio banks on main domain
and 1 instance on wakeup domin. All are capable of generating
banked interrupts.

This series also adds 2 goio_keys nodes connected to SW6 SW5
switches and tested for gpio_keys interrupts.

The series depends on:
https://patchwork.kernel.org/project/linux-arm-kernel/list/?series=112791

Posting as RFC as it has dependencies to be merged.

Changes in v2:

  * Added a separate am654 compatible. 

Keerthy (4):
  dt-bindings: gpio: davinci: Add k3 am654 compatible
  arm64: dts: ti: am6-wakeup: Add gpio node
  arm64: dts: ti: am6-main: Add gpio nodes
  arm64: dts: ti: am654-base-board: Add gpio_keys node

 .../devicetree/bindings/gpio/gpio-davinci.txt | 18 +++++++++++
 arch/arm64/boot/dts/ti/k3-am65-main.dtsi      | 32 +++++++++++++++++++
 arch/arm64/boot/dts/ti/k3-am65-wakeup.dtsi    | 15 +++++++++
 .../arm64/boot/dts/ti/k3-am654-base-board.dts | 27 ++++++++++++++++
 4 files changed, 92 insertions(+)

-- 
2.17.1

[RFC PATCH v2 1/4] dt-bindings: gpio: davinci: Add k3 am654 compatible

[Keerthy]

The patch adds k3 am654 compatible, specific properties and
an example.

Signed-off-by: Keerthy <j-keerthy@ti.com>
---
 .../devicetree/bindings/gpio/gpio-davinci.txt  | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/Documentation/devicetree/bindings/gpio/gpio-davinci.txt b/Documentation/devicetree/bindings/gpio/gpio-davinci.txt
index 553b92a7e87b..bc6b4b62df83 100644
--- a/Documentation/devicetree/bindings/gpio/gpio-davinci.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio-davinci.txt
@@ -5,6 +5,7 @@ Required Properties:
 			"ti,keystone-gpio": for Keystone 2 66AK2H/K, 66AK2L,
 						66AK2E SoCs
 			"ti,k2g-gpio", "ti,keystone-gpio": for 66AK2G
+			"ti,am654-gpio", "ti,keystone-gpio": for TI K3 AM654
 
 - reg: Physical base address of the controller and the size of memory mapped
        registers.
@@ -145,3 +146,20 @@ gpio0: gpio@260bf00 {
 	ti,ngpio = <32>;
 	ti,davinci-gpio-unbanked = <32>;
 };
+
+Example for K3 AM654:
+
+wkup_gpio0: wkup_gpio0@42110000 {
+	compatible = "ti,am654-gpio", "ti,keystone-gpio";
+	reg = <0x42110000 0x100>;
+	gpio-controller;
+	#gpio-cells = <2>;
+	interrupt-parent = <&intr_wkup_gpio>;
+	interrupts = <59 128>, <59 129>, <59 130>, <59 131>;
+	interrupt-controller;
+	#interrupt-cells = <2>;
+	ti,ngpio = <56>;
+	ti,davinci-gpio-unbanked = <0>;
+	clocks = <&k3_clks 59 0>;
+	clock-names = "gpio";
+};
-- 
2.17.1

[RFC PATCH v2 2/4] arm64: dts: ti: am6-wakeup: Add gpio node

[Keerthy]

Add gpio0 node under wakeup domain. This has 56 gpios
and all are capable of generating banked interrupts.

Signed-off-by: Keerthy <j-keerthy@ti.com>
---
 arch/arm64/boot/dts/ti/k3-am65-wakeup.dtsi | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am65-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-am65-wakeup.dtsi
index f1ca171abdf8..9cf2c0849a24 100644
--- a/arch/arm64/boot/dts/ti/k3-am65-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am65-wakeup.dtsi
@@ -74,4 +74,19 @@
 		ti,sci-dst-id = <56>;
 		ti,sci-rm-range-girq = <0x4>;
 	};
+
+	wkup_gpio0: wkup_gpio0@42110000 {
+		compatible = "ti,am654-gpio", "ti,keystone-gpio";
+		reg = <0x42110000 0x100>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-parent = <&intr_wkup_gpio>;
+		interrupts = <59 128>, <59 129>, <59 130>, <59 131>;
+		interrupt-controller;
+		#interrupt-cells = <2>;
+		ti,ngpio = <56>;
+		ti,davinci-gpio-unbanked = <0>;
+		clocks = <&k3_clks 59 0>;
+		clock-names = "gpio";
+	};
 };
-- 
2.17.1

[RFC PATCH v2 3/4] arm64: dts: ti: am6-main: Add gpio nodes

[Keerthy]

Add gpio0/1 nodes under main domain. They have 96 and 90 gpios
respectively and all are capable of generating banked interrupts.

Signed-off-by: Keerthy <j-keerthy@ti.com>
---
 arch/arm64/boot/dts/ti/k3-am65-main.dtsi | 32 ++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
index 22154f401930..182efe70402b 100644
--- a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
@@ -350,4 +350,36 @@
 			ti,sci-rm-range-global-event = <0x1>;
 		};
 	};
+
+	main_gpio0:  main_gpio0@600000 {
+		compatible = "ti,am654-gpio", "ti,keystone-gpio";
+		reg = <0x0 0x600000 0x0 0x100>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-parent = <&intr_main_gpio>;
+		interrupts = <57 256>, <57 257>, <57 258>, <57 259>, <57 260>,
+				<57 261>;
+		interrupt-controller;
+		#interrupt-cells = <2>;
+		ti,ngpio = <96>;
+		ti,davinci-gpio-unbanked = <0>;
+		clocks = <&k3_clks 57 0>;
+		clock-names = "gpio";
+	};
+
+	main_gpio1:  main_gpio1@601000 {
+		compatible = "ti,am654-gpio", "ti,keystone-gpio";
+		reg = <0x0 0x601000 0x0 0x100>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-parent = <&intr_main_gpio>;
+		interrupts = <58 256>, <58 257>, <58 258>, <58 259>, <58 260>,
+				<58 261>;
+		interrupt-controller;
+			#interrupt-cells = <2>;
+		ti,ngpio = <90>;
+		ti,davinci-gpio-unbanked = <0>;
+		clocks = <&k3_clks 58 0>;
+		clock-names = "gpio";
+	};
 };
-- 
2.17.1

[RFC PATCH v2 4/4] arm64: dts: ti: am654-base-board: Add gpio_keys node

[Keerthy]

There are 2 push buttons: SW5 and SW6 that are basically connected to
WKUP_GPIO0_24 and WKUP_GPIO0_27 respectively. Add the respective
nodes and the pinctrl data to set the mode to GPIO and Input.

Signed-off-by: Keerthy <j-keerthy@ti.com>
---
 .../arm64/boot/dts/ti/k3-am654-base-board.dts | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts b/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
index cf1aa276a1ea..ea50b6e36eff 100644
--- a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
@@ -6,6 +6,7 @@
 /dts-v1/;
 
 #include "k3-am654.dtsi"
+#include <dt-bindings/input/input.h>
 
 / {
 	compatible =  "ti,am654-evm", "ti,am654";
@@ -33,6 +34,25 @@
 			no-map;
 		};
 	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+		autorepeat;
+		pinctrl-names = "default";
+		pinctrl-0 = <&push_button_pins_default>;
+
+		sw5 {
+			label = "GPIO Key USER1";
+			linux,code = <BTN_0>;
+			gpios = <&wkup_gpio0 24 GPIO_ACTIVE_LOW>;
+		};
+
+		sw6 {
+			label = "GPIO Key USER2";
+			linux,code = <BTN_1>;
+			gpios = <&wkup_gpio0 27 GPIO_ACTIVE_LOW>;
+		};
+	};
 };
 
 &wkup_pmx0 {
@@ -42,6 +62,13 @@
 			AM65X_WKUP_IOPAD(0x00e4, PIN_INPUT, 0) /* (AD6) WKUP_I2C0_SDA */
 		>;
 	};
+
+	push_button_pins_default: push_button__pins_default {
+		pinctrl-single,pins = <
+			AM65X_WKUP_IOPAD(0x0030, PIN_INPUT, 7) /* (R5) WKUP_GPIO0_24 */
+			AM65X_WKUP_IOPAD(0x003c, PIN_INPUT, 7) /* (P2) WKUP_GPIO0_27 */
+		>;
+	};
 };
 
 &main_pmx0 {
-- 
2.17.1