[PATCH 0/4] ARM: keystone: enable GPIO support

[PATCH 0/4] ARM: keystone: enable GPIO support

[Grygorii Strashko]

This series adds Keystone GPIO IP definition in DT and enable GPIO support in
Keystone configuration file.

Also, it enables LEDs support for Keystone 2 K2H EVM as specified in board 
schematic. For more information see:
- http://www.advantech.com/Support/TI-EVM/EVMK2HX.aspx 

Depends on:
[PATCH 0/2] gpio: davinci: reuse for keystone arch
- https://lkml.org/lkml/2013/12/12/366

Grygorii Strashko (4):
  arm: dts: keystone: add GPIO device entry
  ARM: keystone_defconfig: enable gpio support
  arm: dts: keystone-evm: add LEDs supports
  ARM: keystone_defconfig: enable LED support

 arch/arm/boot/dts/k2hk-evm.dts      |   23 ++++++++++++++++++
 arch/arm/boot/dts/keystone.dtsi     |   45 +++++++++++++++++++++++++++++++++++
 arch/arm/configs/keystone_defconfig |   11 +++++++++
 3 files changed, 79 insertions(+)

-- 
1.7.9.5

[PATCH 1/4] arm: dts: keystone: add GPIO device entry

[Grygorii Strashko]

This patch adds Keystone GPIO IP device definitions in DT which supports
up to 32 GPIO lines and each GPIO line can be configured as separate
interrupt source (so called "unbanked" IRQ).

For more information see:
 http://www.ti.com/lit/ug/sprugv1/sprugv1.pdf

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
---
 arch/arm/boot/dts/keystone.dtsi |   45 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/arch/arm/boot/dts/keystone.dtsi b/arch/arm/boot/dts/keystone.dtsi
index f6d6d9e..6e93bf5 100644
--- a/arch/arm/boot/dts/keystone.dtsi
+++ b/arch/arm/boot/dts/keystone.dtsi
@@ -7,6 +7,7 @@
  */
 
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/gpio/gpio.h>
 
 #include "skeleton.dtsi"
 
@@ -181,5 +182,49 @@
 			interrupts = <GIC_SPI 300 IRQ_TYPE_EDGE_RISING>;
 			clocks = <&clkspi>;
 		};
+
+		gpio0: gpio@260bf00 {
+				compatible = "ti,keystone-gpio";
+				reg = <0x0260bf00 0x100>;
+				gpio-controller;
+				#gpio-cells = <2>;
+				/* HW Interrupts mapped to GPIO pins */
+				interrupts = <GIC_SPI 120 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 121 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 122 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 123 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 124 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 125 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 126 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 127 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 128 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 129 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 130 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 131 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 132 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 133 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 134 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 135 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 136 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 137 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 138 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 139 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 140 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 141 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 142 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 143 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 144 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 145 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 146 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 147 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 148 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 149 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 150 IRQ_TYPE_EDGE_RISING
+							  GIC_SPI 151 IRQ_TYPE_EDGE_RISING>;
+				clocks = <&clkgpio>;
+				clock-names = "gpio";
+				ti,ngpio = <32>;
+				ti,davinci-gpio-unbanked = <32>;
+		};
 	};
 };
-- 
1.7.9.5

[PATCH 2/4] ARM: keystone_defconfig: enable gpio support

[Grygorii Strashko]

Enable enable GPIO support for Keystone by setting CONFIG_GPIOLIB and
CONFIG_GPIO_DAVINCI options in keystone_defconfig.

Signed-off-by: Grygorii Strashko <grygorii.strashko-l0cyMroinI0@public.gmane.org>
---
 arch/arm/configs/keystone_defconfig |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm/configs/keystone_defconfig b/arch/arm/configs/keystone_defconfig
index 9943e5d..e911f7f 100644
--- a/arch/arm/configs/keystone_defconfig
+++ b/arch/arm/configs/keystone_defconfig
@@ -158,3 +158,6 @@ CONFIG_CRYPTO_DES=y
 CONFIG_CRYPTO_ANSI_CPRNG=y
 CONFIG_CRYPTO_USER_API_HASH=y
 CONFIG_CRYPTO_USER_API_SKCIPHER=y
+CONFIG_GPIOLIB=y
+CONFIG_GPIO_SYSFS=y
+CONFIG_GPIO_DAVINCI=y
-- 
1.7.9.5

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[PATCH 3/4] arm: dts: keystone-evm: add LEDs supports

[Grygorii Strashko]

Keystone EVMK2HX supports 4 debug LEDs controlled by GPIO lines as
following (active level is high);

DBG_D1 green gpio12
DBG_D1 red   gpio13
DBG_D1 blue  gpio14
DBG_D1 blue  gpio15

For more information see schematics:
 http://wfcache.advantech.com/www/support/TI-EVM/download/Schematics/PDF/K2H_K2EVM-HK_SCH_A102_Rev1_0.pdf

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
---
 arch/arm/boot/dts/k2hk-evm.dts |   23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/arch/arm/boot/dts/k2hk-evm.dts b/arch/arm/boot/dts/k2hk-evm.dts
index 15b3a95..07bf1e9 100644
--- a/arch/arm/boot/dts/k2hk-evm.dts
+++ b/arch/arm/boot/dts/k2hk-evm.dts
@@ -52,4 +52,27 @@
 			};
 		};
 	};
+
+	leds {
+		compatible = "gpio-leds";
+		debug1_1 {
+			label = "keystone:green:debug1";
+			gpios = <&gpio0 12 GPIO_ACTIVE_HIGH>; /* 12 */
+		};
+
+		debug1_2 {
+			label = "keystone:red:debug1";
+			gpios = <&gpio0 13 GPIO_ACTIVE_HIGH>; /* 13 */
+		};
+
+		debug2 {
+			label = "keystone:blue:debug2";
+			gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>; /* 14 */
+		};
+
+		debug3 {
+			label = "keystone:blue:debug3";
+			gpios = <&gpio0 15 GPIO_ACTIVE_HIGH>; /* 15 */
+		};
+	};
 };
-- 
1.7.9.5

[PATCH 4/4] ARM: keystone_defconfig: enable LED support

[Grygorii Strashko]

The Keystone GPIO functionality is ready for use, so LED support can be
enabled in config.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
---
 arch/arm/configs/keystone_defconfig |    8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm/configs/keystone_defconfig b/arch/arm/configs/keystone_defconfig
index e911f7f..fb1eb8a 100644
--- a/arch/arm/configs/keystone_defconfig
+++ b/arch/arm/configs/keystone_defconfig
@@ -161,3 +161,11 @@ CONFIG_CRYPTO_USER_API_SKCIPHER=y
 CONFIG_GPIOLIB=y
 CONFIG_GPIO_SYSFS=y
 CONFIG_GPIO_DAVINCI=y
+CONFIG_LEDS_CLASS=y
+CONFIG_NEW_LEDS=y
+CONFIG_LEDS_GPIO=y
+CONFIG_LEDS_TRIGGERS=y
+CONFIG_LEDS_TRIGGER_ONESHOT=y
+CONFIG_LEDS_TRIGGER_HEARTBEAT=y
+CONFIG_LEDS_TRIGGER_BACKLIGHT=y
+CONFIG_LEDS_TRIGGER_GPIO=y
-- 
1.7.9.5

Re: [PATCH 0/4] ARM: keystone: enable GPIO support

[Santosh Shilimkar]

On Monday 16 December 2013 11:39 AM, Grygorii Strashko wrote:
> This series adds Keystone GPIO IP definition in DT and enable GPIO support in
> Keystone configuration file.
> 
> Also, it enables LEDs support for Keystone 2 K2H EVM as specified in board 
> schematic. For more information see:
> - http://www.advantech.com/Support/TI-EVM/EVMK2HX.aspx 
> 
> Depends on:
> [PATCH 0/2] gpio: davinci: reuse for keystone arch
> - https://lkml.org/lkml/2013/12/12/366
> 
> Grygorii Strashko (4):
>   arm: dts: keystone: add GPIO device entry
>   ARM: keystone_defconfig: enable gpio support
>   arm: dts: keystone-evm: add LEDs supports
>   ARM: keystone_defconfig: enable LED support
> 
Patch subjects should be consistent. I will fix
them while applying it on my tree. Will wait
for the GPIO driver support patches state
before applying the subject series.

Thanks for the patches.

Regards,
Santosh

[PATCH v2] arm: dts: keystone: add gpio device entry

[Grygorii Strashko]

This patch adds Keystone GPIO IP device definitions in DT which supports
up to 32 GPIO lines and each GPIO line can be configured as separate
interrupt source (so called "unbanked" IRQ).

For more information see:
 http://www.ti.com/lit/ug/sprugv1/sprugv1.pdf

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
---
Hi Santosh,

I've changed format of "interrupts" property as discussed.

 arch/arm/boot/dts/keystone.dtsi |   45 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/arch/arm/boot/dts/keystone.dtsi b/arch/arm/boot/dts/keystone.dtsi
index f6d6d9e..53eefe3 100644
--- a/arch/arm/boot/dts/keystone.dtsi
+++ b/arch/arm/boot/dts/keystone.dtsi
@@ -7,6 +7,7 @@
  */
 
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/gpio/gpio.h>
 
 #include "skeleton.dtsi"
 
@@ -181,5 +182,49 @@
 			interrupts = <GIC_SPI 300 IRQ_TYPE_EDGE_RISING>;
 			clocks = <&clkspi>;
 		};
+
+		gpio0: gpio@260bf00 {
+			compatible = "ti,keystone-gpio";
+			reg = <0x0260bf00 0x100>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			/* HW Interrupts mapped to GPIO pins */
+			interrupts = <GIC_SPI 120 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 121 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 122 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 123 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 124 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 125 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 126 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 127 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 128 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 129 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 130 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 131 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 132 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 133 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 134 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 135 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 136 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 137 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 138 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 139 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 140 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 141 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 142 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 143 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 144 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 145 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 146 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 147 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 148 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 149 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 150 IRQ_TYPE_EDGE_RISING>,
+					<GIC_SPI 151 IRQ_TYPE_EDGE_RISING>;
+			clocks = <&clkgpio>;
+			clock-names = "gpio";
+			ti,ngpio = <32>;
+			ti,davinci-gpio-unbanked = <32>;
+		};
 	};
 };
-- 
1.7.9.5

Re: [PATCH v2] arm: dts: keystone: add gpio device entry

[Santosh Shilimkar]

On Tuesday 24 December 2013 06:52 AM, Strashko, Grygorii wrote:
> This patch adds Keystone GPIO IP device definitions in DT which supports
> up to 32 GPIO lines and each GPIO line can be configured as separate
> interrupt source (so called "unbanked" IRQ).
> 
> For more information see:
>  http://www.ti.com/lit/ug/sprugv1/sprugv1.pdf
> 
> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
> ---
> Hi Santosh,
> 
> I've changed format of "interrupts" property as discussed.
> 
Thanks. This version looks better now. Will take this in my
queue.

Regards,
Santosh