[PATCH 0/2] ARM: berlin: add GPIO support for the BG2Q

[PATCH 0/2] ARM: berlin: add GPIO support for the BG2Q

[Antoine Ténart]

This series add the support for the GPIOs of the Berlin BG2Q. We use the
newly integrated dwapb GPIO driver here.

This applies on top of Alexandre's BG2Q symbol introduction[1] and the dwapb
gpio patch fixing IRQ initialization[2].

[1] https://patchwork.kernel.org/patch/3876141/
[2] https://lkml.org/lkml/2014/4/7/96

Antoine Ténart (2):
  ARM: berlin: add the LIBGPIO as a dependency for the BG2Q
  ARM: dts: berlin: add GPIO nodes for the BG2Q

 arch/arm/boot/dts/berlin2q.dtsi | 102 ++++++++++++++++++++++++++++++++++++++++
 arch/arm/mach-berlin/Kconfig    |   1 +
 2 files changed, 103 insertions(+)

-- 
1.8.3.2

[PATCH 0/2] ARM: berlin: add GPIO support for the BG2Q

[Antoine Ténart]

This series add the support for the GPIOs of the Berlin BG2Q. We use the
newly integrated dwapb GPIO driver here.

This applies on top of Alexandre's BG2Q symbol introduction[1] and the dwapb
gpio patch fixing IRQ initialization[2].

[1] https://patchwork.kernel.org/patch/3876141/
[2] https://lkml.org/lkml/2014/4/7/96

Antoine Ténart (2):
  ARM: berlin: add the LIBGPIO as a dependency for the BG2Q
  ARM: dts: berlin: add GPIO nodes for the BG2Q

 arch/arm/boot/dts/berlin2q.dtsi | 102 ++++++++++++++++++++++++++++++++++++++++
 arch/arm/mach-berlin/Kconfig    |   1 +
 2 files changed, 103 insertions(+)

-- 
1.8.3.2


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[PATCH 0/2] ARM: berlin: add GPIO support for the BG2Q

[Antoine Ténart]

This series add the support for the GPIOs of the Berlin BG2Q. We use the
newly integrated dwapb GPIO driver here.

This applies on top of Alexandre's BG2Q symbol introduction[1] and the dwapb
gpio patch fixing IRQ initialization[2].

[1] https://patchwork.kernel.org/patch/3876141/
[2] https://lkml.org/lkml/2014/4/7/96

Antoine T?nart (2):
  ARM: berlin: add the LIBGPIO as a dependency for the BG2Q
  ARM: dts: berlin: add GPIO nodes for the BG2Q

 arch/arm/boot/dts/berlin2q.dtsi | 102 ++++++++++++++++++++++++++++++++++++++++
 arch/arm/mach-berlin/Kconfig    |   1 +
 2 files changed, 103 insertions(+)

-- 
1.8.3.2

[PATCH 1/2] ARM: berlin: add the LIBGPIO as a dependency for the BG2Q

[Antoine Ténart]

The BG2Q has GPIOs driven by the dwapb GPIO driver. Add the LIBGPIO as a
dependency to be able to support them.

Signed-off-by: Antoine Ténart <antoine.tenart@free-electrons.com>
---
 arch/arm/mach-berlin/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-berlin/Kconfig b/arch/arm/mach-berlin/Kconfig
index 291f1cac6c3d..c31968712095 100644
--- a/arch/arm/mach-berlin/Kconfig
+++ b/arch/arm/mach-berlin/Kconfig
@@ -28,6 +28,7 @@ config MACH_BERLIN_BG2Q
 	select CPU_V7
 	select HAVE_ARM_TWD if SMP
 	select HAVE_SMP
+	select ARCH_REQUIRE_GPIOLIB
 
 endmenu
 
-- 
1.8.3.2

[PATCH 1/2] ARM: berlin: add the LIBGPIO as a dependency for the BG2Q

[Antoine Ténart]

The BG2Q has GPIOs driven by the dwapb GPIO driver. Add the LIBGPIO as a
dependency to be able to support them.

Signed-off-by: Antoine Ténart <antoine.tenart@free-electrons.com>
---
 arch/arm/mach-berlin/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-berlin/Kconfig b/arch/arm/mach-berlin/Kconfig
index 291f1cac6c3d..c31968712095 100644
--- a/arch/arm/mach-berlin/Kconfig
+++ b/arch/arm/mach-berlin/Kconfig
@@ -28,6 +28,7 @@ config MACH_BERLIN_BG2Q
 	select CPU_V7
 	select HAVE_ARM_TWD if SMP
 	select HAVE_SMP
+	select ARCH_REQUIRE_GPIOLIB
 
 endmenu
 
-- 
1.8.3.2


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH 1/2] ARM: berlin: add the LIBGPIO as a dependency for the BG2Q

[Antoine Ténart]

The BG2Q has GPIOs driven by the dwapb GPIO driver. Add the LIBGPIO as a
dependency to be able to support them.

Signed-off-by: Antoine T?nart <antoine.tenart@free-electrons.com>
---
 arch/arm/mach-berlin/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-berlin/Kconfig b/arch/arm/mach-berlin/Kconfig
index 291f1cac6c3d..c31968712095 100644
--- a/arch/arm/mach-berlin/Kconfig
+++ b/arch/arm/mach-berlin/Kconfig
@@ -28,6 +28,7 @@ config MACH_BERLIN_BG2Q
 	select CPU_V7
 	select HAVE_ARM_TWD if SMP
 	select HAVE_SMP
+	select ARCH_REQUIRE_GPIOLIB
 
 endmenu
 
-- 
1.8.3.2

[PATCH 2/2] ARM: dts: berlin: add GPIO nodes for the BG2Q

[Antoine Ténart]

The Marvell Berlin BG2Q has 6 GPIO ports compatible with the snps,dw-apb-gpio
driver. This patch add the corresponding device tree nodes.

Signed-off-by: Antoine Ténart <antoine.tenart@free-electrons.com>
---
 arch/arm/boot/dts/berlin2q.dtsi | 102 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 102 insertions(+)

diff --git a/arch/arm/boot/dts/berlin2q.dtsi b/arch/arm/boot/dts/berlin2q.dtsi
index e6e556055dfc..b2625f896bc5 100644
--- a/arch/arm/boot/dts/berlin2q.dtsi
+++ b/arch/arm/boot/dts/berlin2q.dtsi
@@ -109,6 +109,78 @@
 			ranges = <0 0xe80000 0x10000>;
 			interrupt-parent = <&aic>;
 
+			gpio0: gpio@0400 {
+				compatible = "snps,dw-apb-gpio";
+				reg = <0x0400 0x400>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				porta: gpio-controller@0 {
+					compatible = "snps,dw-apb-gpio-port";
+					gpio-controller;
+					#gpio-cells = <2>;
+					snps,nr-gpios = <32>;
+					reg = <0>;
+					interrupt-controller;
+					#interrupt-cells = <2>;
+					interrupts = <0>;
+				};
+			};
+
+			gpio1: gpio@0800 {
+				compatible = "snps,dw-apb-gpio";
+				reg = <0x0800 0x400>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				portb: gpio-controller@1 {
+					compatible = "snps,dw-apb-gpio-port";
+					gpio-controller;
+					#gpio-cells = <2>;
+					snps,nr-gpios = <32>;
+					reg = <0>;
+					interrupt-controller;
+					#interrupt-cells = <2>;
+					interrupts = <1>;
+				};
+			};
+
+			gpio2: gpio@0c00 {
+				compatible = "snps,dw-apb-gpio";
+				reg = <0x0c00 0x400>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				portc: gpio-controller@2 {
+					compatible = "snps,dw-apb-gpio-port";
+					gpio-controller;
+					#gpio-cells = <2>;
+					snps,nr-gpios = <32>;
+					reg = <0>;
+					interrupt-controller;
+					#interrupt-cells = <2>;
+					interrupts = <2>;
+				};
+			};
+
+			gpio3: gpio@1000 {
+				compatible = "snps,dw-apb-gpio";
+				reg = <0x1000 0x400>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				portd: gpio-controller@3 {
+					compatible = "snps,dw-apb-gpio-port";
+					gpio-controller;
+					#gpio-cells = <2>;
+					snps,nr-gpios = <32>;
+					reg = <0>;
+					interrupt-controller;
+					#interrupt-cells = <2>;
+					interrupts = <3>;
+				};
+			};
+
 			timer0: timer@2c00 {
 				compatible = "snps,dw-apb-timer";
 				reg = <0x2c00 0x14>;
@@ -181,6 +253,36 @@
 				interrupt-parent = <&gic>;
 				interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
 			};
+
+			gpio4: gpio@5000 {
+				compatible = "snps,dw-apb-gpio";
+				reg = <0x5000 0x400>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				porte: gpio-controller@4 {
+					compatible = "snps,dw-apb-gpio-port";
+					gpio-controller;
+					#gpio-cells = <2>;
+					snps,nr-gpios = <32>;
+					reg = <0>;
+				};
+			};
+
+			gpio5: gpio@c000 {
+				compatible = "snps,dw-apb-gpio";
+				reg = <0xc000 0x400>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				portf: gpio-controller@5 {
+					compatible = "snps,dw-apb-gpio-port";
+					gpio-controller;
+					#gpio-cells = <2>;
+					snps,nr-gpios = <32>;
+					reg = <0>;
+				};
+			};
 		};
 
 		pinctrl: pinctrl@0 {
-- 
1.8.3.2

[PATCH 2/2] ARM: dts: berlin: add GPIO nodes for the BG2Q

[Antoine Ténart]

The Marvell Berlin BG2Q has 6 GPIO ports compatible with the snps,dw-apb-gpio
driver. This patch add the corresponding device tree nodes.

Signed-off-by: Antoine T?nart <antoine.tenart@free-electrons.com>
---
 arch/arm/boot/dts/berlin2q.dtsi | 102 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 102 insertions(+)

diff --git a/arch/arm/boot/dts/berlin2q.dtsi b/arch/arm/boot/dts/berlin2q.dtsi
index e6e556055dfc..b2625f896bc5 100644
--- a/arch/arm/boot/dts/berlin2q.dtsi
+++ b/arch/arm/boot/dts/berlin2q.dtsi
@@ -109,6 +109,78 @@
 			ranges = <0 0xe80000 0x10000>;
 			interrupt-parent = <&aic>;
 
+			gpio0: gpio at 0400 {
+				compatible = "snps,dw-apb-gpio";
+				reg = <0x0400 0x400>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				porta: gpio-controller at 0 {
+					compatible = "snps,dw-apb-gpio-port";
+					gpio-controller;
+					#gpio-cells = <2>;
+					snps,nr-gpios = <32>;
+					reg = <0>;
+					interrupt-controller;
+					#interrupt-cells = <2>;
+					interrupts = <0>;
+				};
+			};
+
+			gpio1: gpio at 0800 {
+				compatible = "snps,dw-apb-gpio";
+				reg = <0x0800 0x400>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				portb: gpio-controller at 1 {
+					compatible = "snps,dw-apb-gpio-port";
+					gpio-controller;
+					#gpio-cells = <2>;
+					snps,nr-gpios = <32>;
+					reg = <0>;
+					interrupt-controller;
+					#interrupt-cells = <2>;
+					interrupts = <1>;
+				};
+			};
+
+			gpio2: gpio at 0c00 {
+				compatible = "snps,dw-apb-gpio";
+				reg = <0x0c00 0x400>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				portc: gpio-controller at 2 {
+					compatible = "snps,dw-apb-gpio-port";
+					gpio-controller;
+					#gpio-cells = <2>;
+					snps,nr-gpios = <32>;
+					reg = <0>;
+					interrupt-controller;
+					#interrupt-cells = <2>;
+					interrupts = <2>;
+				};
+			};
+
+			gpio3: gpio at 1000 {
+				compatible = "snps,dw-apb-gpio";
+				reg = <0x1000 0x400>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				portd: gpio-controller at 3 {
+					compatible = "snps,dw-apb-gpio-port";
+					gpio-controller;
+					#gpio-cells = <2>;
+					snps,nr-gpios = <32>;
+					reg = <0>;
+					interrupt-controller;
+					#interrupt-cells = <2>;
+					interrupts = <3>;
+				};
+			};
+
 			timer0: timer at 2c00 {
 				compatible = "snps,dw-apb-timer";
 				reg = <0x2c00 0x14>;
@@ -181,6 +253,36 @@
 				interrupt-parent = <&gic>;
 				interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
 			};
+
+			gpio4: gpio at 5000 {
+				compatible = "snps,dw-apb-gpio";
+				reg = <0x5000 0x400>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				porte: gpio-controller at 4 {
+					compatible = "snps,dw-apb-gpio-port";
+					gpio-controller;
+					#gpio-cells = <2>;
+					snps,nr-gpios = <32>;
+					reg = <0>;
+				};
+			};
+
+			gpio5: gpio at c000 {
+				compatible = "snps,dw-apb-gpio";
+				reg = <0xc000 0x400>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				portf: gpio-controller at 5 {
+					compatible = "snps,dw-apb-gpio-port";
+					gpio-controller;
+					#gpio-cells = <2>;
+					snps,nr-gpios = <32>;
+					reg = <0>;
+				};
+			};
 		};
 
 		pinctrl: pinctrl at 0 {
-- 
1.8.3.2

Re: [PATCH 1/2] ARM: berlin: add the LIBGPIO as a dependency for the BG2Q

[Jisheng Zhang]

Hi Antoine,

On Tue, 15 Apr 2014 01:07:24 -0700
Antoine Ténart <antoine.tenart@free-electrons.com> wrote:

> The BG2Q has GPIOs driven by the dwapb GPIO driver. Add the LIBGPIO as a
> dependency to be able to support them.
> 
> Signed-off-by: Antoine Ténart <antoine.tenart@free-electrons.com>
> ---
>  arch/arm/mach-berlin/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/mach-berlin/Kconfig b/arch/arm/mach-berlin/Kconfig
> index 291f1cac6c3d..c31968712095 100644
> --- a/arch/arm/mach-berlin/Kconfig
> +++ b/arch/arm/mach-berlin/Kconfig
> @@ -28,6 +28,7 @@ config MACH_BERLIN_BG2Q
>  	select CPU_V7
>  	select HAVE_ARM_TWD if SMP
>  	select HAVE_SMP
> +	select ARCH_REQUIRE_GPIOLIB

alphabetically sort.

Others looks good ;)

Thanks,
Jisheng

Re: [PATCH 1/2] ARM: berlin: add the LIBGPIO as a dependency for the BG2Q

[Jisheng Zhang]

Hi Antoine,

On Tue, 15 Apr 2014 01:07:24 -0700
Antoine Ténart <antoine.tenart@free-electrons.com> wrote:

> The BG2Q has GPIOs driven by the dwapb GPIO driver. Add the LIBGPIO as a
> dependency to be able to support them.
> 
> Signed-off-by: Antoine Ténart <antoine.tenart@free-electrons.com>
> ---
>  arch/arm/mach-berlin/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/mach-berlin/Kconfig b/arch/arm/mach-berlin/Kconfig
> index 291f1cac6c3d..c31968712095 100644
> --- a/arch/arm/mach-berlin/Kconfig
> +++ b/arch/arm/mach-berlin/Kconfig
> @@ -28,6 +28,7 @@ config MACH_BERLIN_BG2Q
>  	select CPU_V7
>  	select HAVE_ARM_TWD if SMP
>  	select HAVE_SMP
> +	select ARCH_REQUIRE_GPIOLIB

alphabetically sort.

Others looks good ;)

Thanks,
Jisheng

[PATCH 1/2] ARM: berlin: add the LIBGPIO as a dependency for the BG2Q

[Jisheng Zhang]

Hi Antoine,

On Tue, 15 Apr 2014 01:07:24 -0700
Antoine T?nart <antoine.tenart@free-electrons.com> wrote:

> The BG2Q has GPIOs driven by the dwapb GPIO driver. Add the LIBGPIO as a
> dependency to be able to support them.
> 
> Signed-off-by: Antoine T?nart <antoine.tenart@free-electrons.com>
> ---
>  arch/arm/mach-berlin/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/mach-berlin/Kconfig b/arch/arm/mach-berlin/Kconfig
> index 291f1cac6c3d..c31968712095 100644
> --- a/arch/arm/mach-berlin/Kconfig
> +++ b/arch/arm/mach-berlin/Kconfig
> @@ -28,6 +28,7 @@ config MACH_BERLIN_BG2Q
>  	select CPU_V7
>  	select HAVE_ARM_TWD if SMP
>  	select HAVE_SMP
> +	select ARCH_REQUIRE_GPIOLIB

alphabetically sort.

Others looks good ;)

Thanks,
Jisheng

Re: [PATCH 1/2] ARM: berlin: add the LIBGPIO as a dependency for the BG2Q

[Sebastian Hesselbarth]

On 04/15/2014 10:07 AM, Antoine Ténart wrote:
> The BG2Q has GPIOs driven by the dwapb GPIO driver. Add the LIBGPIO as a
> dependency to be able to support them.
>
> Signed-off-by: Antoine Ténart <antoine.tenart@free-electrons.com>
> ---
>   arch/arm/mach-berlin/Kconfig | 1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/mach-berlin/Kconfig b/arch/arm/mach-berlin/Kconfig
> index 291f1cac6c3d..c31968712095 100644
> --- a/arch/arm/mach-berlin/Kconfig
> +++ b/arch/arm/mach-berlin/Kconfig
> @@ -28,6 +28,7 @@ config MACH_BERLIN_BG2Q
>   	select CPU_V7
>   	select HAVE_ARM_TWD if SMP
>   	select HAVE_SMP
> +	select ARCH_REQUIRE_GPIOLIB

Apart from Jisheng's comment, I think we can directly move it
into arch/arm/Kconfig's MACH_BERLIN directly?

Sebastian

>   endmenu
>
>

Re: [PATCH 1/2] ARM: berlin: add the LIBGPIO as a dependency for the BG2Q

[Sebastian Hesselbarth]

On 04/15/2014 10:07 AM, Antoine Ténart wrote:
> The BG2Q has GPIOs driven by the dwapb GPIO driver. Add the LIBGPIO as a
> dependency to be able to support them.
>
> Signed-off-by: Antoine Ténart <antoine.tenart-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
> ---
>   arch/arm/mach-berlin/Kconfig | 1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/mach-berlin/Kconfig b/arch/arm/mach-berlin/Kconfig
> index 291f1cac6c3d..c31968712095 100644
> --- a/arch/arm/mach-berlin/Kconfig
> +++ b/arch/arm/mach-berlin/Kconfig
> @@ -28,6 +28,7 @@ config MACH_BERLIN_BG2Q
>   	select CPU_V7
>   	select HAVE_ARM_TWD if SMP
>   	select HAVE_SMP
> +	select ARCH_REQUIRE_GPIOLIB

Apart from Jisheng's comment, I think we can directly move it
into arch/arm/Kconfig's MACH_BERLIN directly?

Sebastian

>   endmenu
>
>

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[PATCH 1/2] ARM: berlin: add the LIBGPIO as a dependency for the BG2Q

[Sebastian Hesselbarth]

On 04/15/2014 10:07 AM, Antoine T?nart wrote:
> The BG2Q has GPIOs driven by the dwapb GPIO driver. Add the LIBGPIO as a
> dependency to be able to support them.
>
> Signed-off-by: Antoine T?nart <antoine.tenart@free-electrons.com>
> ---
>   arch/arm/mach-berlin/Kconfig | 1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/mach-berlin/Kconfig b/arch/arm/mach-berlin/Kconfig
> index 291f1cac6c3d..c31968712095 100644
> --- a/arch/arm/mach-berlin/Kconfig
> +++ b/arch/arm/mach-berlin/Kconfig
> @@ -28,6 +28,7 @@ config MACH_BERLIN_BG2Q
>   	select CPU_V7
>   	select HAVE_ARM_TWD if SMP
>   	select HAVE_SMP
> +	select ARCH_REQUIRE_GPIOLIB

Apart from Jisheng's comment, I think we can directly move it
into arch/arm/Kconfig's MACH_BERLIN directly?

Sebastian

>   endmenu
>
>

Re: [PATCH 2/2] ARM: dts: berlin: add GPIO nodes for the BG2Q

[Sebastian Hesselbarth]

On 04/15/2014 10:07 AM, Antoine Ténart wrote:
> The Marvell Berlin BG2Q has 6 GPIO ports compatible with the snps,dw-apb-gpio
> driver. This patch add the corresponding device tree nodes.
>
> Signed-off-by: Antoine Ténart <antoine.tenart@free-electrons.com>
> ---
>   arch/arm/boot/dts/berlin2q.dtsi | 102 ++++++++++++++++++++++++++++++++++++++++
>   1 file changed, 102 insertions(+)
>
> diff --git a/arch/arm/boot/dts/berlin2q.dtsi b/arch/arm/boot/dts/berlin2q.dtsi
> index e6e556055dfc..b2625f896bc5 100644
> --- a/arch/arm/boot/dts/berlin2q.dtsi
> +++ b/arch/arm/boot/dts/berlin2q.dtsi
> @@ -109,6 +109,78 @@
>   			ranges = <0 0xe80000 0x10000>;
>   			interrupt-parent = <&aic>;
>
> +			gpio0: gpio@0400 {
> +				compatible = "snps,dw-apb-gpio";
> +				reg = <0x0400 0x400>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				porta: gpio-controller@0 {

ePAPR recommended name is even more generic, i.e. "gpio". If
that clashed in any way with other numbered names, I suggest
to rename to "gpio-port" as actually the controller is the
parent node and this represents one port (in the nomenclature
of DW-APB-GPIO).

> +					compatible = "snps,dw-apb-gpio-port";
> +					gpio-controller;
> +					#gpio-cells = <2>;
> +					snps,nr-gpios = <32>;

32 gpio pins for each of the 6 GPIO controllers? Either BG2Q is a GPIO
beast or it is a mistake :P

Can you please double-check?

I am fine with using nr-gpios property now, but I guess BG2Q also
has that CONFIG[1,2] registers to actually read out the features
synthesized in? If I find some time, I'll prepare a patch for
dw-apb-gpio to exploit that (optional) information instead of
using nr-gpios.

Otherwise,

Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>

> +					reg = <0>;
> +					interrupt-controller;
> +					#interrupt-cells = <2>;
> +					interrupts = <0>;
> +				};
> +			};
> +
> +			gpio1: gpio@0800 {
> +				compatible = "snps,dw-apb-gpio";
> +				reg = <0x0800 0x400>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				portb: gpio-controller@1 {
> +					compatible = "snps,dw-apb-gpio-port";
> +					gpio-controller;
> +					#gpio-cells = <2>;
> +					snps,nr-gpios = <32>;
> +					reg = <0>;
> +					interrupt-controller;
> +					#interrupt-cells = <2>;
> +					interrupts = <1>;
> +				};
> +			};
> +
> +			gpio2: gpio@0c00 {
> +				compatible = "snps,dw-apb-gpio";
> +				reg = <0x0c00 0x400>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				portc: gpio-controller@2 {
> +					compatible = "snps,dw-apb-gpio-port";
> +					gpio-controller;
> +					#gpio-cells = <2>;
> +					snps,nr-gpios = <32>;
> +					reg = <0>;
> +					interrupt-controller;
> +					#interrupt-cells = <2>;
> +					interrupts = <2>;
> +				};
> +			};
> +
> +			gpio3: gpio@1000 {
> +				compatible = "snps,dw-apb-gpio";
> +				reg = <0x1000 0x400>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				portd: gpio-controller@3 {
> +					compatible = "snps,dw-apb-gpio-port";
> +					gpio-controller;
> +					#gpio-cells = <2>;
> +					snps,nr-gpios = <32>;
> +					reg = <0>;
> +					interrupt-controller;
> +					#interrupt-cells = <2>;
> +					interrupts = <3>;
> +				};
> +			};
> +
>   			timer0: timer@2c00 {
>   				compatible = "snps,dw-apb-timer";
>   				reg = <0x2c00 0x14>;
> @@ -181,6 +253,36 @@
>   				interrupt-parent = <&gic>;
>   				interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
>   			};
> +
> +			gpio4: gpio@5000 {
> +				compatible = "snps,dw-apb-gpio";
> +				reg = <0x5000 0x400>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				porte: gpio-controller@4 {
> +					compatible = "snps,dw-apb-gpio-port";
> +					gpio-controller;
> +					#gpio-cells = <2>;
> +					snps,nr-gpios = <32>;
> +					reg = <0>;
> +				};
> +			};
> +
> +			gpio5: gpio@c000 {
> +				compatible = "snps,dw-apb-gpio";
> +				reg = <0xc000 0x400>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				portf: gpio-controller@5 {
> +					compatible = "snps,dw-apb-gpio-port";
> +					gpio-controller;
> +					#gpio-cells = <2>;
> +					snps,nr-gpios = <32>;
> +					reg = <0>;
> +				};
> +			};
>   		};
>
>   		pinctrl: pinctrl@0 {
>

Re: [PATCH 2/2] ARM: dts: berlin: add GPIO nodes for the BG2Q

[Sebastian Hesselbarth]

On 04/15/2014 10:07 AM, Antoine Ténart wrote:
> The Marvell Berlin BG2Q has 6 GPIO ports compatible with the snps,dw-apb-gpio
> driver. This patch add the corresponding device tree nodes.
>
> Signed-off-by: Antoine Ténart <antoine.tenart-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
> ---
>   arch/arm/boot/dts/berlin2q.dtsi | 102 ++++++++++++++++++++++++++++++++++++++++
>   1 file changed, 102 insertions(+)
>
> diff --git a/arch/arm/boot/dts/berlin2q.dtsi b/arch/arm/boot/dts/berlin2q.dtsi
> index e6e556055dfc..b2625f896bc5 100644
> --- a/arch/arm/boot/dts/berlin2q.dtsi
> +++ b/arch/arm/boot/dts/berlin2q.dtsi
> @@ -109,6 +109,78 @@
>   			ranges = <0 0xe80000 0x10000>;
>   			interrupt-parent = <&aic>;
>
> +			gpio0: gpio@0400 {
> +				compatible = "snps,dw-apb-gpio";
> +				reg = <0x0400 0x400>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				porta: gpio-controller@0 {

ePAPR recommended name is even more generic, i.e. "gpio". If
that clashed in any way with other numbered names, I suggest
to rename to "gpio-port" as actually the controller is the
parent node and this represents one port (in the nomenclature
of DW-APB-GPIO).

> +					compatible = "snps,dw-apb-gpio-port";
> +					gpio-controller;
> +					#gpio-cells = <2>;
> +					snps,nr-gpios = <32>;

32 gpio pins for each of the 6 GPIO controllers? Either BG2Q is a GPIO
beast or it is a mistake :P

Can you please double-check?

I am fine with using nr-gpios property now, but I guess BG2Q also
has that CONFIG[1,2] registers to actually read out the features
synthesized in? If I find some time, I'll prepare a patch for
dw-apb-gpio to exploit that (optional) information instead of
using nr-gpios.

Otherwise,

Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

> +					reg = <0>;
> +					interrupt-controller;
> +					#interrupt-cells = <2>;
> +					interrupts = <0>;
> +				};
> +			};
> +
> +			gpio1: gpio@0800 {
> +				compatible = "snps,dw-apb-gpio";
> +				reg = <0x0800 0x400>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				portb: gpio-controller@1 {
> +					compatible = "snps,dw-apb-gpio-port";
> +					gpio-controller;
> +					#gpio-cells = <2>;
> +					snps,nr-gpios = <32>;
> +					reg = <0>;
> +					interrupt-controller;
> +					#interrupt-cells = <2>;
> +					interrupts = <1>;
> +				};
> +			};
> +
> +			gpio2: gpio@0c00 {
> +				compatible = "snps,dw-apb-gpio";
> +				reg = <0x0c00 0x400>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				portc: gpio-controller@2 {
> +					compatible = "snps,dw-apb-gpio-port";
> +					gpio-controller;
> +					#gpio-cells = <2>;
> +					snps,nr-gpios = <32>;
> +					reg = <0>;
> +					interrupt-controller;
> +					#interrupt-cells = <2>;
> +					interrupts = <2>;
> +				};
> +			};
> +
> +			gpio3: gpio@1000 {
> +				compatible = "snps,dw-apb-gpio";
> +				reg = <0x1000 0x400>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				portd: gpio-controller@3 {
> +					compatible = "snps,dw-apb-gpio-port";
> +					gpio-controller;
> +					#gpio-cells = <2>;
> +					snps,nr-gpios = <32>;
> +					reg = <0>;
> +					interrupt-controller;
> +					#interrupt-cells = <2>;
> +					interrupts = <3>;
> +				};
> +			};
> +
>   			timer0: timer@2c00 {
>   				compatible = "snps,dw-apb-timer";
>   				reg = <0x2c00 0x14>;
> @@ -181,6 +253,36 @@
>   				interrupt-parent = <&gic>;
>   				interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
>   			};
> +
> +			gpio4: gpio@5000 {
> +				compatible = "snps,dw-apb-gpio";
> +				reg = <0x5000 0x400>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				porte: gpio-controller@4 {
> +					compatible = "snps,dw-apb-gpio-port";
> +					gpio-controller;
> +					#gpio-cells = <2>;
> +					snps,nr-gpios = <32>;
> +					reg = <0>;
> +				};
> +			};
> +
> +			gpio5: gpio@c000 {
> +				compatible = "snps,dw-apb-gpio";
> +				reg = <0xc000 0x400>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				portf: gpio-controller@5 {
> +					compatible = "snps,dw-apb-gpio-port";
> +					gpio-controller;
> +					#gpio-cells = <2>;
> +					snps,nr-gpios = <32>;
> +					reg = <0>;
> +				};
> +			};
>   		};
>
>   		pinctrl: pinctrl@0 {
>

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[PATCH 2/2] ARM: dts: berlin: add GPIO nodes for the BG2Q

[Sebastian Hesselbarth]

On 04/15/2014 10:07 AM, Antoine T?nart wrote:
> The Marvell Berlin BG2Q has 6 GPIO ports compatible with the snps,dw-apb-gpio
> driver. This patch add the corresponding device tree nodes.
>
> Signed-off-by: Antoine T?nart <antoine.tenart@free-electrons.com>
> ---
>   arch/arm/boot/dts/berlin2q.dtsi | 102 ++++++++++++++++++++++++++++++++++++++++
>   1 file changed, 102 insertions(+)
>
> diff --git a/arch/arm/boot/dts/berlin2q.dtsi b/arch/arm/boot/dts/berlin2q.dtsi
> index e6e556055dfc..b2625f896bc5 100644
> --- a/arch/arm/boot/dts/berlin2q.dtsi
> +++ b/arch/arm/boot/dts/berlin2q.dtsi
> @@ -109,6 +109,78 @@
>   			ranges = <0 0xe80000 0x10000>;
>   			interrupt-parent = <&aic>;
>
> +			gpio0: gpio at 0400 {
> +				compatible = "snps,dw-apb-gpio";
> +				reg = <0x0400 0x400>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				porta: gpio-controller at 0 {

ePAPR recommended name is even more generic, i.e. "gpio". If
that clashed in any way with other numbered names, I suggest
to rename to "gpio-port" as actually the controller is the
parent node and this represents one port (in the nomenclature
of DW-APB-GPIO).

> +					compatible = "snps,dw-apb-gpio-port";
> +					gpio-controller;
> +					#gpio-cells = <2>;
> +					snps,nr-gpios = <32>;

32 gpio pins for each of the 6 GPIO controllers? Either BG2Q is a GPIO
beast or it is a mistake :P

Can you please double-check?

I am fine with using nr-gpios property now, but I guess BG2Q also
has that CONFIG[1,2] registers to actually read out the features
synthesized in? If I find some time, I'll prepare a patch for
dw-apb-gpio to exploit that (optional) information instead of
using nr-gpios.

Otherwise,

Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>

> +					reg = <0>;
> +					interrupt-controller;
> +					#interrupt-cells = <2>;
> +					interrupts = <0>;
> +				};
> +			};
> +
> +			gpio1: gpio at 0800 {
> +				compatible = "snps,dw-apb-gpio";
> +				reg = <0x0800 0x400>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				portb: gpio-controller at 1 {
> +					compatible = "snps,dw-apb-gpio-port";
> +					gpio-controller;
> +					#gpio-cells = <2>;
> +					snps,nr-gpios = <32>;
> +					reg = <0>;
> +					interrupt-controller;
> +					#interrupt-cells = <2>;
> +					interrupts = <1>;
> +				};
> +			};
> +
> +			gpio2: gpio at 0c00 {
> +				compatible = "snps,dw-apb-gpio";
> +				reg = <0x0c00 0x400>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				portc: gpio-controller at 2 {
> +					compatible = "snps,dw-apb-gpio-port";
> +					gpio-controller;
> +					#gpio-cells = <2>;
> +					snps,nr-gpios = <32>;
> +					reg = <0>;
> +					interrupt-controller;
> +					#interrupt-cells = <2>;
> +					interrupts = <2>;
> +				};
> +			};
> +
> +			gpio3: gpio at 1000 {
> +				compatible = "snps,dw-apb-gpio";
> +				reg = <0x1000 0x400>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				portd: gpio-controller at 3 {
> +					compatible = "snps,dw-apb-gpio-port";
> +					gpio-controller;
> +					#gpio-cells = <2>;
> +					snps,nr-gpios = <32>;
> +					reg = <0>;
> +					interrupt-controller;
> +					#interrupt-cells = <2>;
> +					interrupts = <3>;
> +				};
> +			};
> +
>   			timer0: timer at 2c00 {
>   				compatible = "snps,dw-apb-timer";
>   				reg = <0x2c00 0x14>;
> @@ -181,6 +253,36 @@
>   				interrupt-parent = <&gic>;
>   				interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
>   			};
> +
> +			gpio4: gpio at 5000 {
> +				compatible = "snps,dw-apb-gpio";
> +				reg = <0x5000 0x400>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				porte: gpio-controller at 4 {
> +					compatible = "snps,dw-apb-gpio-port";
> +					gpio-controller;
> +					#gpio-cells = <2>;
> +					snps,nr-gpios = <32>;
> +					reg = <0>;
> +				};
> +			};
> +
> +			gpio5: gpio at c000 {
> +				compatible = "snps,dw-apb-gpio";
> +				reg = <0xc000 0x400>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				portf: gpio-controller at 5 {
> +					compatible = "snps,dw-apb-gpio-port";
> +					gpio-controller;
> +					#gpio-cells = <2>;
> +					snps,nr-gpios = <32>;
> +					reg = <0>;
> +				};
> +			};
>   		};
>
>   		pinctrl: pinctrl at 0 {
>

Re: [PATCH 1/2] ARM: berlin: add the LIBGPIO as a dependency for the BG2Q

[Antoine Ténart]

Hi Jisheng,

On Tue, Apr 15, 2014 at 05:07:50PM +0800, Jisheng Zhang wrote:
> On Tue, 15 Apr 2014 01:07:24 -0700
> Antoine Ténart <antoine.tenart@free-electrons.com> wrote:
[…]
> > diff --git a/arch/arm/mach-berlin/Kconfig b/arch/arm/mach-berlin/Kconfig
> > index 291f1cac6c3d..c31968712095 100644
> > --- a/arch/arm/mach-berlin/Kconfig
> > +++ b/arch/arm/mach-berlin/Kconfig
> > @@ -28,6 +28,7 @@ config MACH_BERLIN_BG2Q
> >  	select CPU_V7
> >  	select HAVE_ARM_TWD if SMP
> >  	select HAVE_SMP
> > +	select ARCH_REQUIRE_GPIOLIB
> 
> alphabetically sort.

You're right, will do.

Antoine

-- 
Antoine Ténart, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

Re: [PATCH 1/2] ARM: berlin: add the LIBGPIO as a dependency for the BG2Q

[Antoine Ténart]

Hi Jisheng,

On Tue, Apr 15, 2014 at 05:07:50PM +0800, Jisheng Zhang wrote:
> On Tue, 15 Apr 2014 01:07:24 -0700
> Antoine Ténart <antoine.tenart-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org> wrote:
[…]
> > diff --git a/arch/arm/mach-berlin/Kconfig b/arch/arm/mach-berlin/Kconfig
> > index 291f1cac6c3d..c31968712095 100644
> > --- a/arch/arm/mach-berlin/Kconfig
> > +++ b/arch/arm/mach-berlin/Kconfig
> > @@ -28,6 +28,7 @@ config MACH_BERLIN_BG2Q
> >  	select CPU_V7
> >  	select HAVE_ARM_TWD if SMP
> >  	select HAVE_SMP
> > +	select ARCH_REQUIRE_GPIOLIB
> 
> alphabetically sort.

You're right, will do.

Antoine

-- 
Antoine Ténart, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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[PATCH 1/2] ARM: berlin: add the LIBGPIO as a dependency for the BG2Q

[Antoine Ténart]

Hi Jisheng,

On Tue, Apr 15, 2014 at 05:07:50PM +0800, Jisheng Zhang wrote:
> On Tue, 15 Apr 2014 01:07:24 -0700
> Antoine T?nart <antoine.tenart@free-electrons.com> wrote:
[?]
> > diff --git a/arch/arm/mach-berlin/Kconfig b/arch/arm/mach-berlin/Kconfig
> > index 291f1cac6c3d..c31968712095 100644
> > --- a/arch/arm/mach-berlin/Kconfig
> > +++ b/arch/arm/mach-berlin/Kconfig
> > @@ -28,6 +28,7 @@ config MACH_BERLIN_BG2Q
> >  	select CPU_V7
> >  	select HAVE_ARM_TWD if SMP
> >  	select HAVE_SMP
> > +	select ARCH_REQUIRE_GPIOLIB
> 
> alphabetically sort.

You're right, will do.

Antoine

-- 
Antoine T?nart, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

Re: [PATCH 1/2] ARM: berlin: add the LIBGPIO as a dependency for the BG2Q

[Antoine Ténart]

Sebastian,

On Tue, Apr 15, 2014 at 11:16:49AM +0200, Sebastian Hesselbarth wrote:
> On 04/15/2014 10:07 AM, Antoine Ténart wrote:

[…]

> >diff --git a/arch/arm/mach-berlin/Kconfig b/arch/arm/mach-berlin/Kconfig
> >index 291f1cac6c3d..c31968712095 100644
> >--- a/arch/arm/mach-berlin/Kconfig
> >+++ b/arch/arm/mach-berlin/Kconfig
> >@@ -28,6 +28,7 @@ config MACH_BERLIN_BG2Q
> >  	select CPU_V7
> >  	select HAVE_ARM_TWD if SMP
> >  	select HAVE_SMP
> >+	select ARCH_REQUIRE_GPIOLIB
> 
> Apart from Jisheng's comment, I think we can directly move it
> into arch/arm/Kconfig's MACH_BERLIN directly?

I think so.

Antoine

-- 
Antoine Ténart, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

[PATCH 1/2] ARM: berlin: add the LIBGPIO as a dependency for the BG2Q

[Antoine Ténart]

Sebastian,

On Tue, Apr 15, 2014 at 11:16:49AM +0200, Sebastian Hesselbarth wrote:
> On 04/15/2014 10:07 AM, Antoine T?nart wrote:

[?]

> >diff --git a/arch/arm/mach-berlin/Kconfig b/arch/arm/mach-berlin/Kconfig
> >index 291f1cac6c3d..c31968712095 100644
> >--- a/arch/arm/mach-berlin/Kconfig
> >+++ b/arch/arm/mach-berlin/Kconfig
> >@@ -28,6 +28,7 @@ config MACH_BERLIN_BG2Q
> >  	select CPU_V7
> >  	select HAVE_ARM_TWD if SMP
> >  	select HAVE_SMP
> >+	select ARCH_REQUIRE_GPIOLIB
> 
> Apart from Jisheng's comment, I think we can directly move it
> into arch/arm/Kconfig's MACH_BERLIN directly?

I think so.

Antoine

-- 
Antoine T?nart, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

Re: [PATCH 2/2] ARM: dts: berlin: add GPIO nodes for the BG2Q

[Antoine Ténart]

Sebastian,

On Tue, Apr 15, 2014 at 11:23:03AM +0200, Sebastian Hesselbarth wrote:
> On 04/15/2014 10:07 AM, Antoine Ténart wrote:

[…]

> >diff --git a/arch/arm/boot/dts/berlin2q.dtsi b/arch/arm/boot/dts/berlin2q.dtsi
> >index e6e556055dfc..b2625f896bc5 100644
> >--- a/arch/arm/boot/dts/berlin2q.dtsi
> >+++ b/arch/arm/boot/dts/berlin2q.dtsi
> >@@ -109,6 +109,78 @@
> >  			ranges = <0 0xe80000 0x10000>;
> >  			interrupt-parent = <&aic>;
> >
> >+			gpio0: gpio@0400 {
> >+				compatible = "snps,dw-apb-gpio";
> >+				reg = <0x0400 0x400>;
> >+				#address-cells = <1>;
> >+				#size-cells = <0>;
> >+
> >+				porta: gpio-controller@0 {
> 
> ePAPR recommended name is even more generic, i.e. "gpio". If
> that clashed in any way with other numbered names, I suggest
> to rename to "gpio-port" as actually the controller is the
> parent node and this represents one port (in the nomenclature
> of DW-APB-GPIO).

I followed the dwapb GPIO binding documentation, but I think this is a good
idea. I'll update.

> >+					compatible = "snps,dw-apb-gpio-port";
> >+					gpio-controller;
> >+					#gpio-cells = <2>;
> >+					snps,nr-gpios = <32>;
> 
> 32 gpio pins for each of the 6 GPIO controllers? Either BG2Q is a GPIO
> beast or it is a mistake :P
> 
> Can you please double-check?

Maybe Jisheng can confirm this.

> I am fine with using nr-gpios property now, but I guess BG2Q also
> has that CONFIG[1,2] registers to actually read out the features
> synthesized in? If I find some time, I'll prepare a patch for
> dw-apb-gpio to exploit that (optional) information instead of
> using nr-gpios.

Maybe, that would be nice.


Antoine

> Otherwise,
> 
> Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
> 
> >+					reg = <0>;
> >+					interrupt-controller;
> >+					#interrupt-cells = <2>;
> >+					interrupts = <0>;
> >+				};
> >+			};
> >+
> >+			gpio1: gpio@0800 {
> >+				compatible = "snps,dw-apb-gpio";
> >+				reg = <0x0800 0x400>;
> >+				#address-cells = <1>;
> >+				#size-cells = <0>;
> >+
> >+				portb: gpio-controller@1 {
> >+					compatible = "snps,dw-apb-gpio-port";
> >+					gpio-controller;
> >+					#gpio-cells = <2>;
> >+					snps,nr-gpios = <32>;
> >+					reg = <0>;
> >+					interrupt-controller;
> >+					#interrupt-cells = <2>;
> >+					interrupts = <1>;
> >+				};
> >+			};
> >+
> >+			gpio2: gpio@0c00 {
> >+				compatible = "snps,dw-apb-gpio";
> >+				reg = <0x0c00 0x400>;
> >+				#address-cells = <1>;
> >+				#size-cells = <0>;
> >+
> >+				portc: gpio-controller@2 {
> >+					compatible = "snps,dw-apb-gpio-port";
> >+					gpio-controller;
> >+					#gpio-cells = <2>;
> >+					snps,nr-gpios = <32>;
> >+					reg = <0>;
> >+					interrupt-controller;
> >+					#interrupt-cells = <2>;
> >+					interrupts = <2>;
> >+				};
> >+			};
> >+
> >+			gpio3: gpio@1000 {
> >+				compatible = "snps,dw-apb-gpio";
> >+				reg = <0x1000 0x400>;
> >+				#address-cells = <1>;
> >+				#size-cells = <0>;
> >+
> >+				portd: gpio-controller@3 {
> >+					compatible = "snps,dw-apb-gpio-port";
> >+					gpio-controller;
> >+					#gpio-cells = <2>;
> >+					snps,nr-gpios = <32>;
> >+					reg = <0>;
> >+					interrupt-controller;
> >+					#interrupt-cells = <2>;
> >+					interrupts = <3>;
> >+				};
> >+			};
> >+
> >  			timer0: timer@2c00 {
> >  				compatible = "snps,dw-apb-timer";
> >  				reg = <0x2c00 0x14>;
> >@@ -181,6 +253,36 @@
> >  				interrupt-parent = <&gic>;
> >  				interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
> >  			};
> >+
> >+			gpio4: gpio@5000 {
> >+				compatible = "snps,dw-apb-gpio";
> >+				reg = <0x5000 0x400>;
> >+				#address-cells = <1>;
> >+				#size-cells = <0>;
> >+
> >+				porte: gpio-controller@4 {
> >+					compatible = "snps,dw-apb-gpio-port";
> >+					gpio-controller;
> >+					#gpio-cells = <2>;
> >+					snps,nr-gpios = <32>;
> >+					reg = <0>;
> >+				};
> >+			};
> >+
> >+			gpio5: gpio@c000 {
> >+				compatible = "snps,dw-apb-gpio";
> >+				reg = <0xc000 0x400>;
> >+				#address-cells = <1>;
> >+				#size-cells = <0>;
> >+
> >+				portf: gpio-controller@5 {
> >+					compatible = "snps,dw-apb-gpio-port";
> >+					gpio-controller;
> >+					#gpio-cells = <2>;
> >+					snps,nr-gpios = <32>;
> >+					reg = <0>;
> >+				};
> >+			};
> >  		};
> >
> >  		pinctrl: pinctrl@0 {
> >
> 

-- 
Antoine Ténart, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

Re: [PATCH 2/2] ARM: dts: berlin: add GPIO nodes for the BG2Q

[Antoine Ténart]

Sebastian,

On Tue, Apr 15, 2014 at 11:23:03AM +0200, Sebastian Hesselbarth wrote:
> On 04/15/2014 10:07 AM, Antoine Ténart wrote:

[…]

> >diff --git a/arch/arm/boot/dts/berlin2q.dtsi b/arch/arm/boot/dts/berlin2q.dtsi
> >index e6e556055dfc..b2625f896bc5 100644
> >--- a/arch/arm/boot/dts/berlin2q.dtsi
> >+++ b/arch/arm/boot/dts/berlin2q.dtsi
> >@@ -109,6 +109,78 @@
> >  			ranges = <0 0xe80000 0x10000>;
> >  			interrupt-parent = <&aic>;
> >
> >+			gpio0: gpio@0400 {
> >+				compatible = "snps,dw-apb-gpio";
> >+				reg = <0x0400 0x400>;
> >+				#address-cells = <1>;
> >+				#size-cells = <0>;
> >+
> >+				porta: gpio-controller@0 {
> 
> ePAPR recommended name is even more generic, i.e. "gpio". If
> that clashed in any way with other numbered names, I suggest
> to rename to "gpio-port" as actually the controller is the
> parent node and this represents one port (in the nomenclature
> of DW-APB-GPIO).

I followed the dwapb GPIO binding documentation, but I think this is a good
idea. I'll update.

> >+					compatible = "snps,dw-apb-gpio-port";
> >+					gpio-controller;
> >+					#gpio-cells = <2>;
> >+					snps,nr-gpios = <32>;
> 
> 32 gpio pins for each of the 6 GPIO controllers? Either BG2Q is a GPIO
> beast or it is a mistake :P
> 
> Can you please double-check?

Maybe Jisheng can confirm this.

> I am fine with using nr-gpios property now, but I guess BG2Q also
> has that CONFIG[1,2] registers to actually read out the features
> synthesized in? If I find some time, I'll prepare a patch for
> dw-apb-gpio to exploit that (optional) information instead of
> using nr-gpios.

Maybe, that would be nice.


Antoine

> Otherwise,
> 
> Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> 
> >+					reg = <0>;
> >+					interrupt-controller;
> >+					#interrupt-cells = <2>;
> >+					interrupts = <0>;
> >+				};
> >+			};
> >+
> >+			gpio1: gpio@0800 {
> >+				compatible = "snps,dw-apb-gpio";
> >+				reg = <0x0800 0x400>;
> >+				#address-cells = <1>;
> >+				#size-cells = <0>;
> >+
> >+				portb: gpio-controller@1 {
> >+					compatible = "snps,dw-apb-gpio-port";
> >+					gpio-controller;
> >+					#gpio-cells = <2>;
> >+					snps,nr-gpios = <32>;
> >+					reg = <0>;
> >+					interrupt-controller;
> >+					#interrupt-cells = <2>;
> >+					interrupts = <1>;
> >+				};
> >+			};
> >+
> >+			gpio2: gpio@0c00 {
> >+				compatible = "snps,dw-apb-gpio";
> >+				reg = <0x0c00 0x400>;
> >+				#address-cells = <1>;
> >+				#size-cells = <0>;
> >+
> >+				portc: gpio-controller@2 {
> >+					compatible = "snps,dw-apb-gpio-port";
> >+					gpio-controller;
> >+					#gpio-cells = <2>;
> >+					snps,nr-gpios = <32>;
> >+					reg = <0>;
> >+					interrupt-controller;
> >+					#interrupt-cells = <2>;
> >+					interrupts = <2>;
> >+				};
> >+			};
> >+
> >+			gpio3: gpio@1000 {
> >+				compatible = "snps,dw-apb-gpio";
> >+				reg = <0x1000 0x400>;
> >+				#address-cells = <1>;
> >+				#size-cells = <0>;
> >+
> >+				portd: gpio-controller@3 {
> >+					compatible = "snps,dw-apb-gpio-port";
> >+					gpio-controller;
> >+					#gpio-cells = <2>;
> >+					snps,nr-gpios = <32>;
> >+					reg = <0>;
> >+					interrupt-controller;
> >+					#interrupt-cells = <2>;
> >+					interrupts = <3>;
> >+				};
> >+			};
> >+
> >  			timer0: timer@2c00 {
> >  				compatible = "snps,dw-apb-timer";
> >  				reg = <0x2c00 0x14>;
> >@@ -181,6 +253,36 @@
> >  				interrupt-parent = <&gic>;
> >  				interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
> >  			};
> >+
> >+			gpio4: gpio@5000 {
> >+				compatible = "snps,dw-apb-gpio";
> >+				reg = <0x5000 0x400>;
> >+				#address-cells = <1>;
> >+				#size-cells = <0>;
> >+
> >+				porte: gpio-controller@4 {
> >+					compatible = "snps,dw-apb-gpio-port";
> >+					gpio-controller;
> >+					#gpio-cells = <2>;
> >+					snps,nr-gpios = <32>;
> >+					reg = <0>;
> >+				};
> >+			};
> >+
> >+			gpio5: gpio@c000 {
> >+				compatible = "snps,dw-apb-gpio";
> >+				reg = <0xc000 0x400>;
> >+				#address-cells = <1>;
> >+				#size-cells = <0>;
> >+
> >+				portf: gpio-controller@5 {
> >+					compatible = "snps,dw-apb-gpio-port";
> >+					gpio-controller;
> >+					#gpio-cells = <2>;
> >+					snps,nr-gpios = <32>;
> >+					reg = <0>;
> >+				};
> >+			};
> >  		};
> >
> >  		pinctrl: pinctrl@0 {
> >
> 

-- 
Antoine Ténart, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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[PATCH 2/2] ARM: dts: berlin: add GPIO nodes for the BG2Q

[Antoine Ténart]

Sebastian,

On Tue, Apr 15, 2014 at 11:23:03AM +0200, Sebastian Hesselbarth wrote:
> On 04/15/2014 10:07 AM, Antoine T?nart wrote:

[?]

> >diff --git a/arch/arm/boot/dts/berlin2q.dtsi b/arch/arm/boot/dts/berlin2q.dtsi
> >index e6e556055dfc..b2625f896bc5 100644
> >--- a/arch/arm/boot/dts/berlin2q.dtsi
> >+++ b/arch/arm/boot/dts/berlin2q.dtsi
> >@@ -109,6 +109,78 @@
> >  			ranges = <0 0xe80000 0x10000>;
> >  			interrupt-parent = <&aic>;
> >
> >+			gpio0: gpio at 0400 {
> >+				compatible = "snps,dw-apb-gpio";
> >+				reg = <0x0400 0x400>;
> >+				#address-cells = <1>;
> >+				#size-cells = <0>;
> >+
> >+				porta: gpio-controller at 0 {
> 
> ePAPR recommended name is even more generic, i.e. "gpio". If
> that clashed in any way with other numbered names, I suggest
> to rename to "gpio-port" as actually the controller is the
> parent node and this represents one port (in the nomenclature
> of DW-APB-GPIO).

I followed the dwapb GPIO binding documentation, but I think this is a good
idea. I'll update.

> >+					compatible = "snps,dw-apb-gpio-port";
> >+					gpio-controller;
> >+					#gpio-cells = <2>;
> >+					snps,nr-gpios = <32>;
> 
> 32 gpio pins for each of the 6 GPIO controllers? Either BG2Q is a GPIO
> beast or it is a mistake :P
> 
> Can you please double-check?

Maybe Jisheng can confirm this.

> I am fine with using nr-gpios property now, but I guess BG2Q also
> has that CONFIG[1,2] registers to actually read out the features
> synthesized in? If I find some time, I'll prepare a patch for
> dw-apb-gpio to exploit that (optional) information instead of
> using nr-gpios.

Maybe, that would be nice.


Antoine

> Otherwise,
> 
> Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
> 
> >+					reg = <0>;
> >+					interrupt-controller;
> >+					#interrupt-cells = <2>;
> >+					interrupts = <0>;
> >+				};
> >+			};
> >+
> >+			gpio1: gpio at 0800 {
> >+				compatible = "snps,dw-apb-gpio";
> >+				reg = <0x0800 0x400>;
> >+				#address-cells = <1>;
> >+				#size-cells = <0>;
> >+
> >+				portb: gpio-controller at 1 {
> >+					compatible = "snps,dw-apb-gpio-port";
> >+					gpio-controller;
> >+					#gpio-cells = <2>;
> >+					snps,nr-gpios = <32>;
> >+					reg = <0>;
> >+					interrupt-controller;
> >+					#interrupt-cells = <2>;
> >+					interrupts = <1>;
> >+				};
> >+			};
> >+
> >+			gpio2: gpio at 0c00 {
> >+				compatible = "snps,dw-apb-gpio";
> >+				reg = <0x0c00 0x400>;
> >+				#address-cells = <1>;
> >+				#size-cells = <0>;
> >+
> >+				portc: gpio-controller at 2 {
> >+					compatible = "snps,dw-apb-gpio-port";
> >+					gpio-controller;
> >+					#gpio-cells = <2>;
> >+					snps,nr-gpios = <32>;
> >+					reg = <0>;
> >+					interrupt-controller;
> >+					#interrupt-cells = <2>;
> >+					interrupts = <2>;
> >+				};
> >+			};
> >+
> >+			gpio3: gpio at 1000 {
> >+				compatible = "snps,dw-apb-gpio";
> >+				reg = <0x1000 0x400>;
> >+				#address-cells = <1>;
> >+				#size-cells = <0>;
> >+
> >+				portd: gpio-controller at 3 {
> >+					compatible = "snps,dw-apb-gpio-port";
> >+					gpio-controller;
> >+					#gpio-cells = <2>;
> >+					snps,nr-gpios = <32>;
> >+					reg = <0>;
> >+					interrupt-controller;
> >+					#interrupt-cells = <2>;
> >+					interrupts = <3>;
> >+				};
> >+			};
> >+
> >  			timer0: timer at 2c00 {
> >  				compatible = "snps,dw-apb-timer";
> >  				reg = <0x2c00 0x14>;
> >@@ -181,6 +253,36 @@
> >  				interrupt-parent = <&gic>;
> >  				interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
> >  			};
> >+
> >+			gpio4: gpio at 5000 {
> >+				compatible = "snps,dw-apb-gpio";
> >+				reg = <0x5000 0x400>;
> >+				#address-cells = <1>;
> >+				#size-cells = <0>;
> >+
> >+				porte: gpio-controller at 4 {
> >+					compatible = "snps,dw-apb-gpio-port";
> >+					gpio-controller;
> >+					#gpio-cells = <2>;
> >+					snps,nr-gpios = <32>;
> >+					reg = <0>;
> >+				};
> >+			};
> >+
> >+			gpio5: gpio at c000 {
> >+				compatible = "snps,dw-apb-gpio";
> >+				reg = <0xc000 0x400>;
> >+				#address-cells = <1>;
> >+				#size-cells = <0>;
> >+
> >+				portf: gpio-controller at 5 {
> >+					compatible = "snps,dw-apb-gpio-port";
> >+					gpio-controller;
> >+					#gpio-cells = <2>;
> >+					snps,nr-gpios = <32>;
> >+					reg = <0>;
> >+				};
> >+			};
> >  		};
> >
> >  		pinctrl: pinctrl at 0 {
> >
> 

-- 
Antoine T?nart, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

Re: [PATCH 2/2] ARM: dts: berlin: add GPIO nodes for the BG2Q

[Jisheng Zhang]

Hi Sebastian,

On Tue, 15 Apr 2014 02:23:03 -0700
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> wrote:

> On 04/15/2014 10:07 AM, Antoine Ténart wrote:
> > The Marvell Berlin BG2Q has 6 GPIO ports compatible with the
> > snps,dw-apb-gpio driver. This patch add the corresponding device tree
> > nodes.
> >
> > Signed-off-by: Antoine Ténart <antoine.tenart@free-electrons.com>
> > ---
> >   arch/arm/boot/dts/berlin2q.dtsi | 102
> > ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 102 insertions(+)
> >
> > diff --git a/arch/arm/boot/dts/berlin2q.dtsi
> > b/arch/arm/boot/dts/berlin2q.dtsi index e6e556055dfc..b2625f896bc5 100644
> > --- a/arch/arm/boot/dts/berlin2q.dtsi
> > +++ b/arch/arm/boot/dts/berlin2q.dtsi
> > @@ -109,6 +109,78 @@
> >   			ranges = <0 0xe80000 0x10000>;
> >   			interrupt-parent = <&aic>;
> >
> > +			gpio0: gpio@0400 {
> > +				compatible = "snps,dw-apb-gpio";
> > +				reg = <0x0400 0x400>;
> > +				#address-cells = <1>;
> > +				#size-cells = <0>;
> > +
> > +				porta: gpio-controller@0 {
> 
> ePAPR recommended name is even more generic, i.e. "gpio". If
> that clashed in any way with other numbered names, I suggest
> to rename to "gpio-port" as actually the controller is the
> parent node and this represents one port (in the nomenclature
> of DW-APB-GPIO).
> 
> > +					compatible =
> > "snps,dw-apb-gpio-port";
> > +					gpio-controller;
> > +					#gpio-cells = <2>;
> > +					snps,nr-gpios = <32>;
> 
> 32 gpio pins for each of the 6 GPIO controllers? Either BG2Q is a GPIO

Yes, BG2Q support 32 pins every port

> beast or it is a mistake :P
> 
> Can you please double-check?
> 
> I am fine with using nr-gpios property now, but I guess BG2Q also
> has that CONFIG[1,2] registers to actually read out the features
> synthesized in? If I find some time, I'll prepare a patch for
> dw-apb-gpio to exploit that (optional) information instead of
> using nr-gpios.

The problem is CONFIG1/2 registers don't exist on some versions.
For example, the version used in BG2/BG2CD. So nr-gpio is necessary
if we want to support these versions.

Thanks,
Jisheng

Re: [PATCH 2/2] ARM: dts: berlin: add GPIO nodes for the BG2Q

[Jisheng Zhang]

Hi Sebastian,

On Tue, 15 Apr 2014 02:23:03 -0700
Sebastian Hesselbarth <sebastian.hesselbarth-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:

> On 04/15/2014 10:07 AM, Antoine Ténart wrote:
> > The Marvell Berlin BG2Q has 6 GPIO ports compatible with the
> > snps,dw-apb-gpio driver. This patch add the corresponding device tree
> > nodes.
> >
> > Signed-off-by: Antoine Ténart <antoine.tenart@free-electrons.com>
> > ---
> >   arch/arm/boot/dts/berlin2q.dtsi | 102
> > ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 102 insertions(+)
> >
> > diff --git a/arch/arm/boot/dts/berlin2q.dtsi
> > b/arch/arm/boot/dts/berlin2q.dtsi index e6e556055dfc..b2625f896bc5 100644
> > --- a/arch/arm/boot/dts/berlin2q.dtsi
> > +++ b/arch/arm/boot/dts/berlin2q.dtsi
> > @@ -109,6 +109,78 @@
> >   			ranges = <0 0xe80000 0x10000>;
> >   			interrupt-parent = <&aic>;
> >
> > +			gpio0: gpio@0400 {
> > +				compatible = "snps,dw-apb-gpio";
> > +				reg = <0x0400 0x400>;
> > +				#address-cells = <1>;
> > +				#size-cells = <0>;
> > +
> > +				porta: gpio-controller@0 {
> 
> ePAPR recommended name is even more generic, i.e. "gpio". If
> that clashed in any way with other numbered names, I suggest
> to rename to "gpio-port" as actually the controller is the
> parent node and this represents one port (in the nomenclature
> of DW-APB-GPIO).
> 
> > +					compatible =
> > "snps,dw-apb-gpio-port";
> > +					gpio-controller;
> > +					#gpio-cells = <2>;
> > +					snps,nr-gpios = <32>;
> 
> 32 gpio pins for each of the 6 GPIO controllers? Either BG2Q is a GPIO

Yes, BG2Q support 32 pins every port

> beast or it is a mistake :P
> 
> Can you please double-check?
> 
> I am fine with using nr-gpios property now, but I guess BG2Q also
> has that CONFIG[1,2] registers to actually read out the features
> synthesized in? If I find some time, I'll prepare a patch for
> dw-apb-gpio to exploit that (optional) information instead of
> using nr-gpios.

The problem is CONFIG1/2 registers don't exist on some versions.
For example, the version used in BG2/BG2CD. So nr-gpio is necessary
if we want to support these versions.

Thanks,
Jisheng
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[PATCH 2/2] ARM: dts: berlin: add GPIO nodes for the BG2Q

[Jisheng Zhang]

Hi Sebastian,

On Tue, 15 Apr 2014 02:23:03 -0700
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> wrote:

> On 04/15/2014 10:07 AM, Antoine T?nart wrote:
> > The Marvell Berlin BG2Q has 6 GPIO ports compatible with the
> > snps,dw-apb-gpio driver. This patch add the corresponding device tree
> > nodes.
> >
> > Signed-off-by: Antoine T?nart <antoine.tenart@free-electrons.com>
> > ---
> >   arch/arm/boot/dts/berlin2q.dtsi | 102
> > ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 102 insertions(+)
> >
> > diff --git a/arch/arm/boot/dts/berlin2q.dtsi
> > b/arch/arm/boot/dts/berlin2q.dtsi index e6e556055dfc..b2625f896bc5 100644
> > --- a/arch/arm/boot/dts/berlin2q.dtsi
> > +++ b/arch/arm/boot/dts/berlin2q.dtsi
> > @@ -109,6 +109,78 @@
> >   			ranges = <0 0xe80000 0x10000>;
> >   			interrupt-parent = <&aic>;
> >
> > +			gpio0: gpio at 0400 {
> > +				compatible = "snps,dw-apb-gpio";
> > +				reg = <0x0400 0x400>;
> > +				#address-cells = <1>;
> > +				#size-cells = <0>;
> > +
> > +				porta: gpio-controller at 0 {
> 
> ePAPR recommended name is even more generic, i.e. "gpio". If
> that clashed in any way with other numbered names, I suggest
> to rename to "gpio-port" as actually the controller is the
> parent node and this represents one port (in the nomenclature
> of DW-APB-GPIO).
> 
> > +					compatible =
> > "snps,dw-apb-gpio-port";
> > +					gpio-controller;
> > +					#gpio-cells = <2>;
> > +					snps,nr-gpios = <32>;
> 
> 32 gpio pins for each of the 6 GPIO controllers? Either BG2Q is a GPIO

Yes, BG2Q support 32 pins every port

> beast or it is a mistake :P
> 
> Can you please double-check?
> 
> I am fine with using nr-gpios property now, but I guess BG2Q also
> has that CONFIG[1,2] registers to actually read out the features
> synthesized in? If I find some time, I'll prepare a patch for
> dw-apb-gpio to exploit that (optional) information instead of
> using nr-gpios.

The problem is CONFIG1/2 registers don't exist on some versions.
For example, the version used in BG2/BG2CD. So nr-gpio is necessary
if we want to support these versions.

Thanks,
Jisheng

Re: [PATCH 2/2] ARM: dts: berlin: add GPIO nodes for the BG2Q

[Sebastian Hesselbarth]

On 04/15/2014 12:00 PM, Jisheng Zhang wrote:
> On Tue, 15 Apr 2014 02:23:03 -0700
> Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> wrote:
>> On 04/15/2014 10:07 AM, Antoine Ténart wrote:
>>> The Marvell Berlin BG2Q has 6 GPIO ports compatible with the
>>> snps,dw-apb-gpio driver. This patch add the corresponding device tree
>>> nodes.
>>>
>>> Signed-off-by: Antoine Ténart <antoine.tenart@free-electrons.com>
>>> ---
>>>    arch/arm/boot/dts/berlin2q.dtsi | 102
>>> ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 102 insertions(+)
>>>
>>> diff --git a/arch/arm/boot/dts/berlin2q.dtsi
>>> b/arch/arm/boot/dts/berlin2q.dtsi index e6e556055dfc..b2625f896bc5 100644
>>> --- a/arch/arm/boot/dts/berlin2q.dtsi
>>> +++ b/arch/arm/boot/dts/berlin2q.dtsi
[...]
>>> +					compatible =
>>> "snps,dw-apb-gpio-port";
>>> +					gpio-controller;
>>> +					#gpio-cells = <2>;
>>> +					snps,nr-gpios = <32>;
>>
>> 32 gpio pins for each of the 6 GPIO controllers? Either BG2Q is a GPIO
>
> Yes, BG2Q support 32 pins every port

Wow. Thanks for confirming this!

>> I am fine with using nr-gpios property now, but I guess BG2Q also
>> has that CONFIG[1,2] registers to actually read out the features
>> synthesized in? If I find some time, I'll prepare a patch for
>> dw-apb-gpio to exploit that (optional) information instead of
>> using nr-gpios.
>
> The problem is CONFIG1/2 registers don't exist on some versions.
> For example, the version used in BG2/BG2CD. So nr-gpio is necessary
> if we want to support these versions.

Hmm, are you sure about BG2? I remember reading it and it contains
sane values. Anyway, a proper patch for dw-apb-gpio would include
checking for sane (e.g. non-zero) values. And nr-gpios will always
stay as fall-back just because e.g. sunxi does not have the CONFIG
registers.

Sebastian

Re: [PATCH 2/2] ARM: dts: berlin: add GPIO nodes for the BG2Q

[Sebastian Hesselbarth]

On 04/15/2014 12:00 PM, Jisheng Zhang wrote:
> On Tue, 15 Apr 2014 02:23:03 -0700
> Sebastian Hesselbarth <sebastian.hesselbarth-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>> On 04/15/2014 10:07 AM, Antoine Ténart wrote:
>>> The Marvell Berlin BG2Q has 6 GPIO ports compatible with the
>>> snps,dw-apb-gpio driver. This patch add the corresponding device tree
>>> nodes.
>>>
>>> Signed-off-by: Antoine Ténart <antoine.tenart@free-electrons.com>
>>> ---
>>>    arch/arm/boot/dts/berlin2q.dtsi | 102
>>> ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 102 insertions(+)
>>>
>>> diff --git a/arch/arm/boot/dts/berlin2q.dtsi
>>> b/arch/arm/boot/dts/berlin2q.dtsi index e6e556055dfc..b2625f896bc5 100644
>>> --- a/arch/arm/boot/dts/berlin2q.dtsi
>>> +++ b/arch/arm/boot/dts/berlin2q.dtsi
[...]
>>> +					compatible =
>>> "snps,dw-apb-gpio-port";
>>> +					gpio-controller;
>>> +					#gpio-cells = <2>;
>>> +					snps,nr-gpios = <32>;
>>
>> 32 gpio pins for each of the 6 GPIO controllers? Either BG2Q is a GPIO
>
> Yes, BG2Q support 32 pins every port

Wow. Thanks for confirming this!

>> I am fine with using nr-gpios property now, but I guess BG2Q also
>> has that CONFIG[1,2] registers to actually read out the features
>> synthesized in? If I find some time, I'll prepare a patch for
>> dw-apb-gpio to exploit that (optional) information instead of
>> using nr-gpios.
>
> The problem is CONFIG1/2 registers don't exist on some versions.
> For example, the version used in BG2/BG2CD. So nr-gpio is necessary
> if we want to support these versions.

Hmm, are you sure about BG2? I remember reading it and it contains
sane values. Anyway, a proper patch for dw-apb-gpio would include
checking for sane (e.g. non-zero) values. And nr-gpios will always
stay as fall-back just because e.g. sunxi does not have the CONFIG
registers.

Sebastian

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[PATCH 2/2] ARM: dts: berlin: add GPIO nodes for the BG2Q

[Sebastian Hesselbarth]

On 04/15/2014 12:00 PM, Jisheng Zhang wrote:
> On Tue, 15 Apr 2014 02:23:03 -0700
> Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> wrote:
>> On 04/15/2014 10:07 AM, Antoine T?nart wrote:
>>> The Marvell Berlin BG2Q has 6 GPIO ports compatible with the
>>> snps,dw-apb-gpio driver. This patch add the corresponding device tree
>>> nodes.
>>>
>>> Signed-off-by: Antoine T?nart <antoine.tenart@free-electrons.com>
>>> ---
>>>    arch/arm/boot/dts/berlin2q.dtsi | 102
>>> ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 102 insertions(+)
>>>
>>> diff --git a/arch/arm/boot/dts/berlin2q.dtsi
>>> b/arch/arm/boot/dts/berlin2q.dtsi index e6e556055dfc..b2625f896bc5 100644
>>> --- a/arch/arm/boot/dts/berlin2q.dtsi
>>> +++ b/arch/arm/boot/dts/berlin2q.dtsi
[...]
>>> +					compatible =
>>> "snps,dw-apb-gpio-port";
>>> +					gpio-controller;
>>> +					#gpio-cells = <2>;
>>> +					snps,nr-gpios = <32>;
>>
>> 32 gpio pins for each of the 6 GPIO controllers? Either BG2Q is a GPIO
>
> Yes, BG2Q support 32 pins every port

Wow. Thanks for confirming this!

>> I am fine with using nr-gpios property now, but I guess BG2Q also
>> has that CONFIG[1,2] registers to actually read out the features
>> synthesized in? If I find some time, I'll prepare a patch for
>> dw-apb-gpio to exploit that (optional) information instead of
>> using nr-gpios.
>
> The problem is CONFIG1/2 registers don't exist on some versions.
> For example, the version used in BG2/BG2CD. So nr-gpio is necessary
> if we want to support these versions.

Hmm, are you sure about BG2? I remember reading it and it contains
sane values. Anyway, a proper patch for dw-apb-gpio would include
checking for sane (e.g. non-zero) values. And nr-gpios will always
stay as fall-back just because e.g. sunxi does not have the CONFIG
registers.

Sebastian

Re: [PATCH 2/2] ARM: dts: berlin: add GPIO nodes for the BG2Q

[Alexandre Belloni]

On 15/04/2014 at 12:26:11 +0200, Sebastian Hesselbarth wrote :
> On 04/15/2014 12:00 PM, Jisheng Zhang wrote:
> >On Tue, 15 Apr 2014 02:23:03 -0700
> >Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> wrote:
> >>On 04/15/2014 10:07 AM, Antoine Ténart wrote:
> >>>The Marvell Berlin BG2Q has 6 GPIO ports compatible with the
> >>>snps,dw-apb-gpio driver. This patch add the corresponding device tree
> >>>nodes.
> >>>
> >>>Signed-off-by: Antoine Ténart <antoine.tenart@free-electrons.com>
> >>>---
> >>>   arch/arm/boot/dts/berlin2q.dtsi | 102
> >>>++++++++++++++++++++++++++++++++++++++++ 1 file changed, 102 insertions(+)
> >>>
> >>>diff --git a/arch/arm/boot/dts/berlin2q.dtsi
> >>>b/arch/arm/boot/dts/berlin2q.dtsi index e6e556055dfc..b2625f896bc5 100644
> >>>--- a/arch/arm/boot/dts/berlin2q.dtsi
> >>>+++ b/arch/arm/boot/dts/berlin2q.dtsi
> [...]
> >>>+					compatible =
> >>>"snps,dw-apb-gpio-port";
> >>>+					gpio-controller;
> >>>+					#gpio-cells = <2>;
> >>>+					snps,nr-gpios = <32>;
> >>
> >>32 gpio pins for each of the 6 GPIO controllers? Either BG2Q is a GPIO
> >
> >Yes, BG2Q support 32 pins every port
> 
> Wow. Thanks for confirming this!
> 
> >>I am fine with using nr-gpios property now, but I guess BG2Q also
> >>has that CONFIG[1,2] registers to actually read out the features
> >>synthesized in? If I find some time, I'll prepare a patch for
> >>dw-apb-gpio to exploit that (optional) information instead of
> >>using nr-gpios.
> >
> >The problem is CONFIG1/2 registers don't exist on some versions.
> >For example, the version used in BG2/BG2CD. So nr-gpio is necessary
> >if we want to support these versions.
> 
> Hmm, are you sure about BG2? I remember reading it and it contains
> sane values. Anyway, a proper patch for dw-apb-gpio would include
> checking for sane (e.g. non-zero) values. And nr-gpios will always
> stay as fall-back just because e.g. sunxi does not have the CONFIG
> registers.
> 

Shouldn't that be use nr-gpios and if not available, read the CONFIG
registers? Else, what about bogus registers ?

-- 
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

Re: [PATCH 2/2] ARM: dts: berlin: add GPIO nodes for the BG2Q

[Alexandre Belloni]

On 15/04/2014 at 12:26:11 +0200, Sebastian Hesselbarth wrote :
> On 04/15/2014 12:00 PM, Jisheng Zhang wrote:
> >On Tue, 15 Apr 2014 02:23:03 -0700
> >Sebastian Hesselbarth <sebastian.hesselbarth-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> >>On 04/15/2014 10:07 AM, Antoine Ténart wrote:
> >>>The Marvell Berlin BG2Q has 6 GPIO ports compatible with the
> >>>snps,dw-apb-gpio driver. This patch add the corresponding device tree
> >>>nodes.
> >>>
> >>>Signed-off-by: Antoine Ténart <antoine.tenart-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
> >>>---
> >>>   arch/arm/boot/dts/berlin2q.dtsi | 102
> >>>++++++++++++++++++++++++++++++++++++++++ 1 file changed, 102 insertions(+)
> >>>
> >>>diff --git a/arch/arm/boot/dts/berlin2q.dtsi
> >>>b/arch/arm/boot/dts/berlin2q.dtsi index e6e556055dfc..b2625f896bc5 100644
> >>>--- a/arch/arm/boot/dts/berlin2q.dtsi
> >>>+++ b/arch/arm/boot/dts/berlin2q.dtsi
> [...]
> >>>+					compatible =
> >>>"snps,dw-apb-gpio-port";
> >>>+					gpio-controller;
> >>>+					#gpio-cells = <2>;
> >>>+					snps,nr-gpios = <32>;
> >>
> >>32 gpio pins for each of the 6 GPIO controllers? Either BG2Q is a GPIO
> >
> >Yes, BG2Q support 32 pins every port
> 
> Wow. Thanks for confirming this!
> 
> >>I am fine with using nr-gpios property now, but I guess BG2Q also
> >>has that CONFIG[1,2] registers to actually read out the features
> >>synthesized in? If I find some time, I'll prepare a patch for
> >>dw-apb-gpio to exploit that (optional) information instead of
> >>using nr-gpios.
> >
> >The problem is CONFIG1/2 registers don't exist on some versions.
> >For example, the version used in BG2/BG2CD. So nr-gpio is necessary
> >if we want to support these versions.
> 
> Hmm, are you sure about BG2? I remember reading it and it contains
> sane values. Anyway, a proper patch for dw-apb-gpio would include
> checking for sane (e.g. non-zero) values. And nr-gpios will always
> stay as fall-back just because e.g. sunxi does not have the CONFIG
> registers.
> 

Shouldn't that be use nr-gpios and if not available, read the CONFIG
registers? Else, what about bogus registers ?

-- 
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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[PATCH 2/2] ARM: dts: berlin: add GPIO nodes for the BG2Q

[Alexandre Belloni]

On 15/04/2014 at 12:26:11 +0200, Sebastian Hesselbarth wrote :
> On 04/15/2014 12:00 PM, Jisheng Zhang wrote:
> >On Tue, 15 Apr 2014 02:23:03 -0700
> >Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> wrote:
> >>On 04/15/2014 10:07 AM, Antoine T?nart wrote:
> >>>The Marvell Berlin BG2Q has 6 GPIO ports compatible with the
> >>>snps,dw-apb-gpio driver. This patch add the corresponding device tree
> >>>nodes.
> >>>
> >>>Signed-off-by: Antoine T?nart <antoine.tenart@free-electrons.com>
> >>>---
> >>>   arch/arm/boot/dts/berlin2q.dtsi | 102
> >>>++++++++++++++++++++++++++++++++++++++++ 1 file changed, 102 insertions(+)
> >>>
> >>>diff --git a/arch/arm/boot/dts/berlin2q.dtsi
> >>>b/arch/arm/boot/dts/berlin2q.dtsi index e6e556055dfc..b2625f896bc5 100644
> >>>--- a/arch/arm/boot/dts/berlin2q.dtsi
> >>>+++ b/arch/arm/boot/dts/berlin2q.dtsi
> [...]
> >>>+					compatible =
> >>>"snps,dw-apb-gpio-port";
> >>>+					gpio-controller;
> >>>+					#gpio-cells = <2>;
> >>>+					snps,nr-gpios = <32>;
> >>
> >>32 gpio pins for each of the 6 GPIO controllers? Either BG2Q is a GPIO
> >
> >Yes, BG2Q support 32 pins every port
> 
> Wow. Thanks for confirming this!
> 
> >>I am fine with using nr-gpios property now, but I guess BG2Q also
> >>has that CONFIG[1,2] registers to actually read out the features
> >>synthesized in? If I find some time, I'll prepare a patch for
> >>dw-apb-gpio to exploit that (optional) information instead of
> >>using nr-gpios.
> >
> >The problem is CONFIG1/2 registers don't exist on some versions.
> >For example, the version used in BG2/BG2CD. So nr-gpio is necessary
> >if we want to support these versions.
> 
> Hmm, are you sure about BG2? I remember reading it and it contains
> sane values. Anyway, a proper patch for dw-apb-gpio would include
> checking for sane (e.g. non-zero) values. And nr-gpios will always
> stay as fall-back just because e.g. sunxi does not have the CONFIG
> registers.
> 

Shouldn't that be use nr-gpios and if not available, read the CONFIG
registers? Else, what about bogus registers ?

-- 
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

Re: [PATCH 2/2] ARM: dts: berlin: add GPIO nodes for the BG2Q

[Sebastian Hesselbarth]

On 04/15/2014 01:48 PM, Alexandre Belloni wrote:
> On 15/04/2014 at 12:26:11 +0200, Sebastian Hesselbarth wrote :
>> On 04/15/2014 12:00 PM, Jisheng Zhang wrote:
>>> On Tue, 15 Apr 2014 02:23:03 -0700
>>> Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> wrote:
>>>> I am fine with using nr-gpios property now, but I guess BG2Q also
>>>> has that CONFIG[1,2] registers to actually read out the features
>>>> synthesized in? If I find some time, I'll prepare a patch for
>>>> dw-apb-gpio to exploit that (optional) information instead of
>>>> using nr-gpios.
>>>
>>> The problem is CONFIG1/2 registers don't exist on some versions.
>>> For example, the version used in BG2/BG2CD. So nr-gpio is necessary
>>> if we want to support these versions.
>>
>> Hmm, are you sure about BG2? I remember reading it and it contains
>> sane values. Anyway, a proper patch for dw-apb-gpio would include
>> checking for sane (e.g. non-zero) values. And nr-gpios will always
>> stay as fall-back just because e.g. sunxi does not have the CONFIG
>> registers.
>
> Shouldn't that be use nr-gpios and if not available, read the CONFIG
> registers? Else, what about bogus registers ?

Probably, it is a better idea to only look for CONFIG registers if
nr-gpios is not set. Anyway, I'll really have to find more time first ;)

Sebastian

Re: [PATCH 2/2] ARM: dts: berlin: add GPIO nodes for the BG2Q

[Sebastian Hesselbarth]

On 04/15/2014 01:48 PM, Alexandre Belloni wrote:
> On 15/04/2014 at 12:26:11 +0200, Sebastian Hesselbarth wrote :
>> On 04/15/2014 12:00 PM, Jisheng Zhang wrote:
>>> On Tue, 15 Apr 2014 02:23:03 -0700
>>> Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> wrote:
>>>> I am fine with using nr-gpios property now, but I guess BG2Q also
>>>> has that CONFIG[1,2] registers to actually read out the features
>>>> synthesized in? If I find some time, I'll prepare a patch for
>>>> dw-apb-gpio to exploit that (optional) information instead of
>>>> using nr-gpios.
>>>
>>> The problem is CONFIG1/2 registers don't exist on some versions.
>>> For example, the version used in BG2/BG2CD. So nr-gpio is necessary
>>> if we want to support these versions.
>>
>> Hmm, are you sure about BG2? I remember reading it and it contains
>> sane values. Anyway, a proper patch for dw-apb-gpio would include
>> checking for sane (e.g. non-zero) values. And nr-gpios will always
>> stay as fall-back just because e.g. sunxi does not have the CONFIG
>> registers.
>
> Shouldn't that be use nr-gpios and if not available, read the CONFIG
> registers? Else, what about bogus registers ?

Probably, it is a better idea to only look for CONFIG registers if
nr-gpios is not set. Anyway, I'll really have to find more time first ;)

Sebastian

[PATCH 2/2] ARM: dts: berlin: add GPIO nodes for the BG2Q

[Sebastian Hesselbarth]

On 04/15/2014 01:48 PM, Alexandre Belloni wrote:
> On 15/04/2014 at 12:26:11 +0200, Sebastian Hesselbarth wrote :
>> On 04/15/2014 12:00 PM, Jisheng Zhang wrote:
>>> On Tue, 15 Apr 2014 02:23:03 -0700
>>> Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> wrote:
>>>> I am fine with using nr-gpios property now, but I guess BG2Q also
>>>> has that CONFIG[1,2] registers to actually read out the features
>>>> synthesized in? If I find some time, I'll prepare a patch for
>>>> dw-apb-gpio to exploit that (optional) information instead of
>>>> using nr-gpios.
>>>
>>> The problem is CONFIG1/2 registers don't exist on some versions.
>>> For example, the version used in BG2/BG2CD. So nr-gpio is necessary
>>> if we want to support these versions.
>>
>> Hmm, are you sure about BG2? I remember reading it and it contains
>> sane values. Anyway, a proper patch for dw-apb-gpio would include
>> checking for sane (e.g. non-zero) values. And nr-gpios will always
>> stay as fall-back just because e.g. sunxi does not have the CONFIG
>> registers.
>
> Shouldn't that be use nr-gpios and if not available, read the CONFIG
> registers? Else, what about bogus registers ?

Probably, it is a better idea to only look for CONFIG registers if
nr-gpios is not set. Anyway, I'll really have to find more time first ;)

Sebastian