[PATCH v6 1/2] i2c: s3c2410: add Sysreg phandle to i2c device nodes

[PATCH v6 1/2] i2c: s3c2410: add Sysreg phandle to i2c device nodes

[Pankaj Dubey]

This patch adds syscon based phandle to i2c device nodes of exynos5250
and exynos5420. These phandles will be used to save restore i2c sysreg
configuration register during s2r from i2c driver.

CC: Rob Herring <robh+dt@kernel.org>
CC: Randy Dunlap <rdunlap@infradead.org>
CC: Russell King <linux@arm.linux.org.uk>
CC: devicetree@vger.kernel.org
CC: linux-doc@vger.kernel.org
Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
---
 .../devicetree/bindings/i2c/i2c-s3c2410.txt        |    1 +
 arch/arm/boot/dts/exynos5250.dtsi                  |    4 ++++
 arch/arm/boot/dts/exynos5420.dtsi                  |    4 ++++
 3 files changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt b/Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt
index 278de8e..89b3250 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt
@@ -32,6 +32,7 @@ Optional properties:
     specified, default value is 0.
   - samsung,i2c-max-bus-freq: Desired frequency in Hz of the bus. If not
     specified, the default value in Hz is 100000.
+  - samsung,sysreg-phandle - handle to syscon used to control the system registers
 
 Example:
 
diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
index 0a588b4..d45a07e 100644
--- a/arch/arm/boot/dts/exynos5250.dtsi
+++ b/arch/arm/boot/dts/exynos5250.dtsi
@@ -293,6 +293,7 @@
 		clock-names = "i2c";
 		pinctrl-names = "default";
 		pinctrl-0 = <&i2c0_bus>;
+		samsung,sysreg-phandle = <&sysreg_system_controller>;
 		status = "disabled";
 	};
 
@@ -306,6 +307,7 @@
 		clock-names = "i2c";
 		pinctrl-names = "default";
 		pinctrl-0 = <&i2c1_bus>;
+		samsung,sysreg-phandle = <&sysreg_system_controller>;
 		status = "disabled";
 	};
 
@@ -319,6 +321,7 @@
 		clock-names = "i2c";
 		pinctrl-names = "default";
 		pinctrl-0 = <&i2c2_bus>;
+		samsung,sysreg-phandle = <&sysreg_system_controller>;
 		status = "disabled";
 	};
 
@@ -332,6 +335,7 @@
 		clock-names = "i2c";
 		pinctrl-names = "default";
 		pinctrl-0 = <&i2c3_bus>;
+		samsung,sysreg-phandle = <&sysreg_system_controller>;
 		status = "disabled";
 	};
 
diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi
index 8617a03..90bf401 100644
--- a/arch/arm/boot/dts/exynos5420.dtsi
+++ b/arch/arm/boot/dts/exynos5420.dtsi
@@ -560,6 +560,7 @@
 		clock-names = "i2c";
 		pinctrl-names = "default";
 		pinctrl-0 = <&i2c0_bus>;
+		samsung,sysreg-phandle = <&sysreg_system_controller>;
 		status = "disabled";
 	};
 
@@ -573,6 +574,7 @@
 		clock-names = "i2c";
 		pinctrl-names = "default";
 		pinctrl-0 = <&i2c1_bus>;
+		samsung,sysreg-phandle = <&sysreg_system_controller>;
 		status = "disabled";
 	};
 
@@ -586,6 +588,7 @@
 		clock-names = "i2c";
 		pinctrl-names = "default";
 		pinctrl-0 = <&i2c2_bus>;
+		samsung,sysreg-phandle = <&sysreg_system_controller>;
 		status = "disabled";
 	};
 
@@ -599,6 +602,7 @@
 		clock-names = "i2c";
 		pinctrl-names = "default";
 		pinctrl-0 = <&i2c3_bus>;
+		samsung,sysreg-phandle = <&sysreg_system_controller>;
 		status = "disabled";
 	};
 
-- 
1.7.9.5

Re: [PATCH v6 1/2] i2c: s3c2410: add Sysreg phandle to i2c device nodes

[Kukjin Kim]

On 11/24/14 17:47, Pankaj Dubey wrote:
> This patch adds syscon based phandle to i2c device nodes of exynos5250
> and exynos5420. These phandles will be used to save restore i2c sysreg
> configuration register during s2r from i2c driver.
> 
> CC: Rob Herring <robh+dt@kernel.org>
> CC: Randy Dunlap <rdunlap@infradead.org>
> CC: Russell King <linux@arm.linux.org.uk>
> CC: devicetree@vger.kernel.org
> CC: linux-doc@vger.kernel.org
> Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>

Applied with change the subject 'ARM: dts: add sysreg phandle to...'

BTW I'm holding on 2nd because conflicts between pm update and cleanup
branches in my tree...

- Kukjin

> ---
>  .../devicetree/bindings/i2c/i2c-s3c2410.txt        |    1 +
>  arch/arm/boot/dts/exynos5250.dtsi                  |    4 ++++
>  arch/arm/boot/dts/exynos5420.dtsi                  |    4 ++++
>  3 files changed, 9 insertions(+)

Re: [PATCH v6 1/2] i2c: s3c2410: add Sysreg phandle to i2c device nodes

[Pankaj Dubey]

On Thursday 27 November 2014 12:13 AM, Kukjin Kim wrote:
> On 11/24/14 17:47, Pankaj Dubey wrote:
>> This patch adds syscon based phandle to i2c device nodes of exynos5250
>> and exynos5420. These phandles will be used to save restore i2c sysreg
>> configuration register during s2r from i2c driver.
>>
>> CC: Rob Herring <robh+dt@kernel.org>
>> CC: Randy Dunlap <rdunlap@infradead.org>
>> CC: Russell King <linux@arm.linux.org.uk>
>> CC: devicetree@vger.kernel.org
>> CC: linux-doc@vger.kernel.org
>> Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
>
> Applied with change the subject 'ARM: dts: add sysreg phandle to...'
>

Thanks for correcting subject message.

> BTW I'm holding on 2nd because conflicts between pm update and cleanup
> branches in my tree...

Please let me know if anything to be done from my end.

Thanks,
Pankaj Dubey
>
> - Kukjin