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ARM: dts: add sysreg phandle to i2c device nodes for exynos

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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>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Pankaj Dubey 2014-11-27 03:24:45 +09:00 committed by Kukjin Kim
parent bd316f5ffc
commit 1888eb75e6
3 changed files with 9 additions and 0 deletions
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1
Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt
View File

@ -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:

4
arch/arm/boot/dts/exynos5250.dtsi
View File

@ -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";
};

4
arch/arm/boot/dts/exynos5420.dtsi
View File

@ -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";
};