[PATCH/RFC] ARM: shmobile: only enable used I2C interfaces in DT on all Renesas boards
From: Guennadi Liakhovetski <hidden>
Date: 2013-09-26 11:06:01
Also in:
linux-sh
Subsystem:
the rest · Maintainer:
Linus Torvalds
Currently all I2C interfaces in all *.dtsi files for various Renesas SoCs are enabled by default. Switch them all off and only enable populated I2C interfaces in board-specific *.dts files. Signed-off-by: Guennadi Liakhovetski <redacted> --- RFC because this can break things. E.g. if someone relied on an I2C bus being available and used it from the user-space. Otherwise I don't think it should break anything. Compile-tested all affected .dtb, run-time tested on kzm9g. arch/arm/boot/dts/r8a73a4-ape6evm-reference.dts | 1 + arch/arm/boot/dts/r8a73a4-ape6evm.dts | 1 + arch/arm/boot/dts/r8a73a4.dtsi | 9 +++++++++ .../boot/dts/r8a7740-armadillo800eva-reference.dts | 1 + arch/arm/boot/dts/r8a7740.dtsi | 2 ++ arch/arm/boot/dts/r8a7779.dtsi | 4 ++++ arch/arm/boot/dts/sh73a0-kzm9g-reference.dts | 2 ++ arch/arm/boot/dts/sh73a0.dtsi | 5 +++++ 8 files changed, 25 insertions(+), 0 deletions(-)
diff --git a/arch/arm/boot/dts/r8a73a4-ape6evm-reference.dts b/arch/arm/boot/dts/r8a73a4-ape6evm-reference.dts
index 2b49b05..9443e93 100644
--- a/arch/arm/boot/dts/r8a73a4-ape6evm-reference.dts
+++ b/arch/arm/boot/dts/r8a73a4-ape6evm-reference.dts@@ -62,6 +62,7 @@ }; &i2c5 { + status = "okay"; vdd_dvfs: max8973@1b { compatible = "maxim,max8973"; reg = <0x1b>;
diff --git a/arch/arm/boot/dts/r8a73a4-ape6evm.dts b/arch/arm/boot/dts/r8a73a4-ape6evm.dts
index 72f867e..91436b5 100644
--- a/arch/arm/boot/dts/r8a73a4-ape6evm.dts
+++ b/arch/arm/boot/dts/r8a73a4-ape6evm.dts@@ -52,6 +52,7 @@ }; &i2c5 { + status = "okay"; vdd_dvfs: max8973@1b { compatible = "maxim,max8973"; reg = <0x1b>;
diff --git a/arch/arm/boot/dts/r8a73a4.dtsi b/arch/arm/boot/dts/r8a73a4.dtsi
index 658fcc5..6048825 100644
--- a/arch/arm/boot/dts/r8a73a4.dtsi
+++ b/arch/arm/boot/dts/r8a73a4.dtsi@@ -93,6 +93,7 @@ reg = <0 0xe6500000 0 0x428>; interrupt-parent = <&gic>; interrupts = <0 174 0x4>; + status = "disabled"; }; i2c1: i2c@e6510000 {
@@ -102,6 +103,7 @@ reg = <0 0xe6510000 0 0x428>; interrupt-parent = <&gic>; interrupts = <0 175 0x4>; + status = "disabled"; }; i2c2: i2c@e6520000 {
@@ -111,6 +113,7 @@ reg = <0 0xe6520000 0 0x428>; interrupt-parent = <&gic>; interrupts = <0 176 0x4>; + status = "disabled"; }; i2c3: i2c@e6530000 {
@@ -120,6 +123,7 @@ reg = <0 0xe6530000 0 0x428>; interrupt-parent = <&gic>; interrupts = <0 177 0x4>; + status = "disabled"; }; i2c4: i2c@e6540000 {
@@ -129,6 +133,7 @@ reg = <0 0xe6540000 0 0x428>; interrupt-parent = <&gic>; interrupts = <0 178 0x4>; + status = "disabled"; }; i2c5: i2c@e60b0000 {
@@ -138,6 +143,7 @@ reg = <0 0xe60b0000 0 0x428>; interrupt-parent = <&gic>; interrupts = <0 179 0x4>; + status = "disabled"; }; i2c6: i2c@e6550000 {
@@ -147,6 +153,7 @@ reg = <0 0xe6550000 0 0x428>; interrupt-parent = <&gic>; interrupts = <0 184 0x4>; + status = "disabled"; }; i2c7: i2c@e6560000 {
@@ -156,6 +163,7 @@ reg = <0 0xe6560000 0 0x428>; interrupt-parent = <&gic>; interrupts = <0 185 0x4>; + status = "disabled"; }; i2c8: i2c@e6570000 {
@@ -165,6 +173,7 @@ reg = <0 0xe6570000 0 0x428>; interrupt-parent = <&gic>; interrupts = <0 173 0x4>; + status = "disabled"; }; mmcif0: mmcif@ee200000 {
diff --git a/arch/arm/boot/dts/r8a7740-armadillo800eva-reference.dts b/arch/arm/boot/dts/r8a7740-armadillo800eva-reference.dts
index 801442b..8b2aab5 100644
--- a/arch/arm/boot/dts/r8a7740-armadillo800eva-reference.dts
+++ b/arch/arm/boot/dts/r8a7740-armadillo800eva-reference.dts@@ -62,6 +62,7 @@ }; &i2c0 { + status = "okay"; touchscreen: st1232@55 { compatible = "sitronix,st1232"; reg = <0x55>;
diff --git a/arch/arm/boot/dts/r8a7740.dtsi b/arch/arm/boot/dts/r8a7740.dtsi
index 44d3d52..868bdde 100644
--- a/arch/arm/boot/dts/r8a7740.dtsi
+++ b/arch/arm/boot/dts/r8a7740.dtsi@@ -131,6 +131,7 @@ 0 202 0x4 0 203 0x4 0 204 0x4>; + status = "disabled"; }; i2c1: i2c@e6c20000 {
@@ -143,6 +144,7 @@ 0 71 0x4 0 72 0x4 0 73 0x4>; + status = "disabled"; }; pfc: pfc@e6050000 {
diff --git a/arch/arm/boot/dts/r8a7779.dtsi b/arch/arm/boot/dts/r8a7779.dtsi
index ebbe507..912b3a0 100644
--- a/arch/arm/boot/dts/r8a7779.dtsi
+++ b/arch/arm/boot/dts/r8a7779.dtsi@@ -156,6 +156,7 @@ reg = <0xffc70000 0x1000>; interrupt-parent = <&gic>; interrupts = <0 79 0x4>; + status = "disabled"; }; i2c1: i2c@ffc71000 {
@@ -165,6 +166,7 @@ reg = <0xffc71000 0x1000>; interrupt-parent = <&gic>; interrupts = <0 82 0x4>; + status = "disabled"; }; i2c2: i2c@ffc72000 {
@@ -174,6 +176,7 @@ reg = <0xffc72000 0x1000>; interrupt-parent = <&gic>; interrupts = <0 80 0x4>; + status = "disabled"; }; i2c3: i2c@ffc73000 {
@@ -183,6 +186,7 @@ reg = <0xffc73000 0x1000>; interrupt-parent = <&gic>; interrupts = <0 81 0x4>; + status = "disabled"; }; pfc: pfc@fffc0000 {
diff --git a/arch/arm/boot/dts/sh73a0-kzm9g-reference.dts b/arch/arm/boot/dts/sh73a0-kzm9g-reference.dts
index 2122306..8ee06dd 100644
--- a/arch/arm/boot/dts/sh73a0-kzm9g-reference.dts
+++ b/arch/arm/boot/dts/sh73a0-kzm9g-reference.dts@@ -108,6 +108,7 @@ }; &i2c0 { + status = "okay"; as3711@40 { compatible = "ams,as3711"; reg = <0x40>;
@@ -183,6 +184,7 @@ &i2c3 { pinctrl-0 = <&i2c3_pins>; pinctrl-names = "default"; + status = "okay"; }; &mmcif {
diff --git a/arch/arm/boot/dts/sh73a0.dtsi b/arch/arm/boot/dts/sh73a0.dtsi
index 3955c76..fcf2688 100644
--- a/arch/arm/boot/dts/sh73a0.dtsi
+++ b/arch/arm/boot/dts/sh73a0.dtsi@@ -135,6 +135,7 @@ 0 168 0x4 0 169 0x4 0 170 0x4>; + status = "disabled"; }; i2c1: i2c@e6822000 {
@@ -147,6 +148,7 @@ 0 52 0x4 0 53 0x4 0 54 0x4>; + status = "disabled"; }; i2c2: i2c@e6824000 {
@@ -159,6 +161,7 @@ 0 172 0x4 0 173 0x4 0 174 0x4>; + status = "disabled"; }; i2c3: i2c@e6826000 {
@@ -171,6 +174,7 @@ 0 184 0x4 0 185 0x4 0 186 0x4>; + status = "disabled"; }; i2c4: i2c@e6828000 {
@@ -183,6 +187,7 @@ 0 188 0x4 0 189 0x4 0 190 0x4>; + status = "disabled"; }; mmcif: mmcif@e6bd0000 {
--
1.7.2.5
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