[PATCH] i2c-qoriq: modified compatibility for correct prescaler

[Valentin Longchamp]

With "fsl-i2c" compatibility the i2c frequency is not set
correctly, because it sets no prescaler. According to the AN2919 from
Freescale and the QorIQ (P2041) documentation, the source clock is 1/2
the platform clock. This implies that a prescaler of 2 must be used.

This changes the compatibility of the qoriq-i2c .dtsi files to pick the
mpc8543, which uses the same driver but sets the correct prescaler.

Signed-off-by: Rainer Boschung <rainer.boschung at keymile.com>
Signed-off-by: Valentin Longchamp <valentin.longchamp at keymile.com>
---

 arch/powerpc/boot/dts/fsl/qoriq-i2c-0.dtsi | 4 ++--
 arch/powerpc/boot/dts/fsl/qoriq-i2c-1.dtsi | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/boot/dts/fsl/qoriq-i2c-0.dtsi b/arch/powerpc/boot/dts/fsl/qoriq-i2c-0.dtsi
index 5f9bf7d..aa6c366 100644
--- a/arch/powerpc/boot/dts/fsl/qoriq-i2c-0.dtsi
+++ b/arch/powerpc/boot/dts/fsl/qoriq-i2c-0.dtsi
@@ -36,7 +36,7 @@ i2c at 118000 {
 	#address-cells = <1>;
 	#size-cells = <0>;
 	cell-index = <0>;
-	compatible = "fsl-i2c";
+	compatible = "fsl,mpc8543-i2c", "fsl-i2c";
 	reg = <0x118000 0x100>;
 	interrupts = <38 2 0 0>;
 	dfsrr;
@@ -46,7 +46,7 @@ i2c at 118100 {
 	#address-cells = <1>;
 	#size-cells = <0>;
 	cell-index = <1>;
-	compatible = "fsl-i2c";
+	compatible = "fsl,mpc8543-i2c", "fsl-i2c";
 	reg = <0x118100 0x100>;
 	interrupts = <38 2 0 0>;
 	dfsrr;
diff --git a/arch/powerpc/boot/dts/fsl/qoriq-i2c-1.dtsi b/arch/powerpc/boot/dts/fsl/qoriq-i2c-1.dtsi
index 7989bf5..b697a3b 100644
--- a/arch/powerpc/boot/dts/fsl/qoriq-i2c-1.dtsi
+++ b/arch/powerpc/boot/dts/fsl/qoriq-i2c-1.dtsi
@@ -36,7 +36,7 @@ i2c at 119000 {
 	#address-cells = <1>;
 	#size-cells = <0>;
 	cell-index = <2>;
-	compatible = "fsl-i2c";
+	compatible = "fsl,mpc8543-i2c", "fsl-i2c";
 	reg = <0x119000 0x100>;
 	interrupts = <39 2 0 0>;
 	dfsrr;
@@ -46,7 +46,7 @@ i2c at 119100 {
 	#address-cells = <1>;
 	#size-cells = <0>;
 	cell-index = <3>;
-	compatible = "fsl-i2c";
+	compatible = "fsl,mpc8543-i2c", "fsl-i2c";
 	reg = <0x119100 0x100>;
 	interrupts = <39 2 0 0>;
 	dfsrr;
-- 
1.8.0.1