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@xxxxxxxxxxx>
Signed-off-by: Valentin Longchamp <valentin.longchamp@xxxxxxxxxxx>
---
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@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@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@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@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
--
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