[PATCH 2/3] powerpc/fsl: set fsl, i2c-erratum-a004447 flag for P2041 i2c controllers
Chris Packham
chris.packham at alliedtelesis.co.nz
Thu May 6 11:10:13 AEST 2021
The i2c controllers on the P2040/P2041 have an erratum where the
documented scheme for i2c bus recovery will not work (A-004447). A
different mechanism is needed which is documented in the P2040 Chip
Errata Rev Q (latest available at the time of writing).
Signed-off-by: Chris Packham <chris.packham at alliedtelesis.co.nz>
---
arch/powerpc/boot/dts/fsl/p2041si-post.dtsi | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi b/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi
index 872e4485dc3f..ddc018d42252 100644
--- a/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi
@@ -371,7 +371,23 @@ sdhc at 114000 {
};
/include/ "qoriq-i2c-0.dtsi"
+ i2c at 118000 {
+ fsl,i2c-erratum-a004447;
+ };
+
+ i2c at 118100 {
+ fsl,i2c-erratum-a004447;
+ };
+
/include/ "qoriq-i2c-1.dtsi"
+ i2c at 119000 {
+ fsl,i2c-erratum-a004447;
+ };
+
+ i2c at 119100 {
+ fsl,i2c-erratum-a004447;
+ };
+
/include/ "qoriq-duart-0.dtsi"
/include/ "qoriq-duart-1.dtsi"
/include/ "qoriq-gpio-0.dtsi"
--
2.31.1
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