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authorChris Packham <chris.packham@alliedtelesis.co.nz>2021-05-12 00:20:50 +0300
committerWolfram Sang <wsa@kernel.org>2021-05-27 22:52:06 +0300
commit7adc7b225cddcfd0f346d10144fd7a3d3d9f9ea7 (patch)
tree5840a428afcb511dfbf1f66169467750ebe4fe6b /arch/powerpc
parenta5063ab976024f72865029646d7c8c9dfa63b595 (diff)
downloadlinux-7adc7b225cddcfd0f346d10144fd7a3d3d9f9ea7.tar.xz
powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P2041 i2c controllers
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@alliedtelesis.co.nz> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/boot/dts/fsl/p2041si-post.dtsi16
1 files changed, 16 insertions, 0 deletions
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 @@
};
/include/ "qoriq-i2c-0.dtsi"
+ i2c@118000 {
+ fsl,i2c-erratum-a004447;
+ };
+
+ i2c@118100 {
+ fsl,i2c-erratum-a004447;
+ };
+
/include/ "qoriq-i2c-1.dtsi"
+ i2c@119000 {
+ fsl,i2c-erratum-a004447;
+ };
+
+ i2c@119100 {
+ fsl,i2c-erratum-a004447;
+ };
+
/include/ "qoriq-duart-0.dtsi"
/include/ "qoriq-duart-1.dtsi"
/include/ "qoriq-gpio-0.dtsi"