powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P2041 i2c controllers

[ Upstream commit 7adc7b225cddcfd0f346d10144fd7a3d3d9f9ea7 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi b/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi
index 51e975d7631aa64dbb21cbe7c226775e176bb2ab..8921f17fca42ed257085f168f16245471c89029f 100644 (file)
--- a/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi
@@ -389,7 +389,23 @@
        };
 
 /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"