diff options
| author | Chris Packham <chris.packham@alliedtelesis.co.nz> | 2021-05-12 00:20:50 +0300 |
|---|---|---|
| committer | Wolfram Sang <wsa@kernel.org> | 2021-05-27 22:52:06 +0300 |
| commit | 7adc7b225cddcfd0f346d10144fd7a3d3d9f9ea7 (patch) | |
| tree | 5840a428afcb511dfbf1f66169467750ebe4fe6b | |
| parent | a5063ab976024f72865029646d7c8c9dfa63b595 (diff) | |
| download | linux-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>
| -rw-r--r-- | arch/powerpc/boot/dts/fsl/p2041si-post.dtsi | 16 |
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" |