Chris Packham <chris.packham@xxxxxxxxxxxxxxxxxxx> writes:
> 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@xxxxxxxxxxxxxxxxxxx>
> ---
> arch/powerpc/boot/dts/fsl/p2041si-post.dtsi | 16 ++++++++++++++++
> 1 file changed, 16 insertions(+)
Acked-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
cheers
> 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@114000 {
> };
>
> /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"
> --
> 2.31.1
