Messages in this thread | | | From | Michael Ellerman <> | Subject | Re: [PATCH v3 2/4] powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P2041 i2c controllers | Date | Wed, 26 May 2021 11:02:05 +1000 |
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Chris Packham <chris.packham@alliedtelesis.co.nz> 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@alliedtelesis.co.nz> > --- > arch/powerpc/boot/dts/fsl/p2041si-post.dtsi | 16 ++++++++++++++++ > 1 file changed, 16 insertions(+)
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
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
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