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

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[ Upstream commit 7adc7b225c ]

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>
This commit is contained in:
Chris Packham
2021-05-12 09:20:50 +12:00
committed by Greg Kroah-Hartman
parent 590f718a64
commit a7c3c17867
1 changed files with 16 additions and 0 deletions
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16
arch/powerpc/boot/dts/fsl/p2041si-post.dtsi
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@@ -371,7 +371,23 @@
}; };
/include/ "qoriq-i2c-0.dtsi" /include/ "qoriq-i2c-0.dtsi"
i2c@118000 {
fsl,i2c-erratum-a004447;
};
i2c@118100 {
fsl,i2c-erratum-a004447;
};
/include/ "qoriq-i2c-1.dtsi" /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-0.dtsi"
/include/ "qoriq-duart-1.dtsi" /include/ "qoriq-duart-1.dtsi"
/include/ "qoriq-gpio-0.dtsi" /include/ "qoriq-gpio-0.dtsi"