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| author | Chris Packham <chris.packham@alliedtelesis.co.nz> | 2021-05-12 09:20:50 +1200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-16 11:34:52 +0200 |
| commit | 172df61a8a133976d0937afbd5413a81ff4336b4 (patch) | |
| tree | 85dd72005b90e8d622734ee2249fcd5279ecd627 /arch | |
| parent | c83f46610857ee9e4ade19e381420eee5199be3b (diff) | |
| download | linux-stable-172df61a8a133976d0937afbd5413a81ff4336b4.tar.gz linux-stable-172df61a8a133976d0937afbd5413a81ff4336b4.tar.bz2 linux-stable-172df61a8a133976d0937afbd5413a81ff4336b4.zip | |
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>
Diffstat (limited to 'arch')
| -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 51e975d7631a..8921f17fca42 100644 --- 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" |