From: Michael Ellerman <mpe@ellerman•id.au>
To: Chris Packham <chris.packham@alliedtelesis•co.nz>,
wsa@kernel•org, andriy.shevchenko@linux•intel.com,
andy.shevchenko@gmail•com, robh+dt@kernel•org
Cc: devicetree@vger•kernel.org, linux-kernel@vger•kernel.org,
Chris Packham <chris.packham@alliedtelesis•co.nz>,
Paul Mackerras <paulus@samba•org>,
linux-i2c@vger•kernel.org, linuxppc-dev@lists•ozlabs.org
Subject: Re: [PATCH v3 3/4] powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P1010 i2c controllers
Date: Wed, 26 May 2021 11:02:26 +1000 [thread overview]
Message-ID: <871r9ui9y5.fsf@mpe.ellerman.id.au> (raw)
In-Reply-To: <20210511212052.27242-4-chris.packham@alliedtelesis.co.nz>
Chris Packham <chris.packham@alliedtelesis•co.nz> writes:
> The i2c controllers on the P1010 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 P1010 Chip Errata Rev L.
>
> Signed-off-by: Chris Packham <chris.packham@alliedtelesis•co.nz>
> ---
>
> Notes:
> Changes in v3:
> - New
>
> arch/powerpc/boot/dts/fsl/p1010si-post.dtsi | 8 ++++++++
> 1 file changed, 8 insertions(+)
Acked-by: Michael Ellerman <mpe@ellerman•id.au>
cheers
> diff --git a/arch/powerpc/boot/dts/fsl/p1010si-post.dtsi b/arch/powerpc/boot/dts/fsl/p1010si-post.dtsi
> index c2717f31925a..ccda0a91abf0 100644
> --- a/arch/powerpc/boot/dts/fsl/p1010si-post.dtsi
> +++ b/arch/powerpc/boot/dts/fsl/p1010si-post.dtsi
> @@ -122,7 +122,15 @@ memory-controller@2000 {
> };
>
> /include/ "pq3-i2c-0.dtsi"
> + i2c@3000 {
> + fsl,i2c-erratum-a004447;
> + };
> +
> /include/ "pq3-i2c-1.dtsi"
> + i2c@3100 {
> + fsl,i2c-erratum-a004447;
> + };
> +
> /include/ "pq3-duart-0.dtsi"
> /include/ "pq3-espi-0.dtsi"
> spi0: spi@7000 {
> --
> 2.31.1
next prev parent reply other threads:[~2021-05-26 1:03 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-11 21:20 [PATCH v3 0/4] P2040/P2041 i2c recovery erratum Chris Packham
2021-05-11 21:20 ` [PATCH v3 1/4] dt-bindings: i2c: mpc: Add fsl, i2c-erratum-a004447 flag Chris Packham
2021-05-11 21:20 ` [PATCH v3 2/4] powerpc/fsl: set fsl, i2c-erratum-a004447 flag for P2041 i2c controllers Chris Packham
2021-05-26 1:02 ` [PATCH v3 2/4] powerpc/fsl: set fsl,i2c-erratum-a004447 " Michael Ellerman
2021-05-11 21:20 ` [PATCH v3 3/4] powerpc/fsl: set fsl, i2c-erratum-a004447 flag for P1010 " Chris Packham
2021-05-26 1:02 ` Michael Ellerman [this message]
2021-05-11 21:20 ` [PATCH v3 4/4] i2c: mpc: implement erratum A-004447 workaround Chris Packham
2021-05-11 22:10 ` [PATCH v3 0/4] P2040/P2041 i2c recovery erratum Joakim Tjernlund
2021-05-12 1:48 ` Chris Packham
2021-05-12 8:57 ` Joakim Tjernlund
2021-05-12 15:01 ` wsa
2021-05-20 3:36 ` Chris Packham
2021-05-25 18:49 ` wsa
2021-05-25 18:53 ` Wolfram Sang
2021-05-26 1:02 ` Michael Ellerman
2021-05-27 19:53 ` Wolfram Sang
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