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From:   Chris Packham <chris.packham@alliedtelesis.co.nz>
To:     wsa@kernel.org, andriy.shevchenko@linux.intel.com,
        andy.shevchenko@gmail.com, robh+dt@kernel.org, mpe@ellerman.id.au
Cc:     linux-i2c@vger.kernel.org, devicetree@vger.kernel.org,
        linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
        Chris Packham <chris.packham@alliedtelesis.co.nz>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Paul Mackerras <paulus@samba.org>
Subject: [PATCH v3 3/4] powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P1010 i2c controllers
Date:   Wed, 12 May 2021 09:20:51 +1200
Message-Id: <20210511212052.27242-4-chris.packham@alliedtelesis.co.nz>
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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(+)

diff --git a/arch/powerpc/boot/dts/fsl/p1010si-post.dtsi b/arch/powerpc/b=
oot/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 {
 	};
=20
 /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 {
--=20
2.31.1