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Message-Id: <20210511212052.27242-4-chris.packham@alliedtelesis.co.nz>
Date: Wed, 12 May 2021 09:20:51 +1200
From: Chris Packham <chris.packham@...iedtelesis.co.nz>
To: wsa@...nel.org, andriy.shevchenko@...ux.intel.com,
andy.shevchenko@...il.com, robh+dt@...nel.org, mpe@...erman.id.au
Cc: linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
Chris Packham <chris.packham@...iedtelesis.co.nz>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Paul Mackerras <paulus@...ba.org>
Subject: [PATCH v3 3/4] powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P1010 i2c controllers
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@...iedtelesis.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/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@...0 {
};
/include/ "pq3-i2c-0.dtsi"
+ i2c@...0 {
+ fsl,i2c-erratum-a004447;
+ };
+
/include/ "pq3-i2c-1.dtsi"
+ i2c@...0 {
+ fsl,i2c-erratum-a004447;
+ };
+
/include/ "pq3-duart-0.dtsi"
/include/ "pq3-espi-0.dtsi"
spi0: spi@...0 {
--
2.31.1
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