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Date: Thu, 3 Jun 2021 13:07:33 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Chris Packham <chris.packham@...iedtelesis.co.nz>,
Michael Ellerman <mpe@...erman.id.au>,
Wolfram Sang <wsa@...nel.org>, Sasha Levin <sashal@...nel.org>,
devicetree@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH AUTOSEL 5.12 43/43] powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P1010 i2c controllers
From: Chris Packham <chris.packham@...iedtelesis.co.nz>
[ Upstream commit 19ae697a1e4edf1d755b413e3aa38da65e2db23b ]
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>
Acked-by: Michael Ellerman <mpe@...erman.id.au>
Signed-off-by: Wolfram Sang <wsa@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
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 1b4aafc1f6a2..9716a0484ecf 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 {
--
2.30.2
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