From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
devicetree@vger.kernel.org, Wolfram Sang <wsa@kernel.org>,
Chris Packham <chris.packham@alliedtelesis.co.nz>,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH AUTOSEL 5.12 43/43] powerpc/fsl: set fsl, i2c-erratum-a004447 flag for P1010 i2c controllers
Date: Thu, 3 Jun 2021 13:07:33 -0400 [thread overview]
Message-ID: <20210603170734.3168284-43-sashal@kernel.org> (raw)
In-Reply-To: <20210603170734.3168284-1-sashal@kernel.org>
From: Chris Packham <chris.packham@alliedtelesis.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@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>
---
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@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 {
--
2.30.2
prev parent reply other threads:[~2021-06-03 17:09 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210603170734.3168284-1-sashal@kernel.org>
2021-06-03 17:07 ` [PATCH AUTOSEL 5.12 42/43] powerpc/fsl: set fsl, i2c-erratum-a004447 flag for P2041 i2c controllers Sasha Levin
2021-06-04 0:42 ` [PATCH AUTOSEL 5.12 42/43] powerpc/fsl: set fsl,i2c-erratum-a004447 " Michael Ellerman
2021-06-04 0:58 ` Chris Packham
2021-06-10 22:00 ` Sasha Levin
2021-06-03 17:07 ` Sasha Levin [this message]
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