From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Chris Packham <chris.packham@alliedtelesis.co.nz>,
Michael Ellerman <mpe@ellerman.id.au>,
Wolfram Sang <wsa@kernel.org>, Sasha Levin <sashal@kernel.org>,
devicetree@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Subject: [PATCH AUTOSEL 4.14 17/18] powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P2041 i2c controllers
Date: Thu, 3 Jun 2021 13:10:28 -0400 [thread overview]
Message-ID: <20210603171029.3169669-17-sashal@kernel.org> (raw)
In-Reply-To: <20210603171029.3169669-1-sashal@kernel.org>
From: Chris Packham <chris.packham@alliedtelesis.co.nz>
[ Upstream commit 7adc7b225cddcfd0f346d10144fd7a3d3d9f9ea7 ]
The i2c controllers on the P2040/P2041 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 P2040 Chip
Errata Rev Q (latest available at the time of writing).
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/p2041si-post.dtsi | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi b/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi
index 51e975d7631a..8921f17fca42 100644
--- a/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi
@@ -389,7 +389,23 @@ sdhc@114000 {
};
/include/ "qoriq-i2c-0.dtsi"
+ i2c@118000 {
+ fsl,i2c-erratum-a004447;
+ };
+
+ i2c@118100 {
+ fsl,i2c-erratum-a004447;
+ };
+
/include/ "qoriq-i2c-1.dtsi"
+ i2c@119000 {
+ fsl,i2c-erratum-a004447;
+ };
+
+ i2c@119100 {
+ fsl,i2c-erratum-a004447;
+ };
+
/include/ "qoriq-duart-0.dtsi"
/include/ "qoriq-duart-1.dtsi"
/include/ "qoriq-gpio-0.dtsi"
--
2.30.2
next prev parent reply other threads:[~2021-06-03 17:16 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-03 17:10 [PATCH AUTOSEL 4.14 01/18] spi: Fix spi device unregister flow Sasha Levin
2021-06-03 17:10 ` [PATCH AUTOSEL 4.14 02/18] net/nfc/rawsock.c: fix a permission check bug Sasha Levin
2021-06-03 17:10 ` [PATCH AUTOSEL 4.14 03/18] ASoC: sti-sas: add missing MODULE_DEVICE_TABLE Sasha Levin
2021-06-03 17:10 ` [PATCH AUTOSEL 4.14 04/18] isdn: mISDN: netjet: Fix crash in nj_probe: Sasha Levin
2021-06-03 17:10 ` [PATCH AUTOSEL 4.14 05/18] bonding: init notify_work earlier to avoid uninitialized use Sasha Levin
2021-06-03 17:10 ` [PATCH AUTOSEL 4.14 06/18] netlink: disable IRQs for netlink_lock_table() Sasha Levin
2021-06-03 17:10 ` [PATCH AUTOSEL 4.14 07/18] net: mdiobus: get rid of a BUG_ON() Sasha Levin
2021-06-03 17:10 ` [PATCH AUTOSEL 4.14 08/18] cgroup: disable controllers at parse time Sasha Levin
2021-06-03 17:10 ` [PATCH AUTOSEL 4.14 09/18] wq: handle VM suspension in stall detection Sasha Levin
2021-06-03 17:10 ` [PATCH AUTOSEL 4.14 10/18] net/qla3xxx: fix schedule while atomic in ql_sem_spinlock Sasha Levin
2021-06-03 17:10 ` [PATCH AUTOSEL 4.14 11/18] scsi: vmw_pvscsi: Set correct residual data length Sasha Levin
2021-06-03 17:10 ` [PATCH AUTOSEL 4.14 12/18] scsi: target: qla2xxx: Wait for stop_phase1 at WWN removal Sasha Levin
2021-06-03 17:10 ` [PATCH AUTOSEL 4.14 13/18] net: macb: ensure the device is available before accessing GEMGXL control registers Sasha Levin
2021-06-03 17:10 ` [PATCH AUTOSEL 4.14 14/18] net: appletalk: cops: Fix data race in cops_probe1 Sasha Levin
2021-06-03 17:10 ` [PATCH AUTOSEL 4.14 15/18] MIPS: Fix kernel hang under FUNCTION_GRAPH_TRACER and PREEMPT_TRACER Sasha Levin
2021-06-03 17:10 ` [PATCH AUTOSEL 4.14 16/18] bnx2x: Fix missing error code in bnx2x_iov_init_one() Sasha Levin
2021-06-03 17:10 ` Sasha Levin [this message]
2021-06-03 17:10 ` [PATCH AUTOSEL 4.14 18/18] powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P1010 i2c controllers Sasha Levin
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