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 4.19 22/23] powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P2041 i2c controllers
Date: Thu, 3 Jun 2021 13:09:58 -0400 [thread overview]
Message-ID: <20210603170959.3169420-22-sashal@kernel.org> (raw)
In-Reply-To: <20210603170959.3169420-1-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
WARNING: multiple messages have this Message-ID (diff)
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 4.19 22/23] powerpc/fsl: set fsl, i2c-erratum-a004447 flag for P2041 i2c controllers
Date: Thu, 3 Jun 2021 13:09:58 -0400 [thread overview]
Message-ID: <20210603170959.3169420-22-sashal@kernel.org> (raw)
In-Reply-To: <20210603170959.3169420-1-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 17:15 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-03 17:09 [PATCH AUTOSEL 4.19 01/23] spi: Fix spi device unregister flow Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 02/23] net/nfc/rawsock.c: fix a permission check bug Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 03/23] ASoC: Intel: bytcr_rt5640: Add quirk for the Glavey TM800A550L tablet Sasha Levin
2021-06-03 17:09 ` Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 04/23] ASoC: Intel: bytcr_rt5640: Add quirk for the Lenovo Miix 3-830 tablet Sasha Levin
2021-06-03 17:09 ` Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 05/23] ASoC: sti-sas: add missing MODULE_DEVICE_TABLE Sasha Levin
2021-06-03 17:09 ` Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 06/23] isdn: mISDN: netjet: Fix crash in nj_probe: Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 07/23] bonding: init notify_work earlier to avoid uninitialized use Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 08/23] netlink: disable IRQs for netlink_lock_table() Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 09/23] net: mdiobus: get rid of a BUG_ON() Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 10/23] cgroup: disable controllers at parse time Sasha Levin
2021-06-03 17:09 ` Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 11/23] wq: handle VM suspension in stall detection Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 12/23] net/qla3xxx: fix schedule while atomic in ql_sem_spinlock Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 13/23] RDS tcp loopback connection can hang Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 14/23] scsi: bnx2fc: Return failure if io_req is already in ABTS processing Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 15/23] scsi: vmw_pvscsi: Set correct residual data length Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 16/23] scsi: target: qla2xxx: Wait for stop_phase1 at WWN removal Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 17/23] net: macb: ensure the device is available before accessing GEMGXL control registers Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 18/23] net: appletalk: cops: Fix data race in cops_probe1 Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 19/23] nvme-fabrics: decode host pathing error for connect Sasha Levin
2021-06-03 17:09 ` Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 20/23] MIPS: Fix kernel hang under FUNCTION_GRAPH_TRACER and PREEMPT_TRACER Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 21/23] bnx2x: Fix missing error code in bnx2x_iov_init_one() Sasha Levin
2021-06-03 17:09 ` Sasha Levin [this message]
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 22/23] powerpc/fsl: set fsl, i2c-erratum-a004447 flag for P2041 i2c controllers Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 23/23] powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P1010 " Sasha Levin
2021-06-03 17:09 ` [PATCH AUTOSEL 4.19 23/23] powerpc/fsl: set fsl, i2c-erratum-a004447 " Sasha Levin
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