From: Sekhar Nori <nsekhar@ti.com>
To: Tero Kristo <t-kristo@ti.com>, Nishanth Menon <nm@ti.com>
Cc: Linux ARM Mailing List <linux-arm-kernel@lists.infradead.org>,
Kishon Vijay Abraham I <kishon@ti.com>
Subject: [PATCH] arm64: dts: ti: k3-am65: restrict PCIe to Gen2 speed
Date: Sun, 2 Aug 2020 22:23:56 +0530 [thread overview]
Message-ID: <20200802165356.10285-1-nsekhar@ti.com> (raw)
Per errata i2104 documented in AM65x device errata document (TI document
number SPRZ452E, revised June 2019), Gen3 operation is not supported for
both PCIe Root Complex and Endpoint modes of operation.
See: https://www.ti.com/lit/er/sprz452e/sprz452e.pdf
Restrict speed to Gen2 to address the errata.
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
---
arch/arm64/boot/dts/ti/k3-am65-main.dtsi | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
index 61815228e230..22712d503290 100644
--- a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
@@ -650,7 +650,7 @@
ti,syscon-pcie-mode = <&pcie0_mode>;
bus-range = <0x0 0xff>;
num-viewport = <16>;
- max-link-speed = <3>;
+ max-link-speed = <2>;
dma-coherent;
interrupts = <GIC_SPI 340 IRQ_TYPE_EDGE_RISING>;
msi-map = <0x0 &gic_its 0x0 0x10000>;
@@ -664,7 +664,7 @@
ti,syscon-pcie-mode = <&pcie0_mode>;
num-ib-windows = <16>;
num-ob-windows = <16>;
- max-link-speed = <3>;
+ max-link-speed = <2>;
dma-coherent;
interrupts = <GIC_SPI 340 IRQ_TYPE_EDGE_RISING>;
};
@@ -682,7 +682,7 @@
ti,syscon-pcie-mode = <&pcie1_mode>;
bus-range = <0x0 0xff>;
num-viewport = <16>;
- max-link-speed = <3>;
+ max-link-speed = <2>;
dma-coherent;
interrupts = <GIC_SPI 355 IRQ_TYPE_EDGE_RISING>;
msi-map = <0x0 &gic_its 0x10000 0x10000>;
@@ -696,7 +696,7 @@
ti,syscon-pcie-mode = <&pcie1_mode>;
num-ib-windows = <16>;
num-ob-windows = <16>;
- max-link-speed = <3>;
+ max-link-speed = <2>;
dma-coherent;
interrupts = <GIC_SPI 355 IRQ_TYPE_EDGE_RISING>;
};
--
2.17.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2020-08-02 16:56 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-02 16:53 Sekhar Nori [this message]
2020-08-27 4:43 ` [PATCH] arm64: dts: ti: k3-am65: restrict PCIe to Gen2 speed Sekhar Nori
2020-08-28 0:43 ` Nishanth Menon
[not found] ` <20200828002426.e7surnodpblgln7h@akan>
2020-08-28 3:04 ` Sekhar Nori
2020-08-28 11:32 ` Nishanth Menon
2020-08-28 11:56 ` Sekhar Nori
2020-08-28 13:08 ` Nishanth Menon
2020-08-31 18:07 ` Nishanth Menon
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200802165356.10285-1-nsekhar@ti.com \
--to=nsekhar@ti.com \
--cc=kishon@ti.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=nm@ti.com \
--cc=t-kristo@ti.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).