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Date: Mon, 6 Jul 2020 16:35:27 +0200
From: Geert Uytterhoeven <geert+renesas@...der.be>
To: Sergei Shtylyov <sergei.shtylyov@...il.com>,
"David S . Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Rob Herring <robh+dt@...nel.org>
Cc: Andrew Lunn <andrew@...n.ch>,
Oleksij Rempel <linux@...pel-privat.de>,
Philippe Schenker <philippe.schenker@...adex.com>,
Florian Fainelli <f.fainelli@...il.com>,
Heiner Kallweit <hkallweit1@...il.com>,
Dan Murphy <dmurphy@...com>,
Kazuya Mizuguchi <kazuya.mizuguchi.ks@...esas.com>,
Wolfram Sang <wsa+renesas@...g-engineering.com>,
Magnus Damm <magnus.damm@...il.com>, netdev@...r.kernel.org,
devicetree@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH v2 5/7] arm64: dts: renesas: rcar-gen3: Convert EtherAVB to explicit delay handling
Some EtherAVB variants support internal clock delay configuration, which
can add larger delays than the delays that are typically supported by
the PHY (using an "rgmii-*id" PHY mode, and/or "[rt]xc-skew-ps"
properties).
Historically, the EtherAVB driver configured these delays based on the
"rgmii-*id" PHY mode. This was wrong, as these are meant solely for the
PHY, not for the MAC. Hence properties were introduced for explicit
configuration of these delays.
Convert the R-Car Gen3 DTS files from the old to the new scheme:
- Add default "rx-internal-delay-ps" and "tx-internal-delay-ps"
properties to the SoC .dtsi files, to be overridden by board files
where needed,
- Convert board files from "rgmii-*id" PHY modes to "rgmii", adding
the appropriate "rx-internal-delay-ps" and/or "tx-internal-delay-ps"
overrides.
Notes:
- R-Car E3 and D3 do not support TX internal delay handling,
- On R-Car D3, TX internal delay handling must always be enabled,
hence this fixes a bug on Draak,
- On R-Car V3H, RX internal delay handling must always be enabled.
Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
---
v2:
- Replace "renesas,[rt]xc-delay-ps" by "[rt]x-internal-delay-ps".
---
arch/arm64/boot/dts/renesas/r8a77951.dtsi | 2 ++
arch/arm64/boot/dts/renesas/r8a77960.dtsi | 2 ++
arch/arm64/boot/dts/renesas/r8a77961.dtsi | 2 ++
arch/arm64/boot/dts/renesas/r8a77965.dtsi | 2 ++
arch/arm64/boot/dts/renesas/r8a77970-eagle.dts | 3 ++-
arch/arm64/boot/dts/renesas/r8a77970-v3msk.dts | 3 ++-
arch/arm64/boot/dts/renesas/r8a77970.dtsi | 2 ++
arch/arm64/boot/dts/renesas/r8a77980.dtsi | 2 ++
arch/arm64/boot/dts/renesas/r8a77990.dtsi | 1 +
arch/arm64/boot/dts/renesas/r8a77995.dtsi | 1 +
arch/arm64/boot/dts/renesas/salvator-common.dtsi | 2 +-
arch/arm64/boot/dts/renesas/ulcb.dtsi | 2 +-
12 files changed, 20 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/boot/dts/renesas/r8a77951.dtsi b/arch/arm64/boot/dts/renesas/r8a77951.dtsi
index 61d67d9714ab9531..507b37f4dfbcf3cf 100644
--- a/arch/arm64/boot/dts/renesas/r8a77951.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77951.dtsi
@@ -1250,6 +1250,8 @@
power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
resets = <&cpg 812>;
phy-mode = "rgmii";
+ rx-internal-delay-ps = <0>;
+ tx-internal-delay-ps = <0>;
iommus = <&ipmmu_ds0 16>;
#address-cells = <1>;
#size-cells = <0>;
diff --git a/arch/arm64/boot/dts/renesas/r8a77960.dtsi b/arch/arm64/boot/dts/renesas/r8a77960.dtsi
index 33bf62acffbb73d2..c4d486dce65f05d5 100644
--- a/arch/arm64/boot/dts/renesas/r8a77960.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77960.dtsi
@@ -1126,6 +1126,8 @@
power-domains = <&sysc R8A7796_PD_ALWAYS_ON>;
resets = <&cpg 812>;
phy-mode = "rgmii";
+ rx-internal-delay-ps = <0>;
+ tx-internal-delay-ps = <0>;
iommus = <&ipmmu_ds0 16>;
#address-cells = <1>;
#size-cells = <0>;
diff --git a/arch/arm64/boot/dts/renesas/r8a77961.dtsi b/arch/arm64/boot/dts/renesas/r8a77961.dtsi
index 760e738b75b3da9a..78fd532335b37616 100644
--- a/arch/arm64/boot/dts/renesas/r8a77961.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77961.dtsi
@@ -923,6 +923,8 @@
power-domains = <&sysc R8A77961_PD_ALWAYS_ON>;
resets = <&cpg 812>;
phy-mode = "rgmii";
+ rx-internal-delay-ps = <0>;
+ tx-internal-delay-ps = <0>;
#address-cells = <1>;
#size-cells = <0>;
status = "disabled";
diff --git a/arch/arm64/boot/dts/renesas/r8a77965.dtsi b/arch/arm64/boot/dts/renesas/r8a77965.dtsi
index 6f7ab39fd2824b46..deae4e86fc32824c 100644
--- a/arch/arm64/boot/dts/renesas/r8a77965.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77965.dtsi
@@ -988,6 +988,8 @@
power-domains = <&sysc R8A77965_PD_ALWAYS_ON>;
resets = <&cpg 812>;
phy-mode = "rgmii";
+ rx-internal-delay-ps = <0>;
+ tx-internal-delay-ps = <0>;
iommus = <&ipmmu_ds0 16>;
#address-cells = <1>;
#size-cells = <0>;
diff --git a/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts b/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts
index ac2156ab3e626174..34041cdc72ae7a5c 100644
--- a/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts
+++ b/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts
@@ -81,7 +81,8 @@
renesas,no-ether-link;
phy-handle = <&phy0>;
- phy-mode = "rgmii-id";
+ rx-internal-delay-ps = <1800>;
+ tx-internal-delay-ps = <2000>;
status = "okay";
phy0: ethernet-phy@0 {
diff --git a/arch/arm64/boot/dts/renesas/r8a77970-v3msk.dts b/arch/arm64/boot/dts/renesas/r8a77970-v3msk.dts
index 01c4ba0f7be1caff..d108cd28097b078b 100644
--- a/arch/arm64/boot/dts/renesas/r8a77970-v3msk.dts
+++ b/arch/arm64/boot/dts/renesas/r8a77970-v3msk.dts
@@ -102,7 +102,8 @@
renesas,no-ether-link;
phy-handle = <&phy0>;
- phy-mode = "rgmii-id";
+ rx-internal-delay-ps = <1800>;
+ tx-internal-delay-ps = <2000>;
status = "okay";
phy0: ethernet-phy@0 {
diff --git a/arch/arm64/boot/dts/renesas/r8a77970.dtsi b/arch/arm64/boot/dts/renesas/r8a77970.dtsi
index bd95ecb1b40d8f4d..c02b502072045b3f 100644
--- a/arch/arm64/boot/dts/renesas/r8a77970.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77970.dtsi
@@ -615,6 +615,8 @@
power-domains = <&sysc R8A77970_PD_ALWAYS_ON>;
resets = <&cpg 812>;
phy-mode = "rgmii";
+ rx-internal-delay-ps = <0>;
+ tx-internal-delay-ps = <0>;
iommus = <&ipmmu_rt 3>;
#address-cells = <1>;
#size-cells = <0>;
diff --git a/arch/arm64/boot/dts/renesas/r8a77980.dtsi b/arch/arm64/boot/dts/renesas/r8a77980.dtsi
index 387e6d99f2f365f0..6ffac04152da80cb 100644
--- a/arch/arm64/boot/dts/renesas/r8a77980.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77980.dtsi
@@ -667,6 +667,8 @@
power-domains = <&sysc R8A77980_PD_ALWAYS_ON>;
resets = <&cpg 812>;
phy-mode = "rgmii";
+ rx-internal-delay-ps = <0>;
+ tx-internal-delay-ps = <2000>;
iommus = <&ipmmu_ds1 33>;
#address-cells = <1>;
#size-cells = <0>;
diff --git a/arch/arm64/boot/dts/renesas/r8a77990.dtsi b/arch/arm64/boot/dts/renesas/r8a77990.dtsi
index cd11f24744d4af55..284b1c50a9481b43 100644
--- a/arch/arm64/boot/dts/renesas/r8a77990.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77990.dtsi
@@ -938,6 +938,7 @@
power-domains = <&sysc R8A77990_PD_ALWAYS_ON>;
resets = <&cpg 812>;
phy-mode = "rgmii";
+ rx-internal-delay-ps = <0>;
iommus = <&ipmmu_ds0 16>;
#address-cells = <1>;
#size-cells = <0>;
diff --git a/arch/arm64/boot/dts/renesas/r8a77995.dtsi b/arch/arm64/boot/dts/renesas/r8a77995.dtsi
index e5617ec0f49cb6de..41252ecd6f60d940 100644
--- a/arch/arm64/boot/dts/renesas/r8a77995.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77995.dtsi
@@ -628,6 +628,7 @@
power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
resets = <&cpg 812>;
phy-mode = "rgmii";
+ rx-internal-delay-ps = <1800>;
iommus = <&ipmmu_ds0 16>;
#address-cells = <1>;
#size-cells = <0>;
diff --git a/arch/arm64/boot/dts/renesas/salvator-common.dtsi b/arch/arm64/boot/dts/renesas/salvator-common.dtsi
index 98bbcafc8c0d030c..93935b77e464d922 100644
--- a/arch/arm64/boot/dts/renesas/salvator-common.dtsi
+++ b/arch/arm64/boot/dts/renesas/salvator-common.dtsi
@@ -324,7 +324,7 @@
pinctrl-0 = <&avb_pins>;
pinctrl-names = "default";
phy-handle = <&phy0>;
- phy-mode = "rgmii-txid";
+ tx-internal-delay-ps = <2000>;
status = "okay";
phy0: ethernet-phy@0 {
diff --git a/arch/arm64/boot/dts/renesas/ulcb.dtsi b/arch/arm64/boot/dts/renesas/ulcb.dtsi
index ff88af8e39d3fa10..bd4efdf91afca42b 100644
--- a/arch/arm64/boot/dts/renesas/ulcb.dtsi
+++ b/arch/arm64/boot/dts/renesas/ulcb.dtsi
@@ -144,7 +144,7 @@
pinctrl-0 = <&avb_pins>;
pinctrl-names = "default";
phy-handle = <&phy0>;
- phy-mode = "rgmii-txid";
+ tx-internal-delay-ps = <2000>;
status = "okay";
phy0: ethernet-phy@0 {
--
2.17.1
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