[PATCH 5.10 116/236] arm64: dts: renesas: rzg2: Convert EtherAVB to explicit delay handling

Greg Kroah-Hartman
2021-09-13T13:41:18Z

From: Geert Uytterhoeven <geert+renesas@glider.be>

[ Upstream commit a5200e63af57d05ed8bf0ffd9a6ffefc40e01e89 ]

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 RZ/G2 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:
- RZ/G2E does not support TX internal delay handling.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20200819134344.27813-8-geert+renesas@glider.be
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/arm64/boot/dts/renesas/beacon-renesom-som.dtsi | 3 ++-
arch/arm64/boot/dts/renesas/hihope-rzg2-ex.dtsi | 2 +-
arch/arm64/boot/dts/renesas/r8a774a1.dtsi | 2 ++
arch/arm64/boot/dts/renesas/r8a774b1.dtsi | 2 ++
arch/arm64/boot/dts/renesas/r8a774c0.dtsi | 1 +
arch/arm64/boot/dts/renesas/r8a774e1.dtsi | 2 ++
6 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/renesas/beacon-renesom-som.dtsi b/arch/arm64/boot/dts/renesas/beacon-renesom-som.dtsi
index e3773b05c403..3c73dfc430af 100644
--- a/arch/arm64/boot/dts/renesas/beacon-renesom-som.dtsi
+++ b/arch/arm64/boot/dts/renesas/beacon-renesom-som.dtsi
@@ -55,7 +55,8 @@
pinctrl-0 = <&avb_pins>;
pinctrl-names = "default";
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/hihope-rzg2-ex.dtsi b/arch/arm64/boot/dts/renesas/hihope-rzg2-ex.dtsi
index b9e46aed5336..202c4fc88bd5 100644
--- a/arch/arm64/boot/dts/renesas/hihope-rzg2-ex.dtsi
+++ b/arch/arm64/boot/dts/renesas/hihope-rzg2-ex.dtsi
@@ -19,7 +19,7 @@
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/r8a774a1.dtsi b/arch/arm64/boot/dts/renesas/r8a774a1.dtsi
index c58a0846db50..a5ebe574fbac 100644
--- a/arch/arm64/boot/dts/renesas/r8a774a1.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a774a1.dtsi
@@ -1131,6 +1131,8 @@
power-domains = <&sysc R8A774A1_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/r8a774b1.dtsi b/arch/arm64/boot/dts/renesas/r8a774b1.dtsi
index 9ebf6e58ba31..20003a41a706 100644
--- a/arch/arm64/boot/dts/renesas/r8a774b1.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a774b1.dtsi
@@ -1004,6 +1004,8 @@
power-domains = <&sysc R8A774B1_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/r8a774c0.dtsi b/arch/arm64/boot/dts/renesas/r8a774c0.dtsi
index f27d9b2eb996..e0e54342cd4c 100644
--- a/arch/arm64/boot/dts/renesas/r8a774c0.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a774c0.dtsi
@@ -960,6 +960,7 @@
power-domains = <&sysc R8A774C0_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/r8a774e1.dtsi b/arch/arm64/boot/dts/renesas/r8a774e1.dtsi
index 708258696b4f..2e6c12a46daf 100644
--- a/arch/arm64/boot/dts/renesas/r8a774e1.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a774e1.dtsi
@@ -1233,6 +1233,8 @@
power-domains = <&sysc R8A774E1_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>;
--
2.30.2