Re: [PATCH 3/4] arm64: dts: meson: use the generic Ethernet PHY reset GPIO bindings

From: Robin Murphy
Date: Mon Jun 10 2019 - 12:59:02 EST

Hi Martin,

On 10/06/2019 17:37, Martin Blumenstingl wrote:
The snps,reset-gpio bindings are deprecated in favour of the generic
"Ethernet PHY reset" bindings.

Replace snps,reset-gpio from the &ethmac node with reset-gpios in the
ethernet-phy node. The old snps,reset-active-low property is now encoded
directly as GPIO flag inside the reset-gpios property.

snps,reset-delays-us is converted to reset-assert-us and
reset-deassert-us. reset-assert-us is the second cell from
snps,reset-delays-us while reset-deassert-us was the third cell.

Instead of blindly copying the old values (which seems strange since
they gave the PHY one second to come out of reset) over this also
updates the delays based on the datasheets:
- the Realtek RTL8211F PHY needs a 10ms delay (this applies to the
following boards: GXBB NanoPi K2, GXBB Odroid-C2, GXBB Vega S95
variants, GXBB Wetek variants, GXL P230, GXM Khadas VIM2, GXM Nexbox
A1, GXM Q200, GXM RBox Pro)

From the datasheets I've seen, RTL8211E/F specify an assert delay of 10ms, but a deassert delay of 30ms.

Robin.

- the ICPlus IP101GR PHY needs a 2.5ms delay (this applies to the GXBB
Nexbox A95X)
- the Micrel KSZ9031 seems to require a 100us delay but use the same
(seemingly safe) values from RTL8211F due to lack of a board to verify
this (this appleis to the GXBB P200)

The GXBB P201 board is left out from this conversion because it doesn't
have a dedicated PHY node (because it's not clear which PHY is used on
that board).

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
---
arch/arm64/boot/dts/amlogic/meson-gxbb-nanopi-k2.dts | 9 +++++----
.../arm64/boot/dts/amlogic/meson-gxbb-nexbox-a95x.dts | 8 ++++----
arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts | 9 +++++----
arch/arm64/boot/dts/amlogic/meson-gxbb-p200.dts | 9 +++++----
arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95.dtsi | 9 +++++----
arch/arm64/boot/dts/amlogic/meson-gxbb-wetek.dtsi | 8 ++++----
arch/arm64/boot/dts/amlogic/meson-gxl-s905d-p230.dts | 11 ++++++-----
arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts | 10 +++++-----
arch/arm64/boot/dts/amlogic/meson-gxm-nexbox-a1.dts | 8 ++++----
arch/arm64/boot/dts/amlogic/meson-gxm-q200.dts | 11 ++++++-----
arch/arm64/boot/dts/amlogic/meson-gxm-rbox-pro.dts | 8 ++++----
11 files changed, 53 insertions(+), 47 deletions(-)

diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-nanopi-k2.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-nanopi-k2.dts
index 849c01650c4d..32e901538519 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-nanopi-k2.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-nanopi-k2.dts
@@ -154,10 +154,6 @@
amlogic,tx-delay-ns = <2>;
- snps,reset-gpio = <&gpio GPIOZ_14 0>;
- snps,reset-delays-us = <0 10000 1000000>;
- snps,reset-active-low;
-
mdio {
compatible = "snps,dwmac-mdio";
#address-cells = <1>;
@@ -166,6 +162,11 @@
eth_phy0: ethernet-phy@0 {
/* Realtek RTL8211F (0x001cc916) */
reg = <0>;
+
+ reset-assert-us = <10000>;
+ reset-deassert-us = <10000>;
+ reset-gpios = <&gpio GPIOZ_14 GPIO_ACTIVE_LOW>;
+
interrupt-parent = <&gpio_intc>;
/* MAC_INTR on GPIOZ_15 */
interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-nexbox-a95x.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-nexbox-a95x.dts
index 3c54f26eef15..c2f619a6a96c 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-nexbox-a95x.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-nexbox-a95x.dts
@@ -162,10 +162,6 @@
phy-handle = <&eth_phy0>;
phy-mode = "rmii";
- snps,reset-gpio = <&gpio GPIOZ_14 0>;
- snps,reset-delays-us = <0 10000 1000000>;
- snps,reset-active-low;
-
mdio {
compatible = "snps,dwmac-mdio";
#address-cells = <1>;
@@ -174,6 +170,10 @@
eth_phy0: ethernet-phy@0 {
/* IC Plus IP101GR (0x02430c54) */
reg = <0>;
+
+ reset-assert-us = <2500>;
+ reset-deassert-us = <2500>;
+ reset-gpios = <&gpio GPIOZ_14 GPIO_ACTIVE_LOW>;
};
};
};
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
index 5a139e7b1c60..fc0528a89b6c 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
@@ -126,10 +126,6 @@
phy-handle = <&eth_phy0>;
phy-mode = "rgmii";
- snps,reset-gpio = <&gpio GPIOZ_14 0>;
- snps,reset-delays-us = <0 10000 1000000>;
- snps,reset-active-low;
-
amlogic,tx-delay-ns = <2>;
mdio {
@@ -140,6 +136,11 @@
eth_phy0: ethernet-phy@0 {
/* Realtek RTL8211F (0x001cc916) */
reg = <0>;
+
+ reset-assert-us = <10000>;
+ reset-deassert-us = <10000>;
+ reset-gpios = <&gpio GPIOZ_14 GPIO_ACTIVE_LOW>;
+
interrupt-parent = <&gpio_intc>;
/* MAC_INTR on GPIOZ_15 */
interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-p200.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-p200.dts
index 9d2406a7c4fa..eeea17767cab 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-p200.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-p200.dts
@@ -68,10 +68,6 @@
amlogic,tx-delay-ns = <2>;
- snps,reset-gpio = <&gpio GPIOZ_14 0>;
- snps,reset-delays-us = <0 10000 1000000>;
- snps,reset-active-low;
-
mdio {
compatible = "snps,dwmac-mdio";
#address-cells = <1>;
@@ -80,6 +76,11 @@
eth_phy0: ethernet-phy@3 {
/* Micrel KSZ9031 (0x00221620) */
reg = <3>;
+
+ reset-assert-us = <10000>;
+ reset-deassert-us = <10000>;
+ reset-gpios = <&gpio GPIOZ_14 GPIO_ACTIVE_LOW>;
+
interrupt-parent = <&gpio_intc>;
/* MAC_INTR on GPIOZ_15 */
interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95.dtsi
index 18856f28fd60..a7c2d8bfdd0b 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95.dtsi
@@ -116,10 +116,6 @@
amlogic,tx-delay-ns = <2>;
- snps,reset-gpio = <&gpio GPIOZ_14 0>;
- snps,reset-delays-us = <0 10000 1000000>;
- snps,reset-active-low;
-
mdio {
compatible = "snps,dwmac-mdio";
#address-cells = <1>;
@@ -128,6 +124,11 @@
eth_phy0: ethernet-phy@0 {
/* Realtek RTL8211F (0x001cc916) */
reg = <0>;
+
+ reset-assert-us = <10000>;
+ reset-deassert-us = <10000>;
+ reset-gpios = <&gpio GPIOZ_14 GPIO_ACTIVE_LOW>;
+
interrupt-parent = <&gpio_intc>;
/* MAC_INTR on GPIOZ_15 */
interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-wetek.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb-wetek.dtsi
index 9ef6858779c1..dc0d8c3b4eff 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-wetek.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-wetek.dtsi
@@ -137,10 +137,6 @@
amlogic,tx-delay-ns = <2>;
- snps,reset-gpio = <&gpio GPIOZ_14 0>;
- snps,reset-delays-us = <0 10000 1000000>;
- snps,reset-active-low;
-
mdio {
compatible = "snps,dwmac-mdio";
#address-cells = <1>;
@@ -149,6 +145,10 @@
eth_phy0: ethernet-phy@0 {
/* Realtek RTL8211F (0x001cc916) */
reg = <0>;
+
+ reset-assert-us = <10000>;
+ reset-deassert-us = <10000>;
+ reset-gpios = <&gpio GPIOZ_14 GPIO_ACTIVE_LOW>;
};
};
};
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl-s905d-p230.dts b/arch/arm64/boot/dts/amlogic/meson-gxl-s905d-p230.dts
index 767b1763a612..003d6aa6964c 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxl-s905d-p230.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxl-s905d-p230.dts
@@ -70,11 +70,6 @@
amlogic,tx-delay-ns = <2>;
- /* External PHY reset is shared with internal PHY Led signals */
- snps,reset-gpio = <&gpio GPIOZ_14 0>;
- snps,reset-delays-us = <0 10000 1000000>;
- snps,reset-active-low;
-
/* External PHY is in RGMII */
phy-mode = "rgmii";
};
@@ -84,6 +79,12 @@
/* Realtek RTL8211F (0x001cc916) */
reg = <0>;
max-speed = <1000>;
+
+ /* External PHY reset is shared with internal PHY Led signal */
+ reset-assert-us = <10000>;
+ reset-deassert-us = <10000>;
+ reset-gpios = <&gpio GPIOZ_14 GPIO_ACTIVE_LOW>;
+
interrupt-parent = <&gpio_intc>;
interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
eee-broken-1000t;
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts b/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts
index ff4f0780824d..2b6003b605a4 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts
@@ -239,11 +239,6 @@
amlogic,tx-delay-ns = <2>;
- /* External PHY reset is shared with internal PHY Led signals */
- snps,reset-gpio = <&gpio GPIOZ_14 0>;
- snps,reset-delays-us = <0 10000 1000000>;
- snps,reset-active-low;
-
/* External PHY is in RGMII */
phy-mode = "rgmii";
@@ -254,6 +249,11 @@
external_phy: ethernet-phy@0 {
/* Realtek RTL8211F (0x001cc916) */
reg = <0>;
+
+ reset-assert-us = <10000>;
+ reset-deassert-us = <10000>;
+ reset-gpios = <&gpio GPIOZ_14 GPIO_ACTIVE_LOW>;
+
interrupt-parent = <&gpio_intc>;
/* MAC_INTR on GPIOZ_15 */
interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxm-nexbox-a1.dts b/arch/arm64/boot/dts/amlogic/meson-gxm-nexbox-a1.dts
index 29715eae14a9..a2a7ec5c8fd6 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxm-nexbox-a1.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxm-nexbox-a1.dts
@@ -101,10 +101,6 @@
amlogic,tx-delay-ns = <2>;
- snps,reset-gpio = <&gpio GPIOZ_14 0>;
- snps,reset-delays-us = <0 10000 1000000>;
- snps,reset-active-low;
-
/* External PHY is in RGMII */
phy-mode = "rgmii";
};
@@ -114,6 +110,10 @@
/* Realtek RTL8211F (0x001cc916) */
reg = <0>;
max-speed = <1000>;
+
+ reset-assert-us = <10000>;
+ reset-deassert-us = <10000>;
+ reset-gpios = <&gpio GPIOZ_14 GPIO_ACTIVE_LOW>;
};
};
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxm-q200.dts b/arch/arm64/boot/dts/amlogic/meson-gxm-q200.dts
index 8939c0fc5b62..044668228ece 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxm-q200.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxm-q200.dts
@@ -52,11 +52,6 @@
amlogic,tx-delay-ns = <2>;
- /* External PHY reset is shared with internal PHY Led signals */
- snps,reset-gpio = <&gpio GPIOZ_14 0>;
- snps,reset-delays-us = <0 10000 1000000>;
- snps,reset-active-low;
-
/* External PHY is in RGMII */
phy-mode = "rgmii";
};
@@ -66,6 +61,12 @@
/* Realtek RTL8211F (0x001cc916) */
reg = <0>;
max-speed = <1000>;
+
+ /* External PHY reset is shared with internal PHY Led signal */
+ reset-assert-us = <10000>;
+ reset-deassert-us = <10000>;
+ reset-gpios = <&gpio GPIOZ_14 GPIO_ACTIVE_LOW>;
+
interrupt-parent = <&gpio_intc>;
/* MAC_INTR on GPIOZ_15 */
interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxm-rbox-pro.dts b/arch/arm64/boot/dts/amlogic/meson-gxm-rbox-pro.dts
index 13de1e8f58b5..04eae80585af 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxm-rbox-pro.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxm-rbox-pro.dts
@@ -101,10 +101,6 @@
/* Select external PHY by default */
phy-handle = <&external_phy>;
- snps,reset-gpio = <&gpio GPIOZ_14 0>;
- snps,reset-delays-us = <0 10000 1000000>;
- snps,reset-active-low;
-
amlogic,tx-delay-ns = <2>;
/* External PHY is in RGMII */
@@ -116,6 +112,10 @@
/* Realtek RTL8211F (0x001cc916) */
reg = <0>;
max-speed = <1000>;
+
+ reset-assert-us = <10000>;
+ reset-deassert-us = <10000>;
+ reset-gpios = <&gpio GPIOZ_14 GPIO_ACTIVE_LOW>;
};
};