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From:   Martin Blumenstingl <martin.blumenstingl@googlemail.com>
To:     linux-amlogic@lists.infradead.org, khilman@baylibre.com
Cc:     linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        netdev@vger.kernel.org, linus.walleij@linaro.org, andrew@lunn.ch,
        robin.murphy@arm.com,
        Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Subject: [PATCH v2 3/4] arm64: dts: meson: use the generic Ethernet PHY reset GPIO bindings
Date:   Wed, 12 Jun 2019 22:55:28 +0200
Message-Id: <20190612205529.19834-4-martin.blumenstingl@googlemail.com>
In-Reply-To: <20190612205529.19834-1-martin.blumenstingl@googlemail.com>
References: <20190612205529.19834-1-martin.blumenstingl@googlemail.com>
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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 assert delay (the datasheet
  mentions: "For a complete PHY reset, this pin must be asserted low
  for at least 10ms") and a 30ms deassert delay (the datasheet
  mentions: "Wait for a further 30ms (for internal circuits settling
  time) before accessing the PHY register". 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 boards.
- the ICPlus IP101GR PHY needs a 10ms assert delay (the datasheet
  mentions: "Trst | Reset period | 10ms") and a deassert delay of 10ms
  as well (the datasheet mentions: "Tclk_MII_rdy | MII/RMII clock
  output ready after reset released | 10ms"). This applies to the GXBB
  Nexbox A95X board.
- 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 applies to the GXBB P200 board.

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@googlemail.com>
---
 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..c34c1c90ccb6 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 = <30000>;
+			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..b636912a2715 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 = <10000>;
+			reset-deassert-us = <10000>;
+			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..9972b1515da6 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 = <30000>;
+			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..3c93d1898b40 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 = <30000>;
+			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..43b11e3dfe11 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 = <30000>;
+			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..4c539881fbb7 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 = <30000>;
+			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..b08c4537f260 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 = <30000>;
+		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..989d33ac6eae 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 = <30000>;
+		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..c2bd4dbbf38c 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 = <30000>;
+		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..ea45ae0c71b7 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 = <30000>;
+		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..5cd4d35006d0 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 = <30000>;
+		reset-gpios = <&gpio GPIOZ_14 GPIO_ACTIVE_LOW>;
 	};
 };
 
-- 
2.22.0