linux-kernel - [PATCH v2] arm64: dts: rockchip: Delete redundant RK3328 GMAC stability fixes

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Message-Id: <fe05ecccc9fe27a678ad3e700ea022429f659724.1733943615.git.dsimic@manjaro.org>
Date: Wed, 11 Dec 2024 21:40:52 +0100
From: Dragan Simic <dsimic@...jaro.org>
To: linux-rockchip@...ts.infradead.org
Cc: heiko@...ech.de,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	Peter Geis <pgwipeout@...il.com>
Subject: [PATCH v2] arm64: dts: rockchip: Delete redundant RK3328 GMAC stability fixes

Since the commit 8a469ee35606 ("arm64: dts: rockchip: Add txpbl node for
RK3399/RK3328"), having "snps,txpbl" properties defined as Ethernet stability
fixes in RK3328-based board dts(i) files is redundant, because that commit
added the required fix to the RK3328 SoC dtsi, so let's delete them.

It has been determined that the Ethernet stability fixes no longer require
"snps,rxpbl", "snps,aal" and "snps,force_thresh_dma_mode" properties, [1][2]
out of which the last two also induce performance penalties, so let's delete
these properties from the relevant RK3328-based board dts(i) files.

This commit completes the removal of these redundant "snps,*" DT properties
that was started by a patch from Peter Geis. [3]

[1] https://lore.kernel.org/linux-rockchip/CAMdYzYpj3d7Rq0O0QjV4r6HEf_e07R0QAhPT2NheZdQV3TnQ6g@mail.gmail.com/
[2] https://lore.kernel.org/linux-rockchip/CAMdYzYpnx=pHJ+oqshgfZFp=Mfqp3TcMmEForqJ+s9KuhkgnqA@mail.gmail.com/
[3] https://lore.kernel.org/linux-rockchip/20241210013010.81257-7-pgwipeout@gmail.com/

Cc: Peter Geis <pgwipeout@...il.com>
Acked-by: Peter Geis <pgwipeout@...il.com>
Signed-off-by: Dragan Simic <dsimic@...jaro.org>
---

Notes:
    Changes in v2:
      - Added "snps,force_thresh_dma_mode" to the set of redundant properties
        deleted from RK3328 board dts(i) files, as suggested by Peter, [2] and
        updated the patch description to reflect the set extension
      - Collected Acked-by tag from Peter [2]
    
    Link to v1: https://lore.kernel.org/linux-rockchip/e00f08d2351e82d6acd56271a68c7ed05b3362e8.1733901896.git.dsimic@manjaro.org/T/#u

 arch/arm64/boot/dts/rockchip/rk3328-a1.dts                | 1 -
 arch/arm64/boot/dts/rockchip/rk3328-nanopi-r2.dtsi        | 1 -
 arch/arm64/boot/dts/rockchip/rk3328-orangepi-r1-plus.dtsi | 1 -
 arch/arm64/boot/dts/rockchip/rk3328-rock-pi-e.dts         | 3 ---
 arch/arm64/boot/dts/rockchip/rk3328-rock64.dts            | 1 -
 5 files changed, 7 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3328-a1.dts b/arch/arm64/boot/dts/rockchip/rk3328-a1.dts
index 824183e515da..24baaa7f1d8c 100644
--- a/arch/arm64/boot/dts/rockchip/rk3328-a1.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3328-a1.dts
@@ -110,7 +110,6 @@ &gmac2io {
 	phy-supply = <&vcc_io>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&rgmiim1_pins>;
-	snps,aal;
 	snps,pbl = <0x4>;
 	tx_delay = <0x26>;
 	rx_delay = <0x11>;
diff --git a/arch/arm64/boot/dts/rockchip/rk3328-nanopi-r2.dtsi b/arch/arm64/boot/dts/rockchip/rk3328-nanopi-r2.dtsi
index f9fab35aed23..d5f129e304e5 100644
--- a/arch/arm64/boot/dts/rockchip/rk3328-nanopi-r2.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3328-nanopi-r2.dtsi
@@ -142,7 +142,6 @@ &gmac2io {
 	phy-supply = <&vcc_io_33>;
 	pinctrl-0 = <&rgmiim1_pins>;
 	pinctrl-names = "default";
-	snps,aal;
 
 	mdio {
 		compatible = "snps,dwmac-mdio";
diff --git a/arch/arm64/boot/dts/rockchip/rk3328-orangepi-r1-plus.dtsi b/arch/arm64/boot/dts/rockchip/rk3328-orangepi-r1-plus.dtsi
index 181ec6de0019..9ec93f61433e 100644
--- a/arch/arm64/boot/dts/rockchip/rk3328-orangepi-r1-plus.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3328-orangepi-r1-plus.dtsi
@@ -113,7 +113,6 @@ &gmac2io {
 	phy-supply = <&vcc_io>;
 	pinctrl-0 = <&rgmiim1_pins>;
 	pinctrl-names = "default";
-	snps,aal;
 
 	mdio {
 		compatible = "snps,dwmac-mdio";
diff --git a/arch/arm64/boot/dts/rockchip/rk3328-rock-pi-e.dts b/arch/arm64/boot/dts/rockchip/rk3328-rock-pi-e.dts
index 3e08e2fd0a78..59dead1cc503 100644
--- a/arch/arm64/boot/dts/rockchip/rk3328-rock-pi-e.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3328-rock-pi-e.dts
@@ -153,9 +153,6 @@ &gmac2io {
 	phy-supply = <&vcc_io>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&rgmiim1_pins>;
-	snps,aal;
-	snps,rxpbl = <0x4>;
-	snps,txpbl = <0x4>;
 	tx_delay = <0x26>;
 	rx_delay = <0x11>;
 	status = "okay";
diff --git a/arch/arm64/boot/dts/rockchip/rk3328-rock64.dts b/arch/arm64/boot/dts/rockchip/rk3328-rock64.dts
index 90fef766f3ae..2ed602d44ec8 100644
--- a/arch/arm64/boot/dts/rockchip/rk3328-rock64.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3328-rock64.dts
@@ -144,7 +144,6 @@ &gmac2io {
 	phy-mode = "rgmii";
 	pinctrl-names = "default";
 	pinctrl-0 = <&rgmiim1_pins>;
-	snps,force_thresh_dma_mode;
 	snps,reset-gpio = <&gpio1 RK_PC2 GPIO_ACTIVE_LOW>;
 	snps,reset-active-low;
 	snps,reset-delays-us = <0 10000 50000>;