linux-kernel - [linux-next-v2 1/5] arm64: dts: rockchip: Fix gmac phy mode to rgmii on Rock 3A SBC.

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Message-Id: <20221116200150.4657-2-linux.amoon@gmail.com>
Date:   Wed, 16 Nov 2022 20:01:43 +0000
From:   Anand Moon <linux.amoon@...il.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Heiko Stuebner <heiko@...ech.de>
Cc:     Anand Moon <linux.amoon@...il.com>,
        Chukun Pan <amadeus@....edu.cn>,
        Michael Riesch <michael.riesch@...fvision.net>,
        Peter Geis <pgwipeout@...il.com>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [linux-next-v2 1/5] arm64: dts: rockchip: Fix gmac phy mode to rgmii on Rock 3A SBC.

On rk356x ethernet phy support reduced media independent interface (RMII)
and reduced gigabit media independent interface (RGMII).
So set the phy mode to rgmii to support clock delay, also
add TX and RX delay for phy-mode.

Fix following warning

[    7.365215] rk_gmac-dwmac fe010000.ethernet: Can not read property: tx_delay.
[    7.365219] rk_gmac-dwmac fe010000.ethernet: set tx_delay to 0x30
[    7.365224] rk_gmac-dwmac fe010000.ethernet: Can not read property: rx_delay.
[    7.365228] rk_gmac-dwmac fe010000.ethernet: set rx_delay to 0x10

Signed-off-by: Anand Moon <linux.amoon@...il.com>
---
V2: Fix commit message and added the RX and TX clock delay.
---
 arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts b/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
index ea74ba32fbbd..e1c75532dcee 100644
--- a/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
@@ -253,13 +253,16 @@ &gmac1 {
 	assigned-clock-rates = <0>, <125000000>;
 	clock_in_out = "output";
 	phy-handle = <&rgmii_phy1>;
-	phy-mode = "rgmii-id";
+	phy-mode = "rgmii";
 	pinctrl-names = "default";
 	pinctrl-0 = <&gmac1m1_miim
 		     &gmac1m1_tx_bus2
 		     &gmac1m1_rx_bus2
 		     &gmac1m1_rgmii_clk
 		     &gmac1m1_rgmii_bus>;
+
+	tx_delay = <0x4f>;
+	rx_delay = <0x26>;
 	status = "okay";
 };
 
-- 
2.38.1