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Message-Id: <20221116200150.4657-7-linux.amoon@gmail.com>
Date:   Wed, 16 Nov 2022 20:01:48 +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 5/5] arm64: dts: rockchip: Add missing of ethernet-phy-id to reset the phy on Rock 3A SBC

Add MDIO description with ethernet-phy-id compatible string
which enable calling reset of the phy. The PHY will then be probed,
independent of if it can be found on the bus or not,
and that probing will enable the GPIO.

ethernet-phy-id is read from ethenet register dump reg2 and reg3.

Fix following warning.
[   12.323417] rk_gmac-dwmac fe010000.ethernet eth0: Register MEM_TYPE_PAGE_POOL RxQ-0
[   12.324078] rk_gmac-dwmac fe010000.ethernet eth0: no phy at addr -1
[   12.324099] rk_gmac-dwmac fe010000.ethernet eth0: __stmmac_open: Cannot attach to PHY (error: -19)

Signed-off-by: Anand Moon <linux.amoon@...il.com>
---
V2: new to the patch series.

alarm@...k-3a:~$ sudo ethtool -d eth0
[sudo] password for alarm:
ST GMAC Registers
GMAC Registers
Reg0  0x08072203
Reg1  0x00000000
Reg2  0x00000404
Reg3  0x00000000
Reg4  0x00000002
---
 arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts | 2 +-
 1 file changed, 1 insertion(+), 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 9f84a23a8789..fe36156a5017 100644
--- a/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
@@ -585,7 +585,7 @@ &i2s2_2ch {
 
 &mdio1 {
 	rgmii_phy1: ethernet-phy@0 {
-		compatible = "ethernet-phy-ieee802.3-c22";
+		compatible = "ethernet-phy-id0000.0404", "ethernet-phy-ieee802.3-c22";
 		reg = <0x0>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&eth_phy_rst>, <&eth_phy_int>;
-- 
2.38.1

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