[openwrt/openwrt] ramips: mt7621-dts: fix claiming rgmii2 pin group for EdgeRouter X SFP

[LEDE Commits]

chunkeey pushed a commit to openwrt/openwrt.git, branch openwrt-22.03:
https://git.openwrt.org/7bc1d7641995ede3a0360242cc08d69269daa18e

commit 7bc1d7641995ede3a0360242cc08d69269daa18e
Author: Arınç ÜNAL <arinc.unal at arinc9.com>
AuthorDate: Thu Mar 17 16:10:08 2022 +0300

    ramips: mt7621-dts: fix claiming rgmii2 pin group for EdgeRouter X SFP
    
    For a TX->TX connected external phy to transmit/receive data, the rgmii2
    pin group needs to be claimed with gpio function, at least for EdgeRouter X
    SFP. We already claim the pin group under the pinctrl node with gpio
    function on the gpio node on mt7621_ubnt_edgerouter-x.dtsi.
    
    However, we should claim a pin group under its consumer node. It's the
    ethernet node in this case, which we already claim the rgmii2 pin group
    under it on mt7621.dtsi. Therefore, set the function as gpio on the rgmii2
    node for EdgeRouter X SFP and get rid of claiming the rgmii2 pin group
    under the pinctrl node. With this change, we also get to remove a
    definition from mt7621_ubnt_edgerouter-x.dtsi which is specific to
    EdgeRouter X SFP.
    
    This change is tested on an EdgeRouter X SFP.
    
    Signed-off-by: Arınç ÜNAL <arinc.unal at arinc9.com>
    (cherry picked from commit a1ad8377355c41a7cc3012b707fcecab923cbc90)
---
 target/linux/ramips/dts/mt7621_ubnt_edgerouter-x-sfp.dts | 6 ++++++
 target/linux/ramips/dts/mt7621_ubnt_edgerouter-x.dtsi    | 6 +-----
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/target/linux/ramips/dts/mt7621_ubnt_edgerouter-x-sfp.dts b/target/linux/ramips/dts/mt7621_ubnt_edgerouter-x-sfp.dts
index 897aa90ea3..c00eb52c7c 100644
--- a/target/linux/ramips/dts/mt7621_ubnt_edgerouter-x-sfp.dts
+++ b/target/linux/ramips/dts/mt7621_ubnt_edgerouter-x-sfp.dts
@@ -59,6 +59,12 @@
 	};
 };
 
+&rgmii2_pins {
+	rgmii2 {
+		function = "gpio";
+	};
+};
+
 &switch0 {
 	ports {
 		port at 5 {
diff --git a/target/linux/ramips/dts/mt7621_ubnt_edgerouter-x.dtsi b/target/linux/ramips/dts/mt7621_ubnt_edgerouter-x.dtsi
index dcc84d7ccc..95cf3d2ccd 100644
--- a/target/linux/ramips/dts/mt7621_ubnt_edgerouter-x.dtsi
+++ b/target/linux/ramips/dts/mt7621_ubnt_edgerouter-x.dtsi
@@ -19,10 +19,6 @@
 	};
 };
 
-&ethernet {
-	pinctrl-0 = <&mdio_pins>, <&rgmii1_pins>;
-};
-
 &gmac0 {
 	nvmem-cells = <&macaddr_factory_22>;
 	nvmem-cell-names = "mac-address";
@@ -114,7 +110,7 @@
 
 &state_default {
 	gpio {
-		groups = "uart2", "uart3", "pcie", "rgmii2", "jtag";
+		groups = "uart2", "uart3", "pcie", "jtag";
 		function = "gpio";
 	};
 };