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Markus Stockhausen 945a335f66 realtek: ethernet: Improve SMI polling configuration based on DTS
Although Zyxel XGS1210 devices are not yet officially supported there
are several patches floating around to enable them. This is a very imporant
one because it fixes a SMI misconfiguration. In the known DTS the SFP+
port settings are set as follows.

  phy26: ethernet-phy@26 {
    compatible = "ethernet-phy-ieee802.3-c45";
    phy-is-integrated;
    reg = <26>;
    sds = < 8 >;
  };

  phy27: ethernet-phy@27 {
    compatible = "ethernet-phy-ieee802.3-c45";
    phy-is-integrated;
    reg = <27>;
    sds = < 9 >;
  };

So these are PHYs linked to an internal SerDes. During initialization
rtl838x_mdio_init() generates smi_bus=0 & smi_addr=27/28 for these ports.
Although this seems like a valid configuration integrated PHYs attached
to an SerDes do not have an SMI bus. Later on the mdio reset wrongly feeds
the SMI registers and as a result the PHYs on SMI bus 0 do not work.

Without patch (loaded with rtk network on & initramfs):

...
mdio_bus mdio-bus: MDIO device at address 0 is missing.
mdio_bus mdio-bus: MDIO device at address 1 is missing.
mdio_bus mdio-bus: MDIO device at address 2 is missing.
mdio_bus mdio-bus: MDIO device at address 3 is missing.
mdio_bus mdio-bus: MDIO device at address 4 is missing.
mdio_bus mdio-bus: MDIO device at address 5 is missing.
mdio_bus mdio-bus: MDIO device at address 6 is missing.
mdio_bus mdio-bus: MDIO device at address 7 is missing.
...
rtl83xx-switch ... : no phy at 0
rtl83xx-switch ... : failed to connect to PHY: -ENODEV
rtl83xx-switch ... : error -19 setting up PHY for tree 0, switch 0, port 0
rtl83xx-switch ... : no phy at 1
rtl83xx-switch ... : failed to connect to PHY: -ENODEV
rtl83xx-switch ... : error -19 setting up PHY for tree 0, switch 0, port 1
...

With patch (loaded with rtk network on & initramfs):

...
rtl83xx-switch ... : PHY [mdio-bus:00] driver [REALTEK RTL8218D] (irq=POLL)
rtl83xx-switch ... : PHY [mdio-bus:01] driver [REALTEK RTL8218D] (irq=POLL)
...

Signed-off-by: Birger Koblitz <git@birger-koblitz.de>
Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Link: https://github.com/openwrt/openwrt/pull/16457
Signed-off-by: Robert Marko <robimarko@gmail.com>
2024-10-27 22:26:25 +01:00
.devcontainer/ci-env devcontainer: Add development environment for gihub codespace 2023-10-30 23:34:26 +01:00
.github CI: labeler: Add new targets 2024-09-28 18:36:21 +02:00
.vscode meta: VS Code: add "Git: Always Sign Off" setting 2024-10-03 17:18:51 +02:00
config kernel: enable Multi-Path TCP for !SMALL_FLASH targets 2024-10-26 15:21:03 +01:00
include include/package-pack: Set missing Maintainer and URL for APK 2024-10-24 12:46:47 +02:00
LICENSES
package uboot-rockchip: add support for NanoPi R3S 2024-10-27 14:57:51 +01:00
scripts Revert "scripts/download.pl: read file natively" 2024-10-27 15:58:16 +01:00
target realtek: ethernet: Improve SMI polling configuration based on DTS 2024-10-27 22:26:25 +01:00
toolchain toolchain/binutils: remove old versions 2024-10-12 22:12:39 +02:00
tools tools: firmware-utils: update to Git HEAD (2024-10-20) 2024-10-20 23:59:51 +02:00
.gitattributes
.gitignore gitignore: ignore local APK keys 2024-05-17 22:03:06 +03:00
BSDmakefile
Config.in
COPYING
feeds.conf.default
Makefile build: include tests/Makefile if available 2024-06-17 17:51:31 +02:00
README.md README: replace "MacOSX" with "macOS" 2024-04-01 18:46:30 +02:00
rules.mk build: let HOST_CXXFLAGS default to HOST_CFLAGS 2024-07-08 08:49:43 +02:00

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