6.15-stable review patch. If anyone has any objections, please let me know.
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From: Sebastian Reichel sebastian.reichel@collabora.com
[ Upstream commit cd803da7c033e376a66793a43ee98e136bc6cc25 ]
Old revisions of the ROCK 4D board have a dedicated crystal to supply the RTL8211F PHY's 25MHz clock input. At least some newer revisions instead use REFCLKO25M_GMAC0_OUT. The DT already has this half-prepared, but there are some issues:
1. The DT relies on auto-selecting the right PHY driver, which requires that it works good enough to read the ID registers. This does not work without the clock, which is handled by the PHY driver. By updating the compatible to contain the RTL8211F IDs, so that the operating system can choose the right PHY driver without relying on a pre-powered PHY.
2. Despite the name REFCLKO25M_GMAC0_OUT could also provide a different frequency, so ensure it is explicitly set to 25 MHz as expected by the PHY.
3. While at it switch from deprecated "enable-gpio" to standard "enable-gpios".
Fixes: a0fb7eca9c09 ("arm64: dts: rockchip: Add Radxa ROCK 4D device tree") Signed-off-by: Sebastian Reichel sebastian.reichel@collabora.com Link: https://lore.kernel.org/r/20250704-rk3576-rock4d-phy-handling-fixes-v1-1-1d6... Signed-off-by: Heiko Stuebner heiko@sntech.de Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts b/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts index 6756403111e7..0a93853cdf43 100644 --- a/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts +++ b/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts @@ -641,14 +641,16 @@ hym8563: rtc@51 {
&mdio0 { rgmii_phy0: ethernet-phy@1 { - compatible = "ethernet-phy-ieee802.3-c22"; + compatible = "ethernet-phy-id001c.c916"; reg = <0x1>; clocks = <&cru REFCLKO25M_GMAC0_OUT>; + assigned-clocks = <&cru REFCLKO25M_GMAC0_OUT>; + assigned-clock-rates = <25000000>; pinctrl-names = "default"; pinctrl-0 = <&rtl8211f_rst>; reset-assert-us = <20000>; reset-deassert-us = <100000>; - reset-gpio = <&gpio2 RK_PB5 GPIO_ACTIVE_LOW>; + reset-gpios = <&gpio2 RK_PB5 GPIO_ACTIVE_LOW>; }; };