Add DT device node of mdio multiplexer device for cv18xx SoC.
Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
---
arch/riscv/boot/dts/sophgo/cv180x.dtsi | 29 ++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
diff --git a/arch/riscv/boot/dts/sophgo/cv180x.dtsi b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
index 7eecc67f896e..3a82cc40ea1a 100644
--- a/arch/riscv/boot/dts/sophgo/cv180x.dtsi
+++ b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
@@ -31,6 +31,33 @@ rst: reset-controller@3003000 {
#reset-cells = <1>;
};
+ mdio: mdio@3009800 {
+ compatible = "mdio-mux-mmioreg", "mdio-mux";
+ reg = <0x3009800 0x4>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ mdio-parent-bus = <&gmac0_mdio>;
+ mux-mask = <0x80>;
+ status = "disabled";
+
+ internal_mdio: mdio@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0>;
+
+ internal_ephy: phy@0 {
+ compatible = "ethernet-phy-ieee802.3-c22";
+ reg = <1>;
+ };
+ };
+
+ external_mdio: mdio@80 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x80>;
+ };
+ };
+
gpio0: gpio@3020000 {
compatible = "snps,dw-apb-gpio";
reg = <0x3020000 0x1000>;
@@ -196,6 +223,8 @@ gmac0: ethernet@4070000 {
clock-names = "stmmaceth", "ptp_ref";
interrupts = <SOC_PERIPHERAL_IRQ(15) IRQ_TYPE_LEVEL_HIGH>;
interrupt-names = "macirq";
+ phy-handle = <&internal_ephy>;
+ phy-mode = "internal";
resets = <&rst RST_ETH0>;
reset-names = "stmmaceth";
rx-fifo-depth = <8192>;
--
2.50.0
On Wed, Jul 2, 2025 at 9:16 PM Inochi Amaoto <inochiama@gmail.com> wrote: > > Add DT device node of mdio multiplexer device for cv18xx SoC. This adds a dtbs_check warning: mdio@3009800 (mdio-mux-mmioreg): mdio@80:reg:0:0: 128 is greater than the maximum of 31 > > Signed-off-by: Inochi Amaoto <inochiama@gmail.com> > --- > arch/riscv/boot/dts/sophgo/cv180x.dtsi | 29 ++++++++++++++++++++++++++ > 1 file changed, 29 insertions(+) > > diff --git a/arch/riscv/boot/dts/sophgo/cv180x.dtsi b/arch/riscv/boot/dts/sophgo/cv180x.dtsi > index 7eecc67f896e..3a82cc40ea1a 100644 > --- a/arch/riscv/boot/dts/sophgo/cv180x.dtsi > +++ b/arch/riscv/boot/dts/sophgo/cv180x.dtsi > @@ -31,6 +31,33 @@ rst: reset-controller@3003000 { > #reset-cells = <1>; > }; > > + mdio: mdio@3009800 { The nodename is wrong here because this is not an MDIO bus. It is a mux. So "mdio-mux@..." for the node name. > + compatible = "mdio-mux-mmioreg", "mdio-mux"; > + reg = <0x3009800 0x4>; > + #address-cells = <1>; > + #size-cells = <0>; > + mdio-parent-bus = <&gmac0_mdio>; > + mux-mask = <0x80>; > + status = "disabled"; > + > + internal_mdio: mdio@0 { > + #address-cells = <1>; > + #size-cells = <0>; > + reg = <0>; > + > + internal_ephy: phy@0 { > + compatible = "ethernet-phy-ieee802.3-c22"; > + reg = <1>; > + }; > + }; > + > + external_mdio: mdio@80 { > + #address-cells = <1>; > + #size-cells = <0>; > + reg = <0x80>; > + }; > + }; > + > gpio0: gpio@3020000 { > compatible = "snps,dw-apb-gpio"; > reg = <0x3020000 0x1000>; > @@ -196,6 +223,8 @@ gmac0: ethernet@4070000 { > clock-names = "stmmaceth", "ptp_ref"; > interrupts = <SOC_PERIPHERAL_IRQ(15) IRQ_TYPE_LEVEL_HIGH>; > interrupt-names = "macirq"; > + phy-handle = <&internal_ephy>; > + phy-mode = "internal"; > resets = <&rst RST_ETH0>; > reset-names = "stmmaceth"; > rx-fifo-depth = <8192>; > -- > 2.50.0 >
On Tue, Jul 15, 2025 at 12:43:35PM -0500, Rob Herring wrote: > On Wed, Jul 2, 2025 at 9:16 PM Inochi Amaoto <inochiama@gmail.com> wrote: > > > > Add DT device node of mdio multiplexer device for cv18xx SoC. > > This adds a dtbs_check warning: > > mdio@3009800 (mdio-mux-mmioreg): mdio@80:reg:0:0: 128 is greater than > the maximum of 31 > > > > > Signed-off-by: Inochi Amaoto <inochiama@gmail.com> > > --- > > arch/riscv/boot/dts/sophgo/cv180x.dtsi | 29 ++++++++++++++++++++++++++ > > 1 file changed, 29 insertions(+) > > > > diff --git a/arch/riscv/boot/dts/sophgo/cv180x.dtsi b/arch/riscv/boot/dts/sophgo/cv180x.dtsi > > index 7eecc67f896e..3a82cc40ea1a 100644 > > --- a/arch/riscv/boot/dts/sophgo/cv180x.dtsi > > +++ b/arch/riscv/boot/dts/sophgo/cv180x.dtsi > > @@ -31,6 +31,33 @@ rst: reset-controller@3003000 { > > #reset-cells = <1>; > > }; > > > > + mdio: mdio@3009800 { > > The nodename is wrong here because this is not an MDIO bus. It is a > mux. So "mdio-mux@..." for the node name. > Thanks, I will send a fix for this. Regards, Inochi
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