| Message ID | 20240524094603.988-9-paul.barker.ct@bp.renesas.com |
|---|---|
| State | New |
| Headers | show |
| Series | Configure GbEth for RGMII on RZ/G2L family | expand |
On Fri, May 24, 2024 at 11:47 AM Paul Barker <paul.barker.ct@bp.renesas.com> wrote: > On the RZ/G2LC SMARC SOM, the RGMII interface between the SoC and the > Ethernet PHY operates at 1.8V. > > The power supply for this interface may be correctly configured in > u-boot, but the kernel should not be relying on this. Now that the > RZ/G2L pinctrl driver supports configuring the Ethernet power supply > voltage, we can simply specify the desired voltage in the device tree. > > Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Gr{oetje,eeting}s, Geert
diff --git a/arch/arm64/boot/dts/renesas/rzg2lc-smarc-som.dtsi b/arch/arm64/boot/dts/renesas/rzg2lc-smarc-som.dtsi index 664311fd2098..b4ef5ea8a9e3 100644 --- a/arch/arm64/boot/dts/renesas/rzg2lc-smarc-som.dtsi +++ b/arch/arm64/boot/dts/renesas/rzg2lc-smarc-som.dtsi @@ -130,6 +130,7 @@ &pinctrl { eth0_pins: eth0 { txc { pinmux = <RZG2L_PORT_PINMUX(20, 0, 1)>; /* ET0_TXC */ + power-source = <1800>; output-enable; }; @@ -147,8 +148,12 @@ mux { <RZG2L_PORT_PINMUX(25, 0, 1)>, /* ET0_RXD0 */ <RZG2L_PORT_PINMUX(25, 1, 1)>, /* ET0_RXD1 */ <RZG2L_PORT_PINMUX(26, 0, 1)>, /* ET0_RXD2 */ - <RZG2L_PORT_PINMUX(26, 1, 1)>, /* ET0_RXD3 */ - <RZG2L_PORT_PINMUX(0, 0, 1)>; /* IRQ0 */ + <RZG2L_PORT_PINMUX(26, 1, 1)>; /* ET0_RXD3 */ + power-source = <1800>; + }; + + irq { + pinmux = <RZG2L_PORT_PINMUX(0, 0, 1)>; /* IRQ0 */ }; };
On the RZ/G2LC SMARC SOM, the RGMII interface between the SoC and the Ethernet PHY operates at 1.8V. The power supply for this interface may be correctly configured in u-boot, but the kernel should not be relying on this. Now that the RZ/G2L pinctrl driver supports configuring the Ethernet power supply voltage, we can simply specify the desired voltage in the device tree. Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com> --- arch/arm64/boot/dts/renesas/rzg2lc-smarc-som.dtsi | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)