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arm64: dts: renesas: rzg3s-smarc-som: Enable the Ethernet interfaces

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The RZ/G3S Smarc Module has Ethernet PHYs (KSZ9131) connected to each
Ethernet IP.  For this, add proper DT descriptions to enable Ethernet
communication through these PHYs.

The interface b/w PHYs and MACs is RGMII.  The skew settings were set to
zero as based on phy-mode (rgmii-id) the KSZ9131 driver enables internal
DLL, which adds a 2ns delay b/w clocks (TX/RX) and data signals.

Different pin settings were applied to TXC and TX_CTL compared with the
rest of the RGMII pins to comply with requirements for these pins
imposed by HW manual of RZ/G3S (see chapters "Ether Ch0 Voltage Mode
Control Register (ETH0_POC)", "Ether Ch1 Voltage Mode Control Register
(ETH1_POC)", for power source selection, "Ether MII/RGMII Mode Control
Register (ETH_MODE)" for output-enable and "Input Enable Control
Register (IEN_m)" for input-enable configurations).

Also enable the Ethernet interfaces by selecting SW_CONFIG3 = SW_ON.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20231207070700.4156557-12-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
This commit is contained in:
Claudiu Beznea 2023-12-07 09:07:00 +02:00 committed by Geert Uytterhoeven
parent 447765986d
commit 932ff0c802
1 changed files with 140 additions and 1 deletions
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141
arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi
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@ -26,7 +26,7 @@
* SW_ON - SCIF1, SSI0, IRQ0, IRQ1 connected to SoC
*/
#define SW_CONFIG2 SW_ON
#define SW_CONFIG3 SW_OFF
#define SW_CONFIG3 SW_ON
/ {
compatible = "renesas,rzg3s-smarcm", "renesas,r9a08g045s33", "renesas,r9a08g045";
@ -35,6 +35,9 @@
mmc0 = &sdhi0;
#if SW_CONFIG3 == SW_OFF
mmc2 = &sdhi2;
#else
eth0 = &eth0;
eth1 = &eth1;
#endif
};
@ -89,6 +92,60 @@
};
};
#if SW_CONFIG3 == SW_ON
&eth0 {
pinctrl-0 = <&eth0_pins>;
pinctrl-names = "default";
phy-handle = <&phy0>;
phy-mode = "rgmii-id";
status = "okay";
phy0: ethernet-phy@7 {
reg = <7>;
interrupt-parent = <&pinctrl>;
interrupts = <RZG2L_GPIO(12, 0) IRQ_TYPE_EDGE_FALLING>;
rxc-skew-psec = <0>;
txc-skew-psec = <0>;
rxdv-skew-psec = <0>;
txen-skew-psec = <0>;
rxd0-skew-psec = <0>;
rxd1-skew-psec = <0>;
rxd2-skew-psec = <0>;
rxd3-skew-psec = <0>;
txd0-skew-psec = <0>;
txd1-skew-psec = <0>;
txd2-skew-psec = <0>;
txd3-skew-psec = <0>;
};
};
&eth1 {
pinctrl-0 = <&eth1_pins>;
pinctrl-names = "default";
phy-handle = <&phy1>;
phy-mode = "rgmii-id";
status = "okay";
phy1: ethernet-phy@7 {
reg = <7>;
interrupt-parent = <&pinctrl>;
interrupts = <RZG2L_GPIO(12, 1) IRQ_TYPE_EDGE_FALLING>;
rxc-skew-psec = <0>;
txc-skew-psec = <0>;
rxdv-skew-psec = <0>;
txen-skew-psec = <0>;
rxd0-skew-psec = <0>;
rxd1-skew-psec = <0>;
rxd2-skew-psec = <0>;
rxd3-skew-psec = <0>;
txd0-skew-psec = <0>;
txd1-skew-psec = <0>;
txd2-skew-psec = <0>;
txd3-skew-psec = <0>;
};
};
#endif
&extal_clk {
clock-frequency = <24000000>;
};
@ -136,6 +193,88 @@
#endif
&pinctrl {
eth0-phy-irq-hog {
gpio-hog;
gpios = <RZG2L_GPIO(12, 0) GPIO_ACTIVE_LOW>;
input;
line-name = "eth0-phy-irq";
};
eth0_pins: eth0 {
txc {
pinmux = <RZG2L_PORT_PINMUX(1, 0, 1)>; /* ET0_TXC */
power-source = <1800>;
output-enable;
input-enable;
drive-strength-microamp = <5200>;
};
tx_ctl {
pinmux = <RZG2L_PORT_PINMUX(1, 1, 1)>; /* ET0_TX_CTL */
power-source = <1800>;
output-enable;
drive-strength-microamp = <5200>;
};
mux {
pinmux = <RZG2L_PORT_PINMUX(1, 2, 1)>, /* ET0_TXD0 */
<RZG2L_PORT_PINMUX(1, 3, 1)>, /* ET0_TXD1 */
<RZG2L_PORT_PINMUX(1, 4, 1)>, /* ET0_TXD2 */
<RZG2L_PORT_PINMUX(2, 0, 1)>, /* ET0_TXD3 */
<RZG2L_PORT_PINMUX(3, 0, 1)>, /* ET0_RXC */
<RZG2L_PORT_PINMUX(3, 1, 1)>, /* ET0_RX_CTL */
<RZG2L_PORT_PINMUX(3, 2, 1)>, /* ET0_RXD0 */
<RZG2L_PORT_PINMUX(3, 3, 1)>, /* ET0_RXD1 */
<RZG2L_PORT_PINMUX(4, 0, 1)>, /* ET0_RXD2 */
<RZG2L_PORT_PINMUX(4, 1, 1)>, /* ET0_RXD3 */
<RZG2L_PORT_PINMUX(4, 3, 1)>, /* ET0_MDC */
<RZG2L_PORT_PINMUX(4, 4, 1)>, /* ET0_MDIO */
<RZG2L_PORT_PINMUX(4, 5, 1)>; /* ET0_LINKSTA */
power-source = <1800>;
};
};
eth1-phy-irq-hog {
gpio-hog;
gpios = <RZG2L_GPIO(12, 1) GPIO_ACTIVE_LOW>;
input;
line-name = "eth1-phy-irq";
};
eth1_pins: eth1 {
txc {
pinmux = <RZG2L_PORT_PINMUX(7, 0, 1)>; /* ET1_TXC */
power-source = <1800>;
output-enable;
input-enable;
drive-strength-microamp = <5200>;
};
tx_ctl {
pinmux = <RZG2L_PORT_PINMUX(7, 1, 1)>; /* ET1_TX_CTL */
power-source = <1800>;
output-enable;
drive-strength-microamp = <5200>;
};
mux {
pinmux = <RZG2L_PORT_PINMUX(7, 2, 1)>, /* ET1_TXD0 */
<RZG2L_PORT_PINMUX(7, 3, 1)>, /* ET1_TXD1 */
<RZG2L_PORT_PINMUX(7, 4, 1)>, /* ET1_TXD2 */
<RZG2L_PORT_PINMUX(8, 0, 1)>, /* ET1_TXD3 */
<RZG2L_PORT_PINMUX(8, 4, 1)>, /* ET1_RXC */
<RZG2L_PORT_PINMUX(9, 0, 1)>, /* ET1_RX_CTL */
<RZG2L_PORT_PINMUX(9, 1, 1)>, /* ET1_RXD0 */
<RZG2L_PORT_PINMUX(9, 2, 1)>, /* ET1_RXD1 */
<RZG2L_PORT_PINMUX(9, 3, 1)>, /* ET1_RXD2 */
<RZG2L_PORT_PINMUX(10, 0, 1)>, /* ET1_RXD3 */
<RZG2L_PORT_PINMUX(10, 2, 1)>, /* ET1_MDC */
<RZG2L_PORT_PINMUX(10, 3, 1)>, /* ET1_MDIO */
<RZG2L_PORT_PINMUX(10, 4, 1)>; /* ET1_LINKSTA */
power-source = <1800>;
};
};
sdhi0_pins: sd0 {
data {
pins = "SD0_DATA0", "SD0_DATA1", "SD0_DATA2", "SD0_DATA3";