Re: [PATCH v3 2/3] arm64: dts: ti: k3-am642-evm: add ICSSG1 Ethernet support

From: Anwar, Md Danish
Date: Fri Feb 02 2024 - 11:44:32 EST

On 2/2/2024 5:17 PM, Roger Quadros wrote:
>
>
> On 22/01/2024 13:30, MD Danish Anwar wrote:
>> ICSSG1 provides dual Gigabit Ethernet support with proper FW loaded.
>>
>> The ICSSG1 MII0 (RGMII1) has DP83869 PHY attached to it. The ICSSG1 shares
>> MII1 (RGMII2) PHY DP83869 with CPSW3g and it's assigned by default to
>> CPSW3g. The MDIO access to MII1 (RGMII2) PHY DP83869 is controlled by MDIO
>> bus switch and also assigned to CPSW3g. Therefore the ICSSG1 MII1 (RGMII2)
>> port is kept disable and ICSSG1 is enabled in single MAC mode by
>> default.
>>
>> Signed-off-by: MD Danish Anwar <danishanwar@xxxxxx>
>> ---
>> arch/arm64/boot/dts/ti/k3-am642-evm.dts | 102 ++++++++++++++++++++++++
>> 1 file changed, 102 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
>> index 8c5651d2cf5d..c08b0223be52 100644
>> --- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
>> +++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
>> @@ -32,6 +32,8 @@ aliases {
>> mmc1 = &sdhci1;
>> ethernet0 = &cpsw_port1;
>> ethernet1 = &cpsw_port2;
>> + ethernet2 = &icssg1_emac0;
>> + ethernet3 = &icssg1_emac1;
>
> If icssg1_emac1 is disabled by default there is no ethernet3 right?
>

Yes. By default there isn't ethernet 3. I'll drop this alias from this
patch.

>> };
>>
>> memory@80000000 {
>> @@ -229,6 +231,70 @@ transceiver2: can-phy1 {
>> max-bitrate = <5000000>;
>> standby-gpios = <&exp1 9 GPIO_ACTIVE_HIGH>;
>> };
>> +
>> + icssg1_eth: icssg1-eth {
>> + compatible = "ti,am642-icssg-prueth";
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&icssg1_rgmii1_pins_default>;
>> +
> please drop blank line.
>
>> + sram = <&oc_sram>;
>> + ti,prus = <&pru1_0>, <&rtu1_0>, <&tx_pru1_0>, <&pru1_1>, <&rtu1_1>, <&tx_pru1_1>;
>> + firmware-name = "ti-pruss/am64x-sr2-pru0-prueth-fw.elf",
>> + "ti-pruss/am64x-sr2-rtu0-prueth-fw.elf",
>> + "ti-pruss/am64x-sr2-txpru0-prueth-fw.elf",
>> + "ti-pruss/am64x-sr2-pru1-prueth-fw.elf",
>> + "ti-pruss/am64x-sr2-rtu1-prueth-fw.elf",
>> + "ti-pruss/am64x-sr2-txpru1-prueth-fw.elf";
>> +
>> + ti,pruss-gp-mux-sel = <2>, /* MII mode */
>> + <2>,
>> + <2>,
>> + <2>, /* MII mode */
>> + <2>,
>> + <2>;
>> +
>
> please drop blank line.
>
>> + ti,mii-g-rt = <&icssg1_mii_g_rt>;
>> + ti,mii-rt = <&icssg1_mii_rt>;
>> + ti,iep = <&icssg1_iep0>, <&icssg1_iep1>;
>> +
> please drop blank line.
>
>> + interrupt-parent = <&icssg1_intc>;
>> + interrupts = <24 0 2>, <25 1 3>;
>> + interrupt-names = "tx_ts0", "tx_ts1";
>> +
> please drop blank line.
>

Will drop all the blank lines.


>> + dmas = <&main_pktdma 0xc200 15>, /* egress slice 0 */
>> + <&main_pktdma 0xc201 15>, /* egress slice 0 */
>> + <&main_pktdma 0xc202 15>, /* egress slice 0 */
>> + <&main_pktdma 0xc203 15>, /* egress slice 0 */
>> + <&main_pktdma 0xc204 15>, /* egress slice 1 */
>> + <&main_pktdma 0xc205 15>, /* egress slice 1 */
>> + <&main_pktdma 0xc206 15>, /* egress slice 1 */
>> + <&main_pktdma 0xc207 15>, /* egress slice 1 */
>> + <&main_pktdma 0x4200 15>, /* ingress slice 0 */
>> + <&main_pktdma 0x4201 15>; /* ingress slice 1 */
>> + dma-names = "tx0-0", "tx0-1", "tx0-2", "tx0-3",
>> + "tx1-0", "tx1-1", "tx1-2", "tx1-3",
>> + "rx0", "rx1";
>> +
>> + ethernet-ports {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> + icssg1_emac0: port@0 {
>> + reg = <0>;
>> + phy-handle = <&icssg1_phy1>;
>> + phy-mode = "rgmii-id";
>> + ti,syscon-rgmii-delay = <&main_conf 0x4110>;
>> + /* Filled in by bootloader */
>> + local-mac-address = [00 00 00 00 00 00];
>> + };
>> + icssg1_emac1: port@1 {
>> + reg = <1>;
>> + ti,syscon-rgmii-delay = <&main_conf 0x4114>;
>> + /* Filled in by bootloader */
>> + local-mac-address = [00 00 00 00 00 00];
>> + status = "disabled";
>> + };
>> + };
>> + };
>> };
>>
>> &main_pmx0 {
>> @@ -383,6 +449,30 @@ ddr_vtt_pins_default: ddr-vtt-default-pins {
>> AM64X_IOPAD(0x0030, PIN_OUTPUT_PULLUP, 7) /* (L18) OSPI0_CSN1.GPIO0_12 */
>> >;
>> };
>> +
>> + icssg1_mdio1_pins_default: icssg1-mdio1-default-pins {
>> + pinctrl-single,pins = <
>> + AM64X_IOPAD(0x015c, PIN_OUTPUT, 0) /* (Y6) PRG1_MDIO0_MDC */
>> + AM64X_IOPAD(0x0158, PIN_INPUT, 0) /* (AA6) PRG1_MDIO0_MDIO */
>> + >;
>> + };
>> +
>> + icssg1_rgmii1_pins_default: icssg1-rgmii1-default-pins{
>> + pinctrl-single,pins = <
>> + AM64X_IOPAD(0x00b8, PIN_INPUT, 2) /* (Y7) PRG1_PRU0_GPO0.PRG1_RGMII1_RD0 */
>> + AM64X_IOPAD(0x00bc, PIN_INPUT, 2) /* (U8) PRG1_PRU0_GPO1.PRG1_RGMII1_RD1 */
>> + AM64X_IOPAD(0x00c0, PIN_INPUT, 2) /* (W8) PRG1_PRU0_GPO2.PRG1_RGMII1_RD2 */
>> + AM64X_IOPAD(0x00c4, PIN_INPUT, 2) /* (V8) PRG1_PRU0_GPO3.PRG1_RGMII1_RD3 */
>> + AM64X_IOPAD(0x00d0, PIN_INPUT, 2) /* (AA7) PRG1_PRU0_GPO6.PRG1_RGMII1_RXC */
>> + AM64X_IOPAD(0x00c8, PIN_INPUT, 2) /* (Y8) PRG1_PRU0_GPO4.PRG1_RGMII1_RX_CTL */
>> + AM64X_IOPAD(0x00e4, PIN_INPUT, 2) /* (AA8) PRG1_PRU0_GPO11.PRG1_RGMII1_TD0 */
>> + AM64X_IOPAD(0x00e8, PIN_INPUT, 2) /* (U9) PRG1_PRU0_GPO12.PRG1_RGMII1_TD1 */
>> + AM64X_IOPAD(0x00ec, PIN_INPUT, 2) /* (W9) PRG1_PRU0_GPO13.PRG1_RGMII1_TD2 */
>> + AM64X_IOPAD(0x00f0, PIN_INPUT, 2) /* (AA9) PRG1_PRU0_GPO14.PRG1_RGMII1_TD3 */
>> + AM64X_IOPAD(0x00f8, PIN_INPUT, 2) /* (V9) PRG1_PRU0_GPO16.PRG1_RGMII1_TXC */
>> + AM64X_IOPAD(0x00f4, PIN_INPUT, 2) /* (Y9) PRG1_PRU0_GPO15.PRG1_RGMII1_TX_CTL */
>> + >;
>> + };
>> };
>>
>> &main_uart0 {
>> @@ -731,3 +821,15 @@ &main_mcan1 {
>> pinctrl-0 = <&main_mcan1_pins_default>;
>> phys = <&transceiver2>;
>> };
>> +
>> +&icssg1_mdio {
>> + status = "okay";
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&icssg1_mdio1_pins_default>;
>> +
>> + icssg1_phy1: ethernet-phy@f {
>> + reg = <0xf>;
>> + tx-internal-delay-ps = <250>;
>> + rx-internal-delay-ps = <2000>;
>> + };
>> +};
>

--
Thanks and Regards,
Md Danish Anwar