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Date: Tue, 26 Sep 2023 09:18:26 -0500
From: Andrew Davis <afd@...com>
To: MD Danish Anwar <danishanwar@...com>,
Vignesh Raghavendra <vigneshr@...com>,
Nishanth Menon <nm@...com>
CC: Conor Dooley <conor+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Rob Herring <robh+dt@...nel.org>,
Tero Kristo <kristo@...nel.org>, Andrew Lunn <andrew@...n.ch>,
<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
<srk@...com>, <r-gunasekaran@...com>
Subject: Re: [PATCH v3 2/4] arm64: dts: ti: k3-am654-base-board: add ICSSG2
Ethernet support
On 9/25/23 11:53 PM, MD Danish Anwar wrote:
> ICSSG2 provides dual Gigabit Ethernet support.
>
> For support SR2.0 ICSSG Ethernet firmware:
> - provide different firmware blobs and use TX_PRU.
> - IEP0 is used as PTP Hardware Clock and can only be used for one port.
> - TX timestamp notification comes via INTC interrupt.
>
> Signed-off-by: MD Danish Anwar <danishanwar@...com>
> ---
Seems reasonable to me,
Reviewed-by: Andrew Davis <afd@...com>
> arch/arm64/boot/dts/ti/Makefile | 2 +
> ...se-board.dts => k3-am654-common-board.dts} | 0
> arch/arm64/boot/dts/ti/k3-am654-icssg2.dtso | 145 ++++++++++++++++++
> 3 files changed, 147 insertions(+)
> rename arch/arm64/boot/dts/ti/{k3-am654-base-board.dts => k3-am654-common-board.dts} (100%)
> create mode 100644 arch/arm64/boot/dts/ti/k3-am654-icssg2.dtso
>
> diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
> index e7b8e2e7f083..8f5c9515777e 100644
> --- a/arch/arm64/boot/dts/ti/Makefile
> +++ b/arch/arm64/boot/dts/ti/Makefile
> @@ -42,12 +42,14 @@ dtb-$(CONFIG_ARCH_K3) += k3-am642-tqma64xxl-mbax4xxl-sdcard.dtb
> dtb-$(CONFIG_ARCH_K3) += k3-am642-tqma64xxl-mbax4xxl-wlan.dtb
>
> # Boards with AM65x SoC
> +k3-am654-base-board-dtbs := k3-am654-common-board.dtb k3-am654-icssg2.dtbo
> k3-am654-gp-evm-dtbs := k3-am654-base-board.dtb k3-am654-base-board-rocktech-rk101-panel.dtbo
> dtb-$(CONFIG_ARCH_K3) += k3-am6528-iot2050-basic.dtb
> dtb-$(CONFIG_ARCH_K3) += k3-am6528-iot2050-basic-pg2.dtb
> dtb-$(CONFIG_ARCH_K3) += k3-am6548-iot2050-advanced.dtb
> dtb-$(CONFIG_ARCH_K3) += k3-am6548-iot2050-advanced-m2.dtb
> dtb-$(CONFIG_ARCH_K3) += k3-am6548-iot2050-advanced-pg2.dtb
> +dtb-$(CONFIG_ARCH_K3) += k3-am654-common-board.dtb
> dtb-$(CONFIG_ARCH_K3) += k3-am654-base-board.dtb
> dtb-$(CONFIG_ARCH_K3) += k3-am654-gp-evm.dtb
>
> diff --git a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts b/arch/arm64/boot/dts/ti/k3-am654-common-board.dts
> similarity index 100%
> rename from arch/arm64/boot/dts/ti/k3-am654-base-board.dts
> rename to arch/arm64/boot/dts/ti/k3-am654-common-board.dts
> diff --git a/arch/arm64/boot/dts/ti/k3-am654-icssg2.dtso b/arch/arm64/boot/dts/ti/k3-am654-icssg2.dtso
> new file mode 100644
> index 000000000000..7b7d32282668
> --- /dev/null
> +++ b/arch/arm64/boot/dts/ti/k3-am654-icssg2.dtso
> @@ -0,0 +1,145 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/**
> + * DT overlay for IDK application board on AM654 EVM
> + *
> + * Copyright (C) 2018-2023 Texas Instruments Incorporated - https://www.ti.com/
> + */
> +
> +/dts-v1/;
> +/plugin/;
> +
> +#include <dt-bindings/net/ti-dp83867.h>
> +#include "k3-pinctrl.h"
> +
> +&{/} {
> + aliases {
> + ethernet1 = &icssg2_emac0;
> + ethernet2 = &icssg2_emac1;
> + };
> +
> + /* Ethernet node on PRU-ICSSG2 */
> + icssg2_eth: icssg2-eth {
> + compatible = "ti,am654-icssg-prueth";
> + pinctrl-names = "default";
> + pinctrl-0 = <&icssg2_rgmii_pins_default>;
> + sram = <&msmc_ram>;
> + ti,prus = <&pru2_0>, <&rtu2_0>, <&tx_pru2_0>,
> + <&pru2_1>, <&rtu2_1>, <&tx_pru2_1>;
> + firmware-name = "ti-pruss/am65x-sr2-pru0-prueth-fw.elf",
> + "ti-pruss/am65x-sr2-rtu0-prueth-fw.elf",
> + "ti-pruss/am65x-sr2-txpru0-prueth-fw.elf",
> + "ti-pruss/am65x-sr2-pru1-prueth-fw.elf",
> + "ti-pruss/am65x-sr2-rtu1-prueth-fw.elf",
> + "ti-pruss/am65x-sr2-txpru1-prueth-fw.elf";
> +
> + ti,pruss-gp-mux-sel = <2>, /* MII mode */
> + <2>,
> + <2>,
> + <2>, /* MII mode */
> + <2>,
> + <2>;
> +
> + ti,mii-g-rt = <&icssg2_mii_g_rt>;
> + ti,mii-rt = <&icssg2_mii_rt>;
> + ti,iep = <&icssg2_iep0>, <&icssg2_iep1>;
> +
> + interrupt-parent = <&icssg2_intc>;
> + interrupts = <24 0 2>, <25 1 3>;
> + interrupt-names = "tx_ts0", "tx_ts1";
> +
> + dmas = <&main_udmap 0xc300>, /* egress slice 0 */
> + <&main_udmap 0xc301>, /* egress slice 0 */
> + <&main_udmap 0xc302>, /* egress slice 0 */
> + <&main_udmap 0xc303>, /* egress slice 0 */
> + <&main_udmap 0xc304>, /* egress slice 1 */
> + <&main_udmap 0xc305>, /* egress slice 1 */
> + <&main_udmap 0xc306>, /* egress slice 1 */
> + <&main_udmap 0xc307>, /* egress slice 1 */
> + <&main_udmap 0x4300>, /* ingress slice 0 */
> + <&main_udmap 0x4301>; /* 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>;
> + icssg2_emac0: port@0 {
> + reg = <0>;
> + phy-handle = <&icssg2_phy0>;
> + phy-mode = "rgmii-id";
> + ti,syscon-rgmii-delay = <&scm_conf 0x4120>;
> + /* Filled in by bootloader */
> + local-mac-address = [00 00 00 00 00 00];
> + };
> + icssg2_emac1: port@1 {
> + reg = <1>;
> + phy-handle = <&icssg2_phy1>;
> + phy-mode = "rgmii-id";
> + ti,syscon-rgmii-delay = <&scm_conf 0x4124>;
> + /* Filled in by bootloader */
> + local-mac-address = [00 00 00 00 00 00];
> + };
> + };
> + };
> +};
> +
> +&main_pmx0 {
> +
> + icssg2_mdio_pins_default: icssg2-mdio-default-pins {
> + pinctrl-single,pins = <
> + AM65X_IOPAD(0x0094, PIN_INPUT, 2) /* (AC19) PRG2_PRU0_GPO7.PRG2_MDIO0_MDIO */
> + AM65X_IOPAD(0x00c8, PIN_OUTPUT, 2) /* (AE15) PRG2_PRU1_GPO7.PRG2_MDIO0_MDC */
> + >;
> + };
> +
> + icssg2_rgmii_pins_default: icssg2-rgmii-default-pins {
> + pinctrl-single,pins = <
> + AM65X_IOPAD(0x00ac, PIN_INPUT, 2) /* (AH15) PRG2_PRU1_GPO0.PRG2_RGMII2_RD0 */
> + AM65X_IOPAD(0x00b0, PIN_INPUT, 2) /* (AC16) PRG2_PRU1_GPO1.PRG2_RGMII2_RD1 */
> + AM65X_IOPAD(0x00b4, PIN_INPUT, 2) /* (AD17) PRG2_PRU1_GPO2.PRG2_RGMII2_RD2 */
> + AM65X_IOPAD(0x00b8, PIN_INPUT, 2) /* (AH14) PRG2_PRU1_GPO3.PRG2_RGMII2_RD3 */
> + AM65X_IOPAD(0x00cc, PIN_OUTPUT, 2) /* (AD15) PRG2_PRU1_GPO8.PRG2_RGMII2_TD0 */
> + AM65X_IOPAD(0x00d0, PIN_OUTPUT, 2) /* (AF14) PRG2_PRU1_GPO9.PRG2_RGMII2_TD1 */
> + AM65X_IOPAD(0x00d4, PIN_OUTPUT, 2) /* (AC15) PRG2_PRU1_GPO10.PRG2_RGMII2_TD2 */
> + AM65X_IOPAD(0x00d8, PIN_OUTPUT, 2) /* (AD14) PRG2_PRU1_GPO11.PRG2_RGMII2_TD3 */
> + AM65X_IOPAD(0x00dc, PIN_INPUT, 2) /* (AE14) PRG2_PRU1_GPO16.PRG2_RGMII2_TXC */
> + AM65X_IOPAD(0x00c4, PIN_OUTPUT, 2) /* (AC17) PRG2_PRU1_GPO6.PRG2_RGMII2_TX_CTL */
> + AM65X_IOPAD(0x00c0, PIN_INPUT, 2) /* (AG15) PRG2_PRU1_GPO5.PRG2_RGMII2_RXC */
> + AM65X_IOPAD(0x00bc, PIN_INPUT, 2) /* (AG14) PRG2_PRU1_GPO4.PRG2_RGMII2_RX_CTL */
> +
> + AM65X_IOPAD(0x0078, PIN_INPUT, 2) /* (AF18) PRG2_PRU0_GPO0.PRG2_RGMII1_RD0 */
> + AM65X_IOPAD(0x007c, PIN_INPUT, 2) /* (AE18) PRG2_PRU0_GPO1.PRG2_RGMII1_RD1 */
> + AM65X_IOPAD(0x0080, PIN_INPUT, 2) /* (AH17) PRG2_PRU0_GPO2.PRG2_RGMII1_RD2 */
> + AM65X_IOPAD(0x0084, PIN_INPUT, 2) /* (AG18) PRG2_PRU0_GPO3.PRG2_RGMII1_RD3 */
> + AM65X_IOPAD(0x0098, PIN_OUTPUT, 2) /* (AH16) PRG2_PRU0_GPO8.PRG2_RGMII1_TD0 */
> + AM65X_IOPAD(0x009c, PIN_OUTPUT, 2) /* (AG16) PRG2_PRU0_GPO9.PRG2_RGMII1_TD1 */
> + AM65X_IOPAD(0x00a0, PIN_OUTPUT, 2) /* (AF16) PRG2_PRU0_GPO10.PRG2_RGMII1_TD2 */
> + AM65X_IOPAD(0x00a4, PIN_OUTPUT, 2) /* (AE16) PRG2_PRU0_GPO11.PRG2_RGMII1_TD3 */
> + AM65X_IOPAD(0x00a8, PIN_INPUT, 2) /* (AD16) PRG2_PRU0_GPO16.PRG2_RGMII1_TXC */
> + AM65X_IOPAD(0x0090, PIN_OUTPUT, 2) /* (AE17) PRG2_PRU0_GPO6.PRG2_RGMII1_TX_CTL */
> + AM65X_IOPAD(0x008c, PIN_INPUT, 2) /* (AF17) PRG2_PRU0_GPO5.PRG2_RGMII1_RXC */
> + AM65X_IOPAD(0x0088, PIN_INPUT, 2) /* (AG17) PRG2_PRU0_GPO4.PRG2_RGMII1_RX_CTL */
> + >;
> + };
> +};
> +
> +&icssg2_mdio {
> + status = "okay";
> + pinctrl-names = "default";
> + pinctrl-0 = <&icssg2_mdio_pins_default>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + icssg2_phy0: ethernet-phy@0 {
> + reg = <0>;
> + ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
> + ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
> + };
> +
> + icssg2_phy1: ethernet-phy@3 {
> + reg = <3>;
> + ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
> + ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
> + };
> +};
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