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arm: dts: ti: Add device tree support for PRU-ICSS on AM57xx

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The TI Sitara AM57xx series of devices consists of 2 PRU-ICSS instances
(PRU-ICSS1 and PRU-ICSS2). This patch adds the device tree nodes for the
PRU-ICSS2 instance to support DUAL-MAC mode of operation.

Each PRU-ICSS instance consists of two PRU cores along with various
peripherals such as the Interrupt Controller (PRU_INTC), the Industrial
Ethernet Peripheral(IEP), the Real Time Media Independent Interface
controller (MII_RT), and the Enhanced Capture (eCAP) event module.

am57-pruss.dtsi - Adds IEP and eCAP peripheral as child nodes of
the PRUSS subsystem node.

am57xx-idk-common.dtsi - Adds PRU-ICSS2 instance node along with
PRU eth port information and corresponding port configuration. It includes
interrupt mapping for packet reception, HW timestamp collection, and
PRU Ethernet ports in MII mode.

am571x-idk.dts, am572x-idk.dts and am574x-idk.dts - GPIO configuration
along with delay configuration for individual PRU Ethernet port.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Basharath Hussain Khaja <basharath@couthit.com>
Signed-off-by: Parvathi Pudi <parvathi@couthit.com>
Reviewed-by: MD Danish Anwar <danishanwar@ti.com>
Link: https://patch.msgid.link/20260428072046.3022679-2-parvathi@couthit.com
Signed-off-by: Kevin Hilman (TI) <khilman@baylibre.com>
This commit is contained in:
Roger Quadros 2026-04-28 12:47:27 +05:30 committed by Kevin Hilman (TI)
parent d8f1b27c9f
commit 381819c384
5 changed files with 91 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
arch/arm/boot/dts/ti/omap/am57-pruss.dtsi
View File

@ -170,6 +170,17 @@ pruss2_iepclk_mux: iepclk-mux@30 {
};
};
pruss2_iep: iep@2e000 {
compatible = "ti,am5728-icss-iep";
reg = <0x2e000 0x31c>;
clocks = <&pruss2_iepclk_mux>;
};
pruss2_ecap: ecap@30000 {
compatible = "ti,pruss-ecap";
reg = <0x30000 0x60>;
};
pruss2_mii_rt: mii-rt@32000 {
compatible = "ti,pruss-mii", "syscon";
reg = <0x32000 0x58>;

8
arch/arm/boot/dts/ti/omap/am571x-idk.dts
View File

@ -214,5 +214,11 @@ &pruss1_mdio {
};
&pruss2_mdio {
status = "disabled";
reset-gpios = <&gpio5 9 GPIO_ACTIVE_LOW>;
reset-delay-us = <2>; /* PHY datasheet states 1uS min */
};
&pruss2_eth {
ti,pruss-gp-mux-sel = <4>, /* MII2, needed for PRUSS1_MII0 */
<4>; /* MII2, needed for PRUSS1_MII1 */
};

10
arch/arm/boot/dts/ti/omap/am572x-idk.dts
View File

@ -28,10 +28,12 @@ &mmc2 {
pinctrl-2 = <&mmc2_pins_ddr_rev20>;
};
&pruss1_mdio {
status = "disabled";
&pruss2_eth0_phy {
reset-gpios = <&gpio5 8 GPIO_ACTIVE_LOW>;
reset-assert-us = <2>; /* PHY datasheet states 1uS min */
};
&pruss2_mdio {
status = "disabled";
&pruss2_eth1_phy {
reset-gpios = <&gpio5 9 GPIO_ACTIVE_LOW>;
reset-assert-us = <2>; /* PHY datasheet states 1uS min */
};

10
arch/arm/boot/dts/ti/omap/am574x-idk.dts
View File

@ -40,10 +40,12 @@ &emif1 {
status = "okay";
};
&pruss1_mdio {
status = "disabled";
&pruss2_eth0_phy {
reset-gpios = <&gpio5 8 GPIO_ACTIVE_LOW>;
reset-assert-us = <2>; /* PHY datasheet states 1uS min */
};
&pruss2_mdio {
status = "disabled";
&pruss2_eth1_phy {
reset-gpios = <&gpio5 9 GPIO_ACTIVE_LOW>;
reset-assert-us = <2>; /* PHY datasheet states 1uS min */
};

61
arch/arm/boot/dts/ti/omap/am57xx-idk-common.dtsi
View File

@ -155,6 +155,52 @@ src_clk_x1: src_clk_x1 {
compatible = "fixed-clock";
clock-frequency = <20000000>;
};
/* Dual-MAC Ethernet application node on PRU-ICSS2 */
pruss2_eth: pruss2-eth {
compatible = "ti,am57-prueth";
ti,prus = <&pru2_0>, <&pru2_1>;
sram = <&ocmcram1>;
ti,mii-rt = <&pruss2_mii_rt>;
ti,iep = <&pruss2_iep>;
ti,ecap = <&pruss2_ecap>;
interrupts = <20 2 2>, <21 3 3>;
interrupt-names = "rx_hp", "rx_lp";
interrupt-parent = <&pruss2_intc>;
ethernet-ports {
#address-cells = <1>;
#size-cells = <0>;
pruss2_emac0: ethernet-port@0 {
reg = <0>;
phy-handle = <&pruss2_eth0_phy>;
phy-mode = "mii";
interrupts = <20 2 2>, <26 6 6>, <23 6 6>;
interrupt-names = "rx", "emac_ptp_tx",
"hsr_ptp_tx";
/* Filled in by bootloader */
local-mac-address = [00 00 00 00 00 00];
};
pruss2_emac1: ethernet-port@1 {
reg = <1>;
phy-handle = <&pruss2_eth1_phy>;
phy-mode = "mii";
interrupts = <21 3 3>, <27 9 7>, <24 9 7>;
interrupt-names = "rx", "emac_ptp_tx",
"hsr_ptp_tx";
/* Filled in by bootloader */
local-mac-address = [00 00 00 00 00 00];
};
};
};
};
&pruss2_iep {
interrupt-parent = <&pruss2_intc>;
interrupts = <7 7 8>;
interrupt-names = "iep_cap_cmp";
};
&dra7_pmx_core {
@ -606,3 +652,18 @@ dpi_out: endpoint {
};
};
};
&pruss2_mdio {
status = "okay";
pruss2_eth0_phy: ethernet-phy@0 {
reg = <0>;
interrupt-parent = <&gpio3>;
interrupts = <30 IRQ_TYPE_LEVEL_LOW>;
};
pruss2_eth1_phy: ethernet-phy@1 {
reg = <1>;
interrupt-parent = <&gpio3>;
interrupts = <31 IRQ_TYPE_LEVEL_LOW>;
};
};