github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-05 04:56:13 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

arm64: dts: ti: Add DT overlay for PCIe + USB2.0 SERDES personality card

Browse Source 
Enable both SERDES and PCIe DT nodes in order to get PCIe working on
the SERDES PCIe x2 personality card.

The daughter card also has a USB 2.0 dual-role port. As the base board
already supports a 2.0 dual-role port, enable the port on the SERDES
card to be a host only port.

This will prevent user confusion as having 2 ports in device mode often
leads to confusion as to which port is bound to the gadget function driver.

The PCIe x2 card is provided with the AM65x IDK configuration [1]
so apply the overlay to k3-am654-idk.dtb

[1] https://www.ti.com/lit/ug/spruim6a/spruim6a.pdf

Co-developed-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Link: https://lore.kernel.org/r/20240208-for-v6-9-am65-overlays-2-0-v2-2-70bae3e91597@kernel.org
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
This commit is contained in:
Roger Quadros 2024-02-08 15:51:44 +02:00 committed by Vignesh Raghavendra
parent 8ada14cafc
commit 32b366a55e
2 changed files with 61 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/arm64/boot/dts/ti/Makefile
View File

@ -47,7 +47,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am64-tqma64xxl-mbax4xxl-wlan.dtbo
# Boards with AM65x SoC
k3-am654-gp-evm-dtbs := k3-am654-base-board.dtb k3-am654-base-board-rocktech-rk101-panel.dtbo
k3-am654-evm-dtbs := k3-am654-base-board.dtb k3-am654-icssg2.dtbo
k3-am654-idk-dtbs := k3-am654-evm.dtb k3-am654-idk.dtbo
k3-am654-idk-dtbs := k3-am654-evm.dtb k3-am654-idk.dtbo k3-am654-pcie-usb2.dtbo
dtb-$(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
@ -58,6 +58,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am654-gp-evm.dtb
dtb-$(CONFIG_ARCH_K3) += k3-am654-evm.dtb
dtb-$(CONFIG_ARCH_K3) += k3-am654-idk.dtb
dtb-$(CONFIG_ARCH_K3) += k3-am654-base-board-rocktech-rk101-panel.dtbo
dtb-$(CONFIG_ARCH_K3) += k3-am654-pcie-usb2.dtbo
# Boards with J7200 SoC
k3-j7200-evm-dtbs := k3-j7200-common-proc-board.dtb k3-j7200-evm-quad-port-eth-exp.dtbo

59
arch/arm64/boot/dts/ti/k3-am654-pcie-usb2.dtso Normal file
View File

@ -0,0 +1,59 @@
// SPDX-License-Identifier: GPL-2.0-only OR MIT
/**
* DT overlay for SERDES personality card: 2lane PCIe + USB2.0 Host on AM654 EVM
*
* Copyright (C) 2018-2024 Texas Instruments Incorporated - https://www.ti.com/
*/
/dts-v1/;
/plugin/;
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/phy/phy.h>
#include <dt-bindings/phy/phy-am654-serdes.h>
#include "k3-pinctrl.h"
&serdes0 {
assigned-clocks = <&k3_clks 153 4>,
<&serdes0 AM654_SERDES_CMU_REFCLK>,
<&serdes0 AM654_SERDES_RO_REFCLK>;
assigned-clock-parents = <&k3_clks 153 8>,
<&k3_clks 153 4>,
<&k3_clks 153 4>;
status = "okay";
};
&serdes1 {
assigned-clocks = <&serdes1 AM654_SERDES_CMU_REFCLK>;
assigned-clock-parents = <&serdes0 AM654_SERDES_RO_REFCLK>;
status = "okay";
};
&pcie0_rc {
num-lanes = <2>;
phys = <&serdes0 PHY_TYPE_PCIE 1>, <&serdes1 PHY_TYPE_PCIE 1>;
phy-names = "pcie-phy0", "pcie-phy1";
reset-gpios = <&pca9555 5 GPIO_ACTIVE_HIGH>;
status = "okay";
};
&main_pmx0 {
usb0_pins_default: usb0-default-pins {
pinctrl-single,pins = <
AM65X_IOPAD(0x02bc, PIN_OUTPUT, 0) /* (AD9) USB0_DRVVBUS */
>;
};
};
&dwc3_0 {
status = "okay";
};
&usb0_phy {
status = "okay";
};
&usb0 {
pinctrl-names = "default";
pinctrl-0 = <&usb0_pins_default>;
dr_mode = "host";
};