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arm: dts: Update IOT2050 device tree files

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This fixes the usage of the USB 3.0-capable port under U-Boot as USB
2.0-only port.

Original patch by Chao Zeng.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
This commit is contained in:
Jan Kiszka 2021-10-05 12:04:50 +02:00 • committed by Tom Rini
parent ce543d0d4e
commit 08ad739f38
2 changed files with 30 additions and 1 deletions
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27
arch/arm/dts/k3-am65-iot2050-common-pg2-u-boot.dtsi Normal file
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@ -0,0 +1,27 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) Siemens AG, 2018-2021
*
* Authors:
* Chao Zeng <chao.zeng@siemens.com>
*
* U-Boot bits of the IOT2050 Advanced PG2 variants
* (downgrade of usb0 to USB 2.0 mode)
*/
&serdes0 {
status = "disabled";
};
&dwc3_0 {
assigned-clock-parents = <&k3_clks 151 4>, /* set REF_CLK to 20MHz i.e. PER0_PLL/48 */
<&k3_clks 151 9>; /* set PIPE3_TXB_CLK to CLK_12M_RC/256 (for HS only) */
/delete-property/ phys;
/delete-property/ phy-names;
};
&usb0 {
maximum-speed = "high-speed";
/delete-property/ snps,dis-u1-entry-quirk;
/delete-property/ snps,dis-u2-entry-quirk;
};

4
arch/arm/dts/k3-am65-iot2050-common-pg2.dtsi
View file

@ -44,8 +44,10 @@
phy-names = "usb3-phy";
};
&usb0_phy {
&usb0 {
maximum-speed = "super-speed";
snps,dis-u1-entry-quirk;
snps,dis-u2-entry-quirk;
};
#include "k3-am65-iot2050-common-pg2-u-boot.dtsi"