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https://github.com/brain-hackers/u-boot-brain
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43e2d1dd47
There is no dedicated pull resistor on the AV96 UART4 (console UART) pin. In case there is no UART adapter installed on the AV96, the line is floating and can trigger reception of garbage characters, which in turn can abort U-Boot autoboot. Add default pull up to mitigate this problem. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Patrick Delaunay <patrick.delaunay@st.com> Cc: Patrice Chotard <patrice.chotard@st.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
87 lines
1.0 KiB
Plaintext
87 lines
1.0 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
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/*
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* Copyright (C) 2020 Marek Vasut <marex@denx.de>
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*/
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#include "stm32mp15xx-dhcor-u-boot.dtsi"
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/ {
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aliases {
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mmc0 = &sdmmc1;
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mmc1 = &sdmmc2;
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usb0 = &usbotg_hs;
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};
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config {
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u-boot,boot-led = "led1";
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u-boot,error-led = "led4";
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dh,board-coding-gpios = <&gpiog 13 0>, <&gpiod 9 0>;
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};
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};
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&sdmmc1 {
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u-boot,dm-spl;
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};
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&sdmmc1_b4_pins_a {
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u-boot,dm-spl;
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pins1 {
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u-boot,dm-spl;
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};
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pins2 {
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u-boot,dm-spl;
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};
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};
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&sdmmc1_dir_pins_b {
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u-boot,dm-spl;
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pins1 {
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u-boot,dm-spl;
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};
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pins2 {
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u-boot,dm-spl;
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};
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};
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&sdmmc2 {
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u-boot,dm-spl;
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};
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&sdmmc2_b4_pins_a {
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u-boot,dm-spl;
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pins1 {
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u-boot,dm-spl;
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};
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pins2 {
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u-boot,dm-spl;
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};
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};
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&sdmmc2_d47_pins_b {
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u-boot,dm-spl;
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pins {
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u-boot,dm-spl;
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};
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};
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&uart4 {
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u-boot,dm-pre-reloc;
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};
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&uart4_pins_b {
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u-boot,dm-pre-reloc;
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pins1 {
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u-boot,dm-pre-reloc;
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};
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pins2 {
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u-boot,dm-pre-reloc;
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/delete-property/ bias-disable;
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bias-pull-up;
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};
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};
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&usbotg_hs {
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u-boot,force-b-session-valid;
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hnp-srp-disable;
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};
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