commit acb4169447a85e257c8a8a3748fb98365642b088
author Marek Vasut <marex@denx.de> Mon Dec 06 21:58:09 2021 +0100
committer Patrice Chotard <patrice.chotard@foss.st.com> Mon Jan 24 10:55:06 2022 +0100
tree 1ee285f27f4c4962e42f6ea70e8ccb37c2a1544f
parent 2f7aae04d657d9aa3e2eb657cc5333c31bc47a88

ARM: dts: stm32: Add DFU support for DHCOR recovery

This patch configures U-Boot SPL for DHCOR SoM to permit DFU upload of
SPL and subsequent u-boot.itb for recovery or commissioning purposes.

To start U-Boot on DHCOR based board, e.g. Avenger96, proceed as follows:
- Install dfu-util on the host PC (in debian this is package 'dfu-util')

- Power off the Avenger96 board.
- Connect both USB-serial console and USB-OTG microB ports to host PC.
- Switch Avenger96 to USB boot mode -- BOOT0..2 switches all set to 0.
- Power on the Avenger96 board.
- Verify using '$ dmesg' that a new device has been detected as follows:
    New USB device found, idVendor=0483, idProduct=df11, bcdDevice= 2.00
    New USB device strings: Mfr=1, Product=2, SerialNumber=3
    Product: DFU in HS Mode @Device ID /0x500, @Revision ID /0x0000
    Manufacturer: STMicroelectronics

- Upload U-Boot SPL:
$ dfu-util -a 1 -D u-boot-spl.stm32
- Upload U-Boot proper:
$ dfu-util -a 0 -D u-boot.itb

- At this point, SPL will wait for user to press "Ctrl-C" on serial
  console. When ready to interact with U-Boot, press Ctrl-C to start
  the bootloader.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>

arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi

diff --git a/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi b/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi
index 502cd95..7137551 100644
--- a/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi
@@ -27,6 +27,7 @@
 
 &i2c4 {
 	u-boot,dm-pre-reloc;
+	u-boot,dm-spl;
 };
 
 &i2c4_pins_a {
@@ -38,6 +39,15 @@
 
 &pmic {
 	u-boot,dm-pre-reloc;
+	u-boot,dm-spl;
+
+	regulators {
+		u-boot,dm-spl;
+	};
+};
+
+&pwr_regulators {
+	u-boot,dm-spl;
 };
 
 &qspi {
@@ -152,3 +162,35 @@
 		u-boot,dm-pre-reloc;
 	};
 };
+
+&reg11 {
+	u-boot,dm-spl;
+};
+
+&reg18 {
+	u-boot,dm-spl;
+};
+
+&usbotg_hs {
+	u-boot,dm-spl;
+};
+
+&usbphyc {
+	u-boot,dm-spl;
+};
+
+&usbphyc_port0 {
+	u-boot,dm-spl;
+};
+
+&usbphyc_port1 {
+	u-boot,dm-spl;
+};
+
+&vdd_io {
+	u-boot,dm-spl;
+};
+
+&vdd_usb {
+	u-boot,dm-spl;
+};