Hi Andreas,

On 1.8.2018 00:00, Andreas Galauner wrote:

This change adds the necessary /chosen/stdout-path to the device tree for the Avnet Picozed boards. This node is mandatory for the SPL. Without it the board resets in a loop without any output. The change also adds the USB, QSPI and Ethernet MAC nodes of the corresponding devices present on the board.

Signed-off-by: Andreas Galauner andreas@galauner.de

arch/arm/dts/zynq-picozed.dts | 40 +++++++++++++++++++++++++++++++++-- 1 file changed, 38 insertions(+), 2 deletions(-)

diff --git a/arch/arm/dts/zynq-picozed.dts b/arch/arm/dts/zynq-picozed.dts index dea6a422c3..db5bb8a6fe 100644 --- a/arch/arm/dts/zynq-picozed.dts +++ b/arch/arm/dts/zynq-picozed.dts @@ -14,13 +14,33 @@ aliases { serial0 = &uart1; spi0 = &qspi;

• mmc0 = &sdhci1;
  

• mmc0 = &sdhci0;
  

• mmc1 = &sdhci1;
  

  };

  memory@0 { device_type = "memory"; reg = <0 0x40000000>; };

• chosen {

• bootargs = "earlyprintk";
  

• stdout-path = "serial0:115200n8";
  

• };

• usb_phy0: phy0 {

• compatible = "usb-nop-xceiv";
  

• #phy-cells = <0>;
  

• };

+};

+&clkc {

• ps-clk-frequency = <33333333>;

+};

+&qspi {

• u-boot,dm-pre-reloc;
• status = "okay";

};

&uart1 { @@ -28,7 +48,17 @@ status = "okay"; };

-&qspi { +&gem0 {

• status = "okay";
• phy-mode = "rgmii-id";
• phy-handle = <&ethernet_phy>;
• ethernet_phy: ethernet-phy@0 {

• reg = <0>;
  

• };

+};

+&sdhci0 { u-boot,dm-pre-reloc; status = "okay"; }; @@ -37,3 +67,9 @@ u-boot,dm-pre-reloc; status = "okay"; };

+&usb0 {

• status = "okay";
• dr_mode = "host";
• usb-phy = <&usb_phy0>;

+};

We have been discussing this topic some months ago here https://lists.denx.de/pipermail/u-boot/2018-May/327267.html

This is a SoM. You need to do it differently because you need to describe carrier board and then include SoM dtsi.

Thanks, Michal