[U-Boot] [PATCH v2 1/1] add support for Raspberry Pi Zero W

[Andreas Färber]

Am 01.08.2017 um 16:47 schrieb Dmitry Korunov:
> The Raspberry Pi Zero W extends the Pi Zero family and it's also
> based on a BCM2835 SoC. Like the Pi Zero, it has 512MB RAM,
> Mini HDMI and USB On-The-Go ports. Both Pi's hasn't got Ethernet,
> but Pi Zero W has built in wireless LAN 802.11 b/g/n.
> 
> Signed-off-by: Dmitry Korunov <dessel.k at gmail.com>
> ---
> Changes for v2:
>    - removed surplus spaces
>    - added the board description
> 
>  arch/arm/dts/bcm2835-rpi-zero-w.dts    | 33 +++++++++++++++++++++++++++++++++
>  arch/arm/dts/bcm283x-rpi-usb-host.dtsi |  3 +++
>  arch/arm/mach-bcm283x/Kconfig          | 16 ++++++++++++++++
>  board/raspberrypi/rpi/rpi.c            |  5 +++++
>  configs/rpi_0_w_defconfig              | 28 ++++++++++++++++++++++++++++
>  include/configs/rpi.h                  |  2 +-
>  6 files changed, 86 insertions(+), 1 deletion(-)
>  create mode 100644 arch/arm/dts/bcm2835-rpi-zero-w.dts

>  create mode 100644 arch/arm/dts/bcm283x-rpi-usb-host.dtsi

This file is already present in the meantime (but applies with --3way).

>  create mode 100644 configs/rpi_0_w_defconfig
> 
> diff --git a/arch/arm/dts/bcm2835-rpi-zero-w.dts b/arch/arm/dts/bcm2835-rpi-zero-w.dts
> new file mode 100644
> index 0000000..067cb31
> --- /dev/null
> +++ b/arch/arm/dts/bcm2835-rpi-zero-w.dts
> @@ -0,0 +1,33 @@
> +/dts-v1/;
> +#include "bcm2835.dtsi"
> +#include "bcm2835-rpi.dtsi"
> +#include "bcm283x-rpi-usb-host.dtsi"
> +
> +/ {
> +	compatible = "raspberrypi,model-zero-w", "brcm,bcm2835";
> +	model = "Raspberry Pi Zero W";
> +
> +	leds {
> +		act {
> +			gpios = <&gpio 47 0>;
> +		};
> +	};
> +};
> +
> +&gpio {
> +	pinctrl-0 = <&gpioout &alt0 &i2s_alt0 &alt3>;

  DTC     arch/arm/dts/bcm2835-rpi-zero-w.dtb
arch/arm/dts/bcm2835-rpi-zero-w.dtb: ERROR (phandle_references):
Reference to non-existent node or label "alt3"

ERROR: Input tree has errors, aborting (use -f to force output)

If I comment out alt3, it builds and boots okay. How to fix properly?

> +
> +	/* I2S interface */
> +	i2s_alt0: i2s_alt0 {
> +		brcm,pins = <18 19 20 21>;
> +		brcm,function = <BCM2835_FSEL_ALT0>;
> +	};
> +};
> +
> +&uart1 {

The v4.14 .dts file does not have this and does not seem to work. Does
this need to go into a -uboot.dtsi file instead or do more files need a
refresh?

Regards,
Andreas

> +	status = "okay";
> +};
> +
> +&hdmi {
> +	hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
> +};
[snip]

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