Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1296676

Re: [PATCH v2 6/8] ARM: bcm2835: Add devicetree for bcm2836 and Raspberry Pi 2 B

Show all headers | View raw

On Wed, Dec 16, 2015 at 03:55:13PM -0800, Eric Anholt wrote:
> The Pi 2 B ends up like a Pi 1 B+, with the same peripherals and
> pinout, but the CPU and memory layout changed to use the 2836.
> 
> Signed-off-by: Eric Anholt <eric@anholt.net>
> ---
>  arch/arm/boot/dts/bcm2836-rpi-2-b.dts | 35 ++++++++++++++++
>  arch/arm/boot/dts/bcm2836.dtsi        | 77 +++++++++++++++++++++++++++++++++++
>  2 files changed, 112 insertions(+)
>  create mode 100644 arch/arm/boot/dts/bcm2836-rpi-2-b.dts
>  create mode 100644 arch/arm/boot/dts/bcm2836.dtsi
> 
> diff --git a/arch/arm/boot/dts/bcm2836-rpi-2-b.dts b/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
> new file mode 100644
> index 0000000..ff94666
> --- /dev/null
> +++ b/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
> @@ -0,0 +1,35 @@
> +/dts-v1/;
> +#include "bcm2836.dtsi"
> +#include "bcm2835-rpi.dtsi"
> +
> +/ {
> +	compatible = "raspberrypi,2-model-b", "brcm,bcm2836";
> +	model = "Raspberry Pi 2 Model B";
> +
> +	memory {
> +		reg = <0 0x40000000>;
> +	};
> +
> +	leds {
> +		act {
> +			gpios = <&gpio 47 0>;
> +		};
> +
> +		pwr {
> +			label = "PWR";
> +			gpios = <&gpio 35 0>;
> +			default-state = "keep";
> +			linux,default-trigger = "default-on";
> +		};
> +	};
> +};
> +
> +&gpio {
> +	pinctrl-0 = <&gpioout &alt0 &i2s_alt0 &alt3>;
> +
> +	/* I2S interface */
> +	i2s_alt0: i2s_alt0 {
> +		brcm,pins = <18 19 20 21>;
> +		brcm,function = <BCM2835_FSEL_ALT0>;
> +	};
> +};
> diff --git a/arch/arm/boot/dts/bcm2836.dtsi b/arch/arm/boot/dts/bcm2836.dtsi
> new file mode 100644
> index 0000000..6693118
> --- /dev/null
> +++ b/arch/arm/boot/dts/bcm2836.dtsi
> @@ -0,0 +1,77 @@
> +#include "bcm283x.dtsi"
> +
> +/ {
> +	compatible = "brcm,bcm2836";
> +
> +	soc {
> +		ranges = <0x7e000000 0x3f000000 0x1000000>,

nitpik, I would change it here to 0x01000000 for the size parameter,
like below: 8-byte filled with zeroes.

> +			 <0x40000000 0x40000000 0x00001000>;

Is 0x00001000 correct here? I currently debug this part because the
devicetree issues which I mentioned. I looked into some bcm2836
datasheet. See [0], section "4 Registers", I assume this should be 0x00000100.
Or are there more than these registers which need to be accessable?

- Alex

[0] https://github.com/raspberrypi/documentation/blob/master/hardware/raspberrypi/bcm2836/QA7_rev3.4.pdf
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH v2 0/8] Raspberry Pi 2 support. Eric Anholt <eric@anholt.net> - 2015-12-17 01:00 +0100
  [PATCH v2 8/8] ARM: bcm2835: Add Kconfig support for bcm2836 Eric Anholt <eric@anholt.net> - 2015-12-17 01:00 +0100
    Re: [PATCH v2 8/8] ARM: bcm2835: Add Kconfig support for bcm2836 Eric Anholt <eric@anholt.net> - 2015-12-26 23:40 +0100
  [PATCH v2 5/8] ARM: bcm2835: Move the CPU/peripheral include out of common RPi DT. Eric Anholt <eric@anholt.net> - 2015-12-17 01:00 +0100
  [PATCH v2 1/8] irq: bcm2836: Fix initialization of the LOCAL_IRQ_CNT*IRQ timers Eric Anholt <eric@anholt.net> - 2015-12-17 01:00 +0100
  [PATCH v2 3/8] dt-bindings: Add root properties for Raspberry Pi 2 Eric Anholt <eric@anholt.net> - 2015-12-17 01:00 +0100
    Re: [PATCH v2 3/8] dt-bindings: Add root properties for Raspberry Pi  2 Rob Herring <robh@kernel.org> - 2015-12-19 05:20 +0100
  [PATCH v2 2/8] irq: bcm2836: Add SMP support for the 2836 Eric Anholt <eric@anholt.net> - 2015-12-17 01:00 +0100
    Re: [PATCH v2 2/8] irq: bcm2836: Add SMP support for the 2836 Baruch Siach <baruch@tkos.co.il> - 2015-12-17 06:30 +0100
  [PATCH v2 6/8] ARM: bcm2835: Add devicetree for bcm2836 and Raspberry Pi 2 B Eric Anholt <eric@anholt.net> - 2015-12-17 01:00 +0100
    Re: [PATCH v2 6/8] ARM: bcm2835: Add devicetree for bcm2836 and  Raspberry Pi 2 B Alexander Aring <alex.aring@gmail.com> - 2015-12-22 11:20 +0100
  [PATCH v2 7/8] ARM: bcm2835: Add a compat string for bcm2836 machine probe Eric Anholt <eric@anholt.net> - 2015-12-17 01:00 +0100
  Re: [PATCH v2 0/8] Raspberry Pi 2 support. Arnd Bergmann <arnd@arndb.de> - 2015-12-17 01:10 +0100
    Re: [PATCH v2 0/8] Raspberry Pi 2 support. Eric Anholt <eric@anholt.net> - 2015-12-17 01:40 +0100
      Re: [PATCH v2 0/8] Raspberry Pi 2 support. Stefan Wahren <stefan.wahren@i2se.com> - 2015-12-17 10:00 +0100
        Re: [PATCH v2 0/8] Raspberry Pi 2 support. Arnd Bergmann <arnd@arndb.de> - 2015-12-17 11:30 +0100
  Re: [PATCH v2 0/8] Raspberry Pi 2 support. Alexander Aring <alex.aring@gmail.com> - 2015-12-18 11:10 +0100
    Re: [PATCH v2 0/8] Raspberry Pi 2 support. Alexander Aring <alex.aring@gmail.com> - 2015-12-18 12:00 +0100
    Re: [PATCH v2 0/8] Raspberry Pi 2 support. Alexander Aring <alex.aring@gmail.com> - 2015-12-20 23:20 +0100
      Re: [PATCH v2 0/8] Raspberry Pi 2 support. Eric Anholt <eric@anholt.net> - 2015-12-22 00:10 +0100
        Re: [PATCH v2 0/8] Raspberry Pi 2 support. Alexander Aring <alex.aring@gmail.com> - 2015-12-22 15:30 +0100
          Re: [PATCH v2 0/8] Raspberry Pi 2 support. Eric Anholt <eric@anholt.net> - 2015-12-22 20:10 +0100
            Re: [PATCH v2 0/8] Raspberry Pi 2 support. Noralf Trønnes <noralf@tronnes.org> - 2015-12-26 22:50 +0100
      Re: [PATCH v2 0/8] Raspberry Pi 2 support. Arnd Bergmann <arnd@arndb.de> - 2015-12-22 00:20 +0100
        Re: [PATCH v2 0/8] Raspberry Pi 2 support. Alexander Aring <alex.aring@gmail.com> - 2015-12-22 15:30 +0100
          Re: [PATCH v2 0/8] Raspberry Pi 2 support. Arnd Bergmann <arnd@arndb.de> - 2015-12-22 22:30 +0100
            Re: [PATCH v2 0/8] Raspberry Pi 2 support. Eric Anholt <eric@anholt.net> - 2015-12-25 01:10 +0100

csiph-web