[v3] ARM: dts: aspeed: Add a palmetto board (AST2400)

Palmettos were the first OpenPOWER systems built by Tyan with the
product name: GN70-BP010. They contained an IBM POWER8 Turismo SCM
processor and an Aspeed AST2400 SoC.

Tested on real HW using the evb-ast2400 defconfig, plus these extras :

  CONFIG_BOOTCOMMAND="bootm 20080000"
  CONFIG_DEFAULT_DEVICE_TREE="ast2400-palmetto"

Cc: Zev Weiss <zweiss@equinix.com>
Cc: Frédéric Barrat <fbarrat@linux.ibm.com>
Cc: Joel Stanley <joel@jms.id.au>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---

 Since v2:

 - DT cleanups (Zev)
 - Dropped the defconfig because only the default boot command needs
   an update to boot Linux
 - Tested on real HW ! Thanks to Frédéric.

 arch/arm/dts/Makefile             |  1 +
 arch/arm/dts/ast2400-palmetto.dts | 73 +++++++++++++++++++++++++++++++
 2 files changed, 74 insertions(+)
 create mode 100644 arch/arm/dts/ast2400-palmetto.dts

On Sun, 19 Jun 2022 at 15:13, Cédric Le Goater <clg@kaod.org> wrote:
>
> Palmettos were the first OpenPOWER systems built by Tyan with the
> product name: GN70-BP010. They contained an IBM POWER8 Turismo SCM
> processor and an Aspeed AST2400 SoC.
>
> Tested on real HW using the evb-ast2400 defconfig, plus these extras :
>
>   CONFIG_BOOTCOMMAND="bootm 20080000"
>   CONFIG_DEFAULT_DEVICE_TREE="ast2400-palmetto"
>
> Cc: Zev Weiss <zweiss@equinix.com>
> Cc: Frédéric Barrat <fbarrat@linux.ibm.com>
> Cc: Joel Stanley <joel@jms.id.au>
> Signed-off-by: Cédric Le Goater <clg@kaod.org>

Reviewed-by: Joel Stanley <joel@jms.id.au>

Looks good, thanks Cédric.

> ---
>
>  Since v2:
>
>  - DT cleanups (Zev)
>  - Dropped the defconfig because only the default boot command needs
>    an update to boot Linux
>  - Tested on real HW ! Thanks to Frédéric.
>
>  arch/arm/dts/Makefile             |  1 +
>  arch/arm/dts/ast2400-palmetto.dts | 73 +++++++++++++++++++++++++++++++
>  2 files changed, 74 insertions(+)
>  create mode 100644 arch/arm/dts/ast2400-palmetto.dts
>
> diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
> index 35cdd0952d33..6dc9aeab24ff 100755
> --- a/arch/arm/dts/Makefile
> +++ b/arch/arm/dts/Makefile
> @@ -677,6 +677,7 @@ dtb-$(CONFIG_ARCH_BCM6858) += \
>  dtb-$(CONFIG_ARCH_ASPEED) += \
>         ast2400-evb.dtb \
>         ast2400-ahe-50dc.dtb \
> +       ast2400-palmetto.dtb \
>         ast2500-evb.dtb \
>         ast2600a0-evb.dtb \
>         ast2600a1-evb.dtb \
> diff --git a/arch/arm/dts/ast2400-palmetto.dts b/arch/arm/dts/ast2400-palmetto.dts
> new file mode 100644
> index 000000000000..43b141a8379d
> --- /dev/null
> +++ b/arch/arm/dts/ast2400-palmetto.dts
> @@ -0,0 +1,73 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/dts-v1/;
> +
> +#include "ast2400-u-boot.dtsi"
> +
> +/ {
> +       model = "Palmetto BMC";
> +       compatible = "tyan,palmetto-bmc", "aspeed,ast2400";
> +
> +       memory@40000000 {
> +               device_type = "memory";
> +               reg = <0x40000000 0x10000000>;
> +       };
> +
> +       chosen {
> +               stdout-path = &uart5;
> +       };
> +
> +       aliases {
> +               spi0 = &fmc;
> +               spi1 = &spi1;
> +       };
> +};
> +
> +&uart5 {
> +       u-boot,dm-pre-reloc;
> +       status = "okay";
> +};
> +
> +&sdrammc {
> +       clock-frequency = <200000000>;
> +};
> +
> +&wdt1 {
> +       u-boot,dm-pre-reloc;
> +       status = "okay";
> +};
> +
> +&wdt2 {
> +       u-boot,dm-pre-reloc;
> +       status = "okay";
> +};
> +
> +&mac0 {
> +       status = "okay";
> +
> +       phy-mode = "NC-SI";
> +       use-ncsi;
> +       pinctrl-names = "default";
> +       pinctrl-0 = <&pinctrl_rmii1_default>;
> +};
> +
> +&fmc {
> +       status = "okay";
> +       flash@0 {
> +               status = "okay";
> +               spi-max-frequency = <50000000>;
> +               spi-tx-bus-width = <2>;
> +               spi-rx-bus-width = <2>;
> +       };
> +};
> +
> +&spi1 {
> +       status = "okay";
> +       flash@0 {
> +               pinctrl-names = "default";
> +               pinctrl-0 = <&pinctrl_spi1_default>;
> +               status = "okay";
> +               spi-max-frequency = <50000000>;
> +               spi-tx-bus-width = <2>;
> +               spi-rx-bus-width = <2>;
> +       };
> +};
> --
> 2.35.3
>