On 15/12/2021 17:09, Sam Protsenko wrote: > E850-96 is a 96boards development board manufactured by WinLink. It > incorporates Samsung Exynos850 SoC, and is compatible with 96boards > mezzanine boards [1], as it follows 96boards standards. > > This patch adds minimal support for E850-96 board. Next features are > enabled in board dts file and verified with minimal BusyBox rootfs: > > * User buttons > * LEDs > * Serial console > * Watchdog timers > * RTC > * eMMC > > [1] https://www.96boards.org/products/mezzanine/ > > Signed-off-by: Sam Protsenko <semen.protsenko@xxxxxxxxxx> > --- > arch/arm64/boot/dts/exynos/Makefile | 3 +- > .../boot/dts/exynos/exynos850-e850-96.dts | 157 ++++++++++++++++++ > 2 files changed, 159 insertions(+), 1 deletion(-) > create mode 100644 arch/arm64/boot/dts/exynos/exynos850-e850-96.dts > > diff --git a/arch/arm64/boot/dts/exynos/Makefile b/arch/arm64/boot/dts/exynos/Makefile > index b41e86df0a84..803548ccc537 100644 > --- a/arch/arm64/boot/dts/exynos/Makefile > +++ b/arch/arm64/boot/dts/exynos/Makefile > @@ -3,4 +3,5 @@ dtb-$(CONFIG_ARCH_EXYNOS) += \ > exynos5433-tm2.dtb \ > exynos5433-tm2e.dtb \ > exynos7-espresso.dtb \ > - exynosautov9-sadk.dtb > + exynosautov9-sadk.dtb \ > + exynos850-e850-96.dtb > diff --git a/arch/arm64/boot/dts/exynos/exynos850-e850-96.dts b/arch/arm64/boot/dts/exynos/exynos850-e850-96.dts > new file mode 100644 > index 000000000000..fd611906d81c > --- /dev/null > +++ b/arch/arm64/boot/dts/exynos/exynos850-e850-96.dts > @@ -0,0 +1,157 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * WinLink E850-96 board device tree source > + * > + * Copyright (C) 2018 Samsung Electronics Co., Ltd. > + * Copyright (C) 2021 Linaro Ltd. > + * > + * Device tree source file for WinLink's E850-96 board which is based on > + * Samsung Exynos850 SoC. > + */ > + > +/dts-v1/; > + > +#include "exynos850.dtsi" > +#include <dt-bindings/gpio/gpio.h> > +#include <dt-bindings/input/input.h> > + > +#define BOARD_ID 0x0 > +#define BOARD_REV 0x2 > + > +/ { > + model = "WinLink E850-96 board"; > + compatible = "winlink,e850-96", "samsung,exynos850"; > + board_id = <BOARD_ID>; > + board_rev = <BOARD_REV>; > + > + chosen { > + stdout-path = &serial_0; > + }; > + You did not define memory node. Do you expect bootloader to fill it? Does it change between different boards? Best regards, Krzysztof
