On Wed, Dec 20, 2017 at 4:33 PM, Simon Shields <simon@xxxxxxxxxxxxx> wrote: > Hi Krzysztof, > > On Wed, Dec 20, 2017 at 03:08:27PM +0100, Krzysztof Kozlowski wrote: >> On Mon, Dec 18, 2017 at 1:38 PM, Simon Shields <simon@xxxxxxxxxxxxx> wrote: >> > "midas" is the codename for a family of smartphones released by Samsung >> > Mobile. It includes the Galaxy S3 (GT-I9300/I9305) and the Galaxy >> > Note 2 (GT-N7100/N7105). The boards largely have the same peripherals: >> > the main differences are touchscreen, display panel and cellular modem. >> > >> > Signed-off-by: Simon Shields <simon@xxxxxxxxxxxxx> >> > --- >> > arch/arm/boot/dts/Makefile | 3 +++ >> > arch/arm/boot/dts/exynos4412-m0.dts | 27 +++++++++++++++++++++++++ >> > arch/arm/boot/dts/exynos4412-m3.dts | 14 +++++++++++++ >> > arch/arm/boot/dts/exynos4412-t0.dts | 40 +++++++++++++++++++++++++++++++++++++ >> > 4 files changed, 84 insertions(+) >> > create mode 100644 arch/arm/boot/dts/exynos4412-m0.dts >> > create mode 100644 arch/arm/boot/dts/exynos4412-m3.dts >> > create mode 100644 arch/arm/boot/dts/exynos4412-t0.dts >> > >> > diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile >> > index 66e28af289da..035abd66b472 100644 >> > --- a/arch/arm/boot/dts/Makefile >> > +++ b/arch/arm/boot/dts/Makefile >> > @@ -164,11 +164,14 @@ dtb-$(CONFIG_ARCH_EXYNOS4) += \ >> > exynos4210-trats.dtb \ >> > exynos4210-universal_c210.dtb \ >> > exynos4412-itop-elite.dtb \ >> > + exynos4412-m0.dtb \ >> > + exynos4412-m3.dtb \ >> > exynos4412-odroidu3.dtb \ >> > exynos4412-odroidx.dtb \ >> > exynos4412-odroidx2.dtb \ >> > exynos4412-origen.dtb \ >> > exynos4412-smdk4412.dtb \ >> > + exynos4412-t0.dtb \ >> > exynos4412-tiny4412.dtb \ >> > exynos4412-trats2.dtb >> > dtb-$(CONFIG_ARCH_EXYNOS5) += \ >> > diff --git a/arch/arm/boot/dts/exynos4412-m0.dts b/arch/arm/boot/dts/exynos4412-m0.dts >> > new file mode 100644 >> > index 000000000000..56c1ea6b5695 >> > --- /dev/null >> > +++ b/arch/arm/boot/dts/exynos4412-m0.dts >> > @@ -0,0 +1,27 @@ >> > +/* >> > + * Samsung's Exynos4412 based M0 (GT-I9300) board device tree source >> > + * >> > + * Copyright (c) 2013 Samsung Electronics Co., Ltd. >> > + * http://www.samsung.com >> > + * >> > + * Device tree source file for Samsung's M0 board which is based on >> > + * Samsung's Exynos4412 SoC. >> > + * >> > + * This program is free software; you can redistribute it and/or modify >> > + * it under the terms of the GNU General Public License version 2 as >> > + * published by the Free Software Foundation. >> > + */ >> > + >> > +/dts-v1/; >> > +#include "exynos4412-galaxy-s3.dtsi" >> > + >> > +/ { >> > + model = "Samsung M0 (GT-I9300) based on Exynos4412"; >> > + compatible = "samsung,m0", "samsung,midas", "samsung,exynos4412", "samsung,exynos4"; >> > + >> > + memory@40000000 { >> > + device_type = "memory"; >> > + reg = <0x40000000 0x40000000>; >> >> I think each board has the same memory so maybe this can be made part >> of midas.dtsi? > > T0 and M3 have 2GB of RAM, trats2/M0 have 1GB. Ah, ok. > >> >> > + }; >> >> What about bootargs? > > Handled by the bootloader - to work around the proprietary bootloader not > supporting device tree and requiring hacks to successfully boot a > mainline kernel, i'm using kexec from a suitably patched kernel to load > and boot the "real" kernel. (This also means one image can be used > across all boards). Could you document it in DTS why bootargs are missing? Best regards, Krzysztof -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
