Hi Sachin, Am Donnerstag, 1. Mai 2014, 16:14:44 schrieb Sachin Kamat: > Instead of hardcoding the SYSRAM details for each SoC, > pass this information through device tree (DT) and make > the code SoC agnostic. Generic SRAM bindings are used > for achieving this. > > Signed-off-by: Sachin Kamat <sachin.kamat@xxxxxxxxxx> > Cc: Heiko Stuebner <heiko@xxxxxxxxx> > Cc: Arnd Bergmann <arnd@xxxxxxxx> very cool :-). I've found one little thing I do not understand, which I describe below. Otherwise Acked-by: Heiko Stuebner <heiko@xxxxxxxxx> > --- > This patch is based on linux next (next-20140501) on top of > my Kconfig consolidation patch > http://comments.gmane.org/gmane.linux.kernel.samsung-soc/28642 > > Tested on 4210/4412 Origen, 5250/5420 Arndale and SMDK5420 boards. > --- > arch/arm/Kconfig | 1 + > arch/arm/boot/dts/exynos4210-universal_c210.dts | 17 ++++++ > arch/arm/boot/dts/exynos4210.dtsi | 18 +++++++ > arch/arm/boot/dts/exynos4x12.dtsi | 18 +++++++ > arch/arm/boot/dts/exynos5250.dtsi | 18 +++++++ > arch/arm/boot/dts/exynos5420.dtsi | 18 +++++++ > arch/arm/mach-exynos/common.h | 1 + > arch/arm/mach-exynos/exynos.c | 64 > ----------------------- arch/arm/mach-exynos/firmware.c | > 5 +- > arch/arm/mach-exynos/include/mach/map.h | 7 --- > arch/arm/mach-exynos/platsmp.c | 39 +++++++++++++- > 11 files changed, 133 insertions(+), 73 deletions(-) > > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig > index a6aaaad19b1a..f66ea9453df9 100644 > --- a/arch/arm/Kconfig > +++ b/arch/arm/Kconfig > @@ -855,6 +855,7 @@ config ARCH_EXYNOS > select S5P_DEV_MFC > select SAMSUNG_DMADEV > select SPARSE_IRQ > + select SRAM > select USE_OF > help > Support for SAMSUNG's EXYNOS SoCs (EXYNOS4/5) > diff --git a/arch/arm/boot/dts/exynos4210-universal_c210.dts > b/arch/arm/boot/dts/exynos4210-universal_c210.dts index > 63e34b24b04f..8d4de5c0d0c7 100644 > --- a/arch/arm/boot/dts/exynos4210-universal_c210.dts > +++ b/arch/arm/boot/dts/exynos4210-universal_c210.dts > @@ -28,6 +28,23 @@ > bootargs = "console=ttySAC2,115200N8 root=/dev/mmcblk0p5 rw rootwait > earlyprintk panic=5 maxcpus=1"; }; > > + sram@02020000 { > + status = "disabled"; > + }; > + > + sram@02025000 { > + compatible = "mmio-sram"; > + reg = <0x02025000 0x1000>; > + #address-cells = <1>; > + #size-cells = <1>; > + ranges = <0 0x02025000 0x1000>; > + > + smp-sram@0 { > + compatible = "samsung,exynos4210-sram"; > + reg = <0x0 0x1000>; > + }; > + }; exynos_smp_prepare_sram returns -ENODEV if it can't find samsung,exynos4210-sram-ns, so are you sure your universal_c210 will run without it? I didn't dig to deep into this, so it can also simply be something I overlooked :-) Heiko -- 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
