On 02/24/2015 06:50 PM, Arnd Bergmann wrote: > On Tuesday 24 February 2015 18:01:27 Chanwoo Choi wrote: >> On 02/24/2015 05:33 PM, Arnd Bergmann wrote: >>> On Tuesday 24 February 2015 14:16:45 Chanwoo Choi wrote: >>>> This patch adds new Exynos5433 dtsi to support 64-bit Exynos5433 SoC based on >>>> Octal core CPUs (quad Cortex-A57 and quad Cortex-A53). And Exynos5433 supports >>>> PSCI (Power State Coordination Interface) v0.1. >>>> >>>> This patch includes following dt node to support Exynos5433 SoC: >>>> 1. Octa core for big.LITTLE architecture >>>> - Cortex-A53 LITTLE Quad-core >>>> - Cortex-A57 big Quad-core >>>> - Support PSCI v0.1 >>> >>> Should we try to come up with a way to better share parts of this with the >>> exynos5 dtsi files you already have in arm32? I suspect that there is a >>> significant overlap. >> >> Currently, 32-bit Exynos5 SoC (which is included in arch/arm/boot/dts) >> didn't support the Cortex-A53/A57 and PSCI. >> >> The 32-bit Exynos5 SoC support the Coretex-A7 or A15 and big.LITTLE Exynos5 SoC >> use the MCPM (Multi-Cluster PM) driver for secondary cpu on/off instead of PSCI. >> > > Yes, I understand that. What I meant is sharing the nodes that are identical > between e.g. all exynos54xx by using a common .dtsi file that can be included > by 5420, 5433 and 5440. Exynos5433 use the quite different base address of each IP from Exynos5250/5420/5800. Exynos5433 SoC cannot use the devicetree node in Exynos5 dtsi (arch/arm/boot/dts/exynos5.dtsi). Thanks, Chanwoo Choi -- 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
