Re: [RFC] ARM: BCM: Add SMP support for Broadcom 4708
From: Hauke Mehrtens <hidden>
Date: 2015-10-23 22:38:14
Also in:
linux-arm-kernel, lkml
On 10/15/2015 08:14 PM, Jon Mason wrote:
ARM: BCM: Add SMP support for Broadcom 4708 Add SMP support for Broadcom's 4708 SoCs.
I tested this and it works on my device, it is also in OpenWrt now: https://dev.openwrt.org/browser/trunk/target/linux/bcm53xx/patches-4.1/131-ARM-BCM-Add-SMP-support-for-Broadcom-4708.patch?rev=47247
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Signed-off-by: Jon Mason <jonmason-dY08KVG/lbpWk0Htik3J/w@public.gmane.org> --- arch/arm/boot/dts/bcm4708.dtsi | 2 ++ arch/arm/boot/dts/bcm94708.dts | 2 +- arch/arm/mach-bcm/Kconfig | 1 + arch/arm/mach-bcm/Makefile | 3 +++ 4 files changed, 7 insertions(+), 1 deletion(-)diff --git a/arch/arm/boot/dts/bcm4708.dtsi b/arch/arm/boot/dts/bcm4708.dtsi index 31141e8..22a41df 100644 --- a/arch/arm/boot/dts/bcm4708.dtsi +++ b/arch/arm/boot/dts/bcm4708.dtsi@@ -15,6 +15,8 @@ cpus { #address-cells = <1>; #size-cells = <0>; + enable-method = "brcm,bcm-nsp-smp"; + secondary-boot-reg = <0xffff0400>; cpu@0 { device_type = "cpu";diff --git a/arch/arm/boot/dts/bcm94708.dts b/arch/arm/boot/dts/bcm94708.dts index f60bb1d..49682d6 100644 --- a/arch/arm/boot/dts/bcm94708.dts +++ b/arch/arm/boot/dts/bcm94708.dts@@ -32,7 +32,7 @@ /dts-v1/; -#include "bcm5301x.dtsi" +#include "bcm4708.dtsi"
This is already changed in the patch adding this file.
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/ { model = "NorthStar SVK (BCM94708)";diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig index 2e9dbb5..4fc8fa3 100644 --- a/arch/arm/mach-bcm/Kconfig +++ b/arch/arm/mach-bcm/Kconfig@@ -54,6 +54,7 @@ config ARCH_BCM_NSP config ARCH_BCM_5301X bool "Broadcom BCM470X / BCM5301X ARM SoC" if ARCH_MULTI_V7 select ARCH_BCM_IPROC + select HAVE_SMP
probably this is also needed: select ARM_ERRATA_764369 if SMP The CPU should be affected by this issue.
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help Support for Broadcom BCM470X and BCM5301X SoCs with ARM CPU cores.diff --git a/arch/arm/mach-bcm/Makefile b/arch/arm/mach-bcm/Makefile index 36a4ca30..3ca1cf1 100644 --- a/arch/arm/mach-bcm/Makefile +++ b/arch/arm/mach-bcm/Makefile@@ -43,6 +43,9 @@ obj-$(CONFIG_ARCH_BCM2835) += board_bcm2835.o # BCM5301X obj-$(CONFIG_ARCH_BCM_5301X) += bcm_5301x.o +ifeq ($(CONFIG_ARCH_BCM_5301X),y) +obj-$(CONFIG_SMP) += headsmp.o platsmp.o +endif # BCM63XXx ifeq ($(CONFIG_ARCH_BCM_63XX),y)
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