On 12/14/2019 2:04 PM, H. Nikolaus Schaller wrote:

commit 781fa0a95424 ("ARM: bcm: Add support for BCM2711 SoC")

breaks boot of many other platforms (e.g. OMAP or i.MX6) if CONFIG_ARCH_BCM2835 is enabled in addition to some multiplatform config (e.g. omap2plus_defconfig). The symptom is that the OMAP based board does not show any activity beyond "Starting Kernel ..." even with earlycon.

Reverting the mentioned commit makes it work again.

The real fix is to add the missing NULL sentinel to the bcm2711_compat[] variable-length array.

Fixes: 781fa0a95424 ("ARM: bcm: Add support for BCM2711 SoC") Acked-by: Stefan Wahren wahrenst@gmx.net Signed-off-by: H. Nikolaus Schaller hns@goldelico.com

This looks fine, I would just rephrase the commit subject as:

ARM: bcm: Add missing sentinel to bcm2711_compat[]

instead of indicating the breakage but not so much the fix, if that is okay with you. And good catch, I will augment my local tests with a basic multiplatform boot on several QEMU supported platforms.

---

arch/arm/mach-bcm/bcm2711.c | 1 + 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-bcm/bcm2711.c b/arch/arm/mach-bcm/bcm2711.c index dbe296798647..fa0300d8c79d 100644 --- a/arch/arm/mach-bcm/bcm2711.c +++ b/arch/arm/mach-bcm/bcm2711.c @@ -13,6 +13,7 @@ static const char * const bcm2711_compat[] = { #ifdef CONFIG_ARCH_MULTI_V7 "brcm,bcm2711", #endif

• NULL

};

DT_MACHINE_START(BCM2711, "BCM2711")