Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Fri, 17 Jun 2022 16:40:26 +0100
Message-ID: <87ilozpac5.wl-maz@kernel.org>
From:   Marc Zyngier <maz@kernel.org>
To:     Matt Ranostay <mranostay@ti.com>
Cc:     <linux-arm-kernel@lists.infradead.org>,
        <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <linux-stable@vger.kernel.org>,
        Robin Murphy <robin.murphy@arm.com>, Nishanth Menon <nm@ti.com>
Subject: Re: [PATCH v3] arm64: dts: ti: k3-j721s2: fix overlapping GICD memory region
In-Reply-To: <20220617151304.446607-1-mranostay@ti.com>
References: <20220617151304.446607-1-mranostay@ti.com>
User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue)
 FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/27.1
 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO)
MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue")
Content-Type: text/plain; charset=US-ASCII
Precedence: bulk

On Fri, 17 Jun 2022 16:13:04 +0100,
Matt Ranostay <mranostay@ti.com> wrote:
> 
> GICD region was overlapping with GICR causing the latter to not map
> successfully, and in turn the gic-v3 driver would fail to initialize.
> 
> This issue was hidden till commit 2b2cd74a06c3 ("irqchip/gic-v3: Claim
> iomem resources") replaced of_iomap() calls with of_io_request_and_map()
> that internally called request_mem_region().
> 
> Respective console output before this patchset:
> 
> [    0.000000] GICv3: /bus@100000/interrupt-controller@1800000: couldn't map region 0
> 
> Fixes: b8545f9d3a54 ("arm64: dts: ti: Add initial support for J721S2 SoC")
> Cc: linux-stable@vger.kernel.org
> Cc: Marc Zyngier <maz@kernel.org>
> Cc: Robin Murphy <robin.murphy@arm.com>
> Cc: Nishanth Menon <nm@ti.com>
> Signed-off-by: Matt Ranostay <mranostay@ti.com>

Acked-by: Marc Zyngier <maz@kernel.org>

	M.

-- 
Without deviation from the norm, progress is not possible.