linux-kernel - [PATCH 5.18 156/181] arm64: dts: ti: k3-j721s2: Fix overlapping GICD memory region

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Message-Id: <20220627111949.208954690@linuxfoundation.org>
Date:   Mon, 27 Jun 2022 13:22:09 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, linux-stable@...r.kernel.org,
        Marc Zyngier <maz@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Nishanth Menon <nm@...com>, Matt Ranostay <mranostay@...com>
Subject: [PATCH 5.18 156/181] arm64: dts: ti: k3-j721s2: Fix overlapping GICD memory region

From: Matt Ranostay <mranostay@...com>

commit 856216b70a41ff3f8c866b627546afa01567b389 upstream.

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@...000/interrupt-controller@...0000: couldn't map region 0

Fixes: b8545f9d3a54 ("arm64: dts: ti: Add initial support for J721S2 SoC")
Cc: linux-stable@...r.kernel.org
Cc: Marc Zyngier <maz@...nel.org>
Cc: Robin Murphy <robin.murphy@....com>
Cc: Nishanth Menon <nm@...com>
Signed-off-by: Matt Ranostay <mranostay@...com>
Acked-by: Marc Zyngier <maz@...nel.org>
Signed-off-by: Nishanth Menon <nm@...com>
Link: https://lore.kernel.org/r/20220617151304.446607-1-mranostay@ti.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
@@ -33,7 +33,7 @@
 		ranges;
 		#interrupt-cells = <3>;
 		interrupt-controller;
-		reg = <0x00 0x01800000 0x00 0x200000>, /* GICD */
+		reg = <0x00 0x01800000 0x00 0x100000>, /* GICD */
 		      <0x00 0x01900000 0x00 0x100000>, /* GICR */
 		      <0x00 0x6f000000 0x00 0x2000>,   /* GICC */
 		      <0x00 0x6f010000 0x00 0x1000>,   /* GICH */