From 47f28b41df6ba2efd05db705689617b969589168 Mon Sep 17 00:00:00 2001
From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Thu, 27 Jun 2019 13:55:53 +0200
Subject: ARM: dts: exynos: Fix imprecise abort on Mali GPU probe on Exynos4210

The PMU module of Mali400 GPU is optional and it looks that it is not
present on Exynos4210, because any access to its registers causes external
abort. This patch removes "pmu" interrupt for Exynos4210 SoCs, so the
driver will skip the PMU module. This fixes following fault during kernel
boot:

    Unhandled fault: imprecise external abort (0x1406) at 0x00000000
    (lima_pmu_init) from [<c059e6f8>] (lima_device_init+0x244/0x5a0)
    (lima_device_init) from [<c059e40c>] (lima_pdev_probe+0x7c/0xd8)
    (lima_pdev_probe) from [<c05afcb8>] (platform_drv_probe+0x48/0x9c)
    (platform_drv_probe) from [<c05ad594>] (really_probe+0x1c4/0x400)
    (really_probe) from [<c05ad988>] (driver_probe_device+0x78/0x1b8)
    (driver_probe_device) from [<c05add30>] (device_driver_attach+0x58/0x60)
    (device_driver_attach) from [<c05ade34>] (__driver_attach+0xfc/0x160)
    (__driver_attach) from [<c05ab650>] (bus_for_each_dev+0x68/0xb4)
    (bus_for_each_dev) from [<c05ac734>] (bus_add_driver+0x104/0x20c)
    (bus_add_driver) from [<c05aece0>] (driver_register+0x78/0x10c)
    (driver_register) from [<c0103214>] (do_one_initcall+0x8c/0x430)
    (do_one_initcall) from [<c0f01328>] (kernel_init_freeable+0x3c8/0x4d0)
    (kernel_init_freeable) from [<c0ac3aa0>] (kernel_init+0x8/0x10c)
    (kernel_init) from [<c01010b4>] (ret_from_fork+0x14/0x20)

The PMU module seems to work fine on Exynos4412 SoCs, so the patch also
moves the interrupt definitions to exynos4210.dtsi and exynos4412.dtsi
respectively, to keep only the common part in exynos4.dtsi.

Fixes: 13efd80acaa4 ("ARM: dts: exynos: Add GPU/Mali 400 node to Exynos4")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 arch/arm/boot/dts/exynos4210.dtsi | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'arch/arm/boot/dts/exynos4210.dtsi')

diff --git a/arch/arm/boot/dts/exynos4210.dtsi b/arch/arm/boot/dts/exynos4210.dtsi
index 6122da368092..f220716239db 100644
--- a/arch/arm/boot/dts/exynos4210.dtsi
+++ b/arch/arm/boot/dts/exynos4210.dtsi
@@ -450,6 +450,26 @@
 };
 
 &gpu {
+	interrupts = <GIC_SPI 127 IRQ_TYPE_LEVEL_HIGH>,
+		     <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
+		     <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
+		     <GIC_SPI 118 IRQ_TYPE_LEVEL_HIGH>,
+		     <GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>,
+		     <GIC_SPI 119 IRQ_TYPE_LEVEL_HIGH>,
+		     <GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>,
+		     <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>,
+		     <GIC_SPI 126 IRQ_TYPE_LEVEL_HIGH>,
+		     <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>;
+	interrupt-names = "gp",
+			  "gpmmu",
+			  "pp0",
+			  "ppmmu0",
+			  "pp1",
+			  "ppmmu1",
+			  "pp2",
+			  "ppmmu2",
+			  "pp3",
+			  "ppmmu3";
 	operating-points-v2 = <&gpu_opp_table>;
 
 	gpu_opp_table: opp_table {
-- 
cgit