From 51841bdbe5a93374c3d6217b55d4334237c37100 Mon Sep 17 00:00:00 2001 From: Jon Hunter Date: Thu, 16 Jan 2025 15:19:03 +0000 Subject: [PATCH] arm64: tegra: Resize aperture for the IGX PCIe C5 slot Some discrete graphics cards such as the NVIDIA RTX A6000 support resizable BARs. When connecting an A6000 card to the NVIDIA IGX Orin platform, resizing the BAR1 aperture to 8GB fails because the current device-tree configuration for the PCIe C5 slot cannot support this. Fix this by updating the device-tree 'reg' and 'ranges' properties for the PCIe C5 slot to support this. Signed-off-by: Jon Hunter Link: https://lore.kernel.org/r/20250116151903.476047-1-jonathanh@nvidia.com Signed-off-by: Thierry Reding (cherry picked from commit 6d4bfe6d86af1ef52bdb4592c9afb2037f24f2c4 mainline) Bug 4309882 Change-Id: If6f66d5ee77ac3e7b13a31e9aed958b3008c2e45 Signed-off-by: Yi Ju Huang Reviewed-on: https://git-master.nvidia.com/r/c/device/hardware/nvidia/t23x-public-dts/+/3344136 (cherry picked from commit 3ad362efba776b7b6ac22c7abde7b479f342fbd8) Reviewed-on: https://git-master.nvidia.com/r/c/device/hardware/nvidia/t23x-public-dts/+/3345344 GVS: buildbot_gerritrpt Reviewed-by: Brad Griffis --- tegra234-p3740-0002+p3701-0008.dts | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/tegra234-p3740-0002+p3701-0008.dts b/tegra234-p3740-0002+p3701-0008.dts index 36e8880..9ce55b4 100644 --- a/tegra234-p3740-0002+p3701-0008.dts +++ b/tegra234-p3740-0002+p3701-0008.dts @@ -302,6 +302,16 @@ }; pcie@141a0000 { + reg = <0x00 0x141a0000 0x0 0x00020000 /* appl registers (128K) */ + 0x00 0x3a000000 0x0 0x00040000 /* configuration space (256K) */ + 0x00 0x3a040000 0x0 0x00040000 /* iATU_DMA reg space (256K) */ + 0x00 0x3a080000 0x0 0x00040000 /* DBI reg space (256K) */ + 0x2e 0x20000000 0x0 0x10000000>; /* ECAM (256MB) */ + + ranges = <0x81000000 0x00 0x3a100000 0x00 0x3a100000 0x0 0x00100000 /* downstream I/O (1MB) */ + 0x82000000 0x00 0x40000000 0x2e 0x30000000 0x0 0x08000000 /* non-prefetchable memory (128MB) */ + 0xc3000000 0x28 0x00000000 0x28 0x00000000 0x6 0x20000000>; /* prefetchable memory (25088MB) */ + status = "okay"; vddio-pex-ctl-supply = <&vdd_1v8_ls>; phys = <&p2u_nvhs_0>, <&p2u_nvhs_1>, <&p2u_nvhs_2>,