From 1e08b7c4205020df61237a6ce756e55da5ad9a92 Mon Sep 17 00:00:00 2001 From: Ondrej Jirman Date: Sat, 24 Sep 2022 21:59:07 +0200 Subject: [PATCH 186/389] arm64: dts: rockchip: rk356x: Fix PCIe register map and ranges I have two Realtek PCIe wifi cards connected over the 4 port PCIe bridge to Quartz64-A. The cards fail to work, when nvme SSD is connected at the same time to the bridge. Without nvme connected, cards work fine. The issue seems to be related to mixed use of devices which make use of I/O ranges and memory ranges. This patch changes I/O, MEM and config mappings so that config and I/O mappings use the 0xf4000000 outbound address space, and MEM range uses the whole 0x300000000 outbound space. These values were suggested by pgwipeout: https://lore.kernel.org/lkml/875ygbsrf3.fsf@bloch.sibelius.xs4all.nl/T/#m84b5f6992cc26dffe0d3783c0d8c9c86e5e10c10 This is identical to how BSP does the mappings. This change to the regs/ranges makes the issue go away and both nvme and wifi cards work when connected at the same time to the bridge. I tested the nvme with large amount of reads/writes, both behind the PCIe bridge and when directly connected to Quartz64-A board. Signed-off-by: Ondrej Jirman --- arch/arm64/boot/dts/rockchip/rk356x.dtsi | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/arch/arm64/boot/dts/rockchip/rk356x.dtsi b/arch/arm64/boot/dts/rockchip/rk356x.dtsi index 164708f1eb67..726c948ccbf0 100644 --- a/arch/arm64/boot/dts/rockchip/rk356x.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk356x.dtsi @@ -951,7 +951,8 @@ pcie2x1: pcie@fe260000 { compatible = "rockchip,rk3568-pcie"; reg = <0x3 0xc0000000 0x0 0x00400000>, <0x0 0xfe260000 0x0 0x00010000>, - <0x3 0x3f000000 0x0 0x01000000>; + <0x0 0xf4000000 0x0 0x00100000>; + reg-names = "dbi", "apb", "config"; interrupts = , , @@ -973,15 +974,17 @@ pcie2x1: pcie@fe260000 { <0 0 0 4 &pcie_intc 3>; linux,pci-domain = <0>; num-ib-windows = <6>; - num-ob-windows = <2>; + num-ob-windows = <8>; max-link-speed = <2>; msi-map = <0x0 &gic 0x0 0x1000>; num-lanes = <1>; phys = <&combphy2 PHY_TYPE_PCIE>; phy-names = "pcie-phy"; power-domains = <&power RK3568_PD_PIPE>; - ranges = <0x01000000 0x0 0x3ef00000 0x3 0x3ef00000 0x0 0x00100000 - 0x02000000 0x0 0x00000000 0x3 0x00000000 0x0 0x3ef00000>; + ranges = <0x01000000 0x0 0xf4100000 0x0 0xf4100000 0x0 0x00100000>, + <0x02000000 0x0 0xf4200000 0x0 0xf4200000 0x0 0x01e00000>, + <0x03000000 0x0 0x40000000 0x3 0x00000000 0x0 0x40000000>; + resets = <&cru SRST_PCIE20_POWERUP>; reset-names = "pipe"; #address-cells = <3>; -- 2.35.3