From: Pali Rohár Date: Wed, 26 May 2021 15:59:39 +0000 (+0200) Subject: arm: a37xx: pci: Increase PCIe MEM size from 16 MiB to 127 MiB X-Git-Url: http://git.dujemihanovic.xyz/%7B%7B%20%24style.Permalink%20%7D%7D?a=commitdiff_plain;h=079b35a26111715043f1a144b10f5d313db36167;p=u-boot.git arm: a37xx: pci: Increase PCIe MEM size from 16 MiB to 127 MiB For some configurations with more PCIe cards and PCIe bridges, 16 MiB of PCIe MEM space may not be enough. Since TF-A already allocates a 128 MiB CPU window for PCIe, and since IO port space is only 64 KiB in total, use all the remaining space (64 + 32 + 16 + 8 + 4 + 2 + 1 = 127 MiB) for PCIe MEM. Signed-off-by: Pali Rohár Reviewed-by: Marek Behún Reviewed-by: Stefan Roese --- diff --git a/arch/arm/dts/armada-37xx.dtsi b/arch/arm/dts/armada-37xx.dtsi index b7d325b405..2615b8c748 100644 --- a/arch/arm/dts/armada-37xx.dtsi +++ b/arch/arm/dts/armada-37xx.dtsi @@ -332,10 +332,17 @@ status = "disabled"; bus-range = <0 0xff>; + /* + * The 128 MiB address range [0xe8000000-0xf0000000] is + * dedicated for PCIe and can be assigned to 8 windows + * with size a power of two. Use one 64 KiB window for + * IO at the end and the remaining seven windows + * (totaling 127 MiB) for MEM. + */ ranges = <0x82000000 0 0xe8000000 - 0 0xe8000000 0 0x1000000 /* Port 0 MEM */ - 0x81000000 0 0xe9000000 - 0 0xe9000000 0 0x10000>; /* Port 0 IO*/ + 0 0xe8000000 0 0x7f00000 /* Port 0 MEM */ + 0x81000000 0 0xefff0000 + 0 0xefff0000 0 0x10000>; /* Port 0 IO*/ }; }; };