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Message-ID: <d7e37f3c-9d4c-a12d-bd29-df12f5ffb26d@nvidia.com>
Date: Mon, 6 Jul 2020 19:09:17 +0100
From: Jon Hunter <jonathanh@...dia.com>
To: Vidya Sagar <vidyas@...dia.com>, <robh+dt@...nel.org>,
<treding@...dia.com>, <thierry.reding@...il.com>
CC: <lorenzo.pieralisi@....com>, <amurray@...goodpenguin.co.uk>,
<bhelgaas@...gle.com>, <linux-tegra@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <kthota@...dia.com>,
<mmaddireddy@...dia.com>, <sagar.tv@...il.com>
Subject: Re: [PATCH] arm64: tegra: Re-order PCIe aperture mappings
On 06/07/2020 18:14, Vidya Sagar wrote:
> Re-order Tegra194's PCIe aperture mappings to have IO window moved to
> 64-bit aperture and have the entire 32-bit aperture used for accessing
> the configuration space. This makes it to use the entire 32MB of the 32-bit
> aperture for ECAM purpose while booting through ACPI.
>
> Signed-off-by: Vidya Sagar <vidyas@...dia.com>
> ---
> arch/arm64/boot/dts/nvidia/tegra194.dtsi | 36 ++++++++++++------------
> 1 file changed, 18 insertions(+), 18 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
> index 4bc187a4eacd..2b378fa06d19 100644
> --- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
> +++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
> @@ -1404,9 +1404,9 @@
> nvidia,aspm-l0s-entrance-latency-us = <3>;
>
> bus-range = <0x0 0xff>;
> - ranges = <0x81000000 0x0 0x30100000 0x0 0x30100000 0x0 0x00100000 /* downstream I/O (1MB) */
> - 0xc3000000 0x12 0x00000000 0x12 0x00000000 0x0 0x30000000 /* prefetchable memory (768MB) */
> - 0x82000000 0x0 0x40000000 0x12 0x30000000 0x0 0x10000000>; /* non-prefetchable memory (256MB) */
> + ranges = <0xc3000000 0x12 0x00000000 0x12 0x00000000 0x0 0x30000000 /* prefetchable memory (768MB) */
> + 0x82000000 0x00 0x40000000 0x12 0x30000000 0x0 0x0fff0000 /* non-prefetchable memory (256MB - 64KB) */
> + 0x81000000 0x00 0x00000000 0x12 0x3fff0000 0x0 0x00010000>; /* downstream I/O (64KB) */
> };
>
> pcie@...20000 {
> @@ -1449,9 +1449,9 @@
> nvidia,aspm-l0s-entrance-latency-us = <3>;
>
> bus-range = <0x0 0xff>;
> - ranges = <0x81000000 0x0 0x32100000 0x0 0x32100000 0x0 0x00100000 /* downstream I/O (1MB) */
> - 0xc3000000 0x12 0x40000000 0x12 0x40000000 0x0 0x30000000 /* prefetchable memory (768MB) */
> - 0x82000000 0x0 0x40000000 0x12 0x70000000 0x0 0x10000000>; /* non-prefetchable memory (256MB) */
> + ranges = <0xc3000000 0x12 0x40000000 0x12 0x40000000 0x0 0x30000000 /* prefetchable memory (768MB) */
> + 0x82000000 0x00 0x40000000 0x12 0x70000000 0x0 0x0fff0000 /* non-prefetchable memory (256MB - 64KB) */
> + 0x81000000 0x00 0x00000000 0x12 0x7fff0000 0x0 0x00010000>; /* downstream I/O (64KB) */
> };
>
> pcie@...40000 {
> @@ -1494,9 +1494,9 @@
> nvidia,aspm-l0s-entrance-latency-us = <3>;
>
> bus-range = <0x0 0xff>;
> - ranges = <0x81000000 0x0 0x34100000 0x0 0x34100000 0x0 0x00100000 /* downstream I/O (1MB) */
> - 0xc3000000 0x12 0x80000000 0x12 0x80000000 0x0 0x30000000 /* prefetchable memory (768MB) */
> - 0x82000000 0x0 0x40000000 0x12 0xb0000000 0x0 0x10000000>; /* non-prefetchable memory (256MB) */
> + ranges = <0xc3000000 0x12 0x80000000 0x12 0x80000000 0x0 0x30000000 /* prefetchable memory (768MB) */
> + 0x82000000 0x00 0x40000000 0x12 0xb0000000 0x0 0x0fff0000 /* non-prefetchable memory (256MB - 64KB) */
> + 0x81000000 0x00 0x00000000 0x12 0xbfff0000 0x0 0x00010000>; /* downstream I/O (64KB) */
> };
>
> pcie@...60000 {
> @@ -1539,9 +1539,9 @@
> nvidia,aspm-l0s-entrance-latency-us = <3>;
>
> bus-range = <0x0 0xff>;
> - ranges = <0x81000000 0x0 0x36100000 0x0 0x36100000 0x0 0x00100000 /* downstream I/O (1MB) */
> - 0xc3000000 0x14 0x00000000 0x14 0x00000000 0x3 0x40000000 /* prefetchable memory (13GB) */
> - 0x82000000 0x0 0x40000000 0x17 0x40000000 0x0 0xc0000000>; /* non-prefetchable memory (3GB) */
> + ranges = <0xc3000000 0x14 0x00000000 0x14 0x00000000 0x3 0x40000000 /* prefetchable memory (13GB) */
> + 0x82000000 0x00 0x40000000 0x17 0x40000000 0x0 0xbfff0000 /* non-prefetchable memory (3GB - 64KB) */
> + 0x81000000 0x00 0x00000000 0x17 0xffff0000 0x0 0x00010000>; /* downstream I/O (64KB) */
> };
>
> pcie@...80000 {
> @@ -1584,9 +1584,9 @@
> nvidia,aspm-l0s-entrance-latency-us = <3>;
>
> bus-range = <0x0 0xff>;
> - ranges = <0x81000000 0x0 0x38100000 0x0 0x38100000 0x0 0x00100000 /* downstream I/O (1MB) */
> - 0xc3000000 0x18 0x00000000 0x18 0x00000000 0x3 0x40000000 /* prefetchable memory (13GB) */
> - 0x82000000 0x0 0x40000000 0x1b 0x40000000 0x0 0xc0000000>; /* non-prefetchable memory (3GB) */
> + ranges = <0xc3000000 0x18 0x00000000 0x18 0x00000000 0x3 0x40000000 /* prefetchable memory (13GB) */
> + 0x82000000 0x00 0x40000000 0x1b 0x40000000 0x0 0xbfff0000 /* non-prefetchable memory (3GB - 64KB) */
> + 0x81000000 0x00 0x00000000 0x1b 0xffff0000 0x0 0x00010000>; /* downstream I/O (64KB) */
> };
>
> pcie@...a0000 {
> @@ -1633,9 +1633,9 @@
> nvidia,aspm-l0s-entrance-latency-us = <3>;
>
> bus-range = <0x0 0xff>;
> - ranges = <0x81000000 0x0 0x3a100000 0x0 0x3a100000 0x0 0x00100000 /* downstream I/O (1MB) */
> - 0xc3000000 0x1c 0x00000000 0x1c 0x00000000 0x3 0x40000000 /* prefetchable memory (13GB) */
> - 0x82000000 0x0 0x40000000 0x1f 0x40000000 0x0 0xc0000000>; /* non-prefetchable memory (3GB) */
> + ranges = <0xc3000000 0x1c 0x00000000 0x1c 0x00000000 0x3 0x40000000 /* prefetchable memory (13GB) */
> + 0x82000000 0x00 0x40000000 0x1f 0x40000000 0x0 0xbfff0000 /* non-prefetchable memory (3GB - 64KB) */
> + 0x81000000 0x00 0x00000000 0x1f 0xffff0000 0x0 0x00010000>; /* downstream I/O (64KB) */
> };
>
> pcie_ep@...60000 {
>
Acked-by: Jon Hunter <jonathanh@...dia.com>
Cheers!
Jon
--
nvpublic
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