linux-kernel - Re: [PATCH 6/7] riscv: dts: Add Tenstorrent Blackhole A0 SoC PCIe cards

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Message-ID: <70241f44-2f8d-4945-9c84-71416776cefd@codethink.co.uk>
Date: Tue, 16 Sep 2025 14:56:05 +0100
From: Ben Dooks <ben.dooks@...ethink.co.uk>
To: Drew Fustini <fustini@...nel.org>, Conor Dooley <conor@...nel.org>
Cc: Paul Walmsley <paul.walmsley@...ive.com>,
 Palmer Dabbelt <palmer@...belt.com>, Alexandre Ghiti <alex@...ti.fr>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>,
 Samuel Holland <samuel.holland@...ive.com>,
 Daniel Lezcano <daniel.lezcano@...aro.org>,
 Thomas Gleixner <tglx@...utronix.de>, Anup Patel <anup@...infault.org>,
 Arnd Bergmann <arnd@...db.de>, Joel Stanley <jms@...storrent.com>,
 Joel Stanley <joel@....id.au>, Michael Neuling <mikey@...ling.org>,
 Nicholas Piggin <npiggin@...il.com>, Michael Ellerman <mpe@...nel.org>,
 Andy Gross <agross@...nel.org>, linux-riscv@...ts.infradead.org,
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
 Drew Fustini <dfustini@...storrent.com>
Subject: Re: [PATCH 6/7] riscv: dts: Add Tenstorrent Blackhole A0 SoC PCIe
 cards

On 15/09/2025 18:52, Drew Fustini wrote:
> On Mon, Sep 15, 2025 at 05:47:08PM +0100, Conor Dooley wrote:
>> On Sat, Sep 13, 2025 at 02:31:05PM -0700, Drew Fustini wrote:
>>> new file mode 100644
>>> index 0000000000000000000000000000000000000000..b2b08023643a2cebd4f924579024290bb355c9b3
>>> --- /dev/null
>>> +++ b/arch/riscv/boot/dts/tenstorrent/blackhole-a0-card.dts
>>> @@ -0,0 +1,14 @@
>>> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
>>> +/dts-v1/;
>>> +
>>> +#include "blackhole-a0.dtsi"
>>> +
>>> +/ {
>>> +	model = "Tenstorrent Blackhole A0 SoC PCIe card";
>>> +	compatible = "tenstorrent,blackhole-a0-card", "tenstorrent,blackhole-a0";
>>> +
>>> +	memory@0 {
>>> +		device_type = "memory";
>>> +		reg = <0x4000 0x30000000 0x1 0x00000000>;
>>
>> This isn't at address zero as the node address claims.
> 
> Thanks, I'll fix the unit address.

Is it time to just assume any dtc can handle a 64bit number?


-- 
Ben Dooks				http://www.codethink.co.uk/
Senior Engineer				Codethink - Providing Genius

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