From: "Rob Herring (Arm)" <robh@kernel.org>
To: Billy Tsai <billy_tsai@aspeedtech.com>
Cc: Lee Jones <lee@kernel.org>,
linux-arm-kernel@lists.infradead.org,
Conor Dooley <conor+dt@kernel.org>,
Linus Walleij <linusw@kernel.org>,
Bartosz Golaszewski <brgl@kernel.org>,
linux-aspeed@lists.ozlabs.org, openbmc@lists.ozlabs.org,
linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org,
linux-clk@vger.kernel.org, Andrew Jeffery <andrew@aj.id.au>,
Joel Stanley <joel@jms.id.au>,
Andrew Jeffery <andrew@codeconstruct.com.au>,
Ryan Chen <ryan_chen@aspeedtech.com>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
devicetree@vger.kernel.org
Subject: Re: [PATCH v8 2/3] dt-bindings: mfd: aspeed,ast2x00-scu: Describe AST2700 SCU0
Date: Tue, 5 May 2026 20:31:20 -0500 [thread overview]
Message-ID: <177803108003.262903.4940784340519563848.robh@kernel.org> (raw)
In-Reply-To: <20260428-upstream_pinctrl-v8-2-eb8ef9ab0498@aspeedtech.com>
On Tue, 28 Apr 2026 17:49:46 +0800, Billy Tsai wrote:
> AST2700 consists of two interconnected SoC instances, each with its own
> System Control Unit (SCU). The SCU0 provides pin control, interrupt
> controllers, clocks, resets, and address-space mappings for the
> Secondary and Tertiary Service Processors (SSP and TSP).
>
> Describe the SSP/TSP address mappings using the standard
> memory-region and memory-region-names properties.
>
> Disallow legacy child nodes that are not present on AST2700, including
> p2a-control and smp-memram. The latter is unnecessary as software can
> access the scratch registers via the SCU syscon.
>
> Also allow the AST2700 SoC0 pin controller to be described as a child
> node of the SCU0, and add an example illustrating the SCU0 layout,
> including reserved-memory, interrupt controllers, and pinctrl.
>
> Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
> ---
> .../bindings/mfd/aspeed,ast2x00-scu.yaml | 114 +++++++++++++++++++++
> 1 file changed, 114 insertions(+)
>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
next prev parent reply other threads:[~2026-05-06 1:31 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-28 9:49 [PATCH v8 0/3] pinctrl: aspeed: Add AST2700 SoC0 support Billy Tsai
2026-04-28 9:49 ` [PATCH v8 1/3] dt-bindings: pinctrl: Add aspeed,ast2700-soc0-pinctrl Billy Tsai
2026-05-06 1:29 ` Rob Herring
2026-04-28 9:49 ` [PATCH v8 2/3] dt-bindings: mfd: aspeed,ast2x00-scu: Describe AST2700 SCU0 Billy Tsai
2026-05-06 1:31 ` Rob Herring (Arm) [this message]
2026-04-28 9:49 ` [PATCH v8 3/3] pinctrl: aspeed: Add AST2700 SoC0 support Billy Tsai
2026-04-29 1:56 ` [PATCH v8 0/3] " Stephen Boyd
2026-04-29 9:44 ` Billy Tsai
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