linux-kernel - Re: [PATCH v3 2/4] arm64: dts: exynos: gs101: add AP to APM mailbox node

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <f5e3d00e-8f98-46c6-8f1a-85a2169324ee@kernel.org>
Date: Sun, 22 Dec 2024 12:47:15 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Tudor Ambarus <tudor.ambarus@...aro.org>,
 Peter Griffin <peter.griffin@...aro.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Alim Akhtar <alim.akhtar@...sung.com>,
 Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 andre.draszik@...aro.org, kernel-team@...roid.com, willmcvicker@...gle.com,
 daniel.lezcano@...aro.org, vincent.guittot@...aro.org,
 ulf.hansson@...aro.org, arnd@...db.de, Jassi Brar <jassisinghbrar@...il.com>
Subject: Re: [PATCH v3 2/4] arm64: dts: exynos: gs101: add AP to APM mailbox
 node

On 20/12/2024 15:45, Tudor Ambarus wrote:
> GS101 has 14 mailbox controllers. Add the AP to APM mailbox node.
> 
> Mailbox controllers have a shared register that can be used for passing
> the mailbox messages. The AP to APM mailbox controller is used just as a
> doorbell mechanism. It raises interrupt to the firmware after the mailbox
> message has been written to SRAM where the TX/RX rings are defined.
> 
> Signed-off-by: Tudor Ambarus <tudor.ambarus@...aro.org>
> ---
>  arch/arm64/boot/dts/exynos/google/gs101.dtsi | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/exynos/google/gs101.dtsi b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
> index 1441e9a252c2..6947dd081a0e 100644
> --- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi
> +++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
> @@ -1445,6 +1445,15 @@ wakeup-interrupt-controller {
>  			};
>  		};
>  
> +		ap2apm_mailbox: mailbox@...10000 {
> +			compatible = "google,gs101-mbox";


I don't think I have this in my tree and cover letter does not explain
where I can find bindings. Nothing in next from few days ago. Always
document in DTS patchset where are the bindings, unless it's obvious.

Best regards,
Krzysztof