linux-kernel - [PATCH 1/4] ARM: dts: AM33xx: Add ti,mbox-send-noirq to wkup

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

Date:	Fri, 17 Jul 2015 16:08:01 -0500
From:	Dave Gerlach <d-gerlach@...com>
To:	<linux-arm-kernel@...ts.infradead.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-omap@...r.kernel.org>
CC:	Jassi Brar <jassisinghbrar@...il.com>,
	Santosh Shilimkar <ssantosh@...nel.org>,
	Suman Anna <s-anna@...com>, Dave Gerlach <d-gerlach@...com>,
	Keerthy <j-keerthy@...com>, Tony Lindgren <tony@...mide.com>
Subject: [PATCH 1/4] ARM: dts: AM33xx: Add ti,mbox-send-noirq to wkup_m3 mailbox

Add ti,mbox-send-noirq to wkup_m3 mailbox so that messages using
wkup_m3 mailbox are sent without triggering any further interrupts.
This is needed to achieve lower power numbers during CPU idle on
AM33xx.

Signed-off-by: Dave Gerlach <d-gerlach@...com>
[s-anna@...com: revise commit description]
Signed-off-by: Suman Anna <s-anna@...com>
---
 arch/arm/boot/dts/am33xx.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
index 4c1b4a8..4f2c07a 100644
--- a/arch/arm/boot/dts/am33xx.dtsi
+++ b/arch/arm/boot/dts/am33xx.dtsi
@@ -391,6 +391,7 @@
 			ti,mbox-num-users = <4>;
 			ti,mbox-num-fifos = <8>;
 			mbox_wkupm3: wkup_m3 {
+				ti,mbox-send-noirq;
 				ti,mbox-tx = <0 0 0>;
 				ti,mbox-rx = <0 0 3>;
 			};
-- 
2.4.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/