linux-kernel - [PATCH 2/2] ARM: dts: am5729-beaglebone-ai: Disable ununsed mailboxes

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Date:   Thu, 11 Jun 2020 10:29:45 -0500
From:   Suman Anna <s-anna@...com>
To:     Tony Lindgren <tony@...mide.com>
CC:     Jason Kridner <jdk@...com>, Caleb Robey <c-robey@...com>,
        Drew Fustini <drew@...gleboard.org>,
        Robert Nelson <robertcnelson@...il.com>,
        <linux-omap@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Suman Anna <s-anna@...com>
Subject: [PATCH 2/2] ARM: dts: am5729-beaglebone-ai: Disable ununsed mailboxes

The IPU and DSP remote processors use sub-mailbox nodes only from a
limited set of System Mailboxes 5 and 6 to achieve the Remote Processor
Messaging (RPMsg) communication stack between the MPU host processor
and the respective remote processor. These are all defined and enabled
through the inherited common dra74-ipu-dsp-common.dtsi file.

The other System Mailboxes do not define any actual sub-mailboxes, so
they serve no purpose and can all be safely dropped.

Signed-off-by: Suman Anna <s-anna@...com>
---
 arch/arm/boot/dts/am5729-beagleboneai.dts | 52 -----------------------
 1 file changed, 52 deletions(-)

diff --git a/arch/arm/boot/dts/am5729-beagleboneai.dts b/arch/arm/boot/dts/am5729-beagleboneai.dts
index 619e75927224..d3e345d6634a 100644
--- a/arch/arm/boot/dts/am5729-beagleboneai.dts
+++ b/arch/arm/boot/dts/am5729-beagleboneai.dts
@@ -630,58 +630,6 @@ &bandgap {
 	status = "okay";
 };
 
-&mailbox1 {
-	status = "okay";
-};
-
-&mailbox2 {
-	status = "okay";
-};
-
-&mailbox3 {
-	status = "okay";
-};
-
-&mailbox4 {
-	status = "okay";
-};
-
-&mailbox5 {
-	status = "okay";
-};
-
-&mailbox6 {
-	status = "okay";
-};
-
-&mailbox7 {
-	status = "okay";
-};
-
-&mailbox8 {
-	status = "okay";
-};
-
-&mailbox9 {
-	status = "okay";
-};
-
-&mailbox10 {
-	status = "okay";
-};
-
-&mailbox11 {
-	status = "okay";
-};
-
-&mailbox12 {
-	status = "okay";
-};
-
-&mailbox13 {
-	status = "okay";
-};
-
 &cpu_alert0 {
 	temperature = <55000>; /* milliCelsius */
 };
-- 
2.26.0