linux-kernel - [PATCH 1/2] arm64: dts: ti: k3-j721e-main: Switch MAIN R5F clusters to Split-mode

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Date:   Wed, 29 Mar 2023 12:07:27 +0530
From:   Apurva Nandan <a-nandan@...com>
To:     Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Apurva Nandan <a-nandan@...com>
Subject: [PATCH 1/2] arm64: dts: ti: k3-j721e-main: Switch MAIN R5F clusters to Split-mode

From: Suman Anna <s-anna@...com>

J721E SoCs have two R5F clusters in the MAIN domain, and both of these
are configured for LockStep mode at the moment. Switch both of these R5F
clusters to Split mode by default to maximize the number of R5F cores.
The MCU R5F cluster continues to be in the preferred LockStep mode.

Note that this configuration is the default for remoteproc mode (kernel
driver boots the R5F processors). These will be overridden for early-booted
remoteprocs through the corresponding IPC-only support in the K3 R5F
remoteproc driver.

Signed-off-by: Suman Anna <s-anna@...com>
Signed-off-by: Apurva Nandan <a-nandan@...com>
---
 arch/arm64/boot/dts/ti/k3-j721e-main.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
index c935622f0102..31dadbdc0d5a 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
@@ -1722,7 +1722,7 @@ watchdog1: watchdog@...0000 {
 
 	main_r5fss0: r5fss@...0000 {
 		compatible = "ti,j721e-r5fss";
-		ti,cluster-mode = <1>;
+		ti,cluster-mode = <0>;
 		#address-cells = <1>;
 		#size-cells = <1>;
 		ranges = <0x5c00000 0x00 0x5c00000 0x20000>,
@@ -1762,7 +1762,7 @@ main_r5fss0_core1: r5f@...0000 {
 
 	main_r5fss1: r5fss@...0000 {
 		compatible = "ti,j721e-r5fss";
-		ti,cluster-mode = <1>;
+		ti,cluster-mode = <0>;
 		#address-cells = <1>;
 		#size-cells = <1>;
 		ranges = <0x5e00000 0x00 0x5e00000 0x20000>,
-- 
2.34.1