linux-kernel - [PATCH 1/1] arm64: dts: imx8mp: remove arm,primecell-periphid at etm nodes

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Date:   Wed,  5 Jul 2023 16:59:53 -0400
From:   Frank Li <Frank.Li@....com>
To:     suzuki.poulose@....com, coresight@...ts.linaro.org,
        imx@...ts.linux.dev, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Marek Vasut <marex@...x.de>, Peng Fan <peng.fan@....com>,
        Alexander Stein <alexander.stein@...tq-group.com>,
        Lucas Stach <l.stach@...gutronix.de>,
        Adam Ford <aford173@...il.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
        DEVICE TREE BINDINGS),
        linux-arm-kernel@...ts.infradead.org (moderated list:ARM/FREESCALE IMX
        / MXC ARM ARCHITECTURE), linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 1/1] arm64: dts: imx8mp: remove arm,primecell-periphid at etm nodes

The reg size of etm nodes is incorrectly set to 64k instead of 4k. This
leads to a crash when calling amba_read_periphid().  After corrected reg
size, amba_read_periphid() retrieve the correct periphid.
arm,primecell-periphid were removed from the etm nodes.

Signed-off-by: Frank Li <Frank.Li@....com>
---
 arch/arm64/boot/dts/freescale/imx8mp.dtsi | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
index cc406bb338fe..e0ca82ff6f15 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
@@ -306,8 +306,7 @@ soc: soc@0 {
 
 		etm0: etm@...40000 {
 			compatible = "arm,coresight-etm4x", "arm,primecell";
-			reg = <0x28440000 0x10000>;
-			arm,primecell-periphid = <0xbb95d>;
+			reg = <0x28440000 0x1000>;
 			cpu = <&A53_0>;
 			clocks = <&clk IMX8MP_CLK_MAIN_AXI>;
 			clock-names = "apb_pclk";
@@ -323,8 +322,7 @@ etm0_out_port: endpoint {
 
 		etm1: etm@...40000 {
 			compatible = "arm,coresight-etm4x", "arm,primecell";
-			reg = <0x28540000 0x10000>;
-			arm,primecell-periphid = <0xbb95d>;
+			reg = <0x28540000 0x1000>;
 			cpu = <&A53_1>;
 			clocks = <&clk IMX8MP_CLK_MAIN_AXI>;
 			clock-names = "apb_pclk";
@@ -340,8 +338,7 @@ etm1_out_port: endpoint {
 
 		etm2: etm@...40000 {
 			compatible = "arm,coresight-etm4x", "arm,primecell";
-			reg = <0x28640000 0x10000>;
-			arm,primecell-periphid = <0xbb95d>;
+			reg = <0x28640000 0x1000>;
 			cpu = <&A53_2>;
 			clocks = <&clk IMX8MP_CLK_MAIN_AXI>;
 			clock-names = "apb_pclk";
@@ -357,8 +354,7 @@ etm2_out_port: endpoint {
 
 		etm3: etm@...40000 {
 			compatible = "arm,coresight-etm4x", "arm,primecell";
-			reg = <0x28740000 0x10000>;
-			arm,primecell-periphid = <0xbb95d>;
+			reg = <0x28740000 0x1000>;
 			cpu = <&A53_3>;
 			clocks = <&clk IMX8MP_CLK_MAIN_AXI>;
 			clock-names = "apb_pclk";
-- 
2.34.1