linux-kernel - [PATCH V2] arm: dts: imx7ulp: fix reg of cpu node

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Date:   Wed, 18 Dec 2019 12:22:32 +0000
From:   Peng Fan <peng.fan@....com>
To:     "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        "baruch@...s.co.il" <baruch@...s.co.il>
CC:     dl-linux-imx <linux-imx@....com>,
        Aisheng Dong <aisheng.dong@....com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Alice Guo <alice.guo@....com>, Peng Fan <peng.fan@....com>
Subject: [PATCH V2] arm: dts: imx7ulp: fix reg of cpu node

From: Peng Fan <peng.fan@....com>

According to arm cpus binding doc,
"
      On 32-bit ARM v7 or later systems this property is
        required and matches the CPU MPIDR[23:0] register
        bits.

        Bits [23:0] in the reg cell must be set to
        bits [23:0] in MPIDR.

        All other bits in the reg cell must be set to 0.
"

In i.MX7ULP, the MPIDR[23:0] is 0xf00, not 0, so fix it.
Otherwise there will be warning:
"DT missing boot CPU MPIDR[23:0], fall back to default cpu_logical_map"

Fixes: 20434dc92c05 ("ARM: dts: imx: add common imx7ulp dtsi support")
Signed-off-by: Peng Fan <peng.fan@....com>
---

V2:
 Fix suffix, from 0 -> f00

 arch/arm/boot/dts/imx7ulp.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/imx7ulp.dtsi b/arch/arm/boot/dts/imx7ulp.dtsi
index d37a1927c88e..ab91c98f2124 100644
--- a/arch/arm/boot/dts/imx7ulp.dtsi
+++ b/arch/arm/boot/dts/imx7ulp.dtsi
@@ -37,10 +37,10 @@
 		#address-cells = <1>;
 		#size-cells = <0>;
 
-		cpu0: cpu@0 {
+		cpu0: cpu@f00 {
 			compatible = "arm,cortex-a7";
 			device_type = "cpu";
-			reg = <0>;
+			reg = <0xf00>;
 		};
 	};
 
-- 
2.16.4