linux-kernel - [PATCH 5.4 019/222] ARM: dts: imx7ulp: fix reg of cpu node

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Date:   Wed, 22 Jan 2020 10:26:45 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Peng Fan <peng.fan@....com>,
        Fabio Estevam <festevam@...il.com>,
        Shawn Guo <shawnguo@...nel.org>
Subject: [PATCH 5.4 019/222] ARM: dts: imx7ulp: fix reg of cpu node

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

commit b8ab62ff7199fac8ce27fa4a149929034fabe7f8 upstream.

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>
Reviewed-by: Fabio Estevam <festevam@...il.com>
Signed-off-by: Shawn Guo <shawnguo@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

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

--- 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>;
 		};
 	};