[PATCH 4.19 63/84] ARM: dts: imx6ul: use nvmem-cells for cpu speed grading

[Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>]

From: Anson Huang <Anson.Huang@xxxxxxx>

commit 92f0eb08c66a73594cf200e65689e767f7f0da5e upstream.

On i.MX6UL, accessing OCOTP directly is wrong because the ocotp clock
needs to be enabled first, so use the nvmem-cells binding instead.

Signed-off-by: Anson Huang <Anson.Huang@xxxxxxx>
Signed-off-by: Shawn Guo <shawnguo@xxxxxxxxxx>
Cc: Sébastien Szymanski <sebastien.szymanski@xxxxxxxxxxxx>
Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 arch/arm/boot/dts/imx6ul.dtsi |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/arch/arm/boot/dts/imx6ul.dtsi
+++ b/arch/arm/boot/dts/imx6ul.dtsi
@@ -87,6 +87,8 @@
 				      "pll1_sys";
 			arm-supply = <&reg_arm>;
 			soc-supply = <&reg_soc>;
+			nvmem-cells = <&cpu_speed_grade>;
+			nvmem-cell-names = "speed_grade";
 		};
 	};
 
@@ -930,6 +932,10 @@
 				tempmon_temp_grade: temp-grade@20 {
 					reg = <0x20 4>;
 				};
+
+				cpu_speed_grade: speed-grade@10 {
+					reg = <0x10 4>;
+				};
 			};
 
 			lcdif: lcdif@21c8000 {