[PATCH 1/3] ARM: dts: imx7d: Update cpufreq OPP table

* [PATCH 1/3] ARM: dts: imx7d: Update cpufreq OPP table
@ 2019-05-29 12:03 Leonard Crestez
  2019-05-29 12:03 ` [PATCH 2/3] ARM: imx_v6_v7_defconfig: Enable CONFIG_ARM_IMX_CPUFREQ_DT Leonard Crestez
  2019-05-29 12:03 ` [PATCH 3/3] cpufreq: Switch imx7d to imx-cpufreq-dt for speed grading Leonard Crestez
  0 siblings, 2 replies; 6+ messages in thread
From: Leonard Crestez @ 2019-05-29 12:03 UTC (permalink / raw)
  To: Viresh Kumar, Shawn Guo, Jacky Bai
  Cc: Aisheng Dong, Abel Vesa, Anson Huang, linux-pm,
	Rafael J. Wysocki, dl-linux-imx, kernel, Fabio Estevam,
	linux-arm-kernel

According to latest docs imx7d chips can go from 800 to 1200 mhz.
Maximum frequency is determined from two speed grading bits present in
OCOTP fuses at same location as other imx chips.

Also update to "typical" voltages from latest datasheet, 25mv higher
than current dts.

All imx7s parts are still fixed at 800mhz

Based on:
* IMX7DCEC Rev. 6, 03/2019
* IMX7SCEC Rev. 6, 03/2019
* IMX7DRM Rev. 1, 01/2018 Page 1102

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
---
 arch/arm/boot/dts/imx7d.dtsi | 16 +++++++++++++---
 arch/arm/boot/dts/imx7s.dtsi |  4 ++++
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/imx7d.dtsi b/arch/arm/boot/dts/imx7d.dtsi
index f33b560821b8..42528d2812a2 100644
--- a/arch/arm/boot/dts/imx7d.dtsi
+++ b/arch/arm/boot/dts/imx7d.dtsi
@@ -10,10 +10,12 @@
 	cpus {
 		cpu0: cpu@0 {
 			clock-frequency = <996000000>;
 			operating-points-v2 = <&cpu0_opp_table>;
 			#cooling-cells = <2>;
+			nvmem-cells = <&cpu_speed_grade>;
+			nvmem-cell-names = "speed_grade";
 		};
 
 		cpu1: cpu@1 {
 			compatible = "arm,cortex-a7";
 			device_type = "cpu";
@@ -37,19 +39,27 @@
 		compatible = "operating-points-v2";
 		opp-shared;
 
 		opp-792000000 {
 			opp-hz = /bits/ 64 <792000000>;
-			opp-microvolt = <975000>;
+			opp-microvolt = <1000000>;
 			clock-latency-ns = <150000>;
+			opp-supported-hw = <0xf>, <0xf>;
 		};
 
 		opp-996000000 {
 			opp-hz = /bits/ 64 <996000000>;
-			opp-microvolt = <1075000>;
+			opp-microvolt = <1100000>;
 			clock-latency-ns = <150000>;
-			opp-suspend;
+			opp-supported-hw = <0xc>, <0xf>;
+		};
+
+		opp-1200000000 {
+			opp-hz = /bits/ 64 <1200000000>;
+			opp-microvolt = <1225000>;
+			clock-latency-ns = <150000>;
+			opp-supported-hw = <0x8>, <0xf>;
 		};
 	};
 
 	usbphynop2: usbphynop2 {
 		compatible = "usb-nop-xceiv";
diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi
index d8b4eb67146d..5b8292670b4b 100644
--- a/arch/arm/boot/dts/imx7s.dtsi
+++ b/arch/arm/boot/dts/imx7s.dtsi
@@ -549,10 +549,14 @@
 				};
 
 				tempmon_temp_grade: temp-grade@10 {
 					reg = <0x10 0x4>;
 				};
+
+				cpu_speed_grade: speed-grade@10 {
+					reg = <0x10 0x4>;
+				};
 			};
 
 			anatop: anatop@30360000 {
 				compatible = "fsl,imx7d-anatop", "fsl,imx6q-anatop",
 					"syscon", "simple-bus";
-- 
2.17.1


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