ARM: dts: dra7: Move to operating-points-v2 table

Add an operating-points-v2 table with all OPPs available for all silicon
revisions along with necessary data for use by ti-opp driver to selectively
enable the appropriate OPPs at runtime and handle voltage transitions

As we now need to define voltage ranges for each OPP, we define the
minimum and maximum voltage to match the ranges possible for AVS class0
voltage as defined by the DRA7/AM57 Data Manual, with the exception of
using a range for OPP_OD based on historical data to ensure that SoCs
from older lots still continue to boot, even though more optimal voltages
are now the standard. Once an AVS Class0 driver is in place it will be
possible for these OPP voltages to be adjusted to any voltage within the
provided range.

Information from SPRS953, Revised December 2015.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
index b1e9f5c0fb79123dd1e117260eacaea6c700825f..c3e67eeee8e0a6ec01fe0b13d3b8635c5d322394 100644 (file)
--- a/arch/arm/boot/dts/dra7.dtsi
+++ b/arch/arm/boot/dts/dra7.dtsi
@@ -82,11 +82,9 @@
                        compatible = "arm,cortex-a15";
                        reg = <0>;
 
-                       operating-points = <
-                               /* kHz    uV */
-                               1000000 1060000
-                               1176000 1160000
-                               >;
+                       operating-points-v2 = <&cpu0_opp_table>;
+                       ti,syscon-efuse = <&scm_wkup 0x20c 0xf80000 19>;
+                       ti,syscon-rev = <&scm_wkup 0x204>;
 
                        clocks = <&dpll_mpu_ck>;
                        clock-names = "cpu";
@@ -100,6 +98,24 @@
                };
        };
 
+       cpu0_opp_table: opp_table0 {
+               compatible = "operating-points-v2";
+               opp-shared;
+
+               opp_nom@1000000000 {
+                       opp-hz = /bits/ 64 <1000000000>;
+                       opp-microvolt = <1060000 850000 1150000>;
+                       opp-supported-hw = <0xFF 0x01>;
+                       opp-suspend;
+               };
+
+               opp_od@1176000000 {
+                       opp-hz = /bits/ 64 <1176000000>;
+                       opp-microvolt = <1160000 885000 1160000>;
+                       opp-supported-hw = <0xFF 0x02>;
+               };
+       };
+
        /*
         * The soc node represents the soc top level view. It is used for IPs
         * that are not memory mapped in the MPU view or for the MPU itself.

diff --git a/arch/arm/boot/dts/dra74x.dtsi b/arch/arm/boot/dts/dra74x.dtsi
index 0c31db3a8919f8ab1be178fff22a888e28f307af..0a8a5eee5dd003d1f5d74ee5827cb8b65b7a924f 100644 (file)
--- a/arch/arm/boot/dts/dra74x.dtsi
+++ b/arch/arm/boot/dts/dra74x.dtsi
@@ -17,6 +17,7 @@
                        device_type = "cpu";
                        compatible = "arm,cortex-a15";
                        reg = <1>;
+                       operating-points-v2 = <&cpu0_opp_table>;
                };
        };