ARM: dts: dra7: Move to operating-points-v2 table (f80bc97f) · Commits · 戴 / test

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>

arch/arm/boot/dts/dra7.dtsi

+21 −5

Original line number	Diff line number	Diff line
		@@ -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.

arch/arm/boot/dts/dra74x.dtsi

+1 −0

Original line number	Diff line number	Diff line
		@@ -17,6 +17,7 @@
		device_type = "cpu";
		compatible = "arm,cortex-a15";
		reg = <1>;
		operating-points-v2 = <&cpu0_opp_table>;
		};
		};

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