From: Leonard Crestez <leonard.crestez@nxp.com>
To: Viresh Kumar <viresh.kumar@linaro.org>,
Lucas Stach <l.stach@pengutronix.de>,
Shawn Guo <shawnguo@kernel.org>
Cc: Aisheng Dong <aisheng.dong@nxp.com>, Jacky Bai <ping.bai@nxp.com>,
Anson Huang <anson.huang@nxp.com>,
"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
dl-linux-imx <linux-imx@nxp.com>,
"kernel@pengutronix.de" <kernel@pengutronix.de>,
Fabio Estevam <fabio.estevam@nxp.com>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
Abel Vesa <abel.vesa@nxp.com>
Subject: [PATCH v2 2/3] arm64: dts: imx8mm: Add cpu speed grading and all OPPs
Date: Thu, 2 May 2019 22:44:15 +0000 [thread overview]
Message-ID: <cb0329b83347e551911f3d474cf512f3fe10cde4.1556836868.git.leonard.crestez@nxp.com> (raw)
In-Reply-To: <cover.1556836868.git.leonard.crestez@nxp.com>
Add a nvmem cell on cpu node referencing speed grade and the 1.8 Ghz
cpufreq opp.
The imx-cpufreq-dt driver will read speed grade and disable higher opps
if unsupported.
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
---
arch/arm64/boot/dts/freescale/imx8mm.dtsi | 23 ++++++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
index 0b2a585c5844..9154f48e81f4 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
@@ -51,10 +51,12 @@
clock-latency = <61036>; /* two CLK32 periods */
clocks = <&clk IMX8MM_CLK_ARM>;
enable-method = "psci";
next-level-cache = <&A53_L2>;
operating-points-v2 = <&a53_opp_table>;
+ nvmem-cells = <&cpu_speed_grade>;
+ nvmem-cell-names = "speed_grade";
};
A53_1: cpu@1 {
device_type = "cpu";
compatible = "arm,cortex-a53";
@@ -95,21 +97,36 @@
a53_opp_table: opp-table {
compatible = "operating-points-v2";
opp-shared;
+ opp-800000000 {
+ opp-hz = /bits/ 64 <800000000>;
+ opp-microvolt = <850000>;
+ opp-supported-hw = <0xf>;
+ clock-latency-ns = <150000>;
+ };
+
opp-1200000000 {
opp-hz = /bits/ 64 <1200000000>;
opp-microvolt = <850000>;
+ opp-supported-hw = <0xe>;
clock-latency-ns = <150000>;
};
opp-1600000000 {
opp-hz = /bits/ 64 <1600000000>;
opp-microvolt = <900000>;
+ opp-supported-hw = <0xc>;
+ clock-latency-ns = <150000>;
+ };
+
+ opp-1800000000 {
+ opp-hz = /bits/ 64 <1800000000>;
+ opp-microvolt = <1000000>;
+ opp-supported-hw = <0x8>;
clock-latency-ns = <150000>;
- opp-suspend;
};
};
memory@40000000 {
device_type = "memory";
@@ -317,10 +334,14 @@
reg = <0x30350000 0x10000>;
clocks = <&clk IMX8MM_CLK_OCOTP_ROOT>;
/* For nvmem subnodes */
#address-cells = <1>;
#size-cells = <1>;
+
+ cpu_speed_grade: speed-grade@10 {
+ reg = <0x10 4>;
+ };
};
anatop: anatop@30360000 {
compatible = "fsl,imx8mm-anatop", "syscon", "simple-bus";
reg = <0x30360000 0x10000>;
--
2.17.1
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next prev parent reply other threads:[~2019-05-02 22:44 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-02 22:44 [PATCH v2 0/3] cpufreq: Add imx-cpufreq-dt driver Leonard Crestez
2019-05-02 22:44 ` [PATCH v2 1/3] " Leonard Crestez
2019-05-03 6:52 ` Viresh Kumar
2019-05-03 9:44 ` Leonard Crestez
2019-05-03 9:53 ` Viresh Kumar
2019-05-02 22:44 ` Leonard Crestez [this message]
2019-05-03 6:52 ` [PATCH v2 2/3] arm64: dts: imx8mm: Add cpu speed grading and all OPPs Viresh Kumar
2019-05-02 22:44 ` [PATCH v2 3/3] arm64: dts: imx8mq: " Leonard Crestez
2019-05-03 6:53 ` Viresh Kumar
2019-05-03 6:50 ` [PATCH v2 0/3] cpufreq: Add imx-cpufreq-dt driver Viresh Kumar
2019-05-03 11:51 ` Leonard Crestez
2019-05-07 5:35 ` Viresh Kumar
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