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Message-Id: <647c83c40a8afd530464a6f7d74634738311399f.1567587220.git.hns@goldelico.com>
Date: Wed, 4 Sep 2019 10:53:40 +0200
From: "H. Nikolaus Schaller" <hns@...delico.com>
To: Benoît Cousson <bcousson@...libre.com>,
Tony Lindgren <tony@...mide.com>,
Rob Herring <robh+dt@...nel.org>,
Adam Ford <aford173@...il.com>,
André Roth <neolynx@...il.com>,
Mark Rutland <mark.rutland@....com>,
"Rafael J. Wysocki" <rjw@...ysocki.net>,
Viresh Kumar <viresh.kumar@...aro.org>
Cc: linux-omap@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
letux-kernel@...nphoenux.org, kernel@...a-handheld.com,
"H. Nikolaus Schaller" <hns@...delico.com>
Subject: [RFC v2 2/3] ARM: dts: replace opp-v1 tables by opp-v2 for omap34xx and omap36xx
In addition, move omap3 from whitelist to blacklist in cpufreq-dt-platdev
in the same patch, because doing either first breaks operation and
may make trouble in bisect.
We also can remove opp-v1 table for omap3-n950-n9 since it is now
automatically detected.
Signed-off-by: H. Nikolaus Schaller <hns@...delico.com>
---
arch/arm/boot/dts/omap3-n950-n9.dtsi | 7 ---
arch/arm/boot/dts/omap34xx.dtsi | 65 ++++++++++++++++++++++++----
arch/arm/boot/dts/omap36xx.dtsi | 53 +++++++++++++++++++----
drivers/cpufreq/cpufreq-dt-platdev.c | 2 +-
4 files changed, 102 insertions(+), 25 deletions(-)
diff --git a/arch/arm/boot/dts/omap3-n950-n9.dtsi b/arch/arm/boot/dts/omap3-n950-n9.dtsi
index 5441e9ffdbb4..e98b0c615f19 100644
--- a/arch/arm/boot/dts/omap3-n950-n9.dtsi
+++ b/arch/arm/boot/dts/omap3-n950-n9.dtsi
@@ -11,13 +11,6 @@
cpus {
cpu@0 {
cpu0-supply = <&vcc>;
- operating-points = <
- /* kHz uV */
- 300000 1012500
- 600000 1200000
- 800000 1325000
- 1000000 1375000
- >;
};
};
diff --git a/arch/arm/boot/dts/omap34xx.dtsi b/arch/arm/boot/dts/omap34xx.dtsi
index f572a477f74c..6408a0448834 100644
--- a/arch/arm/boot/dts/omap34xx.dtsi
+++ b/arch/arm/boot/dts/omap34xx.dtsi
@@ -16,19 +16,66 @@
/ {
cpus {
cpu: cpu@0 {
- /* OMAP343x/OMAP35xx variants OPP1-5 */
- operating-points = <
- /* kHz uV */
- 125000 975000
- 250000 1075000
- 500000 1200000
- 550000 1270000
- 600000 1350000
- >;
+ /* OMAP343x/OMAP35xx variants OPP1-6 */
+ operating-points-v2 = <&cpu0_opp_table>;
+
clock-latency = <300000>; /* From legacy driver */
};
};
+ /* see Documentation/devicetree/bindings/opp/opp.txt */
+ cpu0_opp_table: opp-table {
+ compatible = "operating-points-v2-ti-cpu";
+ syscon = <&scm_conf>;
+
+ opp1-125000000 {
+ opp-hz = /bits/ 64 <125000000>;
+ /*
+ * we currently only select the max voltage from table
+ * Table 3-3 of the omap3530 Data sheet (SPRS507F).
+ * Format is: <target min max>
+ */
+ opp-microvolt = <975000 975000 975000>;
+ /*
+ * first value is silicon revision bit mask
+ * second one 720MHz Device Identification bit mask
+ */
+ opp-supported-hw = <0xffffffff 3>;
+ };
+
+ opp2-250000000 {
+ opp-hz = /bits/ 64 <250000000>;
+ opp-microvolt = <1075000 1075000 1075000>;
+ opp-supported-hw = <0xffffffff 3>;
+ opp-suspend;
+ };
+
+ opp3-500000000 {
+ opp-hz = /bits/ 64 <500000000>;
+ opp-microvolt = <1200000 1200000 1200000>;
+ opp-supported-hw = <0xffffffff 3>;
+ };
+
+ opp4-550000000 {
+ opp-hz = /bits/ 64 <550000000>;
+ opp-microvolt = <1270000 1270000 1270000>;
+ opp-supported-hw = <0xffffffff 3>;
+ };
+
+ opp5-600000000 {
+ opp-hz = /bits/ 64 <600000000>;
+ opp-microvolt = <1350000 1350000 1350000>;
+ opp-supported-hw = <0xffffffff 3>;
+ };
+
+ opp6-720000000 {
+ opp-hz = /bits/ 64 <720000000>;
+ opp-microvolt = <1350000 1350000 1350000>;
+ /* only high-speed grade omap3530 devices */
+ opp-supported-hw = <0xffffffff 2>;
+ };
+ };
+
ocp@...00000 {
omap3_pmx_core2: pinmux@...025d8 {
compatible = "ti,omap3-padconf", "pinctrl-single";
diff --git a/arch/arm/boot/dts/omap36xx.dtsi b/arch/arm/boot/dts/omap36xx.dtsi
index 6fb23ada1f64..44f25b0eb45b 100644
--- a/arch/arm/boot/dts/omap36xx.dtsi
+++ b/arch/arm/boot/dts/omap36xx.dtsi
@@ -19,15 +19,52 @@
};
cpus {
- /* OMAP3630/OMAP37xx 'standard device' variants OPP50 to OPP130 */
+ /* OMAP3630/OMAP37xx variants OPP50 to OPP130 and OPP1G */
cpu: cpu@0 {
- operating-points = <
- /* kHz uV */
- 300000 1012500
- 600000 1200000
- 800000 1325000
- >;
- clock-latency = <300000>; /* From legacy driver */
+ operating-points-v2 = <&cpu0_opp_table>;
+
+ clock-latency = <300000>; /* From omap-cpufreq driver */
+ };
+ };
+
+ /* see Documentation/devicetree/bindings/opp/opp.txt */
+ cpu0_opp_table: opp-table {
+ compatible = "operating-points-v2-ti-cpu";
+ syscon = <&scm_conf>;
+
+ opp50-300000000 {
+ opp-hz = /bits/ 64 <300000000>;
+ /*
+ * we currently only select the max voltage from table
+ * Table 4-19 of the DM3730 Data sheet (SPRS685B)
+ * Format is: <target min max>
+ */
+ opp-microvolt = <1012500 1012500 1012500>;
+ /*
+ * first value is silicon revision bit mask
+ * second one is "speed binned" bit mask
+ */
+ opp-supported-hw = <0xffffffff 3>;
+ opp-suspend;
+ };
+
+ opp100-600000000 {
+ opp-hz = /bits/ 64 <600000000>;
+ opp-microvolt = <1200000 1200000 1200000>;
+ opp-supported-hw = <0xffffffff 3>;
+ };
+
+ opp130-800000000 {
+ opp-hz = /bits/ 64 <800000000>;
+ opp-microvolt = <1325000 1325000 1325000>;
+ opp-supported-hw = <0xffffffff 3>;
+ };
+
+ opp1g-1000000000 {
+ opp-hz = /bits/ 64 <1000000000>;
+ opp-microvolt = <1375000 1375000 1375000>;
+ /* only on am/dm37x with speed-binned bit set */
+ opp-supported-hw = <0xffffffff 2>;
};
};
diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c
index 03dc4244ab00..68b7fc4225f8 100644
--- a/drivers/cpufreq/cpufreq-dt-platdev.c
+++ b/drivers/cpufreq/cpufreq-dt-platdev.c
@@ -86,7 +86,6 @@ static const struct of_device_id whitelist[] __initconst = {
{ .compatible = "st-ericsson,u9540", },
{ .compatible = "ti,omap2", },
- { .compatible = "ti,omap3", },
{ .compatible = "ti,omap4", },
{ .compatible = "ti,omap5", },
@@ -132,6 +131,7 @@ static const struct of_device_id blacklist[] __initconst = {
{ .compatible = "ti,am33xx", },
{ .compatible = "ti,am43", },
{ .compatible = "ti,dra7", },
+ { .compatible = "ti,omap3", },
{ }
};
--
2.19.1
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