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Message-Id: <20250410-dt-cpu-schema-v2-17-63d7dc9ddd0a@kernel.org>
Date: Thu, 10 Apr 2025 10:47:38 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
Jernej Skrabec <jernej.skrabec@...il.com>,
Samuel Holland <samuel@...lland.org>, Conor Dooley <conor@...nel.org>,
Nicolas Ferre <nicolas.ferre@...rochip.com>,
Claudiu Beznea <claudiu.beznea@...on.dev>,
Steen Hegelund <Steen.Hegelund@...rochip.com>,
Daniel Machon <daniel.machon@...rochip.com>, UNGLinuxDriver@...rochip.com,
Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konradybcio@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
Fabio Estevam <festevam@...il.com>, Heiko Stuebner <heiko@...ech.de>,
Neil Armstrong <neil.armstrong@...aro.org>,
Kevin Hilman <khilman@...libre.com>, Jerome Brunet <jbrunet@...libre.com>,
Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
Geert Uytterhoeven <geert+renesas@...der.be>,
Magnus Damm <magnus.damm@...il.com>,
Lorenzo Pieralisi <lpieralisi@...nel.org>, Andy Gross <agross@...nel.org>,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
Stephen Boyd <sboyd@...nel.org>, zhouyanjie@...yeetech.com,
Matthias Brugger <matthias.bgg@...il.com>,
AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
"Rafael J. Wysocki" <rafael@...nel.org>,
Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
Stephan Gerhold <stephan.gerhold@...aro.org>
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org,
linux-arm-msm@...r.kernel.org, imx@...ts.linux.dev,
linux-rockchip@...ts.infradead.org, linux-amlogic@...ts.infradead.org,
linux-renesas-soc@...r.kernel.org, linux-mips@...r.kernel.org,
linux-pm@...r.kernel.org, linux-mediatek@...ts.infradead.org,
Sudeep Holla <sudeep.holla@....com>, Viresh Kumar <viresh.kumar@...aro.org>
Subject: [PATCH v2 17/17] dt-bindings: cpufreq: Drop redundant Mediatek
binding
The Mediatek CPUFreq binding document just describes properties from
the CPU node which the driver uses. This is redundant as all the
properties are described in the arm/cpus.yaml schema.
Signed-off-by: "Rob Herring (Arm)" <robh@...nel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Reviewed-by: Sudeep Holla <sudeep.holla@....com>
Acked-by: Viresh Kumar <viresh.kumar@...aro.org>
---
.../bindings/cpufreq/cpufreq-mediatek.txt | 250 ---------------------
1 file changed, 250 deletions(-)
diff --git a/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek.txt b/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek.txt
deleted file mode 100644
index e0a4ba599abc..000000000000
--- a/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek.txt
+++ /dev/null
@@ -1,250 +0,0 @@
-Binding for MediaTek's CPUFreq driver
-=====================================
-
-Required properties:
-- clocks: A list of phandle + clock-specifier pairs for the clocks listed in clock names.
-- clock-names: Should contain the following:
- "cpu" - The multiplexer for clock input of CPU cluster.
- "intermediate" - A parent of "cpu" clock which is used as "intermediate" clock
- source (usually MAINPLL) when the original CPU PLL is under
- transition and not stable yet.
- Please refer to Documentation/devicetree/bindings/clock/clock-bindings.txt for
- generic clock consumer properties.
-- operating-points-v2: Please refer to Documentation/devicetree/bindings/opp/opp-v2.yaml
- for detail.
-- proc-supply: Regulator for Vproc of CPU cluster.
-
-Optional properties:
-- sram-supply: Regulator for Vsram of CPU cluster. When present, the cpufreq driver
- needs to do "voltage tracking" to step by step scale up/down Vproc and
- Vsram to fit SoC specific needs. When absent, the voltage scaling
- flow is handled by hardware, hence no software "voltage tracking" is
- needed.
-- mediatek,cci:
- Used to confirm the link status between cpufreq and mediatek cci. Because
- cpufreq and mediatek cci could share the same regulator in some MediaTek SoCs.
- To prevent the issue of high frequency and low voltage, we need to use this
- property to make sure mediatek cci is ready.
- For details of mediatek cci, please refer to
- Documentation/devicetree/bindings/interconnect/mediatek,cci.yaml
-- #cooling-cells:
- For details, please refer to
- Documentation/devicetree/bindings/thermal/thermal-cooling-devices.yaml
-
-Example 1 (MT7623 SoC):
-
- cpu_opp_table: opp_table {
- compatible = "operating-points-v2";
- opp-shared;
-
- opp-598000000 {
- opp-hz = /bits/ 64 <598000000>;
- opp-microvolt = <1050000>;
- };
-
- opp-747500000 {
- opp-hz = /bits/ 64 <747500000>;
- opp-microvolt = <1050000>;
- };
-
- opp-1040000000 {
- opp-hz = /bits/ 64 <1040000000>;
- opp-microvolt = <1150000>;
- };
-
- opp-1196000000 {
- opp-hz = /bits/ 64 <1196000000>;
- opp-microvolt = <1200000>;
- };
-
- opp-1300000000 {
- opp-hz = /bits/ 64 <1300000000>;
- opp-microvolt = <1300000>;
- };
- };
-
- cpu0: cpu@0 {
- device_type = "cpu";
- compatible = "arm,cortex-a7";
- reg = <0x0>;
- clocks = <&infracfg CLK_INFRA_CPUSEL>,
- <&apmixedsys CLK_APMIXED_MAINPLL>;
- clock-names = "cpu", "intermediate";
- operating-points-v2 = <&cpu_opp_table>;
- #cooling-cells = <2>;
- };
- cpu@1 {
- device_type = "cpu";
- compatible = "arm,cortex-a7";
- reg = <0x1>;
- operating-points-v2 = <&cpu_opp_table>;
- };
- cpu@2 {
- device_type = "cpu";
- compatible = "arm,cortex-a7";
- reg = <0x2>;
- operating-points-v2 = <&cpu_opp_table>;
- };
- cpu@3 {
- device_type = "cpu";
- compatible = "arm,cortex-a7";
- reg = <0x3>;
- operating-points-v2 = <&cpu_opp_table>;
- };
-
-Example 2 (MT8173 SoC):
- cpu_opp_table_a: opp_table_a {
- compatible = "operating-points-v2";
- opp-shared;
-
- opp-507000000 {
- opp-hz = /bits/ 64 <507000000>;
- opp-microvolt = <859000>;
- };
-
- opp-702000000 {
- opp-hz = /bits/ 64 <702000000>;
- opp-microvolt = <908000>;
- };
-
- opp-1001000000 {
- opp-hz = /bits/ 64 <1001000000>;
- opp-microvolt = <983000>;
- };
-
- opp-1105000000 {
- opp-hz = /bits/ 64 <1105000000>;
- opp-microvolt = <1009000>;
- };
-
- opp-1183000000 {
- opp-hz = /bits/ 64 <1183000000>;
- opp-microvolt = <1028000>;
- };
-
- opp-1404000000 {
- opp-hz = /bits/ 64 <1404000000>;
- opp-microvolt = <1083000>;
- };
-
- opp-1508000000 {
- opp-hz = /bits/ 64 <1508000000>;
- opp-microvolt = <1109000>;
- };
-
- opp-1573000000 {
- opp-hz = /bits/ 64 <1573000000>;
- opp-microvolt = <1125000>;
- };
- };
-
- cpu_opp_table_b: opp_table_b {
- compatible = "operating-points-v2";
- opp-shared;
-
- opp-507000000 {
- opp-hz = /bits/ 64 <507000000>;
- opp-microvolt = <828000>;
- };
-
- opp-702000000 {
- opp-hz = /bits/ 64 <702000000>;
- opp-microvolt = <867000>;
- };
-
- opp-1001000000 {
- opp-hz = /bits/ 64 <1001000000>;
- opp-microvolt = <927000>;
- };
-
- opp-1209000000 {
- opp-hz = /bits/ 64 <1209000000>;
- opp-microvolt = <968000>;
- };
-
- opp-1404000000 {
- opp-hz = /bits/ 64 <1007000000>;
- opp-microvolt = <1028000>;
- };
-
- opp-1612000000 {
- opp-hz = /bits/ 64 <1612000000>;
- opp-microvolt = <1049000>;
- };
-
- opp-1807000000 {
- opp-hz = /bits/ 64 <1807000000>;
- opp-microvolt = <1089000>;
- };
-
- opp-1989000000 {
- opp-hz = /bits/ 64 <1989000000>;
- opp-microvolt = <1125000>;
- };
- };
-
- cpu0: cpu@0 {
- device_type = "cpu";
- compatible = "arm,cortex-a53";
- reg = <0x000>;
- enable-method = "psci";
- cpu-idle-states = <&CPU_SLEEP_0>;
- clocks = <&infracfg CLK_INFRA_CA53SEL>,
- <&apmixedsys CLK_APMIXED_MAINPLL>;
- clock-names = "cpu", "intermediate";
- operating-points-v2 = <&cpu_opp_table_a>;
- };
-
- cpu1: cpu@1 {
- device_type = "cpu";
- compatible = "arm,cortex-a53";
- reg = <0x001>;
- enable-method = "psci";
- cpu-idle-states = <&CPU_SLEEP_0>;
- clocks = <&infracfg CLK_INFRA_CA53SEL>,
- <&apmixedsys CLK_APMIXED_MAINPLL>;
- clock-names = "cpu", "intermediate";
- operating-points-v2 = <&cpu_opp_table_a>;
- };
-
- cpu2: cpu@100 {
- device_type = "cpu";
- compatible = "arm,cortex-a72";
- reg = <0x100>;
- enable-method = "psci";
- cpu-idle-states = <&CPU_SLEEP_0>;
- clocks = <&infracfg CLK_INFRA_CA72SEL>,
- <&apmixedsys CLK_APMIXED_MAINPLL>;
- clock-names = "cpu", "intermediate";
- operating-points-v2 = <&cpu_opp_table_b>;
- };
-
- cpu3: cpu@101 {
- device_type = "cpu";
- compatible = "arm,cortex-a72";
- reg = <0x101>;
- enable-method = "psci";
- cpu-idle-states = <&CPU_SLEEP_0>;
- clocks = <&infracfg CLK_INFRA_CA72SEL>,
- <&apmixedsys CLK_APMIXED_MAINPLL>;
- clock-names = "cpu", "intermediate";
- operating-points-v2 = <&cpu_opp_table_b>;
- };
-
- &cpu0 {
- proc-supply = <&mt6397_vpca15_reg>;
- };
-
- &cpu1 {
- proc-supply = <&mt6397_vpca15_reg>;
- };
-
- &cpu2 {
- proc-supply = <&da9211_vcpu_reg>;
- sram-supply = <&mt6397_vsramca7_reg>;
- };
-
- &cpu3 {
- proc-supply = <&da9211_vcpu_reg>;
- sram-supply = <&mt6397_vsramca7_reg>;
- };
--
2.47.2
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