[PATCHv4 30/35] ARM: dts: omap4: add system control module node
Tero Kristo
t-kristo at ti.com
Wed Mar 18 07:44:15 PDT 2015
Add node for system control module, and move all the existing system
control IO space users under this new node as its children. A new node
for scm_conf area is also added. DT documentation is also updated by
this patch to reflect the existence of system control module nodes,
separately of PRCM module.
Signed-off-by: Tero Kristo <t-kristo at ti.com>
---
.../devicetree/bindings/arm/omap/ctrl.txt | 77 +++++++++++++++++++
.../devicetree/bindings/arm/omap/prcm.txt | 7 --
arch/arm/boot/dts/omap4.dtsi | 81 +++++++++++++-------
3 files changed, 132 insertions(+), 33 deletions(-)
create mode 100644 Documentation/devicetree/bindings/arm/omap/ctrl.txt
diff --git a/Documentation/devicetree/bindings/arm/omap/ctrl.txt b/Documentation/devicetree/bindings/arm/omap/ctrl.txt
new file mode 100644
index 0000000..8f2b481
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/omap/ctrl.txt
@@ -0,0 +1,77 @@
+OMAP Control Module bindings
+
+Control Module contains miscellaneous features under it based on SoC type.
+Pincontrol is one common feature, and it has a specialized support
+described in [1]. Typically some clock nodes are also under control module.
+Syscon is used to share register level access to drivers external to
+control module driver itself.
+
+See [2] for documentation about clock/clockdomain nodes.
+
+[1] Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt
+[2] Documentation/devicetree/bindings/clock/ti/*
+
+Required properties:
+- compatible: Must be one of:
+ "ti,am3-scrm"
+ "ti,am4-scrm"
+ "ti,dm814-scrm"
+ "ti,dm816-scrm"
+ "ti,omap2-scrm"
+ "ti,omap3-scrm"
+ "ti,omap3-scrm-wkup"
+ "ti,omap4-ctrl"
+ "ti,omap4-ctrl-wkup"
+- reg: Contains Control Module register address range
+ (base address and length)
+
+Optional properties:
+- clocks: clocks for this module
+- clockdomains: clockdomains for this module
+
+Examples:
+
+scrm: scrm at 48002000 {
+ compatible = "ti,omap3-scrm", "simple-bus";
+ reg = <0x48002000 0x2000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0 0x48002000 0x2000>;
+
+ omap3_pmx_core: pinmux at 30 {
+ compatible = "ti,omap3-padconf",
+ "pinctrl-single";
+ reg = <0x30 0x230>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ pinctrl-single,register-width = <16>;
+ pinctrl-single,function-mask = <0xff1f>;
+ };
+
+ scm_conf: scm_conf at 270 {
+ compatible = "syscon";
+ reg = <0x270 0x330>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ scrm_clocks: clocks {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+ };
+
+ scrm_clockdomains: clockdomains {
+ };
+}
+
+&scrm_clocks {
+ mcbsp5_mux_fck: mcbsp5_mux_fck {
+ #clock-cells = <0>;
+ compatible = "ti,composite-mux-clock";
+ clocks = <&core_96m_fck>, <&mcbsp_clks>;
+ ti,bit-shift = <4>;
+ reg = <0x02d8>;
+ };
+};
diff --git a/Documentation/devicetree/bindings/arm/omap/prcm.txt b/Documentation/devicetree/bindings/arm/omap/prcm.txt
index 98ab498..3eb6d7a 100644
--- a/Documentation/devicetree/bindings/arm/omap/prcm.txt
+++ b/Documentation/devicetree/bindings/arm/omap/prcm.txt
@@ -10,15 +10,10 @@ documentation about the individual clock/clockdomain nodes.
Required properties:
- compatible: Must be one of:
"ti,am3-prcm"
- "ti,am3-scrm"
"ti,am4-prcm"
- "ti,am4-scrm"
"ti,omap2-prcm"
- "ti,omap2-scrm"
"ti,omap3-prm"
"ti,omap3-cm"
- "ti,omap3-scrm"
- "ti,omap3-scrm-wkup"
"ti,omap4-cm1"
"ti,omap4-prm"
"ti,omap4-cm2"
@@ -31,9 +26,7 @@ Required properties:
"ti,dra7-cm-core-aon"
"ti,dra7-cm-core"
"ti,dm814-prcm"
- "ti,dm814-scrm"
"ti,dm816-prcm"
- "ti,dm816-scrm"
- reg: Contains PRCM module register address range
(base address and length)
- clocks: clocks for this module
diff --git a/arch/arm/boot/dts/omap4.dtsi b/arch/arm/boot/dts/omap4.dtsi
index 074147c..dec7f57 100644
--- a/arch/arm/boot/dts/omap4.dtsi
+++ b/arch/arm/boot/dts/omap4.dtsi
@@ -167,36 +167,65 @@
};
};
- counter32k: counter at 4a304000 {
- compatible = "ti,omap-counter32k";
- reg = <0x4a304000 0x20>;
- ti,hwmods = "counter_32k";
- };
+ scm: scm at 4a002000 {
+ compatible = "ti,omap4-ctrl", "simple-bus";
+ reg = <0x4a002000 0x1000>,
+ <0x4a100000 0x1000>;
+ #address-cells = <2>;
+ #size-cells = <1>;
+ ranges = <0 0 0x4a002000 0x1000>,
+ <1 0 0x4a100000 0x1000>;
- omap4_pmx_core: pinmux at 4a100040 {
- compatible = "ti,omap4-padconf", "pinctrl-single";
- reg = <0x4a100040 0x0196>;
- #address-cells = <1>;
- #size-cells = <0>;
- #interrupt-cells = <1>;
- interrupt-controller;
- pinctrl-single,register-width = <16>;
- pinctrl-single,function-mask = <0x7fff>;
+ scm_conf: scm_conf at 0,0 {
+ compatible = "syscon";
+ reg = <0 0x0 0x800>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ };
+
+ omap4_pmx_core: pinmux at 1,40 {
+ compatible = "ti,omap4-padconf",
+ "pinctrl-single";
+ reg = <1 0x40 0x0196>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ pinctrl-single,register-width = <16>;
+ pinctrl-single,function-mask = <0x7fff>;
+ };
+
+ omap4_padconf_global: omap4_padconf_global at 1,5a0 {
+ compatible = "syscon";
+ reg = <1 0x5a0 0x170>;
+ };
};
- omap4_pmx_wkup: pinmux at 4a31e040 {
- compatible = "ti,omap4-padconf", "pinctrl-single";
- reg = <0x4a31e040 0x0038>;
- #address-cells = <1>;
- #size-cells = <0>;
- #interrupt-cells = <1>;
- interrupt-controller;
- pinctrl-single,register-width = <16>;
- pinctrl-single,function-mask = <0x7fff>;
+
+ scm_wkup: scm_wkup at 4a30a000 {
+ compatible = "ti,omap4-ctrl-wkup", "simple-bus";
+ reg = <0x4a30a000 0x1000>, <0x4a31e000 0x1000>;
+ #address-cells = <2>;
+ #size-cells = <1>;
+ ranges = <0 0 0x4a30a000 0x1000>,
+ <1 0 0x4a31e000 0x1000>;
+
+ omap4_pmx_wkup: pinmux at 1,40 {
+ compatible = "ti,omap4-padconf",
+ "pinctrl-single";
+ reg = <1 0x40 0x0038>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ pinctrl-single,register-width = <16>;
+ pinctrl-single,function-mask = <0x7fff>;
+ };
};
- omap4_padconf_global: tisyscon at 4a1005a0 {
- compatible = "syscon";
- reg = <0x4a1005a0 0x170>;
+ counter32k: counter at 4a304000 {
+ compatible = "ti,omap-counter32k";
+ reg = <0x4a304000 0x20>;
+ ti,hwmods = "counter_32k";
};
pbias_regulator: pbias_regulator {
--
1.7.9.5
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