ARM: dts: omap4: add minimal l4 bus layout with control module support

This patch creates the l4_cfg and l4_wkup interconnects for OMAP4, and
moves some of the generic peripherals under it. System control module
support is added to the device tree also, and the existing SCM related
functionality is moved under it.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Reported-by: Tony Lindgren <tony@atomide.com>

3 files changed, 78 insertions, 6 deletions

diff --git a/Documentation/devicetree/bindings/arm/omap/ctrl.txt b/Documentation/devicetree/bindings/arm/omap/ctrl.txt
new file mode 100644
index 000000000000..26758812ae17
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/omap/ctrl.txt
@@ -0,0 +1,76 @@
+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-scm"
+                "ti,am4-scm"
+                "ti,dm814-scrm"
+                "ti,dm816-scrm"
+                "ti,omap2-scm"
+                "ti,omap3-scm"
+                "ti,omap4-scm-core"
+                "ti,omap4-scm-padconf-core"
+- reg:          Contains Control Module register address range
+                (base address and length)
+
+Optional properties:
+- clocks:       clocks for this module
+- clockdomains: clockdomains for this module
+
+Examples:
+
+scm: scm@2000 {
+        compatible = "ti,omap3-scm", "simple-bus";
+        reg = <0x2000 0x2000>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges = <0 0x2000 0x2000>;
+
+        omap3_pmx_core: pinmux@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@270 {
+                compatible = "syscon";
+                reg = <0x270 0x330>;
+                #address-cells = <1>;
+                #size-cells = <1>;
+
+                scm_clocks: clocks {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                };
+        };
+
+        scm_clockdomains: clockdomains {
+        };
+}
+
+&scm_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/l4.txt b/Documentation/devicetree/bindings/arm/omap/l4.txt
index 941b914eb8cf..de18cfaf9f68 100644
--- a/Documentation/devicetree/bindings/arm/omap/l4.txt
+++ b/Documentation/devicetree/bindings/arm/omap/l4.txt
@@ -6,6 +6,8 @@ Required properties:
 - compatible : Should be "ti,omap2-l4" for OMAP2 family l4 core bus
                Should be "ti,omap2-l4-wkup" for OMAP2 family l4 wkup bus
                Should be "ti,omap3-l4-core" for OMAP3 family l4 core bus
+               Should be "ti,omap4-l4-cfg" for OMAP4 family l4 cfg bus
+               Should be "ti,omap4-l4-wkup" for OMAP4 family l4 wkup bus
                Should be "ti,am3-l4-wkup" for AM33xx family l4 wkup bus
                Should be "ti,am4-l4-wkup" for AM43xx family l4 wkup bus
 - ranges : contains the IO map range for the bus
diff --git a/Documentation/devicetree/bindings/arm/omap/prcm.txt b/Documentation/devicetree/bindings/arm/omap/prcm.txt
index 8af4f325ee23..3eb6d7afff14 100644
--- a/Documentation/devicetree/bindings/arm/omap/prcm.txt
+++ b/Documentation/devicetree/bindings/arm/omap/prcm.txt
@@ -10,14 +10,10 @@ documentation about the individual clock/clockdomain nodes.
 Required properties:
 - compatible:   Must be one of:
                 "ti,am3-prcm"
-                "ti,am3-scm"
                 "ti,am4-prcm"
-                "ti,am4-scm"
                 "ti,omap2-prcm"
-                "ti,omap2-scm"
                 "ti,omap3-prm"
                 "ti,omap3-cm"
-                "ti,omap3-scm"
                 "ti,omap4-cm1"
                 "ti,omap4-prm"
                 "ti,omap4-cm2"
@@ -30,9 +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