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-rw-r--r--Documentation/devicetree/bindings/clock/renesas,rcar-gen2-cpg-clocks.txt26
-rw-r--r--drivers/clk/shmobile/clk-rcar-gen2.c2
2 files changed, 26 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/clock/renesas,rcar-gen2-cpg-clocks.txt b/Documentation/devicetree/bindings/clock/renesas,rcar-gen2-cpg-clocks.txt
index 56f111bd3e45..2a9a8edc8f35 100644
--- a/Documentation/devicetree/bindings/clock/renesas,rcar-gen2-cpg-clocks.txt
+++ b/Documentation/devicetree/bindings/clock/renesas,rcar-gen2-cpg-clocks.txt
@@ -2,6 +2,8 @@
The CPG generates core clocks for the R-Car Gen2 SoCs. It includes three PLLs
and several fixed ratio dividers.
+The CPG also provides a Clock Domain for SoC devices, in combination with the
+CPG Module Stop (MSTP) Clocks.
Required Properties:
@@ -20,10 +22,18 @@ Required Properties:
- clock-output-names: The names of the clocks. Supported clocks are "main",
"pll0", "pll1", "pll3", "lb", "qspi", "sdh", "sd0", "sd1", "z", "rcan", and
"adsp"
+ - #power-domain-cells: Must be 0
+SoC devices that are part of the CPG/MSTP Clock Domain and can be power-managed
+through an MSTP clock should refer to the CPG device node in their
+"power-domains" property, as documented by the generic PM domain bindings in
+Documentation/devicetree/bindings/power/power_domain.txt.
-Example
--------
+
+Examples
+--------
+
+ - CPG device node:
cpg_clocks: cpg_clocks@e6150000 {
compatible = "renesas,r8a7790-cpg-clocks",
@@ -34,4 +44,16 @@ Example
clock-output-names = "main", "pll0, "pll1", "pll3",
"lb", "qspi", "sdh", "sd0", "sd1", "z",
"rcan", "adsp";
+ #power-domain-cells = <0>;
+ };
+
+
+ - CPG/MSTP Clock Domain member device node:
+
+ thermal@e61f0000 {
+ compatible = "renesas,thermal-r8a7790", "renesas,rcar-thermal";
+ reg = <0 0xe61f0000 0 0x14>, <0 0xe61f0100 0 0x38>;
+ interrupts = <0 69 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&mstp5_clks R8A7790_CLK_THERMAL>;
+ power-domains = <&cpg_clocks>;
};
diff --git a/drivers/clk/shmobile/clk-rcar-gen2.c b/drivers/clk/shmobile/clk-rcar-gen2.c
index acfb6d7dbd6b..f2c457f494eb 100644
--- a/drivers/clk/shmobile/clk-rcar-gen2.c
+++ b/drivers/clk/shmobile/clk-rcar-gen2.c
@@ -415,6 +415,8 @@ static void __init rcar_gen2_cpg_clocks_init(struct device_node *np)
}
of_clk_add_provider(np, of_clk_src_onecell_get, &cpg->data);
+
+ cpg_mstp_add_clk_domain(np);
}
CLK_OF_DECLARE(rcar_gen2_cpg_clks, "renesas,rcar-gen2-cpg-clocks",
rcar_gen2_cpg_clocks_init);