From e4b08e1f3e86a5acda93fc7adb014840af7248bb Mon Sep 17 00:00:00 2001 From: Michel Pollet Date: Thu, 14 Jun 2018 11:56:31 +0100 Subject: dt-bindings: clock: renesas,r9a06g032-sysctrl: documentation The Renesas R9A06G032 SYSCTRL node description. Signed-off-by: Michel Pollet Reviewed-by: Rob Herring Signed-off-by: Geert Uytterhoeven --- .../bindings/clock/renesas,r9a06g032-sysctrl.txt | 43 ++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/renesas,r9a06g032-sysctrl.txt (limited to 'Documentation/devicetree/bindings/clock') diff --git a/Documentation/devicetree/bindings/clock/renesas,r9a06g032-sysctrl.txt b/Documentation/devicetree/bindings/clock/renesas,r9a06g032-sysctrl.txt new file mode 100644 index 000000000000..d60b99756bb9 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/renesas,r9a06g032-sysctrl.txt @@ -0,0 +1,43 @@ +* Renesas R9A06G032 SYSCTRL + +Required Properties: + + - compatible: Must be: + - "renesas,r9a06g032-sysctrl" + - reg: Base address and length of the SYSCTRL IO block. + - #clock-cells: Must be 1 + - clocks: References to the parent clocks: + - external 40mhz crystal. + - external (optional) 32.768khz + - external (optional) jtag input + - external (optional) RGMII_REFCLK + - clock-names: Must be: + clock-names = "mclk", "rtc", "jtag", "rgmii_ref_ext"; + +Examples +-------- + + - SYSCTRL node: + + sysctrl: system-controller@4000c000 { + compatible = "renesas,r9a06g032-sysctrl"; + reg = <0x4000c000 0x1000>; + #clock-cells = <1>; + + clocks = <&ext_mclk>, <&ext_rtc_clk>, + <&ext_jtag_clk>, <&ext_rgmii_ref>; + clock-names = "mclk", "rtc", "jtag", "rgmii_ref_ext"; + }; + + - Other nodes can use the clocks provided by SYSCTRL as in: + + #include + uart0: serial@40060000 { + compatible = "snps,dw-apb-uart"; + reg = <0x40060000 0x400>; + interrupts = ; + reg-shift = <2>; + reg-io-width = <4>; + clocks = <&sysctrl R9A06G032_CLK_UART0>; + clock-names = "baudclk"; + }; -- cgit v1.2.3