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Date: Wed, 29 Mar 2017 18:42:42 +0800 From: Icenowy Zheng <icenowy@...c.io> To: Michael Turquette <mturquette@...libre.com>, Maxime Ripard <maxime.ripard@...e-electrons.com>, Rob Herring <robh+dt@...nel.org>, Chen-Yu Tsai <wens@...e.org> Cc: linux-clk@...r.kernel.org, devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, linux-sunxi@...glegroups.com, Icenowy Zheng <icenowy@...c.xyz> Subject: [PATCH v3 1/5] dt-bindings: update device tree binding for Allwinner PRCM CCUs From: Icenowy Zheng <icenowy@...c.xyz> Many Allwinner SoCs after A31 have a CCU in PRCM block. Give the ones on H3 and A64 compatible strings. Signed-off-by: Icenowy Zheng <icenowy@...c.xyz> --- Changes in v3: - Removed frequency info of iosc in this device tree binding document. Changes in v2: - Add iosc for R_CCU's on H3/A64. Documentation/devicetree/bindings/clock/sunxi-ccu.txt | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/clock/sunxi-ccu.txt b/Documentation/devicetree/bindings/clock/sunxi-ccu.txt index 68512aa398a9..e9c5a1d9834a 100644 --- a/Documentation/devicetree/bindings/clock/sunxi-ccu.txt +++ b/Documentation/devicetree/bindings/clock/sunxi-ccu.txt @@ -7,9 +7,11 @@ Required properties : - "allwinner,sun8i-a23-ccu" - "allwinner,sun8i-a33-ccu" - "allwinner,sun8i-h3-ccu" + - "allwinner,sun8i-h3-r-ccu" - "allwinner,sun8i-v3s-ccu" - "allwinner,sun9i-a80-ccu" - "allwinner,sun50i-a64-ccu" + - "allwinner,sun50i-a64-r-ccu" - "allwinner,sun50i-h5-ccu" - reg: Must contain the registers base address and length @@ -20,7 +22,10 @@ Required properties : - #clock-cells : must contain 1 - #reset-cells : must contain 1 -Example: +For the PRCM CCUs on H3/A64, one more clock is needed: +- "iosc": the SoC's internal frequency oscillator + +Example for generic CCU: ccu: clock@...20000 { compatible = "allwinner,sun8i-h3-ccu"; reg = <0x01c20000 0x400>; @@ -29,3 +34,13 @@ ccu: clock@...20000 { #clock-cells = <1>; #reset-cells = <1>; }; + +Example for PRCM CCU: +r_ccu: clock@...01400 { + compatible = "allwinner,sun50i-a64-r-ccu"; + reg = <0x01f01400 0x100>; + clocks = <&osc24M>, <&osc32k>, <&iosc>; + clock-names = "hosc", "losc", "iosc"; + #clock-cells = <1>; + #reset-cells = <1>; +}; -- 2.12.0
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