diff options
| -rw-r--r-- | Documentation/devicetree/bindings/clock/renesas,cpg-mssr.txt | 69 | ||||
| -rw-r--r-- | include/dt-bindings/clock/r8a7795-cpg-mssr.h | 63 | ||||
| -rw-r--r-- | include/dt-bindings/clock/renesas-cpg-mssr.h | 15 |
3 files changed, 147 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/clock/renesas,cpg-mssr.txt b/Documentation/devicetree/bindings/clock/renesas,cpg-mssr.txt new file mode 100644 index 000000000000..59297d34b208 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/renesas,cpg-mssr.txt @@ -0,0 +1,69 @@ +* Renesas Clock Pulse Generator / Module Standby and Software Reset + +On Renesas ARM SoCs (SH/R-Mobile, R-Car, RZ), the CPG (Clock Pulse Generator) +and MSSR (Module Standby and Software Reset) blocks are intimately connected, +and share the same register block. + +They provide the following functionalities: + - The CPG block generates various core clocks, + - The MSSR block provides two functions: + 1. Module Standby, providing a Clock Domain to control the clock supply + to individual SoC devices, + 2. Reset Control, to perform a software reset of individual SoC devices. + +Required Properties: + - compatible: Must be one of: + - "renesas,r8a7795-cpg-mssr" for the r8a7795 SoC + + - reg: Base address and length of the memory resource used by the CPG/MSSR + block + + - clocks: References to external parent clocks, one entry for each entry in + clock-names + - clock-names: List of external parent clock names. Valid names are: + - "extal" (r8a7795) + - "extalr" (r8a7795) + + - #clock-cells: Must be 2 + - For CPG core clocks, the two clock specifier cells must be "CPG_CORE" + and a core clock reference, as defined in + <dt-bindings/clock/*-cpg-mssr.h>. + - For module clocks, the two clock specifier cells must be "CPG_MOD" and + a module number, as defined in the datasheet. + + - #power-domain-cells: Must be 0 + - SoC devices that are part of the CPG/MSSR Clock Domain and can be + power-managed through Module Standby 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. + + +Examples +-------- + + - CPG device node: + + cpg: clock-controller@e6150000 { + compatible = "renesas,r8a7795-cpg-mssr"; + reg = <0 0xe6150000 0 0x1000>; + clocks = <&extal_clk>, <&extalr_clk>; + clock-names = "extal", "extalr"; + #clock-cells = <2>; + #power-domain-cells = <0>; + }; + + + - CPG/MSSR Clock Domain member device node: + + scif2: serial@e6e88000 { + compatible = "renesas,scif-r8a7795", "renesas,scif"; + reg = <0 0xe6e88000 0 64>; + interrupts = <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&cpg CPG_MOD 310>; + clock-names = "sci_ick"; + dmas = <&dmac1 0x13>, <&dmac1 0x12>; + dma-names = "tx", "rx"; + power-domains = <&cpg>; + status = "disabled"; + }; diff --git a/include/dt-bindings/clock/r8a7795-cpg-mssr.h b/include/dt-bindings/clock/r8a7795-cpg-mssr.h new file mode 100644 index 000000000000..e864aae0a256 --- /dev/null +++ b/include/dt-bindings/clock/r8a7795-cpg-mssr.h @@ -0,0 +1,63 @@ +/* + * Copyright (C) 2015 Renesas Electronics Corp. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ +#ifndef __DT_BINDINGS_CLOCK_R8A7795_CPG_MSSR_H__ +#define __DT_BINDINGS_CLOCK_R8A7795_CPG_MSSR_H__ + +#include <dt-bindings/clock/renesas-cpg-mssr.h> + +/* r8a7795 CPG Core Clocks */ +#define R8A7795_CLK_Z 0 +#define R8A7795_CLK_Z2 1 +#define R8A7795_CLK_ZR 2 +#define R8A7795_CLK_ZG 3 +#define R8A7795_CLK_ZTR 4 +#define R8A7795_CLK_ZTRD2 5 +#define R8A7795_CLK_ZT 6 +#define R8A7795_CLK_ZX 7 +#define R8A7795_CLK_S0D1 8 +#define R8A7795_CLK_S0D4 9 +#define R8A7795_CLK_S1D1 10 +#define R8A7795_CLK_S1D2 11 +#define R8A7795_CLK_S1D4 12 +#define R8A7795_CLK_S2D1 13 +#define R8A7795_CLK_S2D2 14 +#define R8A7795_CLK_S2D4 15 +#define R8A7795_CLK_S3D1 16 +#define R8A7795_CLK_S3D2 17 +#define R8A7795_CLK_S3D4 18 +#define R8A7795_CLK_LB 19 +#define R8A7795_CLK_CL 20 +#define R8A7795_CLK_ZB3 21 +#define R8A7795_CLK_ZB3D2 22 +#define R8A7795_CLK_CR 23 +#define R8A7795_CLK_CRD2 24 +#define R8A7795_CLK_SD0H 25 +#define R8A7795_CLK_SD0 26 +#define R8A7795_CLK_SD1H 27 +#define R8A7795_CLK_SD1 28 +#define R8A7795_CLK_SD2H 29 +#define R8A7795_CLK_SD2 30 +#define R8A7795_CLK_SD3H 31 +#define R8A7795_CLK_SD3 32 +#define R8A7795_CLK_SSP2 33 +#define R8A7795_CLK_SSP1 34 +#define R8A7795_CLK_SSPRS 35 +#define R8A7795_CLK_RPC 36 +#define R8A7795_CLK_RPCD2 37 +#define R8A7795_CLK_MSO 38 +#define R8A7795_CLK_CANFD 39 +#define R8A7795_CLK_HDMI 40 +#define R8A7795_CLK_CSI0 41 +#define R8A7795_CLK_CSIREF 42 +#define R8A7795_CLK_CP 43 +#define R8A7795_CLK_CPEX 44 +#define R8A7795_CLK_R 45 +#define R8A7795_CLK_OSC 46 + +#endif /* __DT_BINDINGS_CLOCK_R8A7795_CPG_MSSR_H__ */ diff --git a/include/dt-bindings/clock/renesas-cpg-mssr.h b/include/dt-bindings/clock/renesas-cpg-mssr.h new file mode 100644 index 000000000000..569a3cc33ffb --- /dev/null +++ b/include/dt-bindings/clock/renesas-cpg-mssr.h @@ -0,0 +1,15 @@ +/* + * Copyright (C) 2015 Renesas Electronics Corp. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ +#ifndef __DT_BINDINGS_CLOCK_RENESAS_CPG_MSSR_H__ +#define __DT_BINDINGS_CLOCK_RENESAS_CPG_MSSR_H__ + +#define CPG_CORE 0 /* Core Clock */ +#define CPG_MOD 1 /* Module Clock */ + +#endif /* __DT_BINDINGS_CLOCK_RENESAS_CPG_MSSR_H__ */ |