diff options
Diffstat (limited to 'Documentation/devicetree/bindings/timer/sifive,clint.yaml')
| -rw-r--r-- | Documentation/devicetree/bindings/timer/sifive,clint.yaml | 60 |
1 files changed, 47 insertions, 13 deletions
diff --git a/Documentation/devicetree/bindings/timer/sifive,clint.yaml b/Documentation/devicetree/bindings/timer/sifive,clint.yaml index bbad24165837..0d3b8dc362ba 100644 --- a/Documentation/devicetree/bindings/timer/sifive,clint.yaml +++ b/Documentation/devicetree/bindings/timer/sifive,clint.yaml @@ -20,15 +20,38 @@ description: property of "/cpus" DT node. The "timebase-frequency" DT property is described in Documentation/devicetree/bindings/riscv/cpus.yaml + T-Head C906/C910 CPU cores include an implementation of CLINT too, however + their implementation lacks a memory-mapped MTIME register, thus not + compatible with SiFive ones. + properties: compatible: oneOf: - items: - enum: - - sifive,fu540-c000-clint - - starfive,jh7100-clint - - canaan,k210-clint - - const: sifive,clint0 + - canaan,k210-clint # Canaan Kendryte K210 + - eswin,eic7700-clint # ESWIN EIC7700 + - sifive,fu540-c000-clint # SiFive FU540 + - spacemit,k1-clint # SpacemiT K1 + - starfive,jh7100-clint # StarFive JH7100 + - starfive,jh7110-clint # StarFive JH7110 + - starfive,jh8100-clint # StarFive JH8100 + - tenstorrent,blackhole-clint # Tenstorrent Blackhole + - const: sifive,clint0 # SiFive CLINT v0 IP block + - items: + - {} + - const: sifive,clint2 # SiFive CLINT v2 IP block + description: + SiFive CLINT v2 is the HRT that supports the Zicntr. The control of sifive,clint2 + differs from that of sifive,clint0, making them incompatible. + - items: + - enum: + - allwinner,sun20i-d1-clint + - sophgo,cv1800b-clint + - sophgo,cv1812h-clint + - sophgo,sg2002-clint + - thead,th1520-clint + - const: thead,c900-clint - items: - const: sifive,clint0 - const: riscv,clint0 @@ -36,14 +59,9 @@ properties: description: For the QEMU virt machine only description: - Should be "<vendor>,<chip>-clint" and "sifive,clint<version>". - Supported compatible strings are - - "sifive,fu540-c000-clint" for the SiFive CLINT v0 as integrated - onto the SiFive FU540 chip, "canaan,k210-clint" for the SiFive - CLINT v0 as integrated onto the Canaan Kendryte K210 chip, and - "sifive,clint0" for the SiFive CLINT v0 IP block with no chip - integration tweaks. - Please refer to sifive-blocks-ip-versioning.txt for details + Should be "<vendor>,<chip>-clint", followed by "sifive,clint<version>" + when compatible with a SiFive CLINT. Please refer to + sifive-blocks-ip-versioning.txt for details regarding the latter. reg: maxItems: 1 @@ -52,6 +70,22 @@ properties: minItems: 1 maxItems: 4095 + sifive,fine-ctr-bits: + maximum: 15 + description: The width in bits of the fine counter. + +if: + properties: + compatible: + contains: + const: sifive,clint2 +then: + required: + - sifive,fine-ctr-bits +else: + properties: + sifive,fine-ctr-bits: false + additionalProperties: false required: @@ -67,6 +101,6 @@ examples: <&cpu2intc 3>, <&cpu2intc 7>, <&cpu3intc 3>, <&cpu3intc 7>, <&cpu4intc 3>, <&cpu4intc 7>; - reg = <0x2000000 0x10000>; + reg = <0x2000000 0x10000>; }; ... |