From: Zong Li <zong.li@sifive.com> To: robh+dt@kernel.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, krzysztof.kozlowski@canonical.com, conor.dooley@microchip.com, geert@linux-m68k.org, bin.meng@windriver.com, green.wan@sifive.com, vkoul@kernel.org, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Cc: Zong Li <zong.li@sifive.com>, Rob Herring <robh@kernel.org>, Palmer Dabbelt <palmer@rivosinc.com> Subject: [PATCH v8 1/4] dt-bindings: dma-engine: sifive,fu540: Add dma-channels property and modify compatible Date: Mon, 28 Mar 2022 17:52:22 +0800 [thread overview] Message-ID: <7cc9a7b5f7e6c28fc9eb172c441b5aed2159b8a0.1648461096.git.zong.li@sifive.com> (raw) In-Reply-To: <cover.1648461096.git.zong.li@sifive.com> Add dma-channels property, then we can determine how many channels there by device tree, rather than statically defining it in PDMA driver. In addition, we also modify the compatible for PDMA versioning scheme. Signed-off-by: Zong Li <zong.li@sifive.com> Reviewed-by: Rob Herring <robh@kernel.org> Suggested-by: Palmer Dabbelt <palmer@rivosinc.com> Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com> Acked-by: Palmer Dabbelt <palmer@rivosinc.com> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> --- .../bindings/dma/sifive,fu540-c000-pdma.yaml | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml b/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml index 47c46af25536..3271755787b4 100644 --- a/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml +++ b/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml @@ -28,7 +28,15 @@ allOf: properties: compatible: items: - - const: sifive,fu540-c000-pdma + - enum: + - sifive,fu540-c000-pdma + - const: sifive,pdma0 + description: + Should be "sifive,<chip>-pdma" and "sifive,pdma<version>". + Supported compatible strings are - + "sifive,fu540-c000-pdma" for the SiFive PDMA v0 as integrated onto the + SiFive FU540 chip resp and "sifive,pdma0" for the SiFive PDMA v0 IP block + with no chip integration tweaks. reg: maxItems: 1 @@ -37,6 +45,12 @@ properties: minItems: 1 maxItems: 8 + dma-channels: + description: For backwards-compatibility, the default value is 4 + minimum: 1 + maximum: 4 + default: 4 + '#dma-cells': const: 1 @@ -50,8 +64,9 @@ unevaluatedProperties: false examples: - | dma-controller@3000000 { - compatible = "sifive,fu540-c000-pdma"; + compatible = "sifive,fu540-c000-pdma", "sifive,pdma0"; reg = <0x3000000 0x8000>; + dma-channels = <4>; interrupts = <23>, <24>, <25>, <26>, <27>, <28>, <29>, <30>; #dma-cells = <1>; }; -- 2.35.1
WARNING: multiple messages have this Message-ID (diff)
From: Zong Li <zong.li@sifive.com> To: robh+dt@kernel.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, krzysztof.kozlowski@canonical.com, conor.dooley@microchip.com, geert@linux-m68k.org, bin.meng@windriver.com, green.wan@sifive.com, vkoul@kernel.org, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Cc: Zong Li <zong.li@sifive.com>, Rob Herring <robh@kernel.org>, Palmer Dabbelt <palmer@rivosinc.com> Subject: [PATCH v8 1/4] dt-bindings: dma-engine: sifive, fu540: Add dma-channels property and modify compatible Date: Mon, 28 Mar 2022 17:52:22 +0800 [thread overview] Message-ID: <7cc9a7b5f7e6c28fc9eb172c441b5aed2159b8a0.1648461096.git.zong.li@sifive.com> (raw) In-Reply-To: <cover.1648461096.git.zong.li@sifive.com> Add dma-channels property, then we can determine how many channels there by device tree, rather than statically defining it in PDMA driver. In addition, we also modify the compatible for PDMA versioning scheme. Signed-off-by: Zong Li <zong.li@sifive.com> Reviewed-by: Rob Herring <robh@kernel.org> Suggested-by: Palmer Dabbelt <palmer@rivosinc.com> Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com> Acked-by: Palmer Dabbelt <palmer@rivosinc.com> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> --- .../bindings/dma/sifive,fu540-c000-pdma.yaml | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml b/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml index 47c46af25536..3271755787b4 100644 --- a/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml +++ b/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml @@ -28,7 +28,15 @@ allOf: properties: compatible: items: - - const: sifive,fu540-c000-pdma + - enum: + - sifive,fu540-c000-pdma + - const: sifive,pdma0 + description: + Should be "sifive,<chip>-pdma" and "sifive,pdma<version>". + Supported compatible strings are - + "sifive,fu540-c000-pdma" for the SiFive PDMA v0 as integrated onto the + SiFive FU540 chip resp and "sifive,pdma0" for the SiFive PDMA v0 IP block + with no chip integration tweaks. reg: maxItems: 1 @@ -37,6 +45,12 @@ properties: minItems: 1 maxItems: 8 + dma-channels: + description: For backwards-compatibility, the default value is 4 + minimum: 1 + maximum: 4 + default: 4 + '#dma-cells': const: 1 @@ -50,8 +64,9 @@ unevaluatedProperties: false examples: - | dma-controller@3000000 { - compatible = "sifive,fu540-c000-pdma"; + compatible = "sifive,fu540-c000-pdma", "sifive,pdma0"; reg = <0x3000000 0x8000>; + dma-channels = <4>; interrupts = <23>, <24>, <25>, <26>, <27>, <28>, <29>, <30>; #dma-cells = <1>; }; -- 2.35.1 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv
next prev parent reply other threads:[~2022-03-28 9:52 UTC|newest] Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-03-28 9:52 [PATCH v8 0/4] Determine the number of DMA channels by 'dma-channels' property Zong Li 2022-03-28 9:52 ` Zong Li 2022-03-28 9:52 ` Zong Li [this message] 2022-03-28 9:52 ` [PATCH v8 1/4] dt-bindings: dma-engine: sifive, fu540: Add dma-channels property and modify compatible Zong Li 2022-03-29 1:35 ` [PATCH v8 1/4] dt-bindings: dma-engine: sifive,fu540: " Bin Meng 2022-03-29 1:35 ` Bin Meng 2022-03-28 9:52 ` [PATCH v8 2/4] riscv: dts: " Zong Li 2022-03-28 9:52 ` Zong Li 2022-03-29 1:35 ` Bin Meng 2022-03-29 1:35 ` Bin Meng 2022-03-28 9:52 ` [PATCH v8 3/4] riscv: dts: rename the node name of dma Zong Li 2022-03-28 9:52 ` Zong Li 2022-03-29 1:35 ` Bin Meng 2022-03-29 1:35 ` Bin Meng 2022-03-28 9:52 ` [PATCH v8 4/4] dmaengine: sf-pdma: Get number of channel by device tree Zong Li 2022-03-28 9:52 ` Zong Li 2022-03-29 1:35 ` Bin Meng 2022-03-29 1:35 ` Bin Meng 2022-03-31 1:06 ` [PATCH v8 0/4] Determine the number of DMA channels by 'dma-channels' property Zong Li 2022-03-31 1:06 ` Zong Li 2022-03-31 3:15 ` Palmer Dabbelt 2022-03-31 3:15 ` Palmer Dabbelt 2022-03-31 5:21 ` Vinod Koul 2022-03-31 5:21 ` Vinod Koul 2022-03-31 5:54 ` Palmer Dabbelt 2022-03-31 5:54 ` Palmer Dabbelt 2022-03-31 22:42 ` Palmer Dabbelt 2022-03-31 22:42 ` Palmer Dabbelt 2022-04-01 5:50 ` Zong Li 2022-04-01 5:50 ` Zong Li 2022-04-08 8:03 ` Zong Li 2022-04-08 8:03 ` Zong Li 2022-04-08 13:13 ` Vinod Koul 2022-04-08 13:13 ` Vinod Koul 2022-04-11 2:51 ` Zong Li 2022-04-11 2:51 ` Zong Li 2022-04-11 10:48 ` Vinod Koul 2022-04-11 10:48 ` Vinod Koul 2022-04-11 11:43 ` Zong Li 2022-04-11 11:43 ` Zong Li 2022-04-20 0:18 ` Palmer Dabbelt 2022-04-20 0:18 ` Palmer Dabbelt 2022-04-20 14:25 ` Rob Herring 2022-04-20 14:25 ` Rob Herring 2022-04-21 1:07 ` Zong Li 2022-04-21 1:07 ` Zong Li 2022-04-21 2:49 ` Palmer Dabbelt 2022-04-21 2:49 ` Palmer Dabbelt
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