From 4f080c77ec53ec619304c0bbee5f6762fe3207a0 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 16 May 2023 14:55:31 +0200 Subject: dt-bindings: dma: dma40: Prefer to pass sram through phandle Extend the DMA40 bindings so that we can pass two SRAM segments as phandles instead of directly referring to the memory address in the second reg cell. This enables more granular control over the SRAM, and adds the optiona LCLA SRAM segment as well. Deprecate the old way of passing LCPA as a second reg cell, make sram compulsory. Reviewed-by: Rob Herring Signed-off-by: Linus Walleij Link: https://lore.kernel.org/r/20230417-ux500-dma40-cleanup-v3-1-60bfa6785968@linaro.org Signed-off-by: Vinod Koul --- .../devicetree/bindings/dma/stericsson,dma40.yaml | 36 +++++++++++++++++----- 1 file changed, 28 insertions(+), 8 deletions(-) (limited to 'Documentation/devicetree/bindings/dma/stericsson,dma40.yaml') diff --git a/Documentation/devicetree/bindings/dma/stericsson,dma40.yaml b/Documentation/devicetree/bindings/dma/stericsson,dma40.yaml index 64845347f44d..1e5752b19a49 100644 --- a/Documentation/devicetree/bindings/dma/stericsson,dma40.yaml +++ b/Documentation/devicetree/bindings/dma/stericsson,dma40.yaml @@ -112,14 +112,23 @@ properties: - const: stericsson,dma40 reg: - items: - - description: DMA40 memory base - - description: LCPA memory base + oneOf: + - items: + - description: DMA40 memory base + - items: + - description: DMA40 memory base + - description: LCPA memory base, deprecated, use eSRAM pool instead + deprecated: true + reg-names: - items: - - const: base - - const: lcpa + oneOf: + - items: + - const: base + - items: + - const: base + - const: lcpa + deprecated: true interrupts: maxItems: 1 @@ -127,6 +136,15 @@ properties: clocks: maxItems: 1 + sram: + $ref: /schemas/types.yaml#/definitions/phandle-array + description: A phandle array with inner size 1 (no arg cells). + First phandle is the LCPA (Logical Channel Parameter Address) memory. + Second phandle is the LCLA (Logical Channel Link base Address) memory. + maxItems: 2 + items: + maxItems: 1 + memcpy-channels: $ref: /schemas/types.yaml#/definitions/uint32-array description: Array of u32 elements indicating which channels on the DMA @@ -138,6 +156,7 @@ required: - reg - interrupts - clocks + - sram - memcpy-channels additionalProperties: false @@ -149,8 +168,9 @@ examples: #include dma-controller@801c0000 { compatible = "stericsson,db8500-dma40", "stericsson,dma40"; - reg = <0x801c0000 0x1000>, <0x40010000 0x800>; - reg-names = "base", "lcpa"; + reg = <0x801c0000 0x1000>; + reg-names = "base"; + sram = <&lcpa>, <&lcla>; interrupts = ; #dma-cells = <3>; memcpy-channels = <56 57 58 59 60>; -- cgit v1.2.3