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dt-bindings: mmc: renesas,sdhi: Document RZ/T2H and RZ/N2H support

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Add SDHI bindings for the Renesas RZ/T2H (a.k.a R9A09G077) and RZ/N2H
(a.k.a R9A09G087) SoCs. Use `renesas,sdhi-r9a09g057` as a fallback since
the SD/MMC block on these SoCs is identical to the one on RZ/V2H(P),
allowing reuse of the existing driver without modifications.

Update the binding schema to reflect differences: unlike RZ/V2H(P),
RZ/T2H and RZ/N2H do not require the `resets` property and use only a
two clocks instead of four.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250617164914.158091-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Lad Prabhakar
2025-06-17 17:49:14 +01:00
committed by Ulf Hansson
parent 15b8c45f98
commit b93d8b1cab
1 changed files with 53 additions and 32 deletions
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85
Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml
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@@ -72,6 +72,8 @@ properties:
- enum:
- renesas,sdhi-r9a09g047 # RZ/G3E
- renesas,sdhi-r9a09g056 # RZ/V2N
- renesas,sdhi-r9a09g077 # RZ/T2H
- renesas,sdhi-r9a09g087 # RZ/N2H
- const: renesas,sdhi-r9a09g057 # RZ/V2H(P)
reg:
@@ -129,59 +131,78 @@ allOf:
compatible:
contains:
enum:
- renesas,sdhi-r9a09g057
- renesas,rzg2l-sdhi
- renesas,sdhi-r9a09g077
- renesas,sdhi-r9a09g087
then:
properties:
resets: false
clocks:
items:
- description: IMCLK, SDHI channel main clock1.
- description: CLK_HS, SDHI channel High speed clock which operates
4 times that of SDHI channel main clock1.
- description: IMCLK2, SDHI channel main clock2. When this clock is
turned off, external SD card detection cannot be
detected.
- description: ACLK, SDHI channel bus clock.
- description: ACLK, IMCLK, SDHI channel bus and main clocks.
- description: CLK_HS, SDHI channel High speed clock.
clock-names:
items:
- const: core
- const: clkh
- const: cd
- const: aclk
required:
- clock-names
- resets
- const: clkh
else:
if:
properties:
compatible:
contains:
enum:
- renesas,rcar-gen2-sdhi
- renesas,rcar-gen3-sdhi
- renesas,rcar-gen4-sdhi
- renesas,sdhi-r9a09g057
- renesas,rzg2l-sdhi
then:
properties:
clocks:
minItems: 1
maxItems: 3
items:
- description: IMCLK, SDHI channel main clock1.
- description: CLK_HS, SDHI channel High speed clock which operates
4 times that of SDHI channel main clock1.
- description: IMCLK2, SDHI channel main clock2. When this clock is
turned off, external SD card detection cannot be
detected.
- description: ACLK, SDHI channel bus clock.
clock-names:
minItems: 1
uniqueItems: true
items:
- const: core
- enum: [ clkh, cd ]
- const: clkh
- const: cd
- const: aclk
required:
- clock-names
- resets
else:
properties:
clocks:
minItems: 1
maxItems: 2
clock-names:
minItems: 1
items:
- const: core
- const: cd
if:
properties:
compatible:
contains:
enum:
- renesas,rcar-gen2-sdhi
- renesas,rcar-gen3-sdhi
- renesas,rcar-gen4-sdhi
then:
properties:
clocks:
minItems: 1
maxItems: 3
clock-names:
minItems: 1
uniqueItems: true
items:
- const: core
- enum: [ clkh, cd ]
- const: cd
else:
properties:
clocks:
minItems: 1
maxItems: 2
clock-names:
minItems: 1
items:
- const: core
- const: cd
- if:
properties: