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| author | Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> | 2025-06-17 19:49:14 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2025-07-03 13:26:14 +0300 |
| commit | b93d8b1cab299bc76f574f9e3cb8aafcfafc0037 (patch) | |
| tree | db98ebb5e88922ce9c5afe6fc90b4e2a69a3f9ae /Documentation | |
| parent | 15b8c45f982a7bf6cd3114e905414aabc5508fb6 (diff) | |
| download | linux-b93d8b1cab299bc76f574f9e3cb8aafcfafc0037.tar.xz | |
dt-bindings: mmc: renesas,sdhi: Document RZ/T2H and RZ/N2H support
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>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml | 85 |
1 files changed, 53 insertions, 32 deletions
diff --git a/Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml b/Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml index 7563623876fc..ba15ccbda61a 100644 --- a/Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml +++ b/Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml @@ -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 - clock-names: - minItems: 1 - uniqueItems: true items: - - const: core - - enum: [ clkh, cd ] - - const: cd - else: - properties: - clocks: - minItems: 1 - maxItems: 2 + - 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 items: - const: core + - const: clkh - const: cd + - const: aclk + required: + - clock-names + - resets + else: + 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: |