[RFC PATCH 3/4] dt-bindings: mmc: renesas,sdhi: Document RZ/V2H(P) support

Prabhakar
2024-06-05T07:49:51Z

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

The SD/MMC block on the RZ/V2H(P) ("R9A09G057") SoC is similar to that
of the R-Car Gen3, but it has some differences:
- HS400 is not supported.
- It supports the SD_IOVS bit to control the IO voltage level.
- It supports fixed address mode.

To accommodate these differences, a SoC-specific 'renesas,sdhi-r9a09g057'
compatible string is added.

A "vqmmc-r9a09g057-regulator" regulator object is added to handle the
voltage level switch of the SD/MMC pins.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
.../devicetree/bindings/mmc/renesas,sdhi.yaml | 20 ++++++++++++++++++-
1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml b/Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml
index 3d0e61e59856..154f5767cf03 100644
--- a/Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml
+++ b/Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml
@@ -18,6 +18,7 @@ properties:
- renesas,sdhi-r7s9210 # SH-Mobile AG5
- renesas,sdhi-r8a73a4 # R-Mobile APE6
- renesas,sdhi-r8a7740 # R-Mobile A1
+ - renesas,sdhi-r9a09g057 # RZ/V2H(P)
- renesas,sdhi-sh73a0 # R-Mobile APE6
- items:
- enum:
@@ -118,7 +119,9 @@ allOf:
properties:
compatible:
contains:
- const: renesas,rzg2l-sdhi
+ enum:
+ - renesas,sdhi-r9a09g057
+ - renesas,rzg2l-sdhi
then:
properties:
clocks:
@@ -204,6 +207,21 @@ allOf:
sectioned off to be run by a separate second clock source to allow
the main core clock to be turned off to save power.

+ - if:
+ properties:
+ compatible:
+ contains:
+ const: renesas,sdhi-r9a09g057
+ then:
+ properties:
+ vqmmc-r9a09g057-regulator:
+ type: object
+ description: VQMMC SD regulator
+ $ref: /schemas/regulator/regulator.yaml#
+ unevaluatedProperties: false
+ required:
+ - vqmmc-r9a09g057-regulator
+
required:
- compatible
- reg
--
2.34.1