diff options
| author | Duje Mihanović <duje@dujemihanovic.xyz> | 2025-08-21 13:20:35 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2025-08-22 12:04:05 +0200 |
| commit | 5a22df198bd3f515dfd9ff064a81f41567427dfc (patch) | |
| tree | ffe1fc0aae2ad99ac74f15fe11d397e9f7e8f3ce | |
| parent | e7d1ce96f149d70b3cc75cdf9ac529cf91e9c564 (diff) | |
dt-bindings: mmc: sdhci-pxa: add state_uhs pinctrl
On the pxav3 controller, increasing the drive strength of the data pins
might be required to maintain stability on fast bus clocks (above 100
MHz). Add a state_uhs pinctrl to allow this.
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Duje Mihanović <duje@dujemihanovic.xyz>
Link: https://lore.kernel.org/r/20250821-pxav3-uhs-v4-1-bb588314f3c3@dujemihanovic.xyz
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
| -rw-r--r-- | Documentation/devicetree/bindings/mmc/sdhci-pxa.yaml | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/Documentation/devicetree/bindings/mmc/sdhci-pxa.yaml b/Documentation/devicetree/bindings/mmc/sdhci-pxa.yaml index e7c06032048a..fba1cc50fdf0 100644 --- a/Documentation/devicetree/bindings/mmc/sdhci-pxa.yaml +++ b/Documentation/devicetree/bindings/mmc/sdhci-pxa.yaml @@ -44,12 +44,27 @@ allOf: items: - const: default - const: state_cmd_gpio - pinctrl-0: - description: - Should contain default pinctrl. + pinctrl-1: description: Should switch CMD pin to GPIO mode as a high output. + - if: + properties: + compatible: + contains: + const: mrvl,pxav3-mmc + then: + properties: + pinctrl-names: + description: + Optional for increasing stability of the controller at fast bus clocks. + items: + - const: default + - const: state_uhs + + pinctrl-1: + description: + Should switch the drive strength of the data pins to high. properties: compatible: @@ -82,6 +97,14 @@ properties: - const: io - const: core + pinctrl-names: true + + pinctrl-0: + description: + Should contain default pinctrl. + + pinctrl-1: true + mrvl,clk-delay-cycles: description: Specify a number of cycles to delay for tuning. $ref: /schemas/types.yaml#/definitions/uint32 |