* [PATCH] dt-bindings: mmc: Add small binding node on level shifters
@ 2022-04-17 14:42 Linus Walleij
2022-04-21 13:54 ` Ulf Hansson
0 siblings, 1 reply; 2+ messages in thread
From: Linus Walleij @ 2022-04-17 14:42 UTC (permalink / raw)
To: linux-mmc, Ulf Hansson; +Cc: Linus Walleij, devicetree
The VQMMC is often provided by a level shifter, so drop a small note
in the bindings that this can be the case and how that is done.
It is helpful information since this is pretty common.
Cc: devicetree@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
Documentation/devicetree/bindings/mmc/mmc-controller.yaml | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/mmc/mmc-controller.yaml b/Documentation/devicetree/bindings/mmc/mmc-controller.yaml
index 513f3c8758aa..ff5ce89e5111 100644
--- a/Documentation/devicetree/bindings/mmc/mmc-controller.yaml
+++ b/Documentation/devicetree/bindings/mmc/mmc-controller.yaml
@@ -298,7 +298,10 @@ properties:
vqmmc-supply:
description:
- Supply for the bus IO line power
+ Supply for the bus IO line power, such as a level shifter.
+ If the level shifter is controlled by a GPIO line, this shall
+ be modeled as a "regulator-fixed" with a GPIO line for
+ switching the level shifter on/off.
mmc-pwrseq:
$ref: /schemas/types.yaml#/definitions/phandle
--
2.35.1
^ permalink raw reply related [flat|nested] 2+ messages in thread* Re: [PATCH] dt-bindings: mmc: Add small binding node on level shifters
2022-04-17 14:42 [PATCH] dt-bindings: mmc: Add small binding node on level shifters Linus Walleij
@ 2022-04-21 13:54 ` Ulf Hansson
0 siblings, 0 replies; 2+ messages in thread
From: Ulf Hansson @ 2022-04-21 13:54 UTC (permalink / raw)
To: Linus Walleij; +Cc: linux-mmc, devicetree
On Sun, 17 Apr 2022 at 16:44, Linus Walleij <linus.walleij@linaro.org> wrote:
>
> The VQMMC is often provided by a level shifter, so drop a small note
> in the bindings that this can be the case and how that is done.
> It is helpful information since this is pretty common.
>
> Cc: devicetree@vger.kernel.org
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Applied for next, thanks!
Kind regards
Uffe
> ---
> Documentation/devicetree/bindings/mmc/mmc-controller.yaml | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/mmc/mmc-controller.yaml b/Documentation/devicetree/bindings/mmc/mmc-controller.yaml
> index 513f3c8758aa..ff5ce89e5111 100644
> --- a/Documentation/devicetree/bindings/mmc/mmc-controller.yaml
> +++ b/Documentation/devicetree/bindings/mmc/mmc-controller.yaml
> @@ -298,7 +298,10 @@ properties:
>
> vqmmc-supply:
> description:
> - Supply for the bus IO line power
> + Supply for the bus IO line power, such as a level shifter.
> + If the level shifter is controlled by a GPIO line, this shall
> + be modeled as a "regulator-fixed" with a GPIO line for
> + switching the level shifter on/off.
>
> mmc-pwrseq:
> $ref: /schemas/types.yaml#/definitions/phandle
> --
> 2.35.1
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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2022-04-17 14:42 [PATCH] dt-bindings: mmc: Add small binding node on level shifters Linus Walleij
2022-04-21 13:54 ` Ulf Hansson
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