Re: [PATCH 1/2] dt-bindings: sdhci-of-at91: add the microchip,sdcal-inverted property

Ulf Hansson
2019-10-18T10:58:50Z

On Tue, 8 Oct 2019 at 14:34, Nicolas Ferre <nicolas.ferre@microchip.com> wrote:
>
> Add the specific microchip,sdcal-inverted property to at91 sdhci
> device binding.
> This optional property describes how the SoC SDCAL pin is connected.
> It could be handled at SiP, SoM or board level.
>
> This property read by at91 sdhci driver will allow to put in place a
> software workaround that would reduce power consumption.
>
> Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>

Applied for next, thanks!

Kind regards
Uffe

> ---
> Documentation/devicetree/bindings/mmc/sdhci-atmel.txt | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/mmc/sdhci-atmel.txt b/Documentation/devicetree/bindings/mmc/sdhci-atmel.txt
> index 1b662d7171a0..503c6dbac1b2 100644
> --- a/Documentation/devicetree/bindings/mmc/sdhci-atmel.txt
> +++ b/Documentation/devicetree/bindings/mmc/sdhci-atmel.txt
> @@ -9,6 +9,11 @@ Required properties:
> - clocks: Phandlers to the clocks.
> - clock-names: Must be "hclock", "multclk", "baseclk";
>
> +Optional properties:
> +- microchip,sdcal-inverted: when present, polarity on the SDCAL SoC pin is
> + inverted. The default polarity for this signal is described in the datasheet.
> + For instance on SAMA5D2, the pin is usually tied to the GND with a resistor
> + and a capacitor (see "SDMMC I/O Calibration" chapter).
>
> Example:
>
> --
> 2.17.1
>