linux-kernel - Re: [PATCH] ARM: dts: stm32: lxa-mc1: enable DDR50 mode on eMMC

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Message-ID: <685b9dcf-2139-9641-e1e4-6a1a74673077@st.com>
Date:   Wed, 23 Sep 2020 17:31:32 +0200
From:   Alexandre Torgue <alexandre.torgue@...com>
To:     Holger Assmann <h.assmann@...gutronix.de>,
        Rob Herring <robh+dt@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>
CC:     Ahmad Fatoum <a.fatoum@...gutronix.de>,
        <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ARM: dts: stm32: lxa-mc1: enable DDR50 mode on eMMC

Hi

On 8/28/20 3:00 PM, Holger Assmann wrote:
> From: Ahmad Fatoum <a.fatoum@...gutronix.de>
> 
> The "eMMC high-speed DDR mode (3.3V I/O)" at 50MHz is supported on
> the eMMC-interface of the lxa-mc1. Set it in the device tree to
> benefit from the speed improvement.
> 
> Signed-off-by: Ahmad Fatoum <a.fatoum@...gutronix.de>
> Signed-off-by: Holger Assmann <h.assmann@...gutronix.de>
> ---
>   arch/arm/boot/dts/stm32mp157c-lxa-mc1.dts | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/boot/dts/stm32mp157c-lxa-mc1.dts b/arch/arm/boot/dts/stm32mp157c-lxa-mc1.dts
> index b85025d00943..1e5333fd437f 100644
> --- a/arch/arm/boot/dts/stm32mp157c-lxa-mc1.dts
> +++ b/arch/arm/boot/dts/stm32mp157c-lxa-mc1.dts
> @@ -212,6 +212,7 @@
>   	pinctrl-1 = <&sdmmc2_b4_od_pins_a &sdmmc2_d47_pins_b>;
>   	pinctrl-2 = <&sdmmc2_b4_sleep_pins_a &sdmmc2_d47_sleep_pins_b>;
>   	bus-width = <8>;
> +	mmc-ddr-3_3v;
>   	no-1-8-v;
>   	no-sd;
>   	no-sdio;
> 

Applied on stm32-next.

Thanks.
Alex