linux-kernel - Re: [PATCH 1/1] ARM: dts: stm32: Configure qspi's mdma transfer to block for stm32mp151

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Message-ID: <21433a39-979a-b7ea-295a-fae208b9a52a@foss.st.com>
Date:   Tue, 1 Jun 2021 09:25:09 +0200
From:   Alexandre TORGUE <alexandre.torgue@...s.st.com>
To:     <patrice.chotard@...s.st.com>, <robh+dt@...nel.org>,
        <mark.rutland@....com>
CC:     <mcoquelin.stm32@...il.com>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux@...linux.org.uk>, <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        Christophe Kerello <christophe.kerello@...s.st.com>
Subject: Re: [PATCH 1/1] ARM: dts: stm32: Configure qspi's mdma transfer to
 block for stm32mp151

Hi Patrice

On 4/26/21 12:45 PM, patrice.chotard@...s.st.com wrote:
> From: Patrice Chotard <patrice.chotard@...s.st.com>
> 
> Configure qspi's mdma from buffer transfer (max 128 bytes) to
> block transfer (max 64K bytes).
> 
> mtd_speedtest shows that write throughtput increases :
>    - from 734 to 782 KiB/s (~6.5%) with s25fl512s SPI-NOR.
>    - from 4848 to 5319 KiB/s (~9.72%) with Micron SPI-NAND.
> 
> Signed-off-by: Christophe Kerello <christophe.kerello@...s.st.com>
> Signed-off-by: Patrice Chotard <patrice.chotard@...s.st.com>
> ---
>   arch/arm/boot/dts/stm32mp151.dtsi | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/stm32mp151.dtsi b/arch/arm/boot/dts/stm32mp151.dtsi
> index 4b8031782555..cb326c1e12bc 100644
> --- a/arch/arm/boot/dts/stm32mp151.dtsi
> +++ b/arch/arm/boot/dts/stm32mp151.dtsi
> @@ -1358,8 +1358,8 @@
>   			reg = <0x58003000 0x1000>, <0x70000000 0x10000000>;
>   			reg-names = "qspi", "qspi_mm";
>   			interrupts = <GIC_SPI 92 IRQ_TYPE_LEVEL_HIGH>;
> -			dmas = <&mdma1 22 0x2 0x100002 0x0 0x0>,
> -			       <&mdma1 22 0x2 0x100008 0x0 0x0>;
> +			dmas = <&mdma1 22 0x2 0x10100002 0x0 0x0>,
> +			       <&mdma1 22 0x2 0x10100008 0x0 0x0>;
>   			dma-names = "tx", "rx";
>   			clocks = <&rcc QSPI_K>;
>   			resets = <&rcc QSPI_R>;
> 

Applied on stm32-next.

Thanks.
Alex