linux-kernel - Re: dma_mask limited to 32-bits with OF platform device

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Date:   Tue, 18 Feb 2020 10:28:26 +0200
From:   Roger Quadros <rogerq@...com>
To:     Christoph Hellwig <hch@....de>, Robin Murphy <robin.murphy@....com>
CC:     Péter Ujfalusi <peter.ujfalusi@...com>,
        Murali Karicheri <m-karicheri2@...com>,
        "Nori, Sekhar" <nsekhar@...com>, "Anna, Suman" <s-anna@...com>,
        <stefan.wahren@...e.com>, <afaerber@...e.de>, <hverkuil@...all.nl>,
        Rob Herring <robh+dt@...nel.org>, <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Nishanth Menon <nm@...com>,
        "hdegoede@...hat.com" <hdegoede@...hat.com>,
        Vignesh Raghavendra <vigneshr@...com>
Subject: Re: dma_mask limited to 32-bits with OF platform device

Chrishtoph,

The branch works fine for SATA on DRA7 with CONFIG_LPAE once I
have the below DT fix.

Do you intend to send these fixes to -stable?

------------------------- arch/arm/boot/dts/dra7.dtsi -------------------------
index d78b684e7fca..853ecf3cfb37 100644
@@ -645,6 +645,8 @@
  		sata: sata@...41100 {
  			compatible = "snps,dwc-ahci";
  			reg = <0x4a140000 0x1100>, <0x4a141100 0x7>;
+			#size-cells = <2>;
+			dma-ranges = <0x00000000 0x00000000 0x1 0x00000000>;
  			interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
  			phys = <&sata_phy>;
  			phy-names = "sata-phy";


cheers,
-roger

On 17/02/2020 15:21, Christoph Hellwig wrote:
> Roger,
> 
> can you try the branch below and check if that helps?
> 
>      git://git.infradead.org/users/hch/misc.git arm-dma-bus-limit
> 
> Gitweb:
> 
>      http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/arm-dma-bus-limit
> 

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