From mboxrd@z Thu Jan 1 00:00:00 1970 From: niklas.soderlund+renesas@ragnatech.se (=?UTF-8?q?Niklas=20S=C3=B6derlund?=) Date: Mon, 9 May 2016 18:44:06 +0200 Subject: [PATCHv6 7/8] ARM: dts: r8a7790: add iommus to dmac0 and dmac1 In-Reply-To: <1462812247-3414-1-git-send-email-niklas.soderlund+renesas@ragnatech.se> References: <1462812247-3414-1-git-send-email-niklas.soderlund+renesas@ragnatech.se> Message-ID: <1462812247-3414-8-git-send-email-niklas.soderlund+renesas@ragnatech.se> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org A unconfirmed hardware bug prevents channel 0 and 15 to be used by the DMAC together with the IPMMU. The DMAC driver will disable the channels reducing the effective number of channels to 14 per DMAC. Signed-off-by: Niklas S?derlund Acked-by: Laurent Pinchart --- arch/arm/boot/dts/r8a7790.dtsi | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a7790.dtsi index 404ef2b..2912320 100644 --- a/arch/arm/boot/dts/r8a7790.dtsi +++ b/arch/arm/boot/dts/r8a7790.dtsi @@ -336,6 +336,21 @@ power-domains = <&cpg_clocks>; #dma-cells = <1>; dma-channels = <15>; + iommus = <&ipmmu_ds 0>, + <&ipmmu_ds 1>, + <&ipmmu_ds 2>, + <&ipmmu_ds 3>, + <&ipmmu_ds 4>, + <&ipmmu_ds 5>, + <&ipmmu_ds 6>, + <&ipmmu_ds 7>, + <&ipmmu_ds 8>, + <&ipmmu_ds 9>, + <&ipmmu_ds 10>, + <&ipmmu_ds 11>, + <&ipmmu_ds 12>, + <&ipmmu_ds 13>, + <&ipmmu_ds 14>; }; dmac1: dma-controller at e6720000 { @@ -367,6 +382,21 @@ power-domains = <&cpg_clocks>; #dma-cells = <1>; dma-channels = <15>; + iommus = <&ipmmu_ds 15>, + <&ipmmu_ds 16>, + <&ipmmu_ds 17>, + <&ipmmu_ds 18>, + <&ipmmu_ds 19>, + <&ipmmu_ds 20>, + <&ipmmu_ds 21>, + <&ipmmu_ds 22>, + <&ipmmu_ds 23>, + <&ipmmu_ds 24>, + <&ipmmu_ds 25>, + <&ipmmu_ds 26>, + <&ipmmu_ds 27>, + <&ipmmu_ds 28>, + <&ipmmu_ds 29>; }; audma0: dma-controller at ec700000 { -- 2.8.2