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From: "Niklas Söderlund" <niklas.soderlund+renesas-1zkq55x86MTxsAP9Fp7wbw@public.gmane.org>
To: vinod.koul-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org,
	linux-renesas-soc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	dmaengine-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org
Cc: linux-arch-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	"Niklas Söderlund"
	<niklas.soderlund+renesas-1zkq55x86MTxsAP9Fp7wbw@public.gmane.org>,
	geert+renesas-gXvu3+zWzMSzQB+pC5nmwQ@public.gmane.org,
	arnd-r2nGTMty4D4@public.gmane.org,
	linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
	laurent.pinchart-ryLnwIuWjnjg/C1BVhZhaw@public.gmane.org,
	dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org
Subject: [PATCH v4 7/8] ARM: dts: r8a7790: add iommus to dmac0 and dmac1
Date: Tue, 16 Feb 2016 21:39:43 +0100	[thread overview]
Message-ID: <1455655184-14478-8-git-send-email-niklas.soderlund+renesas@ragnatech.se> (raw)
In-Reply-To: <1455655184-14478-1-git-send-email-niklas.soderlund+renesas-1zkq55x86MTxsAP9Fp7wbw@public.gmane.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 Söderlund <niklas.soderlund+renesas@ragnatech.se>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 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 7dfd393..048bbf8 100644
--- a/arch/arm/boot/dts/r8a7790.dtsi
+++ b/arch/arm/boot/dts/r8a7790.dtsi
@@ -294,6 +294,21 @@
 		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@e6720000 {
@@ -325,6 +340,21 @@
 		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@ec700000 {
-- 
2.7.1

_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu

WARNING: multiple messages have this Message-ID (diff)
From: "Niklas Söderlund" <niklas.soderlund+renesas@ragnatech.se>
To: vinod.koul@intel.com, linux-renesas-soc@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org,
	iommu@lists.linux-foundation.org
Cc: robin.murphy@arm.com, laurent.pinchart@ideasonboard.com,
	geert+renesas@glider.be, linus.walleij@linaro.org,
	dan.j.williams@intel.com, arnd@arndb.de,
	linux-arch@vger.kernel.org,
	"Niklas Söderlund" <niklas.soderlund+renesas@ragnatech.se>
Subject: [PATCH v4 7/8] ARM: dts: r8a7790: add iommus to dmac0 and dmac1
Date: Tue, 16 Feb 2016 21:39:43 +0100	[thread overview]
Message-ID: <1455655184-14478-8-git-send-email-niklas.soderlund+renesas@ragnatech.se> (raw)
Message-ID: <20160216203943.5ToGBIIBzNjyW0K8g6-InLGRPdyiVTVFUyJK5itPsbU@z> (raw)
In-Reply-To: <1455655184-14478-1-git-send-email-niklas.soderlund+renesas@ragnatech.se>

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 Söderlund <niklas.soderlund+renesas@ragnatech.se>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 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 7dfd393..048bbf8 100644
--- a/arch/arm/boot/dts/r8a7790.dtsi
+++ b/arch/arm/boot/dts/r8a7790.dtsi
@@ -294,6 +294,21 @@
 		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@e6720000 {
@@ -325,6 +340,21 @@
 		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@ec700000 {
-- 
2.7.1


  parent reply	other threads:[~2016-02-16 20:39 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-16 20:39 [PATCH v4 0/8] dmaengine: rcar-dmac: add iommu support for slave transfers Niklas Söderlund
2016-02-16 20:39 ` Niklas Söderlund
2016-02-16 20:39 ` [PATCH v4 1/8] iommu: Add MMIO mapping type Niklas Söderlund
     [not found] ` <1455655184-14478-1-git-send-email-niklas.soderlund+renesas-1zkq55x86MTxsAP9Fp7wbw@public.gmane.org>
2016-02-16 20:39   ` [PATCH v4 2/8] dma-mapping: add {map,unmap}_resource to dma_map_ops Niklas Söderlund
2016-02-16 20:39     ` Niklas Söderlund
2016-02-16 20:39   ` [PATCH v4 3/8] dma-mapping: add dma_{map,unmap}_resource Niklas Söderlund
2016-02-16 20:39     ` Niklas Söderlund
2016-02-16 20:39   ` [PATCH v4 4/8] arm: dma-mapping: add {map, unmap}_resource for iommu ops Niklas Söderlund
2016-02-16 20:39     ` [PATCH v4 4/8] arm: dma-mapping: add {map,unmap}_resource " Niklas Söderlund
2016-02-16 20:39   ` [PATCH v4 5/8] dmaengine: rcar-dmac: group slave configuration Niklas Söderlund
2016-02-16 20:39     ` Niklas Söderlund
2016-02-16 20:39   ` [PATCH v4 6/8] dmaengine: rcar-dmac: add iommu support for slave transfers Niklas Söderlund
2016-02-16 20:39     ` Niklas Söderlund
2016-03-07  6:03     ` Vinod Koul
2016-02-16 20:39   ` Niklas Söderlund [this message]
2016-02-16 20:39     ` [PATCH v4 7/8] ARM: dts: r8a7790: add iommus to dmac0 and dmac1 Niklas Söderlund
2016-02-16 20:39   ` [PATCH v4 8/8] ARM: dts: r8a7791: " Niklas Söderlund
2016-02-16 20:39     ` Niklas Söderlund

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