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Message-ID: <20150409151846.GR18048@atomide.com>
Date: Thu, 9 Apr 2015 08:18:46 -0700
From: Tony Lindgren <tony@...mide.com>
To: Peter Ujfalusi <peter.ujfalusi@...com>
Cc: vinod.koul@...el.com, linux@....linux.org.uk,
grant.likely@...aro.org, dmaengine@...r.kernel.org,
linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
robh+dt@...nel.org, nm@...com, arnd@...db.de,
maxime.ripard@...e-electrons.com
Subject: Re: [PATCH v5 8/8] ARM: DTS: dra7x: Integrate sDMA crossbar
* Peter Ujfalusi <peter.ujfalusi@...com> [150409 02:37]:
> The sDMA requests are routed through the DMA crossbar and without the
> crossbar only peripherals using DMA request 0-127 can be used.
I assume this can be merged separately from the driver
changes?
Otherwise we'll have the same kind of "flag day" mess with
the IRQ crossbar..
Regards,
Tony
> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
> ---
> arch/arm/boot/dts/dra7.dtsi | 57 ++++++++++++++++++++++++++-------------------
> 1 file changed, 33 insertions(+), 24 deletions(-)
>
> diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
> index 5332b57b4950..a2f4aa01984f 100644
> --- a/arch/arm/boot/dts/dra7.dtsi
> +++ b/arch/arm/boot/dts/dra7.dtsi
> @@ -303,6 +303,15 @@
> dma-requests = <127>;
> };
>
> + sdma_xbar: dma-router@...02b78 {
> + compatible = "ti,dra7-dma-crossbar";
> + reg = <0x4a002b78 0xfc>;
> + #dma-cells = <1>;
> + dma-requests = <205>;
> + ti,dma-safe-map = <0>;
> + dma-masters = <&sdma>;
> + };
> +
> gpio1: gpio@...10000 {
> compatible = "ti,omap4-gpio";
> reg = <0x4ae10000 0x200>;
> @@ -398,7 +407,7 @@
> ti,hwmods = "uart1";
> clock-frequency = <48000000>;
> status = "disabled";
> - dmas = <&sdma 49>, <&sdma 50>;
> + dmas = <&sdma_xbar 49>, <&sdma_xbar 50>;
> dma-names = "tx", "rx";
> };
>
> @@ -409,7 +418,7 @@
> ti,hwmods = "uart2";
> clock-frequency = <48000000>;
> status = "disabled";
> - dmas = <&sdma 51>, <&sdma 52>;
> + dmas = <&sdma_xbar 51>, <&sdma_xbar 52>;
> dma-names = "tx", "rx";
> };
>
> @@ -420,7 +429,7 @@
> ti,hwmods = "uart3";
> clock-frequency = <48000000>;
> status = "disabled";
> - dmas = <&sdma 53>, <&sdma 54>;
> + dmas = <&sdma_xbar 53>, <&sdma_xbar 54>;
> dma-names = "tx", "rx";
> };
>
> @@ -431,7 +440,7 @@
> ti,hwmods = "uart4";
> clock-frequency = <48000000>;
> status = "disabled";
> - dmas = <&sdma 55>, <&sdma 56>;
> + dmas = <&sdma_xbar 55>, <&sdma_xbar 56>;
> dma-names = "tx", "rx";
> };
>
> @@ -442,7 +451,7 @@
> ti,hwmods = "uart5";
> clock-frequency = <48000000>;
> status = "disabled";
> - dmas = <&sdma 63>, <&sdma 64>;
> + dmas = <&sdma_xbar 63>, <&sdma_xbar 64>;
> dma-names = "tx", "rx";
> };
>
> @@ -453,7 +462,7 @@
> ti,hwmods = "uart6";
> clock-frequency = <48000000>;
> status = "disabled";
> - dmas = <&sdma 79>, <&sdma 80>;
> + dmas = <&sdma_xbar 79>, <&sdma_xbar 80>;
> dma-names = "tx", "rx";
> };
>
> @@ -862,7 +871,7 @@
> ti,hwmods = "mmc1";
> ti,dual-volt;
> ti,needs-special-reset;
> - dmas = <&sdma 61>, <&sdma 62>;
> + dmas = <&sdma_xbar 61>, <&sdma_xbar 62>;
> dma-names = "tx", "rx";
> status = "disabled";
> pbias-supply = <&pbias_mmc_reg>;
> @@ -874,7 +883,7 @@
> interrupts = <GIC_SPI 81 IRQ_TYPE_LEVEL_HIGH>;
> ti,hwmods = "mmc2";
> ti,needs-special-reset;
> - dmas = <&sdma 47>, <&sdma 48>;
> + dmas = <&sdma_xbar 47>, <&sdma_xbar 48>;
> dma-names = "tx", "rx";
> status = "disabled";
> };
> @@ -885,7 +894,7 @@
> interrupts = <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;
> ti,hwmods = "mmc3";
> ti,needs-special-reset;
> - dmas = <&sdma 77>, <&sdma 78>;
> + dmas = <&sdma_xbar 77>, <&sdma_xbar 78>;
> dma-names = "tx", "rx";
> status = "disabled";
> };
> @@ -896,7 +905,7 @@
> interrupts = <GIC_SPI 91 IRQ_TYPE_LEVEL_HIGH>;
> ti,hwmods = "mmc4";
> ti,needs-special-reset;
> - dmas = <&sdma 57>, <&sdma 58>;
> + dmas = <&sdma_xbar 57>, <&sdma_xbar 58>;
> dma-names = "tx", "rx";
> status = "disabled";
> };
> @@ -1041,14 +1050,14 @@
> #size-cells = <0>;
> ti,hwmods = "mcspi1";
> ti,spi-num-cs = <4>;
> - dmas = <&sdma 35>,
> - <&sdma 36>,
> - <&sdma 37>,
> - <&sdma 38>,
> - <&sdma 39>,
> - <&sdma 40>,
> - <&sdma 41>,
> - <&sdma 42>;
> + dmas = <&sdma_xbar 35>,
> + <&sdma_xbar 36>,
> + <&sdma_xbar 37>,
> + <&sdma_xbar 38>,
> + <&sdma_xbar 39>,
> + <&sdma_xbar 40>,
> + <&sdma_xbar 41>,
> + <&sdma_xbar 42>;
> dma-names = "tx0", "rx0", "tx1", "rx1",
> "tx2", "rx2", "tx3", "rx3";
> status = "disabled";
> @@ -1062,10 +1071,10 @@
> #size-cells = <0>;
> ti,hwmods = "mcspi2";
> ti,spi-num-cs = <2>;
> - dmas = <&sdma 43>,
> - <&sdma 44>,
> - <&sdma 45>,
> - <&sdma 46>;
> + dmas = <&sdma_xbar 43>,
> + <&sdma_xbar 44>,
> + <&sdma_xbar 45>,
> + <&sdma_xbar 46>;
> dma-names = "tx0", "rx0", "tx1", "rx1";
> status = "disabled";
> };
> @@ -1078,7 +1087,7 @@
> #size-cells = <0>;
> ti,hwmods = "mcspi3";
> ti,spi-num-cs = <2>;
> - dmas = <&sdma 15>, <&sdma 16>;
> + dmas = <&sdma_xbar 15>, <&sdma_xbar 16>;
> dma-names = "tx0", "rx0";
> status = "disabled";
> };
> @@ -1091,7 +1100,7 @@
> #size-cells = <0>;
> ti,hwmods = "mcspi4";
> ti,spi-num-cs = <1>;
> - dmas = <&sdma 70>, <&sdma 71>;
> + dmas = <&sdma_xbar 70>, <&sdma_xbar 71>;
> dma-names = "tx0", "rx0";
> status = "disabled";
> };
> --
> 2.3.5
>
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