From: nm@ti•com (Nishanth Menon)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 2/3] ARM: dts: DRA: Add crossbar device binding
Date: Thu, 18 Jul 2013 14:04:38 -0500 [thread overview]
Message-ID: <51E83C46.3040000@ti.com> (raw)
In-Reply-To: <1374165830-6367-3-git-send-email-r.sricharan@ti.com>
On 07/18/2013 11:43 AM, Sricharan R wrote:
> This adds the irq/dma crossbar device nodes.
>
> There is a IRQ and DMA crossbar device in the soc, which
> maps the irq/dma requests from the peripherals to the
> mpu/dsp/ipu/eve interrupt and sdma/edma controller's inputs.
> The Peripheral irq/dma requests are connected to only one crossbar
> input and the output of the crossbar is connected to only one
> controller's input line. On POR, there are some mappings which
> are done by default. Those peripherals which do not have a
> mapping on POR, should be configured to route its requests
> using the crossbar control registers.
>
What is POR? Plan on Record? I supppose, we just love our TLA?
> The irq/dma mapping for some peripherals are
> added with the crossbar nodes here.
>
> Signed-off-by: Sricharan R <r.sricharan@ti•com>
> ---
> arch/arm/boot/dts/dra7.dtsi | 19 +++++++++++++++++++
> 1 file changed, 19 insertions(+)
>
> diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
> index a5d9350..e6208b4 100644
> --- a/arch/arm/boot/dts/dra7.dtsi
> +++ b/arch/arm/boot/dts/dra7.dtsi
> @@ -85,6 +85,25 @@
> ranges;
> ti,hwmods = "l3_main_1", "l3_main_2";
>
> + crossbar_mpu: mpuirq at 4a002a48 {
> + compatible = "crossbar";
> + crossbar-name = "mpu-irq";
> + reg = <0x4a002a48 0x0130>;
> + reg-width = <16>;
> + crossbar-lines = "mpu-irq", "rtc-ss-alarm", <0x9f 0xd9 0x12c>,
> + "mpu-irq", "mcasp3-arevt", <0x9e 0x96 0x12a>,
> + "mpu-irq", "mcasp3-axevt", <0x9d 0x97 0x128>;
a) I'd like to use UART10. oh, let me guess: we dont map all cross bar
options here.. just "certain ones"
b) I like to use random 6 uarts out of the available 10 uarts on the fly.
c) I'd like to use IRQCROSS bar such that i use all the hardware block
instances that dont have default GIC IRQ mapping.
> + };
> +
> + crossbar_dma: dmareq at 4a002b78 {
> + compatible = "crossbar";
> + crossbar-name = "dma-req";
> + reg = <0x4a002b78 0x0100>;
> + reg-width = <16>;
> + crossbar-lines = "dma-req", "mcasp3-rx", <0x7e 0x84 0xfc>,
> + "dma-req", "mcasp3-tx", <0x7d 0x85 0xfa>;
> + };
> +
> counter32k: counter at 4ae04000 {
> compatible = "ti,omap-counter32k";
> reg = <0x4ae04000 0x40>;
>
--
Regards,
Nishanth Menon
next prev parent reply other threads:[~2013-07-18 19:04 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-18 16:43 [PATCH 0/3] Add crossbar driver Sricharan R
2013-07-18 16:43 ` [PATCH 1/3] misc: " Sricharan R
2013-07-18 16:55 ` Joe Perches
2013-07-18 18:25 ` Felipe Balbi
2013-07-21 16:33 ` Linus Walleij
2013-07-18 18:56 ` Nishanth Menon
2013-07-18 23:39 ` Santosh Shilimkar
2013-07-19 0:13 ` Nishanth Menon
2013-07-19 10:48 ` Sricharan R
2013-07-19 7:17 ` Tony Lindgren
2013-07-19 10:48 ` Sricharan R
2013-07-21 16:49 ` Linus Walleij
2013-07-22 12:20 ` Sricharan R
2013-07-22 16:23 ` Santosh Shilimkar
2013-07-24 16:08 ` Nishanth Menon
2013-07-24 16:38 ` Santosh Shilimkar
2013-07-24 16:47 ` Nishanth Menon
2013-07-24 18:43 ` Sricharan R
2013-07-24 18:51 ` Nishanth Menon
2013-07-24 18:59 ` Santosh Shilimkar
2013-08-13 8:10 ` Tony Lindgren
2013-08-13 9:56 ` Sricharan R
2013-08-13 13:29 ` Santosh Shilimkar
2013-08-15 20:01 ` Linus Walleij
2013-08-15 20:26 ` Santosh Shilimkar
2013-08-15 20:51 ` Linus Walleij
2013-08-15 21:14 ` Santosh Shilimkar
2013-08-21 21:10 ` Linus Walleij
2013-08-22 11:33 ` Sricharan R
2013-08-22 13:45 ` Santosh Shilimkar
2013-08-23 4:47 ` Rajendra Nayak
2013-08-23 6:11 ` Sricharan R
2013-08-23 6:17 ` Rajendra Nayak
2013-08-23 6:36 ` Sekhar Nori
2013-08-23 6:53 ` Sricharan R
2013-08-23 8:14 ` Sekhar Nori
2013-08-23 13:38 ` Santosh Shilimkar
2013-08-23 16:28 ` Sekhar Nori
2013-08-23 19:06 ` Linus Walleij
2013-08-23 19:44 ` Santosh Shilimkar
2013-08-13 13:28 ` Santosh Shilimkar
2013-08-14 7:27 ` Tony Lindgren
2013-07-18 16:43 ` [PATCH 2/3] ARM: dts: DRA: Add crossbar device binding Sricharan R
2013-07-18 19:04 ` Nishanth Menon [this message]
2013-07-18 16:43 ` [PATCH 3/3] ARM: DRA7xx: Enable crossbar driver for the soc Sricharan R
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