linux-kernel - [PATCH v5 2/6] ARM: bcm2835: add DT for the bcm2835 auxiliar devices

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Message-Id: <1441359711-2800-3-git-send-email-kernel@martin.sperl.org>
Date:	Fri,  4 Sep 2015 09:41:46 +0000
From:	kernel@...tin.sperl.org
To:	Stephen Warren <swarren@...dotorg.org>, Lee Jones <lee@...nel.org>,
	Russell King <linux@....linux.org.uk>,
	Mark Brown <broonie@...nel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>, devicetree@...r.kernel.org,
	linux-rpi-kernel@...ts.infradead.org, linux-spi@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:	Martin Sperl <kernel@...tin.sperl.org>
Subject: [PATCH v5 2/6] ARM: bcm2835: add DT for the bcm2835 auxiliar devices

From: Martin Sperl <kernel@...tin.sperl.org>

Add device tree definitions for auxiliar bcm2835 devices:
* spi1
* spi2
* uart1

This also include a device to get used by the relevant
device-drivers (via a shared register) to enable/disable
the HW-block.

The aux-interrupt-register (0x7e21500) is intentionally left
out of scope, so that in the future it is still possible to
implement a separate interrupt-driver - if deemed necessary.

The spi (and also uart) drivers are able to use shared interrupts,
so there is no real need for an interrupt driver.

Signed-off-by: Martin Sperl <kernel@...tin.sperl.org>
---
 arch/arm/boot/dts/bcm2835.dtsi |   37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/arch/arm/boot/dts/bcm2835.dtsi b/arch/arm/boot/dts/bcm2835.dtsi
index 301c73f..4e6fc61 100644
--- a/arch/arm/boot/dts/bcm2835.dtsi
+++ b/arch/arm/boot/dts/bcm2835.dtsi
@@ -158,6 +158,43 @@
 		arm-pmu {
 			compatible = "arm,arm1176-pmu";
 		};
+
+		aux_enable: aux_enable@...e215004 {
+			compatible = "brcm,bcm2835-aux";
+			reg = <0x7e215004 0x04>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
+
+		uart1: uart@...15040 {
+			compatible = "brcm,bcm2835-aux-uart";
+			reg = <0x7e215040 0x40>;
+			interrupts = <1 29>;
+			brcm,aux-enable = <&aux_enable 1>;
+			status = "disabled";
+		};
+
+		spi1: spi@...15080 {
+			compatible = "brcm,bcm2835-aux-spi";
+			reg = <0x7e215080 0x40>;
+			brcm,aux-enable = <&aux_enable 2>;
+			interrupts = <1 29>;
+			clocks = <&clk_spi>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		spi2: spi@...150c0 {
+			compatible = "brcm,bcm2835-aux-spi";
+			reg = <0x7e2150c0 0x40>;
+			brcm,aux-enable = <&aux_enable 4>;
+			interrupts = <1 29>;
+			clocks = <&clk_spi>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
 	};

 	clocks {
--
1.7.10.4

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