From: "Heiko Stübner" <heiko@sntech.de>
To: "linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Cc: arm@kernel.org, Grant Likely <grant.likely@linaro.org>,
Rob Herring <robherring2@gmail.com>,
devicetree@vger.kernel.org,
Philipp Zabel <p.zabel@pengutronix.de>,
linux-kernel@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Pawel Moll <pawel.moll@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Stephen Warren <swarren@wwwdotorg.org>,
Ian Campbell <ijc+devicetree@hellion.org.uk>
Subject: [PATCH v7 5/7] ARM: rockchip: add sram dt nodes and documentation
Date: Mon, 20 Jan 2014 16:44:56 +0100 [thread overview]
Message-ID: <1871002.oN7a1Shr3l@phil> (raw)
In-Reply-To: <4970034.fqvMoHdOyd@phil>
Add dt-nodes for the sram on rk3066 and rk3188 including the reserved section
needed for smp bringup.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Ulrich Prinz <ulrich.prinz@googlemail.com>
---
.../devicetree/bindings/arm/rockchip/smp-sram.txt | 23 ++++++++++++++++++++
arch/arm/boot/dts/rk3066a.dtsi | 6 +++++
arch/arm/boot/dts/rk3188.dtsi | 6 +++++
3 files changed, 35 insertions(+)
create mode 100644 Documentation/devicetree/bindings/arm/rockchip/smp-sram.txt
diff --git a/Documentation/devicetree/bindings/arm/rockchip/smp-sram.txt b/Documentation/devicetree/bindings/arm/rockchip/smp-sram.txt
new file mode 100644
index 0000000..80c878e
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/rockchip/smp-sram.txt
@@ -0,0 +1,23 @@
+Rockchip SRAM for smp bringup:
+------------------------------
+
+Rockchip's smp-capable SoCs use the first part of the sram for the bringup
+of the cores. Once the core gets powered up it executes the code that is
+residing at the very beginning of the sram.
+
+Therefore a reserved section has to be added to the mmio-sram declaration.
+
+Required node properties:
+- compatible : should contain both "rockchip,rk3066-sram", "mmio-sram"
+ so that the smp code can select the correct sram node.
+
+The rest of the properties should follow the generic mmio-sram discription
+found in ../../misc/sram.txt
+
+Example:
+
+ sram: sram@10080000 {
+ compatible = "rockchip,rk3066-sram", "mmio-sram";
+ reg = <0x10080000 0x10000>;
+ mmio-sram-reserved = <0x0 0x50>;
+ };
diff --git a/arch/arm/boot/dts/rk3066a.dtsi b/arch/arm/boot/dts/rk3066a.dtsi
index be5d2b0..0dfb680 100644
--- a/arch/arm/boot/dts/rk3066a.dtsi
+++ b/arch/arm/boot/dts/rk3066a.dtsi
@@ -64,6 +64,12 @@
clock-names = "timer", "pclk";
};
+ sram: sram@10080000 {
+ compatible = "rockchip,rk3066-sram", "mmio-sram";
+ reg = <0x10080000 0x10000>;
+ mmio-sram-reserved = <0x0 0x50>;
+ };
+
pinctrl@20008000 {
compatible = "rockchip,rk3066a-pinctrl";
reg = <0x20008000 0x150>;
diff --git a/arch/arm/boot/dts/rk3188.dtsi b/arch/arm/boot/dts/rk3188.dtsi
index 1a26b03..1fc7eda 100644
--- a/arch/arm/boot/dts/rk3188.dtsi
+++ b/arch/arm/boot/dts/rk3188.dtsi
@@ -60,6 +60,12 @@
interrupts = <GIC_PPI 13 0xf04>;
};
+ sram: sram@10080000 {
+ compatible = "rockchip,rk3066-sram", "mmio-sram";
+ reg = <0x10080000 0x8000>;
+ mmio-sram-reserved = <0x0 0x50>;
+ };
+
pinctrl@20008000 {
compatible = "rockchip,rk3188-pinctrl";
reg = <0x20008000 0xa0>,
--
1.7.10.4
next prev parent reply other threads:[~2014-01-20 15:45 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-20 15:41 [PATCH v7 0/7] ARM: rockchip: add smp functionality Heiko Stübner
2014-01-20 15:42 ` [PATCH v7 1/7] of: add functions to count number of elements in a property Heiko Stübner
2014-01-20 15:42 ` [PATCH v7 2/7] dt-bindings: sram: describe option to reserve parts of the memory Heiko Stübner
[not found] ` <20140205111247.476B7C40A89@trevor.secretlab.ca>
2014-02-05 12:05 ` Heiko Stübner
2014-01-20 15:43 ` [PATCH v7 3/7] misc: sram: implement mmio-sram-reserved option Heiko Stübner
2014-01-20 15:44 ` [PATCH v7 4/7] ARM: rockchip: add snoop-control-unit Heiko Stübner
2014-01-20 15:44 ` Heiko Stübner [this message]
2014-01-20 15:45 ` [PATCH v7 6/7] ARM: rockchip: add power-management-unit Heiko Stübner
2014-01-20 15:46 ` [PATCH v7 7/7] ARM: rockchip: add smp bringup code Heiko Stübner
2014-01-20 16:42 ` [PATCH v7.1 " Heiko Stübner
2014-01-31 22:03 ` [PATCH v7 0/7] ARM: rockchip: add smp functionality Heiko Stübner
2014-01-31 22:12 ` Rob Herring
2014-02-01 21:51 ` Philipp Zabel
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