From: Sachin Kamat <sachin.kamat-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
To: linux-samsung-soc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
t.figa-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org,
sachin.kamat-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
kgene.kim-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org,
arnd-r2nGTMty4D4@public.gmane.org,
heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org
Subject: [PATCH v2 2/2] Documentation: DT: Exynos: Bind SRAM though DT
Date: Tue, 6 May 2014 13:40:24 +0530 [thread overview]
Message-ID: <1399363824-23543-2-git-send-email-sachin.kamat@linaro.org> (raw)
In-Reply-To: <1399363824-23543-1-git-send-email-sachin.kamat-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Add SRAM binding documentation.
Signed-off-by: Sachin Kamat <sachin.kamat-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Acked-by: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
---
No changes since v1.
---
.../devicetree/bindings/arm/exynos/smp-sram.txt | 38 ++++++++++++++++++++
1 file changed, 38 insertions(+)
create mode 100644 Documentation/devicetree/bindings/arm/exynos/smp-sram.txt
diff --git a/Documentation/devicetree/bindings/arm/exynos/smp-sram.txt b/Documentation/devicetree/bindings/arm/exynos/smp-sram.txt
new file mode 100644
index 000000000000..c9ff2f58f9b6
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/exynos/smp-sram.txt
@@ -0,0 +1,38 @@
+Samsung Exynos SRAM for SMP bringup:
+------------------------------------
+
+Samsung SMP-capable Exynos SoCs use part of the SRAM for the bringup
+of the secondary cores. Once the core gets powered up it executes the
+code that is residing at some specific location of the SRAM.
+
+Therefore reserved section sub-nodes have to be added to the mmio-sram
+declaration. These nodes are of two types depending upon secure or
+non-secure execution environment.
+
+Required sub-node properties:
+- compatible : depending upon boot mode, should be
+ "samsung,exynos4210-sram" : for Secure SYSRAM
+ "samsung,exynos4210-sram-ns" : for Non-secure SYSRAM
+
+The rest of the properties should follow the generic mmio-sram discription
+found in ../../misc/sram.txt
+
+Example:
+
+ sram@02020000 {
+ compatible = "mmio-sram";
+ reg = <0x02020000 0x54000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0 0x02020000 0x54000>;
+
+ smp-sram@0 {
+ compatible = "samsung,exynos4210-sram";
+ reg = <0x0 0x1000>;
+ };
+
+ smp-sram@53000 {
+ compatible = "samsung,exynos4210-sram-ns";
+ reg = <0x53000 0x1000>;
+ };
+ };
--
1.7.9.5
--
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WARNING: multiple messages have this Message-ID (diff)
From: sachin.kamat@linaro.org (Sachin Kamat)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 2/2] Documentation: DT: Exynos: Bind SRAM though DT
Date: Tue, 6 May 2014 13:40:24 +0530 [thread overview]
Message-ID: <1399363824-23543-2-git-send-email-sachin.kamat@linaro.org> (raw)
In-Reply-To: <1399363824-23543-1-git-send-email-sachin.kamat@linaro.org>
Add SRAM binding documentation.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
---
No changes since v1.
---
.../devicetree/bindings/arm/exynos/smp-sram.txt | 38 ++++++++++++++++++++
1 file changed, 38 insertions(+)
create mode 100644 Documentation/devicetree/bindings/arm/exynos/smp-sram.txt
diff --git a/Documentation/devicetree/bindings/arm/exynos/smp-sram.txt b/Documentation/devicetree/bindings/arm/exynos/smp-sram.txt
new file mode 100644
index 000000000000..c9ff2f58f9b6
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/exynos/smp-sram.txt
@@ -0,0 +1,38 @@
+Samsung Exynos SRAM for SMP bringup:
+------------------------------------
+
+Samsung SMP-capable Exynos SoCs use part of the SRAM for the bringup
+of the secondary cores. Once the core gets powered up it executes the
+code that is residing at some specific location of the SRAM.
+
+Therefore reserved section sub-nodes have to be added to the mmio-sram
+declaration. These nodes are of two types depending upon secure or
+non-secure execution environment.
+
+Required sub-node properties:
+- compatible : depending upon boot mode, should be
+ "samsung,exynos4210-sram" : for Secure SYSRAM
+ "samsung,exynos4210-sram-ns" : for Non-secure SYSRAM
+
+The rest of the properties should follow the generic mmio-sram discription
+found in ../../misc/sram.txt
+
+Example:
+
+ sram at 02020000 {
+ compatible = "mmio-sram";
+ reg = <0x02020000 0x54000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0 0x02020000 0x54000>;
+
+ smp-sram at 0 {
+ compatible = "samsung,exynos4210-sram";
+ reg = <0x0 0x1000>;
+ };
+
+ smp-sram at 53000 {
+ compatible = "samsung,exynos4210-sram-ns";
+ reg = <0x53000 0x1000>;
+ };
+ };
--
1.7.9.5
next prev parent reply other threads:[~2014-05-06 8:10 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-06 8:10 [PATCH v2 1/2] ARM: EXYNOS: Map SYSRAM through generic SRAM bindings Sachin Kamat
2014-05-06 8:10 ` Sachin Kamat
[not found] ` <1399363824-23543-1-git-send-email-sachin.kamat-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2014-05-06 8:10 ` Sachin Kamat [this message]
2014-05-06 8:10 ` [PATCH v2 2/2] Documentation: DT: Exynos: Bind SRAM though DT Sachin Kamat
2014-05-06 16:44 ` [PATCH v2 1/2] ARM: EXYNOS: Map SYSRAM through generic SRAM bindings Tomasz Figa
2014-05-06 16:44 ` Tomasz Figa
2014-05-06 18:09 ` Sachin Kamat
2014-05-06 18:09 ` Sachin Kamat
2014-05-07 4:05 ` Sachin Kamat
2014-05-07 4:05 ` Sachin Kamat
2014-05-07 17:03 ` Tomasz Figa
2014-05-07 17:03 ` Tomasz Figa
2014-05-07 18:26 ` Sachin Kamat
2014-05-07 18:26 ` Sachin Kamat
-- strict thread matches above, loose matches on Subject: below --
2014-05-02 5:06 Sachin Kamat
2014-05-02 5:06 ` [PATCH v2 2/2] Documentation: DT: Exynos: Bind SRAM though DT Sachin Kamat
2014-05-02 5:06 ` Sachin Kamat
2014-05-02 8:53 ` Arnd Bergmann
2014-05-02 8:53 ` Arnd Bergmann
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