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authorOlof Johansson <olof@lixom.net>2014-05-21 22:45:52 -0700
committerOlof Johansson <olof@lixom.net>2014-05-21 22:45:52 -0700
commitdee1c20c2a16bb73f1efaed5a535fcc64fdeb72d (patch)
tree74d0ea42599d7a08a7045b9d39c3ffb7a4e01d0f /Documentation/devicetree/bindings/arm
parent89f6dfacebccf1666253ad1487585e6b234b9531 (diff)
parentb5839bd87f197e133a0025c36df286eab6e1d858 (diff)
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Merge tag 'samsung-dt' of http://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/dt
Samsung DT updates for v3.16 - exynos4 : add missing pinctrls - exynos4412-trats2 : update camera nodes and add rear camera nodes : rename alias for i2c_ak8975 label Update camera nodes for exynos4 and exynos4412-trats2 - exynos5250 : update DWC3 usb controller and enable to use generic USB DRD phy - exynos5250-snow : enable dp-controller, fimd, hdmi and pwm backlight : add sound node and Vbus regulator for USB 3.0 : add tps65090 power regulator : add pinctrl for EC irq and i2c-arbitrator - exynos5420 : change to correct compatible string for hdmi : add PD entry to MFC codec and enable DWC3 and USB 3.0 PHY : add MFC memory banks for smdk5420 and arndale-octa boards - exynos5420-peach-pit : add support exynos5420 based peach-pit board : add sound node and Vbus regulatro for USB 3.0 : enable dp-controller, fimd - exynos5420-smdk5420 : add Vbus regulatro for USB 3.0 - use generic DT bindings for map SYSRAM [olof: Fixed up conflict with a fix for 4212 secondary CPU startup, carrying over the fix to the reworked code] * tag 'samsung-dt' of http://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: (32 commits) ARM: dts: Add MFC memory banks to exynos5420 boards ARM: dts: enable dp-controller for exynos5420-peach-pit board ARM: dts: enable fimd for exynos5420 based peach-pit board ARM: dts: enable dp-controller for exynos5250-snow board ARM: dts: enable fimd for exynos5250-snow board ARM: dts: enable pwm backlight for exynos5250-snow ARM: dts: Add pwmX_out pinctrl nodes to exynos5250 ARM: dts: Add Vbus regulator for USB 3.0 on exynos5420-smdk5420 ARM: dts: Add Vbus regulator for USB 3.0 on exynos5420-peach-pit ARM: dts: Add Vbus regulator for USB 3.0 on exynos5250-snow ARM: dts: Add PD entry to MFC codec on exynos5420 ARM: dts: Add sound node for exynos5420-peach-pit board ARM: dts: Add sound node for exynos5250-snow board ARM: dts: Update DWC3 usb controller to use new phy driver for exynos5250 ARM: dts: Enable support for generic USB DRD phy for exynos5250 ARM: dts: Enable support for DWC3 controller for exynos5420 ARM: dts: Enable support for USB 3.0 PHY controller for exynos5420 ARM: dts: enable hdmi for exynos5420-peach-pit board ARM: dts: change to correct compatible string for exynos5420 hdmi ARM: dts: enable hdmi for exynos5250 based snow board ... Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'Documentation/devicetree/bindings/arm')
-rw-r--r--Documentation/devicetree/bindings/arm/exynos/smp-sysram.txt38
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diff --git a/Documentation/devicetree/bindings/arm/exynos/smp-sysram.txt b/Documentation/devicetree/bindings/arm/exynos/smp-sysram.txt
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+Samsung Exynos SYSRAM for SMP bringup:
+------------------------------------
+
+Samsung SMP-capable Exynos SoCs use part of the SYSRAM 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 SYSRAM.
+
+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-sysram" : for Secure SYSRAM
+ "samsung,exynos4210-sysram-ns" : for Non-secure SYSRAM
+
+The rest of the properties should follow the generic mmio-sram discription
+found in ../../misc/sysram.txt
+
+Example:
+
+ sysram@02020000 {
+ compatible = "mmio-sram";
+ reg = <0x02020000 0x54000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0 0x02020000 0x54000>;
+
+ smp-sysram@0 {
+ compatible = "samsung,exynos4210-sysram";
+ reg = <0x0 0x1000>;
+ };
+
+ smp-sysram@53000 {
+ compatible = "samsung,exynos4210-sysram-ns";
+ reg = <0x53000 0x1000>;
+ };
+ };
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