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-rw-r--r--target/linux/omap/patches-3.12/201-ARM-dts-omap-Add-new-bindings-for-OMAP.patch105
1 files changed, 105 insertions, 0 deletions
diff --git a/target/linux/omap/patches-3.12/201-ARM-dts-omap-Add-new-bindings-for-OMAP.patch b/target/linux/omap/patches-3.12/201-ARM-dts-omap-Add-new-bindings-for-OMAP.patch
new file mode 100644
index 0000000000..7dd44772c2
--- /dev/null
+++ b/target/linux/omap/patches-3.12/201-ARM-dts-omap-Add-new-bindings-for-OMAP.patch
@@ -0,0 +1,105 @@
+On OMAP we have co-processor IPs, memory controllers,
+GPIOs which control regulators and power switches to
+PMIC, and SoC internal Bus IPs, some or most of which
+should either not be reset or idled or both at init.
+(In some cases there are erratas which prevent an IP
+from being reset)
+Have a way to pass this information from DT.
+
+Update the am33xx/omap4 and omap5 dtsi files with the
+new bindings for modules which either should not be
+idled. reset or both. A later patch would cleanup the
+same information that exists today as part of the hwmod
+data files.
+
+Signed-off-by: Rajendra Nayak <rnayak@ti.com>
+
+---
+.../devicetree/bindings/arm/omap/omap.txt | 3 ++-
+ arch/arm/boot/dts/am33xx.dtsi | 2 ++
+ arch/arm/boot/dts/omap4.dtsi | 3 +++
+ arch/arm/boot/dts/omap5.dtsi | 2 ++
+ 4 files changed, 9 insertions(+), 1 deletion(-)
+
+diff --git a/Documentation/devicetree/bindings/arm/omap/omap.txt b/Documentation/devicetree/bindings/arm/omap/omap.txt
+index 91b7049..808c154 100644
+--- a/Documentation/devicetree/bindings/arm/omap/omap.txt
++++ b/Documentation/devicetree/bindings/arm/omap/omap.txt
+@@ -21,7 +21,8 @@ Required properties:
+ Optional properties:
+ - ti,no_idle_on_suspend: When present, it prevents the PM to idle the module
+ during suspend.
+-
++- ti,no-reset-on-init: When present, the module should not be reset at init
++- ti,no-idle-on-init: When present, the module should not be idled at init
+
+ Example:
+
+diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
+index f9c5da9..ec33ea0 100644
+--- a/arch/arm/boot/dts/am33xx.dtsi
++++ b/arch/arm/boot/dts/am33xx.dtsi
+@@ -607,6 +607,7 @@
+ reg = <0x44d00000 0x4000 /* M3 UMEM */
+ 0x44d80000 0x2000>; /* M3 DMEM */
+ ti,hwmods = "wkup_m3";
++ ti,no-reset-on-init;
+ };
+
+ elm: elm@48080000 {
+@@ -637,6 +638,7 @@
+ gpmc: gpmc@50000000 {
+ compatible = "ti,am3352-gpmc";
+ ti,hwmods = "gpmc";
++ ti,no-idle-on-init;
+ reg = <0x50000000 0x2000>;
+ interrupts = <100>;
+ gpmc,num-cs = <7>;
+diff --git a/arch/arm/boot/dts/omap4.dtsi b/arch/arm/boot/dts/omap4.dtsi
+index 22d9f2b..e8fe797 100644
+--- a/arch/arm/boot/dts/omap4.dtsi
++++ b/arch/arm/boot/dts/omap4.dtsi
+@@ -214,6 +214,7 @@
+ gpmc,num-cs = <8>;
+ gpmc,num-waitpins = <4>;
+ ti,hwmods = "gpmc";
++ ti,no-idle-on-init;
+ };
+
+ uart1: serial@4806a000 {
+@@ -492,6 +493,7 @@
+ reg = <0x4c000000 0x100>;
+ interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
+ ti,hwmods = "emif1";
++ ti,no-idle-on-init;
+ phy-type = <1>;
+ hw-caps-read-idle-ctrl;
+ hw-caps-ll-interface;
+@@ -503,6 +505,7 @@
+ reg = <0x4d000000 0x100>;
+ interrupts = <GIC_SPI 111 IRQ_TYPE_LEVEL_HIGH>;
+ ti,hwmods = "emif2";
++ ti,no-idle-on-init;
+ phy-type = <1>;
+ hw-caps-read-idle-ctrl;
+ hw-caps-ll-interface;
+diff --git a/arch/arm/boot/dts/omap5.dtsi b/arch/arm/boot/dts/omap5.dtsi
+index 7cdea1b..a9d49df 100644
+--- a/arch/arm/boot/dts/omap5.dtsi
++++ b/arch/arm/boot/dts/omap5.dtsi
+@@ -607,6 +607,7 @@
+ emif1: emif@0x4c000000 {
+ compatible = "ti,emif-4d5";
+ ti,hwmods = "emif1";
++ ti,no-idle-on-init;
+ phy-type = <2>; /* DDR PHY type: Intelli PHY */
+ reg = <0x4c000000 0x400>;
+ interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
+@@ -618,6 +619,7 @@
+ emif2: emif@0x4d000000 {
+ compatible = "ti,emif-4d5";
+ ti,hwmods = "emif2";
++ ti,no-idle-on-init;
+ phy-type = <2>; /* DDR PHY type: Intelli PHY */
+ reg = <0x4d000000 0x400>;
+ interrupts = <GIC_SPI 111 IRQ_TYPE_LEVEL_HIGH>;