xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ARM: dts: Fix omap serial wake-up when booted with device tree

Browse Source 
We've had deeper idle states working on omaps for few years now,
but only in the legacy mode. When booted with device tree, the
wake-up events did not have a chance to work until commit
3e6cee1786 (pinctrl: single: Add support for wake-up interrupts)
that recently got merged. In addition to that we also needed commit
79d9701559 (of/irq: create interrupts-extended property) and
9ec36cafe4 (of/irq: do irq resolution in platform_get_irq) that
are now also merged.

So let's fix the wake-up events for some selected omaps so devices
booted in device tree mode won't just hang if deeper power states
are enabled, and so systems can wake up from suspend to the serial
port event.

Note that there's no longer need to specify the wake-up bit in
the pinctrl settings, the request_irq on the wake-up pin takes
care of that.

Cc: devicetree@vger.kernel.org
Cc: "Benoît Cousson" <bcousson@baylibre.com>
Cc: Kevin Hilman <khilman@linaro.org>
Cc: Nishanth Menon <nm@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Tero Kristo <t-kristo@ti.com>
[tony@atomide.com: updated comments, added board LDP]
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Tony Lindgren
2014-05-05 17:27:39 -07:00
parent 08eb9a8c8a
commit 31f0820a67
8 changed files with 54 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
arch/arm/boot/dts/omap4.dtsi
View File

@@ -311,7 +311,7 @@
uart2: serial@4806c000 {
compatible = "ti,omap4-uart";
reg = <0x4806c000 0x100>;
interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
interrupts-extended = <&gic GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
ti,hwmods = "uart2";
clock-frequency = <48000000>;
};
@@ -319,7 +319,7 @@
uart3: serial@48020000 {
compatible = "ti,omap4-uart";
reg = <0x48020000 0x100>;
interrupts = <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
interrupts-extended = <&gic GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
ti,hwmods = "uart3";
clock-frequency = <48000000>;
};
@@ -327,7 +327,7 @@
uart4: serial@4806e000 {
compatible = "ti,omap4-uart";
reg = <0x4806e000 0x100>;
interrupts = <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>;
interrupts-extended = <&gic GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>;
ti,hwmods = "uart4";
clock-frequency = <48000000>;
};