On 17:42-20150107, Marc Zyngier wrote:
> OMAP4/5 has been (ab)using the gic_arch_extn to provide
> wakeup from suspend, and it makes a lot of sense to convert
> this code to use stacked domains instead.
>
> This patch does just this, updating the DT files to actually
> reflect what the HW provides.
>
> BIG FAT WARNING: because the DTs were so far lying by not
> exposing the WUGEN HW block, kernels with this patch applied
> won't have any suspend-resume facility when booted with old DTs,
> and old kernels with updated DTs won't even boot.
>
> On a platform with this patch applied, the system looks like
> this:
>
> root@bacon-fat:~# cat /proc/interrupts
> CPU0 CPU1
> 16: 0 0 WUGEN 37 gp_timer
> 19: 233799 155916 GIC 27 arch_timer
> 23: 0 0 WUGEN 9 l3-dbg-irq
> 24: 1 0 WUGEN 10 l3-app-irq
> 27: 282 0 WUGEN 13 omap-dma-engine
> 44: 0 0 4ae10000.gpio 13 DMA
> 294: 0 0 WUGEN 20 gpmc
> 297: 506 0 WUGEN 56 48070000.i2c
> 298: 0 0 WUGEN 57 48072000.i2c
> 299: 0 0 WUGEN 61 48060000.i2c
> 300: 0 0 WUGEN 62 4807a000.i2c
> 301: 8 0 WUGEN 60 4807c000.i2c
> 308: 2439 0 WUGEN 74 OMAP UART2
> 312: 362 0 WUGEN 83 mmc2
> 313: 502 0 WUGEN 86 mmc0
> 314: 13 0 WUGEN 94 mmc1
> 350: 0 0 PRCM pinctrl, pinctrl
> 406: 35155709 0 GIC 109 ehci_hcd:usb1
> 407: 0 0 WUGEN 7 palmas
> 409: 0 0 WUGEN 119 twl6040
> 410: 0 0 twl6040 5 twl6040_irq_ready
> 411: 0 0 twl6040 0 twl6040_irq_th
> IPI0: 0 1 CPU wakeup interrupts
> IPI1: 0 0 Timer broadcast interrupts
> IPI2: 95334 902334 Rescheduling interrupts
> IPI3: 0 0 Function call interrupts
> IPI4: 479 648 Single function call interrupts
> IPI5: 0 0 CPU stop interrupts
> IPI6: 0 0 IRQ work interrupts
> IPI7: 0 0 completion interrupts
> Err: 0
>
> Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
> ---
> arch/arm/boot/dts/am4372.dtsi | 11 ++-
> arch/arm/boot/dts/dra7.dtsi | 12 ++-
> arch/arm/boot/dts/dra72x.dtsi | 2 +-
> arch/arm/boot/dts/dra74x.dtsi | 2 +-
> arch/arm/boot/dts/omap4-duovero.dtsi | 2 -
> arch/arm/boot/dts/omap4-panda-common.dtsi | 8 +-
> arch/arm/boot/dts/omap4-sdp.dts | 8 +-
> arch/arm/boot/dts/omap4-var-som-om44.dtsi | 2 -
> arch/arm/boot/dts/omap4.dtsi | 18 ++++-
> arch/arm/boot/dts/omap5-cm-t54.dts | 1 -
> arch/arm/boot/dts/omap5-uevm.dts | 2 -
> arch/arm/boot/dts/omap5.dtsi | 24 ++++--
> arch/arm/mach-omap2/omap-wakeupgen.c | 125 +++++++++++++++++++++++-------
> arch/arm/mach-omap2/omap-wakeupgen.h | 1 -
> arch/arm/mach-omap2/omap4-common.c | 1 -
> 15 files changed, 154 insertions(+), 65 deletions(-)
we may need the following changes as well:
diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
index 7eaae4cf9f89..69f2313a49d1 100644
--- a/arch/arm/boot/dts/am437x-gp-evm.dts
+++ b/arch/arm/boot/dts/am437x-gp-evm.dts
@@ -280,7 +280,6 @@
reg = <0x24>;
compatible = "ti,tps65218";
interrupts = <GIC_SPI 7 IRQ_TYPE_NONE>; /* NMIn */
- interrupt-parent = <&gic>;
interrupt-controller;
#interrupt-cells = <2>;
diff --git a/arch/arm/boot/dts/am437x-sk-evm.dts b/arch/arm/boot/dts/am437x-sk-evm.dts
index 53bbfc90b26a..029badefad3d 100644
--- a/arch/arm/boot/dts/am437x-sk-evm.dts
+++ b/arch/arm/boot/dts/am437x-sk-evm.dts
@@ -334,7 +334,6 @@
tps@24 {
compatible = "ti,tps65218";
reg = <0x24>;
- interrupt-parent = <&gic>;
interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
interrupt-controller;
#interrupt-cells = <2>;
diff --git a/arch/arm/boot/dts/am43x-epos-evm.dts b/arch/arm/boot/dts/am43x-epos-evm.dts
index 662261d6b2ca..2d26bc11bad6 100644
--- a/arch/arm/boot/dts/am43x-epos-evm.dts
+++ b/arch/arm/boot/dts/am43x-epos-evm.dts
@@ -333,7 +333,6 @@
reg = <0x24>;
compatible = "ti,tps65218";
interrupts = <GIC_SPI 7 IRQ_TYPE_NONE>; /* NMIn */
- interrupt-parent = <&gic>;
interrupt-controller;
#interrupt-cells = <2>;
diff --git a/arch/arm/boot/dts/am57xx-beagle-x15.dts b/arch/arm/boot/dts/am57xx-beagle-x15.dts
index 49edbda68cd5..c2241c2e5d9d 100644
--- a/arch/arm/boot/dts/am57xx-beagle-x15.dts
+++ b/arch/arm/boot/dts/am57xx-beagle-x15.dts
@@ -335,7 +335,6 @@
mcp_rtc: rtc@6f {
compatible = "microchip,mcp7941x";
reg = <0x6f>;
- interrupt-parent = <&gic>;
interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_LOW>; /* IRQ_SYS_1N */
pinctrl-names = "default";
@@ -358,7 +357,7 @@
&uart3 {
status = "okay";
- interrupts-extended = <&gic GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>,
+ interrupts-extended = <&crossbar_mpu GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>,
<&dra7_pmx_core 0x248>;
pinctrl-names = "default";
diff --git a/arch/arm/boot/dts/omap5.dtsi b/arch/arm/boot/dts/omap5.dtsi
index f9c75c782c48..b056156e2a7a 100644
--- a/arch/arm/boot/dts/omap5.dtsi
+++ b/arch/arm/boot/dts/omap5.dtsi
@@ -893,14 +893,12 @@
usbhsohci: ohci@4a064800 {
compatible = "ti,ohci-omap3";
reg = <0x4a064800 0x400>;
- interrupt-parent = <&gic>;
interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
};
usbhsehci: ehci@4a064c00 {
compatible = "ti,ehci-omap";
reg = <0x4a064c00 0x400>;
- interrupt-parent = <&gic>;
interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>;
};
};
Also saw the following checkpatch warnings at this point - but, I
suppose they were pre-existing.
@@ -0,0 +1,26 @@
+WARNING: DT compatible string "ti,omap4-wugen-mpu" appears un-documented -- check ./Documentation/devicetree/bindings/
+#95: FILE: arch/arm/boot/dts/am4372.dtsi:55:
++ compatible = "ti,omap4-wugen-mpu";
+WARNING: DT compatible string "ti,omap5-wugen-mpu" appears un-documented -- check ./Documentation/devicetree/bindings/
+#112: FILE: arch/arm/boot/dts/dra7.dtsi:68:
++ compatible = "ti,omap5-wugen-mpu", "ti,omap4-wugen-mpu";
+WARNING: DT compatible string "ti,omap4-wugen-mpu" appears un-documented -- check ./Documentation/devicetree/bindings/
+#112: FILE: arch/arm/boot/dts/dra7.dtsi:68:
++ compatible = "ti,omap5-wugen-mpu", "ti,omap4-wugen-mpu";
+WARNING: line over 80 characters
+#127: FILE: arch/arm/boot/dts/dra7.dtsi:103:
++ <&wakeupgen GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
+WARNING: DT compatible string "ti,omap4-wugen-mpu" appears un-documented -- check ./Documentation/devicetree/bindings/
+#320: FILE: arch/arm/boot/dts/omap4.dtsi:78:
++ compatible = "ti,omap4-wugen-mpu";
+WARNING: DT compatible string "ti,omap5-wugen-mpu" appears un-documented -- check ./Documentation/devicetree/bindings/
+#416: FILE: arch/arm/boot/dts/omap5.dtsi:103:
++ compatible = "ti,omap5-wugen-mpu", "ti,omap4-wugen-mpu";
+WARNING: DT compatible string "ti,omap4-wugen-mpu" appears un-documented -- check ./Documentation/devicetree/bindings/
+#416: FILE: arch/arm/boot/dts/omap5.dtsi:103:
++ compatible = "ti,omap5-wugen-mpu", "ti,omap4-wugen-mpu";
+WARNING: line over 80 characters
+#600: FILE: arch/arm/mach-omap2/omap-wakeupgen.c:441:
++ return irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, &parent_args);
--
Regards,
Nishanth Menon
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